[OMPI users] Memchecker report on v1.3b2 (includes potential bug reports)

2008-11-19 Thread François PELLEGRINI
Hello all, I am the main developer of the Scotch parallel graph partitioning package, which uses both MPI and Posix Pthreads. I have been doing a great deal of testing of my program on various platforms and libraries, searching for potential bugs (there may still be some ;-) ). The new memchec

Re: [OMPI users] Memchecker report on v1.3b2 (includes potential bug reports)

2008-11-19 Thread François PELLEGRINI
Bonjour Shiqing, Shiqing Fan wrote: > Dear François, > > Thanks a lot for your report, it's really a great help for us. :-) No problem. Your software helps me too, so as soon as you have fixes and new builds please tell me, so that I can try again. > For the issues: > 1) When you got "Condit

[OMPI users] Bogus memcpy or bogus valgrind record

2009-03-28 Thread François PELLEGRINI
Hello all, When running a small MPI program under valgrind control, I get worrying error messages : ==28358== Source and destination overlap in memcpy(0x4A726A0, 0x4A726A8, 16) ==28358==at 0x40236C9: memcpy (mc_replace_strmem.c:402) ==28358==by 0x407CA1C: ompi_ddt_copy_content_same_ddt (

Re: [OMPI users] Bogus memcpy or bogus valgrind record

2009-04-23 Thread François PELLEGRINI
Hello all, I have had no answers regarding the trouble (OpenMPI bug ?) I evidenced when combining OpenMPI and valgrind. I tried it with a newer version of OpenMPI, and the problems persist, with new, even more worrying, error messages being displayed : ==32142== Warning: client syscall munmap t

[OMPI users] OpenMPI deadlocks and race conditions ?

2009-05-13 Thread François PELLEGRINI
Hello all, I sometimes run into deadlocks in OpenMPI (1.3.3a1r21206), when running my MPI+threaded PT-Scotch software. Luckily, the case is very small, with 4 procs only, so I have been able to investigate it a bit. It seems that matches between commnications are not done properly on cloned commu

Re: [OMPI users] OpenMPI deadlocks and race conditions ?

2009-05-15 Thread François PELLEGRINI
Bonjour Eugene, users-requ...@open-mpi.org wrote: > Date: Thu, 14 May 2009 17:06:07 -0700 > From: Eugene Loh > Subject: Re: [OMPI users] OpenMPI deadlocks and race conditions ? > To: Open MPI Users > Message-ID: <4a0cb1ef.5050...@sun.com> > Content-Type: text/plain; format=flowed; charset=ISO-8