[OMPI users] problems with establishing an intercommunicator

Hello, I'm trying to connect two independent MPI process groups with an intercommunicator, using ports, as described in sec. 10.4 of the MPI standard. One group runs a server, the other a client. The server opens a port, publishes the port's name, and waits for a connection. The client obt

Re: [OMPI users] Problem running openmpi-1.4.3

Ralph Castain wrote: You need to set your LD_LIBRARY_PATH to point to where you installed openmpi. On Mar 8, 2011, at 5:47 PM, Amos Leffler wrote: Hi, I am trying to get openmpi-1.4.3 to run but am having trouble. It is run using SUSE-11.3 with Intel XE-2011 Composer C and Fortran comp

Re: [OMPI users] Problem running openmpi-1.4.3

You need to set your LD_LIBRARY_PATH to point to where you installed openmpi. On Mar 8, 2011, at 5:47 PM, Amos Leffler wrote: > Hi, >I am trying to get openmpi-1.4.3 to run but am having trouble. > It is run using SUSE-11.3 with Intel XE-2011 Composer C and Fortran > compilers. The comp

Re: [OMPI users] Problem running openmpi-1.4.3

you need to set your LD_LIBRARY_PATH to contain the MPI libraries. The more experienced MPI users in this mailing list would tell you what to include. On Tue, Mar 8, 2011 at 4:47 PM, Amos Leffler wrote: > Hi, >I am trying to get openmpi-1.4.3 to run but am having trouble. > It is run u

[OMPI users] Problem running openmpi-1.4.3

Hi, I am trying to get openmpi-1.4.3 to run but am having trouble. It is run using SUSE-11.3 with Intel XE-2011 Composer C and Fortran compilers. The compilers installed without problems. The openmpi file was downloaded and unzipped and untarred. The ./configure command was run and it w

Re: [OMPI users] MPI_ALLREDUCE bug with 1.5.2rc3r24441

Try as I might, I cannot reproduce this error. :-( I only have the intel compiler version 11.x, though -- not 12. Can you change your test to use MPI_Reduce_local with INTEGER8 and see if the problem still occurs? (it probably will, but it is a significantly simpler code path to get down to t

Re: [OMPI users] multi-threaded programming

Durga Choudhury wrote: A follow-up question (and pardon if this sounds stupid) is this: If I want to make my process multithreaded, BUT only one thread has anything to do with MPI (for example, using OpenMP inside MPI), then the results will be correct EVEN IF #1 or #2 of Eugene holds true.

Re: [OMPI users] multi-threaded programming

A follow-up question (and pardon if this sounds stupid) is this: If I want to make my process multithreaded, BUT only one thread has anything to do with MPI (for example, using OpenMP inside MPI), then the results will be correct EVEN IF #1 or #2 of Eugene holds true. Is this correct? Thanks Durg

[OMPI users] multi-threaded programming

Let's say you have multi-threaded MPI processes, you request MPI_THREAD_MULTIPLE and get MPI_THREAD_MULTIPLE, and you use the self,sm,tcp BTLs (which have some degree of threading support). Is it okay to have an [MPI_Isend|MPI_Irecv] on one thread be completed by an MPI_Wait on another thread?

Re: [OMPI users] Two Instances of Same Process Rather Than Two SeparateProcesses

Jeff Squyres (jsquyres) wrote: This usually indicates a mismatch of MPI installations - eg, you compiled against one MPI installation but then accidentally used the mpirun from a different MPI installation. Sent from my phone. No type good. On Mar 8, 2011, at 4:36 AM, "Clark Britan" wrote:

Re: [OMPI users] Two Instances of Same Process Rather Than Two SeparateProcesses

This usually indicates a mismatch of MPI installations - eg, you compiled against one MPI installation but then accidentally used the mpirun from a different MPI installation. Sent from my phone. No type good. On Mar 8, 2011, at 4:36 AM, "Clark Britan" wrote: > I just installed OpenMPI on m

Re: [OMPI users] Number of processes and spawn

Hi Ralph, I've did some more tests, hope this can help. *Using OpenMPI-1.5* - The program works correctly doing a multiple spawn up to 128 cpus. - When spawning to more than 129 cpus it hungs during the spawn. I've discovered that just before the spwaning all the processes liying on one node

[OMPI users] Two Instances of Same Process Rather Than Two Separate Processes

I just installed OpenMPI on my Linux Ubuntu 10.04 LTS 64 bit computer. I downloaded the most recent version of OpenMPI and ran the configure and make commands. I then tried to run a CFD software called FDS using 2 of the 12 available processors (single node) as a test. I split my computational do

[OMPI users] Segmentation faults

Hi, I need to use Open MPI to distribute 2d-array in the PGM file among 10 working computers. Then I need to manipulate each value of the array to get a negative image (255-i) and then print the output back. I'm thinking of using mpi_scatterv and mpi_gatherv to distribute the data. After i compile