Re: [OMPI users] Inter vs Intracommunicator...Who is the best?

But who is the best between the intercommunicator and intracommunicator? Is better use an intercommunicator with Send/Recv or Bcast... or is better use the MPI_Intercomm_merge and to use the Send/Recv or Bcast inside the new intracommunicator created? I talk about the performance...is more faste

[OMPI users] Inter vs Intracommunicator...Who is the best?

I have a simple question for you... But who is the best between the intercommunicator and intracommunicator? Is better use an intercommunicator with Send/Recv or Bcast... or is better use the MPI_Intercomm_merge and to use the Send/Recv or Bcast inside the new intracommunicator created? I ta

Re: [OMPI users] MPI on large clusters

I think the answer to all your questions is: "it depends on your application." MPI is used on extremely large clusters (many thousands of nodes), but with applications that were specially written for those large numbers of nodes. You need to look at the specific requirements of your application (G

Re: [OMPI users] Perl and MPI

On Sep 15, 2006, at 10:36 AM, imran shaik wrote: Can you elaborate on this.? I have few doubts as well: 1) OpenMPI runtime supports SGE?? Does it uses SGE instead of MPI runtime when it finds SGE running?? It's a difficult question if you expect an answer describing the deep internals of

Re: [OMPI users] Perl and MPI

Ok, thanks for the info Renato. Have a nice week end. Imran Renato Golin wrote: On 9/15/06, imran shaik wrote: > Where can i get MPI::Simple?? $ cpan cpan> install Parallel::MPI::Simple you can try other MPI implementations but I guess mpich is the only one that will work... cheers, --

Re: [OMPI users] Perl and MPI

Thanks prakash. Cheers, Imran Prakash Velayutham wrote: AFAIK, both those modules work with MPI standard API and not others. The MPI::Simple I mentioned is actually Parallel::MPI::Simple. Both Parallel::MPI and Parallel::MPI::Simple are available from CPAN. Prakash imran shaik wrote: >

Re: [OMPI users] Perl and MPI

On 9/15/06, imran shaik wrote: Where can i get MPI::Simple?? $ cpan cpan> install Parallel::MPI::Simple you can try other MPI implementations but I guess mpich is the only one that will work... cheers, --renato

Re: [OMPI users] Perl and MPI

AFAIK, both those modules work with MPI standard API and not others. The MPI::Simple I mentioned is actually Parallel::MPI::Simple. Both Parallel::MPI and Parallel::MPI::Simple are available from CPAN. Prakash imran shaik wrote: > Hi Prakash, > Do i need MPI runtime environment for sure to ue t

[OMPI users] MPI on large clusters

Hi folks, Is MPI suitable for running jobs on large clusters?? Is it best suited only for SMP ? I used MPI on relatively small cluster. But now i have to recommend MPI for a relatively large 600 node cluster. Shall I ?? The nature of jobs is well, processing tera bytes of data. Th

Re: [OMPI users] Perl and MPI

Hi Prakash, Do i need MPI runtime environment for sure to ue those perl modules?? Cant i use some other clustring software.? Where can i get MPI::Simple?? Imran >Hello, >My users use Parallel::MPI and MPI::Simple perl modules consistently >without issues. But I am not sure of the

Re: [OMPI users] Perl and MPI

On 9/15/06 10:36 AM, "imran shaik" wrote: > Hi Renato, > thanks for your response. > Can you elaborate on this.? > I have few doubts as well: > 1) OpenMPI runtime supports SGE?? Does it uses SGE instead of MPI runtime > when it finds SGE running?? SGE support will be included in Open MP

Re: [OMPI users] Perl and MPI

Hi Renato, thanks for your response. Can you elaborate on this.? I have few doubts as well: 1) OpenMPI runtime supports SGE?? Does it uses SGE instead of MPI runtime when it finds SGE running?? 2) Is it possible to check point and run MPI jobs? 3) Is it possible to add and remove pro

Re: [OMPI users] Perl and MPI

Hi renato, thanks man! That was the detailed explanation. I got teh perl module too... Imran Renato Golin wrote: On 9/13/06, imran shaik wrote: > I need to run parallel jobs on a cluster typically of size 600 nodes and > running SGE, but the programmers are good at perl but not C or C

Re: [OMPI users] MPI_Recv, is it possible to switch on/off aggresive mode during runtime?

Brian Barrett wrote: On Jul 5, 2006, at 8:54 AM, Marcin Skoczylas wrote: I saw some posts ago almost the same question as I have, but it didn't give me satisfactional answer. I have setup like this: GUI program on some machine (f.e. laptop) Head listening on tcpip socket for commands from G