April 2020 - discuss - mailman3.cels.anl.gov

Re: [mpich-discuss] MPICH configure
by Zhou, Hui 24 Apr '20

24 Apr '20

Hi Bruce, Before give you solution (which I have no clue yet), let’s understand what is needed. Do you have a firewall rules between nodes? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Friday, April 24, 2020 at 2:54 PM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hui, mpirun is pointing to mpiexec.hydra. I’m using “mpirun -n 6 executable.x” to launch jobs. The system guys have given me some information about linking to the pmi libraries that I’m going to try to see if I can get srun to work properly. I will give that a try and see if it enables me to use srun. They also suggested trying to configure MPICH with --add-pmi, although that doesn’t look like an MPICH configuration option. I did see a –enable-pmiport option. Is that something I should try? Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Friday, April 24, 2020 at 10:59 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Mpirun, mpiexec, and mpiexec.hydra, are all the same binary, with previous two symbolic links to the last. Please verify. If not, then you have installation issue. Hydra will detect environment and utilize information gathered from, e.g. slurm. For example, it will gather that you are launching with a given number of processes. When in doubt, use explicit command line option, such as `-n <numprocs>`. By the way, what is your complete command line that you used to launch jobs in all the cases? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Friday, April 24, 2020 at 11:49 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I’m not sure what is going on with srun, but it doesn’t seem to work the way you are describing, at least on our system. I’ve got an inquiry into our system administrators asking about it but generally, when I launch with srun it looks like MPI_Comm_size is returns 1 for the size of MPI_COMM_WORLD no matter how many processors I’m actually running on. I’ve tried the following combinations: mpich-3.3.2 built without slurm Launch with mpiexec.hydra: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init Launch with mpiexec: hangs in MPI_Init mpich-3.3.2 built with slurm Launch with mpiexec: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init mpich-3.3.1 built with slurm Launch with mpiexec: runs okay Launch with srun: only get 1 processor Launch with mpirun: runs okay I was under the impression that MPICH created its own version of mpirun/mpiexec depending on what it found out about the scheduling system during configuration and then built mpirun or mpiexec accordingly. Is this not correct? Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Thursday, April 23, 2020 at 1:31 PM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, I noticed you are mixing up things a bit, so let’s clear it up first: * If you compile with slurm then you should only launch with srun, not mpirun. Otherwise it won’t work. * If you compile without slurm, then you should launch with mpirun, or more precisely, mpiexec.hydra. Depend on which you are doing, each may have issues in your envioronment, but whatever issues are probably unrelated, and should not be discussed in a same context. What is working with your with 3.3.1? With slurm? If that’s what’s working for you, then let’s focus on compile and run 3.3.2 with slurm as well. -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Thursday, April 23, 2020 at 11:08 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I was launching the jobs with mpirun. I tried launching the jobs with srun and they no longer hang, but it looks like they are returning an MPI_COMM_WORLD with only one process, although I didn’t investigate this extensively. I also tried Pavan’s suggestion and rebuilt 3.3.2 without slurm and ran it with mpiexec. This also hangs and the error I was seeing previously reappears [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node168.local" to "node100.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node100.local at port 54762 (check for firewalls!) srun: error: node168: task 1: Exited with exit code 5 srun: Job step aborted: Waiting up to 2 seconds for job step to finish. slurmstepd: *** STEP 13201325.0 CANCELLED AT 2020-04-23T08:58:02 *** on node100 slurmstepd: *** JOB 13201325 CANCELLED AT 2020-04-23T08:58:02 *** on node100 [mpiexec(a)node100.local] HYDU_sock_write (utils/sock/sock.c:256): write error (Bad file descriptor) [mpiexec(a)node100.local] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:178): unable to write data to proxy [mpiexec(a)node100.local] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:77): unable to send signal downstream [mpiexec(a)node100.local] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:77): callback returned error status [mpiexec(a)node100.local] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:196): error waiting for event [mpiexec(a)node100.local] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion I suppose this could be a firewall issue, but there must also be some changes between 3.3.1 and 3.3.2, otherwise it should be a problem for all versions of mpich. Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 10:22 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

1 0

Re: [mpich-discuss] MPICH configure
by Palmer, Bruce J 24 Apr '20

24 Apr '20

Hui, mpirun is pointing to mpiexec.hydra. I’m using “mpirun -n 6 executable.x” to launch jobs. The system guys have given me some information about linking to the pmi libraries that I’m going to try to see if I can get srun to work properly. I will give that a try and see if it enables me to use srun. They also suggested trying to configure MPICH with --add-pmi, although that doesn’t look like an MPICH configuration option. I did see a –enable-pmiport option. Is that something I should try? Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Friday, April 24, 2020 at 10:59 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Mpirun, mpiexec, and mpiexec.hydra, are all the same binary, with previous two symbolic links to the last. Please verify. If not, then you have installation issue. Hydra will detect environment and utilize information gathered from, e.g. slurm. For example, it will gather that you are launching with a given number of processes. When in doubt, use explicit command line option, such as `-n <numprocs>`. By the way, what is your complete command line that you used to launch jobs in all the cases? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Friday, April 24, 2020 at 11:49 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I’m not sure what is going on with srun, but it doesn’t seem to work the way you are describing, at least on our system. I’ve got an inquiry into our system administrators asking about it but generally, when I launch with srun it looks like MPI_Comm_size is returns 1 for the size of MPI_COMM_WORLD no matter how many processors I’m actually running on. I’ve tried the following combinations: mpich-3.3.2 built without slurm Launch with mpiexec.hydra: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init Launch with mpiexec: hangs in MPI_Init mpich-3.3.2 built with slurm Launch with mpiexec: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init mpich-3.3.1 built with slurm Launch with mpiexec: runs okay Launch with srun: only get 1 processor Launch with mpirun: runs okay I was under the impression that MPICH created its own version of mpirun/mpiexec depending on what it found out about the scheduling system during configuration and then built mpirun or mpiexec accordingly. Is this not correct? Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Thursday, April 23, 2020 at 1:31 PM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, I noticed you are mixing up things a bit, so let’s clear it up first: * If you compile with slurm then you should only launch with srun, not mpirun. Otherwise it won’t work. * If you compile without slurm, then you should launch with mpirun, or more precisely, mpiexec.hydra. Depend on which you are doing, each may have issues in your envioronment, but whatever issues are probably unrelated, and should not be discussed in a same context. What is working with your with 3.3.1? With slurm? If that’s what’s working for you, then let’s focus on compile and run 3.3.2 with slurm as well. -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Thursday, April 23, 2020 at 11:08 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I was launching the jobs with mpirun. I tried launching the jobs with srun and they no longer hang, but it looks like they are returning an MPI_COMM_WORLD with only one process, although I didn’t investigate this extensively. I also tried Pavan’s suggestion and rebuilt 3.3.2 without slurm and ran it with mpiexec. This also hangs and the error I was seeing previously reappears [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node168.local" to "node100.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node100.local at port 54762 (check for firewalls!) srun: error: node168: task 1: Exited with exit code 5 srun: Job step aborted: Waiting up to 2 seconds for job step to finish. slurmstepd: *** STEP 13201325.0 CANCELLED AT 2020-04-23T08:58:02 *** on node100 slurmstepd: *** JOB 13201325 CANCELLED AT 2020-04-23T08:58:02 *** on node100 [mpiexec(a)node100.local] HYDU_sock_write (utils/sock/sock.c:256): write error (Bad file descriptor) [mpiexec(a)node100.local] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:178): unable to write data to proxy [mpiexec(a)node100.local] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:77): unable to send signal downstream [mpiexec(a)node100.local] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:77): callback returned error status [mpiexec(a)node100.local] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:196): error waiting for event [mpiexec(a)node100.local] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion I suppose this could be a firewall issue, but there must also be some changes between 3.3.1 and 3.3.2, otherwise it should be a problem for all versions of mpich. Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 10:22 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

1 0

Re: [mpich-discuss] MPICH configure
by Zhou, Hui 24 Apr '20

24 Apr '20

Hi Bruce, Mpirun, mpiexec, and mpiexec.hydra, are all the same binary, with previous two symbolic links to the last. Please verify. If not, then you have installation issue. Hydra will detect environment and utilize information gathered from, e.g. slurm. For example, it will gather that you are launching with a given number of processes. When in doubt, use explicit command line option, such as `-n <numprocs>`. By the way, what is your complete command line that you used to launch jobs in all the cases? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Friday, April 24, 2020 at 11:49 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I’m not sure what is going on with srun, but it doesn’t seem to work the way you are describing, at least on our system. I’ve got an inquiry into our system administrators asking about it but generally, when I launch with srun it looks like MPI_Comm_size is returns 1 for the size of MPI_COMM_WORLD no matter how many processors I’m actually running on. I’ve tried the following combinations: mpich-3.3.2 built without slurm Launch with mpiexec.hydra: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init Launch with mpiexec: hangs in MPI_Init mpich-3.3.2 built with slurm Launch with mpiexec: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init mpich-3.3.1 built with slurm Launch with mpiexec: runs okay Launch with srun: only get 1 processor Launch with mpirun: runs okay I was under the impression that MPICH created its own version of mpirun/mpiexec depending on what it found out about the scheduling system during configuration and then built mpirun or mpiexec accordingly. Is this not correct? Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Thursday, April 23, 2020 at 1:31 PM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, I noticed you are mixing up things a bit, so let’s clear it up first: * If you compile with slurm then you should only launch with srun, not mpirun. Otherwise it won’t work. * If you compile without slurm, then you should launch with mpirun, or more precisely, mpiexec.hydra. Depend on which you are doing, each may have issues in your envioronment, but whatever issues are probably unrelated, and should not be discussed in a same context. What is working with your with 3.3.1? With slurm? If that’s what’s working for you, then let’s focus on compile and run 3.3.2 with slurm as well. -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Thursday, April 23, 2020 at 11:08 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I was launching the jobs with mpirun. I tried launching the jobs with srun and they no longer hang, but it looks like they are returning an MPI_COMM_WORLD with only one process, although I didn’t investigate this extensively. I also tried Pavan’s suggestion and rebuilt 3.3.2 without slurm and ran it with mpiexec. This also hangs and the error I was seeing previously reappears [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node168.local" to "node100.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node100.local at port 54762 (check for firewalls!) srun: error: node168: task 1: Exited with exit code 5 srun: Job step aborted: Waiting up to 2 seconds for job step to finish. slurmstepd: *** STEP 13201325.0 CANCELLED AT 2020-04-23T08:58:02 *** on node100 slurmstepd: *** JOB 13201325 CANCELLED AT 2020-04-23T08:58:02 *** on node100 [mpiexec(a)node100.local] HYDU_sock_write (utils/sock/sock.c:256): write error (Bad file descriptor) [mpiexec(a)node100.local] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:178): unable to write data to proxy [mpiexec(a)node100.local] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:77): unable to send signal downstream [mpiexec(a)node100.local] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:77): callback returned error status [mpiexec(a)node100.local] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:196): error waiting for event [mpiexec(a)node100.local] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion I suppose this could be a firewall issue, but there must also be some changes between 3.3.1 and 3.3.2, otherwise it should be a problem for all versions of mpich. Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 10:22 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

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Re: [mpich-discuss] MPICH configure
by Congiu, Giuseppe 24 Apr '20

24 Apr '20

Hi Bruce, I am not sure why you are getting only one process with srun. There is a bug in all those versions of mpich you have listed when running with slurm, but that concerns the misdetection of nodes when they use some naming scheme that is not recognized. If this can be of any help, that bug was fixed in the following PR and was included in version 3.4a2 https://github.com/pmodels/mpich/pull/3947 Best, Giuseppe From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Friday, April 24, 2020 at 11:49 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I’m not sure what is going on with srun, but it doesn’t seem to work the way you are describing, at least on our system. I’ve got an inquiry into our system administrators asking about it but generally, when I launch with srun it looks like MPI_Comm_size is returns 1 for the size of MPI_COMM_WORLD no matter how many processors I’m actually running on. I’ve tried the following combinations: mpich-3.3.2 built without slurm Launch with mpiexec.hydra: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init Launch with mpiexec: hangs in MPI_Init mpich-3.3.2 built with slurm Launch with mpiexec: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init mpich-3.3.1 built with slurm Launch with mpiexec: runs okay Launch with srun: only get 1 processor Launch with mpirun: runs okay I was under the impression that MPICH created its own version of mpirun/mpiexec depending on what it found out about the scheduling system during configuration and then built mpirun or mpiexec accordingly. Is this not correct? Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Thursday, April 23, 2020 at 1:31 PM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, I noticed you are mixing up things a bit, so let’s clear it up first: * If you compile with slurm then you should only launch with srun, not mpirun. Otherwise it won’t work. * If you compile without slurm, then you should launch with mpirun, or more precisely, mpiexec.hydra. Depend on which you are doing, each may have issues in your envioronment, but whatever issues are probably unrelated, and should not be discussed in a same context. What is working with your with 3.3.1? With slurm? If that’s what’s working for you, then let’s focus on compile and run 3.3.2 with slurm as well. -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Thursday, April 23, 2020 at 11:08 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I was launching the jobs with mpirun. I tried launching the jobs with srun and they no longer hang, but it looks like they are returning an MPI_COMM_WORLD with only one process, although I didn’t investigate this extensively. I also tried Pavan’s suggestion and rebuilt 3.3.2 without slurm and ran it with mpiexec. This also hangs and the error I was seeing previously reappears [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node168.local" to "node100.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node100.local at port 54762 (check for firewalls!) srun: error: node168: task 1: Exited with exit code 5 srun: Job step aborted: Waiting up to 2 seconds for job step to finish. slurmstepd: *** STEP 13201325.0 CANCELLED AT 2020-04-23T08:58:02 *** on node100 slurmstepd: *** JOB 13201325 CANCELLED AT 2020-04-23T08:58:02 *** on node100 [mpiexec(a)node100.local] HYDU_sock_write (utils/sock/sock.c:256): write error (Bad file descriptor) [mpiexec(a)node100.local] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:178): unable to write data to proxy [mpiexec(a)node100.local] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:77): unable to send signal downstream [mpiexec(a)node100.local] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:77): callback returned error status [mpiexec(a)node100.local] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:196): error waiting for event [mpiexec(a)node100.local] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion I suppose this could be a firewall issue, but there must also be some changes between 3.3.1 and 3.3.2, otherwise it should be a problem for all versions of mpich. Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 10:22 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

1 0

Re: [mpich-discuss] MPICH configure
by Palmer, Bruce J 24 Apr '20

24 Apr '20

Hi Hui, I’m not sure what is going on with srun, but it doesn’t seem to work the way you are describing, at least on our system. I’ve got an inquiry into our system administrators asking about it but generally, when I launch with srun it looks like MPI_Comm_size is returns 1 for the size of MPI_COMM_WORLD no matter how many processors I’m actually running on. I’ve tried the following combinations: mpich-3.3.2 built without slurm Launch with mpiexec.hydra: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init Launch with mpiexec: hangs in MPI_Init mpich-3.3.2 built with slurm Launch with mpiexec: hangs in MPI_Init Launch with srun: only get 1 processor Launch with mpirun: hangs in MPI_Init mpich-3.3.1 built with slurm Launch with mpiexec: runs okay Launch with srun: only get 1 processor Launch with mpirun: runs okay I was under the impression that MPICH created its own version of mpirun/mpiexec depending on what it found out about the scheduling system during configuration and then built mpirun or mpiexec accordingly. Is this not correct? Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Thursday, April 23, 2020 at 1:31 PM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, I noticed you are mixing up things a bit, so let’s clear it up first: * If you compile with slurm then you should only launch with srun, not mpirun. Otherwise it won’t work. * If you compile without slurm, then you should launch with mpirun, or more precisely, mpiexec.hydra. Depend on which you are doing, each may have issues in your envioronment, but whatever issues are probably unrelated, and should not be discussed in a same context. What is working with your with 3.3.1? With slurm? If that’s what’s working for you, then let’s focus on compile and run 3.3.2 with slurm as well. -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Thursday, April 23, 2020 at 11:08 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I was launching the jobs with mpirun. I tried launching the jobs with srun and they no longer hang, but it looks like they are returning an MPI_COMM_WORLD with only one process, although I didn’t investigate this extensively. I also tried Pavan’s suggestion and rebuilt 3.3.2 without slurm and ran it with mpiexec. This also hangs and the error I was seeing previously reappears [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node168.local" to "node100.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node100.local at port 54762 (check for firewalls!) srun: error: node168: task 1: Exited with exit code 5 srun: Job step aborted: Waiting up to 2 seconds for job step to finish. slurmstepd: *** STEP 13201325.0 CANCELLED AT 2020-04-23T08:58:02 *** on node100 slurmstepd: *** JOB 13201325 CANCELLED AT 2020-04-23T08:58:02 *** on node100 [mpiexec(a)node100.local] HYDU_sock_write (utils/sock/sock.c:256): write error (Bad file descriptor) [mpiexec(a)node100.local] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:178): unable to write data to proxy [mpiexec(a)node100.local] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:77): unable to send signal downstream [mpiexec(a)node100.local] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:77): callback returned error status [mpiexec(a)node100.local] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:196): error waiting for event [mpiexec(a)node100.local] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion I suppose this could be a firewall issue, but there must also be some changes between 3.3.1 and 3.3.2, otherwise it should be a problem for all versions of mpich. Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 10:22 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

1 0

Re: [mpich-discuss] MPICH configure
by Zhou, Hui 23 Apr '20

23 Apr '20

Hi Bruce, I noticed you are mixing up things a bit, so let’s clear it up first: * If you compile with slurm then you should only launch with srun, not mpirun. Otherwise it won’t work. * If you compile without slurm, then you should launch with mpirun, or more precisely, mpiexec.hydra. Depend on which you are doing, each may have issues in your envioronment, but whatever issues are probably unrelated, and should not be discussed in a same context. What is working with your with 3.3.1? With slurm? If that’s what’s working for you, then let’s focus on compile and run 3.3.2 with slurm as well. -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Thursday, April 23, 2020 at 11:08 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I was launching the jobs with mpirun. I tried launching the jobs with srun and they no longer hang, but it looks like they are returning an MPI_COMM_WORLD with only one process, although I didn’t investigate this extensively. I also tried Pavan’s suggestion and rebuilt 3.3.2 without slurm and ran it with mpiexec. This also hangs and the error I was seeing previously reappears [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node168.local" to "node100.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node100.local at port 54762 (check for firewalls!) srun: error: node168: task 1: Exited with exit code 5 srun: Job step aborted: Waiting up to 2 seconds for job step to finish. slurmstepd: *** STEP 13201325.0 CANCELLED AT 2020-04-23T08:58:02 *** on node100 slurmstepd: *** JOB 13201325 CANCELLED AT 2020-04-23T08:58:02 *** on node100 [mpiexec(a)node100.local] HYDU_sock_write (utils/sock/sock.c:256): write error (Bad file descriptor) [mpiexec(a)node100.local] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:178): unable to write data to proxy [mpiexec(a)node100.local] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:77): unable to send signal downstream [mpiexec(a)node100.local] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:77): callback returned error status [mpiexec(a)node100.local] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:196): error waiting for event [mpiexec(a)node100.local] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion I suppose this could be a firewall issue, but there must also be some changes between 3.3.1 and 3.3.2, otherwise it should be a problem for all versions of mpich. Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 10:22 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

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Re: [mpich-discuss] MPICH configure
by Palmer, Bruce J 23 Apr '20

23 Apr '20

Hi Hui, I was launching the jobs with mpirun. I tried launching the jobs with srun and they no longer hang, but it looks like they are returning an MPI_COMM_WORLD with only one process, although I didn’t investigate this extensively. I also tried Pavan’s suggestion and rebuilt 3.3.2 without slurm and ran it with mpiexec. This also hangs and the error I was seeing previously reappears [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node168.local" to "node100.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node100.local at port 54762 (check for firewalls!) srun: error: node168: task 1: Exited with exit code 5 srun: Job step aborted: Waiting up to 2 seconds for job step to finish. slurmstepd: *** STEP 13201325.0 CANCELLED AT 2020-04-23T08:58:02 *** on node100 slurmstepd: *** JOB 13201325 CANCELLED AT 2020-04-23T08:58:02 *** on node100 [mpiexec(a)node100.local] HYDU_sock_write (utils/sock/sock.c:256): write error (Bad file descriptor) [mpiexec(a)node100.local] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:178): unable to write data to proxy [mpiexec(a)node100.local] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:77): unable to send signal downstream [mpiexec(a)node100.local] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:77): callback returned error status [mpiexec(a)node100.local] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:196): error waiting for event [mpiexec(a)node100.local] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion I suppose this could be a firewall issue, but there must also be some changes between 3.3.1 and 3.3.2, otherwise it should be a problem for all versions of mpich. Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 10:22 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

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Re: [mpich-discuss] MPICH configure
by Zhou, Hui 22 Apr '20

22 Apr '20

Hi Bruce, How did you launch your jobs? Since you configured with slurm, you should launch your job with `srun`, right? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:55 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

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Re: [mpich-discuss] MPICH configure
by Balaji, Pavan 22 Apr '20

22 Apr '20

Bruce, all, The `--with-slurm` option is to pick SLURM libraries, so you can use SLURM's PMI library with srun. If you don't use that, MPICH will use its internal PMI library to run with Hydra. Can you try that? Basically remove `--with-slurm` and try running the program with "mpiexec". The below message seems like there's a firewall issue between the nodes. Did you check on that? -- Pavan > On Apr 16, 2020, at 5:47 PM, Palmer, Bruce J via discuss <discuss(a)mpich.org> wrote: > > Hi, > > I’ve been building MPICH on are aging Infiniband cluster using the following formula > > ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ > > It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message > > [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l > ocal" to "node012.local" (Connection refused) > [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p > ort 37769 (check for firewalls!) > srun: error: node013: task 1: Exited with exit code 5 > > If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? > > Bruce Palmer > Senior Research Scientist > Pacific Northwest National Laboratory > Richland, WA 99352 > (509) 375-3899 > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss

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Re: [mpich-discuss] MPICH configure
by Palmer, Bruce J 22 Apr '20

22 Apr '20

Hi Hui, Its currently 14.03.8 Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Wednesday, April 22, 2020 at 9:36 AM To: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Bruce, Thanks for the effort checking these versions. What is the slurm versions that you have on cluster? -- Hui Zhou From: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Date: Wednesday, April 22, 2020 at 11:02 AM To: "Zhou, Hui" <zhouh(a)anl.gov>, "discuss(a)mpich.org" <discuss(a)mpich.org> Subject: Re: [mpich-discuss] MPICH configure Hi Hui, I rebuilt everything from scratch and tried running several versions of mpich. Release 3.3.1 seems to work okay but 3.3.2 hangs. Here is a complete summary of the versions I ran 3.3rc1: Works 3.3: Works 3.3.1: Works 3.3.2: Hangs 3.4a2: Hangs I’m not seeing the error message from hydra anymore (I have no idea why not), but I logged into one of the hung processes when running with 3.3.2 and got the following listing from gdb (gdb) where #0 0x0000003d7ce0e810 in __read_nocancel () from /lib64/libpthread.so.0 #1 0x00002aaaac6e936e in PMIU_readline () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #2 0x00002aaaac6e985b in GetResponse.part.0 () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #3 0x00002aaaac6e4e36 in MPIDU_shm_seg_commit () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #4 0x00002aaaabc541dc in MPIR_Init_thread () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #5 0x00002aaaabc3db7e in PMPI_Init () from /people/d3g293/mpich/mpich-3.3.2/install/lib/libmpi.so.12 #6 0x0000000000408d0e in main () Bruce From: "Zhou, Hui" <zhouh(a)anl.gov> Date: Monday, April 20, 2020 at 10:25 AM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: Re: [mpich-discuss] MPICH configure The error is from `hydra`, which should not have changed much between the versions. Could you verify that 3.3.1 still works for you? -- Hui Zhou From: "Palmer, Bruce J via discuss" <discuss(a)mpich.org> Reply-To: "discuss(a)mpich.org" <discuss(a)mpich.org> Date: Thursday, April 16, 2020 at 5:48 PM To: "discuss(a)mpich.org" <discuss(a)mpich.org> Cc: "Palmer, Bruce J" <Bruce.Palmer(a)pnnl.gov> Subject: [mpich-discuss] MPICH configure Hi, I’ve been building MPICH on are aging Infiniband cluster using the following formula ./configure --prefix=/people/d3g293/mpich/mpich-3.3.2/install --with-device=ch4:ofi:sockets --with-libfabric=embedded --enable-threads=multiple --with-slurm CC=gcc CXX=g++ It’s been working pretty well but I recently tried to build mpich-3.3.2 and mpich-3.4a2 and although the build seems to work okay, I’m having problems actually running anything. If I run on 2 nodes the code seems to hang on MPI_Init and it looks like it is producing the error message [proxy:0:[email protected]] HYDU_sock_connect (utils/sock/sock.c:145): unable to connect from "node013.l ocal" to "node012.local" (Connection refused) [proxy:0:[email protected]] main (pm/pmiserv/pmip.c:183): unable to connect to server node012.local at p ort 37769 (check for firewalls!) srun: error: node013: task 1: Exited with exit code 5 If I run on a single node, things seem to work. Any idea what is going on here? I’ve got a working build of mpich-3.3, so things were okay up until recently. Has something in MPICH changed and my configuration formula is no good, or is this more likely to be due to some system modification? Bruce Palmer Senior Research Scientist Pacific Northwest National Laboratory Richland, WA 99352 (509) 375-3899

1 0