March 2016 - discuss - mailman3.cels.anl.gov

Re: [mpich-discuss] Problem in in executing MPI program in remote machine
by Halim Amer 04 Mar '16

04 Mar '16

It's a problem in your ssh settings not MPICH. Make sure communication between all your nodes is well setup before running an MPI program. Some more hints are given in our FAQ page https://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_My_MPI… --Halim www.mcs.anl.gov/~aamer On 3/3/16 10:40 PM, sanjesh pant wrote: > Hi Sir, > As per your suggesstion got from mail , I used it to execute > program but still there is a problem . > Now I am having permission problem. > Problem : Permission denied (publickey, gssapi-keyex, gssapi-with-mic). > > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss > _______________________________________________ discuss mailing list discuss(a)mpich.org To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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Problem in in executing MPI program in remote machine
by sanjesh pant 03 Mar '16

03 Mar '16

Hi Sir, As per your suggesstion got from mail , I used it to execute program but still there is a problem . Now I am having permission problem. Problem : Permission denied (publickey, gssapi-keyex, gssapi-with-mic). _______________________________________________ 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] How to uninstall mpich (edited)
by Seo, Sangmin 03 Mar '16

03 Mar '16

Hi Lau, ‘make uninstall’ will do it. Regards, Sangmin > On Mar 3, 2016, at 6:23 AM, pdm882 pdm882 <pdm882(a)alumni.ku.dk> wrote: > > I forgot to mention, that my OS is Linux Mint 17.1 > > Cheers > ________________________________________ > Fra: pdm882 pdm882 > Sendt: 3. marts 2016 12:50 > Til: discuss(a)mpich.org > Emne: How to uninstall mpich > > Hi > I have recently downloaded and installed mpich from your webpage (mpich.org) but would like to uninstall it, but don't know how. I have been googling for a while but cannot find a safe way to do it. Can you help me? > > Best > Lau > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list discuss(a)mpich.org To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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How to uninstall mpich (edited)
by pdm882 pdm882 03 Mar '16

03 Mar '16

I forgot to mention, that my OS is Linux Mint 17.1 Cheers ________________________________________ Fra: pdm882 pdm882 Sendt: 3. marts 2016 12:50 Til: discuss(a)mpich.org Emne: How to uninstall mpich Hi I have recently downloaded and installed mpich from your webpage (mpich.org) but would like to uninstall it, but don't know how. I have been googling for a while but cannot find a safe way to do it. Can you help me? Best Lau _______________________________________________ discuss mailing list discuss(a)mpich.org To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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How to uninstall mpich
by pdm882 pdm882 03 Mar '16

03 Mar '16

Hi I have recently downloaded and installed mpich from your webpage (mpich.org) but would like to uninstall it, but don't know how. I have been googling for a while but cannot find a safe way to do it. Can you help me? Best Lau _______________________________________________ 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] MPICH2 installation for windows
by Guo, Yanfei 02 Mar '16

02 Mar '16

Hi, The latest version is MPICH 3.2. The instruction on LAMMPS site (http://rpm.lammps.org/windows.html) is referring to an old version (MPICH2). You probably should follow the guide on the LAMMPS website. The latest version do not support Windows anymore. For more information, refer to https://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_Why_ca… Yanfei Guo On 3/2/16, 8:16 AM, "Ali Radhi" <ali.radhi(a)mail.utoronto.ca> wrote: >Hi > > >I have been trying to install MPICH2 for LAMMPS mpi for two days now. I am > in need of help please. First, they said be careful of choosing 32 bit or 64 bit in the download page, which I do not see anywhere. Also, when I attempt to run it with windows version, it says that mpich2mpi.dll is not found. Last bu not least, when I try > to use a linux interface on windows to do the configure option, it said no c compiler found. I have MinGW installed too. I am at my wits here. Please let me know if you can assist me. > > > >Regards > > >Ali Radhi >Advanced Research Lab for Multifunctional Lightweight Structures (ARL-MLS) >Department of Mechanical & Industrial Engineering >Faculty of Applied Science & Engineering | University of Toronto >Room: MB110, Lassonde Mining Building, >170 College Street, Toronto, ON, Canada. M5S 3E3 > > > _______________________________________________ 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] MPICH2 installation for windows
by Kenneth Raffenetti 02 Mar '16

02 Mar '16

We do not support MPICH on Windows any longer. We recommend you try MS-MPI, which is freely available: (https://msdn.microsoft.com/en-us/library/windows/desktop/bb524831(v=vs.85).…) Ken On 03/02/2016 08:16 AM, Ali Radhi wrote: > Hi > > > I have been trying to install MPICH2 for LAMMPS mpi for two days now. I > am in need of help please. First, they said be careful of choosing 32 > bit or 64 bit in the download page, which I do not see anywhere. Also, > when I attempt to run it with windows version, it says that > mpich2mpi.dll is not found. Last bu not least, when I try to use a linux > interface on windows to do the configure option, it said no c compiler > found. I have MinGW installed too. I am at my wits here. Please let me > know if you can assist me. > > > Regards > > > Ali Radhi > > Advanced Research Lab for Multifunctional Lightweight Structures (ARL-MLS) > > Department of Mechanical & Industrial Engineering > > Faculty of Applied Science & Engineering | University of Toronto > > Room: MB110, Lassonde Mining Building, > 170 College Street, Toronto, ON, Canada. M5S 3E3 > > > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss > _______________________________________________ discuss mailing list discuss(a)mpich.org To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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MPICH2 installation for windows
by Ali Radhi 02 Mar '16

02 Mar '16

Hi I have been trying to install MPICH2 for LAMMPS mpi for two days now. I am in need of help please. First, they said be careful of choosing 32 bit or 64 bit in the download page, which I do not see anywhere. Also, when I attempt to run it with windows version, it says that mpich2mpi.dll is not found. Last bu not least, when I try to use a linux interface on windows to do the configure option, it said no c compiler found. I have MinGW installed too. I am at my wits here. Please let me know if you can assist me. Regards Ali Radhi Advanced Research Lab for Multifunctional Lightweight Structures (ARL-MLS) Department of Mechanical & Industrial Engineering Faculty of Applied Science & Engineering | University of Toronto Room: MB110, Lassonde Mining Building, 170 College Street, Toronto, ON, Canada. M5S 3E3 _______________________________________________ discuss mailing list discuss(a)mpich.org To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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MPICH2 installation
by Ali Radhi 02 Mar '16

02 Mar '16

Hi I have been trying to install MPICH2 for LAMMPS mpi for two days now. I am in need of help please. First, they said be careful of choosing 32 bit or 64 bit in the download page, which I do not see anywhere. Also, when I attempt to run it with windows version, it says that mpich2mpi.dll is not found. Last bu not least, when I try to use a linux interface on windows to do the configure option, it said no c compiler found. I have MinGW installed too. I am at my wits here. Please let me know if you can assist me. Regards Ali Radhi Advanced Research Lab for Multifunctional Lightweight Structures (ARL-MLS) Department of Mechanical & Industrial Engineering Faculty of Applied Science & Engineering | University of Toronto Room: MB110, Lassonde Mining Building, 170 College Street, Toronto, ON, Canada. M5S 3E3 ________________________________ From: Ali Radhi Sent: 02 March 2016 14:11 To: discuss(a)mpich.org Subject: MPICH2 installation Hi I have been trying to install MPICH2 for LAMMPS mpi for two days now. I am in need of help please. First, they said be careful of choosing 32 bit or 64 bit in the download page, which I do not see anywhere. Also, when I attempt to run it with windows version, it says that mpich2mpi.dll is not found. Last bu not least, when I try to use a linux interface on windows to do the configure option, it said no c compiler found. I have MinGW installed too. I am at my wits here. Please let me know if you can assist me. Regards Ali Radhi Advanced Research Lab for Multifunctional Lightweight Structures (ARL-MLS) Department of Mechanical & Industrial Engineering Faculty of Applied Science & Engineering | University of Toronto Room: MB110, Lassonde Mining Building, 170 College Street, Toronto, ON, Canada. M5S 3E3 _______________________________________________ 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] MPI_Comm_split and end with Finalize
by K. N. Ramachandran 01 Mar '16

01 Mar '16

Hello Pavan, I have to try the outline as you have suggested and it could be more efficient as well. Since the startup process is currently working, I will keep this in mind, in case we need a better implementation. Thank you for the suggestions. On Tue, Mar 1, 2016 at 12:51 AM, Balaji, Pavan <balaji(a)anl.gov> wrote: > > I think you are overcomplicating the problem. If I understand this > correctly, you only need the server in order to give a common "port" for > all the clients to connect to. That's fine. But I don't understand why > you are doing an intercomm merge after connecting. I'd recommend this (for > N clients): > > 1. Client 1 connects to server. Server asks it to open a new port. > Client 1 does so and tells the server. Server disconnects from client 1. > > 2. For each client from 2 to N, client connects to server. Server asks it > connect to client 1's new port. Server disconnects from client. > > 3. Once it has given this information to all clients, server finalizes. > > -- Pavan > > > On Feb 27, 2016, at 6:00 PM, K. N. Ramachandran <knram06(a)gmail.com> > wrote: > > > > Hi Pavan, > > > > Thank you for the reply. I have presented only a very simplified case of > one server and one client and that is why the problem looks strange. > > > > The general case is one server acting as a meeting point and N clients > join the server and one intra comm is formed among them all. Then the > server splits off and terminates, leaving the intracomm and then letting > the clients work amongst themselves now. > > > > I had also tried MPI_Comm_disconnect on the server, after calling > MPI_Comm_split, but even in that case, the server busy-waits for the client > at Finalize. The single server and single client was only to demonstrate > the problem I am facing. > > > > Please let me know if you might need more information. Thanks. > > > > On Sat, Feb 27, 2016 at 11:59 AM, Balaji, Pavan <balaji(a)anl.gov> wrote: > > > > It's unclear what exactly you are trying to do here. Why are the > clients connecting to the server and then immediately "splitting off"? > > > > Your "split-off" functionality needs to be implemented using > MPI_Comm_disconnect, not using MPI_Comm_split. Comm_split divides a > communicator into smaller communicators, but all processes are still very > much connected. So as long as the server process is connected to the > client processes, it might still receive messages from the client process > and thus cannot simply exit. Comm_disconnect, on the other hand, > disconnects the client processes from the server processes. > > > > But then again, I have no idea why you are connecting to the server and > disconnecting immediately. > > > > -- Pavan > > > > > On Feb 26, 2016, at 5:31 PM, K. N. Ramachandran <knram06(a)gmail.com> > wrote: > > > > > > Hello all, > > > > > > I have recently begun working on a project that uses MPICH-3.2 and I > am trying to resolve an issue where a server process busy waits at > MPI_Finalize. > > > > > > We are trying to create a server process that accepts incoming > connections from a known number of clients (say, N clients), forms a new > communicator amongst everyone (server and clients) and then splits itself > from the group and terminates, so that the clients now only work with each > other. > > > > > > For very problem specific reasons, we cannot do > > > 'mpiexec -np N (other args)' > > > > > > So we have a server that publishes a service name to a nameserver and > clients lookup the name to join the server. The server and client processes > are started with separate calls to mpiexec, one to start the server and the > rest N calls to start the clients. > > > > > > The server process busy-waits at the MPI_Finalize call, after it > splits from the communicator and only finishes when all other clients reach > their MPI_Finalize too. > > > > > > Consider a simplified case of only one server and one client. The > simplified pseudocode is: > > > > > > Server process: > > > MPI_Init(); > > > MPI_Open_port(...); > > > MPI_Publish_name(...); //publish service name to nameserver > > > > > > MPI_accept(...); // accept incoming connections and store into > intercomm > > > MPI_Intercomm_merge(...); // merge new client into intra-comm > > > > > > // now split the server from the client > > > MPI_Comm_rank(intra comm, rank); // rank=0 > > > MPI_Comm_split(intra comm, (rank==0), rank, lone comm); > > > > > > MPI_Finalize(); // busy-waits here till client's sleep duration > > > > > > Client process: (simplified - assuming only one client is trying to > connect) > > > MPI_Init(); > > > MPI_Lookup_name(..); > > > MPI_Connect(...) > > > > > > // merge > > > MPI_Intercomm_merge(...); // merge with server > > > > > > // get rank and split > > > MPI_Comm_rank(intra comm, rank); // rank=1 > > > MPI_Comm_split(intra comm, rank==0, rank, lone comm); > > > > > > sleep(10); // sleep for 10 seconds - causes server to busy wait at > MPI_Finalize for sleep duration > > > > > > MPI_Finalize(); // server and client finish here > > > > > > So my questions are: > > > > > > 1) Is busy-wait at MPI_Finalize the expected behaviour? > > > > > > 2) How to truly "disconnect" the server, so that it can end > immediately at MPI_Finalize()? I had tried MPI_Comm_disconnect (also > MPI_Comm_free) on both the server and client, but that didn't help. > > > > > > 3) We don't want to see the server process consuming one core at 100% > while it waits at MPI_Finalize. Are other alternatives apart from making > the server process sleep, wakeup and keep polling a client, and then > finally call MPI_Finalize? > > > > > > Thank you for any inputs that you can give here. > > > > > > > > > Regards, > > > K.N.Ramachandran > > > _______________________________________________ > > > discuss mailing list discuss(a)mpich.org > > > To manage subscription options or unsubscribe: > > > https://lists.mpich.org/mailman/listinfo/discuss > > > > _______________________________________________ > > discuss mailing list discuss(a)mpich.org > > To manage subscription options or unsubscribe: > > https://lists.mpich.org/mailman/listinfo/discuss > > > > > > > > Regards, > > K.N.Ramachandran > > _______________________________________________ > > discuss mailing list discuss(a)mpich.org > > To manage subscription options or unsubscribe: > > https://lists.mpich.org/mailman/listinfo/discuss > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss > Regards, K.N.Ramachandran _______________________________________________ discuss mailing list discuss(a)mpich.org To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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