January 2014 - discuss - mailman3.cels.anl.gov

Re: [mpich-discuss] A problem in running mpi code on ubuntu 13.10
by Wesley Bland 27 Jan '14

27 Jan '14

The code is fine. The problem is most likely either the way you’re executing your code or the way you installed it. Can you tell us how you executed in on the command line to start? Thanks, Wesley

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A problem in running mpi code on ubuntu 13.10
by ehsan saei 27 Jan '14

27 Jan '14

Dear MPI users, Recently I moved to Ubuntu 13.10 and I got a problem with running my codes on ubutnu 13.10. After checking my code I tried to execute a hello world! code instead to make sure that the problem is from mpi or not. Then I find that rank of all processes is 0 and size is 1 independent from the number of processes that I use with mpiexec. herer is the code: #include <mpi.h> #include <iostream> using namespace std; int main(int argc ,char ** argv) { int size,rank; MPI_Init(&argc, &argv); MPI_Comm_size(MPI_COMM_WORLD, &size); MPI_Comm_rank(MPI_COMM_WORLD, &rank); cout<<rank<<endl; MPI_Finalize(); } Is there any thing wrong with this code? Thanks in advance, Ehsan

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Re: [mpich-discuss] how to decide master node in mpi cluster node.
by Bland, Wesley B. 25 Jan '14

25 Jan '14

Unfortunately we can't tell you that. Every cluster is set up differently and if your administrator has already set it up with a job scheduler, you will have to talk to that person to find out how to use it. Wesley On Jan 24, 2014, at 10:32 PM, "Bhimashankar Dhappadhule" <dhappabn(a)gmail.com<mailto:[email protected]>> wrote: Good Morning,Sir I think in my project i need to use job scheduler to submit programs to our MPI cluster nodes.Sir,can you please explain me which job scheduler i need to use and how to configure job scheduler. please can you tell me how to configure mpi cluster in ubuntu 12.04. Thanks You,Sir On Fri, Jan 24, 2014 at 11:05 PM, Wesley Bland <wbland(a)mcs.anl.gov<mailto:[email protected]>> wrote: First, take a look at the documentation that comes with MPICH. There should be a couple of PDFs in your distribution that provide an installation and usage guide. If you installed your package with a package manager and didn’t receive the documentation, you can get it at the website (www.mpich.org<http://www.mpich.org>). As for which node is the “master” and which is the “slave”, there isn’t really such a notion in MPI. The only node that is special is the one where you launch your job. That is just determine by where you are logged in at the time. If you have two hosts (host1, host2), and you are logged into host1, you’d launch your job using something like: mpiexec -host host1,host2 -n 2 ./myApp That would launch on both hosts. I’d highly recommend reading through the documentation provided to get more details about how to set everything up and then ask another question here if something is still unclear. Thanks, Wesley _______________________________________________ discuss mailing list discuss(a)mpich.org<mailto:[email protected]> To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list discuss(a)mpich.org<mailto:[email protected]> To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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Re: [mpich-discuss] how to decide master node in mpi cluster node.
by Bhimashankar Dhappadhule 24 Jan '14

24 Jan '14

Good Morning,Sir I think in my project i need to use job scheduler to submit programs to our MPI cluster nodes.Sir,can you please explain me which job scheduler i need to use and how to configure job scheduler. please can you tell me how to configure mpi cluster in ubuntu 12.04. Thanks You,Sir On Fri, Jan 24, 2014 at 11:05 PM, Wesley Bland <wbland(a)mcs.anl.gov> wrote: > First, take a look at the documentation that comes with MPICH. There > should be a couple of PDFs in your distribution that provide an > installation and usage guide. If you installed your package with a package > manager and didn’t receive the documentation, you can get it at the website > (www.mpich.org) > > As for which node is the “master” and which is the “slave”, there isn’t > really such a notion in MPI. The only node that is special is the one where > you launch your job. That is just determine by where you are logged in at > the time. If you have two hosts (host1, host2), and you are logged into > host1, you’d launch your job using something like: > > mpiexec -host host1,host2 -n 2 ./myApp > > That would launch on both hosts. > > I’d highly recommend reading through the documentation provided to get > more details about how to set everything up and then ask another question > here if something is still unclear. > > Thanks, > Wesley > > _______________________________________________ > 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 decide master node in mpi cluster node.
by Wesley Bland 24 Jan '14

24 Jan '14

First, take a look at the documentation that comes with MPICH. There should be a couple of PDFs in your distribution that provide an installation and usage guide. If you installed your package with a package manager and didn’t receive the documentation, you can get it at the website (www.mpich.org) As for which node is the “master” and which is the “slave”, there isn’t really such a notion in MPI. The only node that is special is the one where you launch your job. That is just determine by where you are logged in at the time. If you have two hosts (host1, host2), and you are logged into host1, you’d launch your job using something like: mpiexec -host host1,host2 -n 2 ./myApp That would launch on both hosts. I’d highly recommend reading through the documentation provided to get more details about how to set everything up and then ask another question here if something is still unclear. Thanks, Wesley

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Re: [mpich-discuss] how to decide master node in mpi cluster node.
by Bhimashankar Dhappadhule 24 Jan '14

24 Jan '14

Hello Sir, i am doing my UG project by using MPI cluster.i need form to cluster in mpi so,my question is that how i can decide which is my master node and which is my salve node while installing mpich2.please give me steps. thank you Sir. On Fri, Jan 24, 2014 at 10:27 PM, Wesley Bland <wbland(a)mcs.anl.gov> wrote: > What is your question? > > Wesley > > > > _______________________________________________ > 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 decide master node in mpi cluster node.
by Wesley Bland 24 Jan '14

24 Jan '14

What is your question? Wesley

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how to decide master node in mpi cluster node.
by Bhimashankar Dhappadhule 24 Jan '14

24 Jan '14

thank you.

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Re: [mpich-discuss] Problem with target_disp Parameter and 1-sided Messages
by Corey A. Henderson 20 Jan '14

20 Jan '14

Yes, sizeof(int). That's what I meant. My mistake. On Sun, Jan 19, 2014 at 12:16 PM, Balaji, Pavan <balaji(a)mcs.anl.gov> wrote: > > On Jan 19, 2014, at 12:12 PM, Corey A. Henderson <cahenderson(a)wisc.edu> > wrote: > > Thank you for the help. Indeed, changing the disp_unit on > MPI_Win_allocate from MPI_INT to sizeof(MPI_INT) does eliminate the seg > faults in the subsequent window accesses. > > sizeof(int), not sizeof(MPI_INT). > > _______________________________________________ > 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] Problem with target_disp Parameter and 1-sided Messages
by Balaji, Pavan 19 Jan '14

19 Jan '14

On Jan 19, 2014, at 12:12 PM, Corey A. Henderson <cahenderson(a)wisc.edu> wrote: > Thank you for the help. Indeed, changing the disp_unit on MPI_Win_allocate from MPI_INT to sizeof(MPI_INT) does eliminate the seg faults in the subsequent window accesses. sizeof(int), not sizeof(MPI_INT).

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