[OMPI users] Problem including C MPI code from C++ using C linkage

__cplusplus #include #define __cplusplus #else #include #endif in c-code.h, which seems to work but isn't exactly smooth. Is there another way around this, or has linking C MPI code with C++ never come up before? Thanks, /Patrik Jonsson

Re: [OMPI users] Problem including C MPI code from C++ using C linkage

Hi everyone, Thanks for the suggestions. On Thu, Sep 2, 2010 at 6:41 AM, Jeff Squyres wrote: > On Aug 31, 2010, at 5:39 PM, Patrik Jonsson wrote: > >> It seems a bit presumptuous of mpi.h to just include mpicxx.h just >> because __cplusplus is defined, since that makes it

[OMPI users] Asymmetric performance with nonblocking, multithreaded communications

Hi all, I'm seeing performance issues I don't understand in my multithreaded MPI code, and I was hoping someone could shed some light on this. The code structure is as follows: A computational domain is decomposed into MPI tasks. Each MPI task has a "master thread" that receives messages from the

Re: [OMPI users] Asymmetric performance with nonblocking, multithreaded communications

Replying to my own post, I'd like to add some info: After making the master thread put more of a premium on receiving the missing messages, the problem went away. Both tasks now appear to keep up on the messages sent from the other. However, after about a minute and ~1.5e6 messages exchanged, both

Re: [OMPI users] Asymmetric performance with nonblocking, multithreaded communications

Hi Yiannis, On Fri, Dec 9, 2011 at 10:21 AM, Yiannis Papadopoulos wrote: > Patrik Jonsson wrote: >> >> Hi all, >> >> I'm seeing performance issues I don't understand in my multithreaded >> MPI code, and I was hoping someone could shed some light on this

[OMPI users] mca_btl_sm_component_progress read an unknown type of header

Hi all, This question was buried in an earlier question, and I got no replies, so I'll try reposting it with a more enticing subject. I have a multithreaded openmpi code where each task has N+1 threads, the N threads send nonblocking messages that are received by the 1 thread on the other tasks.

[OMPI users] invalid write in opal_generic_simple_unpack

Hi, I'm trying to track down a spurious segmentation fault that I'm getting with my MPI application. I tried using valgrind, and after suppressing the 25,000 errors in PMPI_Init_thread and associated Init/Finalize functions, I'm left with an uninitialized write in PMPI_Isend (which I saw is not un

Re: [OMPI users] invalid write in opal_generic_simple_unpack

On Wed, Mar 14, 2012 at 3:43 PM, Jeffrey Squyres wrote: > On Mar 14, 2012, at 9:38 AM, Patrik Jonsson wrote: > >> I'm trying to track down a spurious segmentation fault that I'm >> getting with my MPI application. I tried using valgrind, and after >>