It causes no problem at all, since the categories/buckets are large enough. Only the malloc() function causes the problem. I read that it is not 'interrupt safe'. What does that mean and what should be done against it? On Wed, Feb 19, 2014 at 8:08 AM, <[email protected]> wrote:
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Today's Topics:
1. Re: dynamic 2D array creation error (Kenneth Raffenetti) 2. Re: urgent-malloc problem (Gilles Gouaillardet) 3. Re: Communication Error when installing MPICH on multi HOSTS. (Balaji, Pavan)
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Message: 1 Date: Tue, 18 Feb 2014 07:48:39 -0600 From: Kenneth Raffenetti <[email protected]> To: <[email protected]> Subject: Re: [mpich-discuss] dynamic 2D array creation error Message-ID: <[email protected]> Content-Type: text/plain; charset="UTF-8"; format=flowed
This list is for asking questions about the usage of mpich. General programming questions like the below are better suited for a forum like Stackoverflow.
On 02/18/2014 12:44 AM, Soheil Hooshdaran wrote:
Hello. What's wrong with this code snippet?
|1 2 3 4 5 6 |
| int **lBucket;
lBucket =new int*[iWorldSize];//iWorldSize is the nummber of processors
for(i=0;i<iWorldSize;++i) lBucket[i] =new int[m];|
Thanks in advance
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Message: 2 Date: Wed, 19 Feb 2014 12:07:43 +0900 From: Gilles Gouaillardet <[email protected]> To: [email protected] Subject: Re: [mpich-discuss] urgent-malloc problem Message-ID: <[email protected]> Content-Type: text/plain; charset=ISO-8859-1
Hello,
how do you run your program ? e.g. ./a.out <m> <base> <r> which values for m, base and r ?
there is no check on boundaries, and depending on the input parameters,
cat[count][ cursor[count]++ ]
indexes can be out of bound
imho, this is not mpich related at all
Best regards,
Gilles
On 2014/02/13 0:22, Soheil Hooshdaran wrote:
Hello. I have a memory allocation problem (using malloc). I can't figure out its cause. Could you help me please?
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Message: 3 Date: Wed, 19 Feb 2014 04:38:38 +0000 From: "Balaji, Pavan" <[email protected]> To: "[email protected]" <[email protected]> Subject: Re: [mpich-discuss] Communication Error when installing MPICH on multi HOSTS. Message-ID: <CF29912C.5996E%[email protected]> Content-Type: text/plain; charset="utf-8"
It?s hard to tell, but this does indicate some problem with your communication setup. Did you verify your /etc/hosts like described on the FAQ page?
? Pavan
From: ???? <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected] <mailto:[email protected]>> Date: Tuesday, February 18, 2014 at 5:21 AM To: discuss <[email protected]<mailto:[email protected]>> Subject: [mpich-discuss] Communication Error when installing MPICH on multi HOSTS.
HI.
My environment: Two Vmware VMs with ubuntu-server12.04 OS, called mpimaster,mpislaver1 they both linked to a virtual network 10.0.0.1; they can ssh to each other without password; I have disabled the fire walls with "sudo ufw disable" I install mpich3.0.4 on a NFS servered by mpimaster.
I installed mpich3.0.4 follow the "readme.txt", it has Communication problem when progresses from different host comunicate with each other. [cid:[email protected]]
From picture above we can see it's ok to run "cpi" on both hosts separately.
If you can't see the picture,plz see the shell's below.
ailab@mpimaster:~/Downloads/mpich-3.0.4$ mpiexec -n 4 ./examples/cpi Process 0 of 4 is on mpimaster Process 1 of 4 is on mpimaster Process 2 of 4 is on mpimaster Process 3 of 4 is on mpimaster pi is approximately 3.1415926544231239, Error is 0.0000000008333307 wall clock time = 0.028108 ailab@mpimaster:~/Downloads/mpich-3.0.4$ mpiexec -hosts mpimaster -n 4 ./examples/cpi Process 2 of 4 is on mpimaster Process 0 of 4 is on mpimaster Process 1 of 4 is on mpimaster Process 3 of 4 is on mpimaster pi is approximately 3.1415926544231239, Error is 0.0000000008333307 wall clock time = 0.027234 ailab@mpimaster:~/Downloads/mpich-3.0.4$ mpiexec -hosts mpislaver1 -n 4 ./examples/cpi Process 0 of 4 is on mpislaver1 pi is approximately 3.1415926544231239, Error is 0.0000000008333307 wall clock time = 0.000093 Process 1 of 4 is on mpislaver1 Process 2 of 4 is on mpislaver1 Process 3 of 4 is on mpislaver1 ailab@mpimaster:~/Downloads/mpich-3.0.4$ mpiexec -hosts mpimaster,mpislaver1 -n 4 ./examples/cpi Process 0 of 4 is on mpimaster Process 2 of 4 is on mpimaster Fatal error in PMPI_Reduce: A process has failed, error stack: PMPI_Reduce(1217)...............: MPI_Reduce(sbuf=0x7fff73a51ce8, rbuf=0x7fff73a51cf0, count=1, MPI_DOUBLE, MPI_SUM, root=0, MPI_COMM_WORLD) failed MPIR_Reduce_impl(1029)..........: MPIR_Reduce_intra(779)..........: MPIR_Reduce_impl(1029)..........: MPIR_Reduce_intra(835)..........: MPIR_Reduce_binomial(144).......: MPIDI_CH3U_Recvq_FDU_or_AEP(667): Communication error with rank 1 MPIR_Reduce_intra(799)..........: MPIR_Reduce_impl(1029)..........: MPIR_Reduce_intra(835)..........: MPIR_Reduce_binomial(206).......: Failure during collective
================================================================================ = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = EXIT CODE: 1 = CLEANING UP REMAINING PROCESSES = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES
================================================================================ [proxy:0:1@mpislaver1] HYD_pmcd_pmip_control_cmd_cb (./pm/pmiserv/pmip_cb.c:886) [proxy:0:1@mpislaver1] HYDT_dmxu_poll_wait_for_event (./tools/demux/demux_poll.c [proxy:0:1@mpislaver1] main (./pm/pmiserv/pmip.c:206): demux engine error waitin [mpiexec@mpimaster] HYDT_bscu_wait_for_completion (./tools/bootstrap/utils/bscu_ [mpiexec@mpimaster] HYDT_bsci_wait_for_completion (./tools/bootstrap/src/bsci_wa [mpiexec@mpimaster] HYD_pmci_wait_for_completion (./pm/pmiserv/pmiserv_pmci.c:21 [mpiexec@mpimaster] main (./ui/mpich/mpiexec.c:331): process manager error waiti ailab@mpimaster:~/Downloads/mpich-3.0.4$
plz help,THX!
------------------ Jie-Jun Wu Department of Computer Science, Sun Yat-sen University, Guangzhou, P.R. China