I completely forgot to mention which version of OpenMPI I am using, I'll gladly post additional info if required :
kyron@kyron ~/openmpi-1.2 $ ompi_info |head Open MPI: 1.2 Open MPI SVN revision: r14027 Open RTE: 1.2 Open RTE SVN revision: r14027 OPAL: 1.2 OPAL SVN revision: r14027 Prefix: /home/kyron/openmpi_i686 Configured architecture: i686-pc-linux-gnu Configured by: kyron Configured on: Wed Apr 4 10:21:34 EDT 2007 Le mercredi 4 avril 2007 11:47, Eric Thibodeau a écrit : > Hello all, > > First off, please excuse the attached code as I may be naïve in my > attempts to implement my own MPI_OP. > > I am attempting to create my own MPI_OP to use with MPI_Allreduce. I > have been able to find very little examples off the net of creating MPI_OPs. > My present references are "MPI The complete reference Volume 1 2nd edition" > and some rather good slides I found at > http://www.mpi-hd.mpg.de/personalhomes/stiff/MPI/ . I am attaching my "proof > of concept" code which fails with: > > [kyron:14074] *** Process received signal *** > [kyron:14074] Signal: Segmentation fault (11) > [kyron:14074] Signal code: Address not mapped (1) > [kyron:14074] Failing at address: 0x801da600 > [kyron:14074] [ 0] [0x6ffa6440] > [kyron:14074] [ 1] > /home/kyron/openmpi_i686/lib/openmpi/mca_coll_tuned.so(ompi_coll_tuned_allreduce_intra_recursivedoubling+0x700) > [0x6fbb0dd0] > [kyron:14074] [ 2] > /home/kyron/openmpi_i686/lib/openmpi/mca_coll_tuned.so(ompi_coll_tuned_allreduce_intra_dec_fixed+0xb2) > [0x6fbae9a2] > [kyron:14074] [ 3] > /home/kyron/openmpi_i686/lib/libmpi.so.0(PMPI_Allreduce+0x1a6) [0x6ff61e86] > [kyron:14074] [ 4] AllReduceTest(main+0x180) [0x8048ee8] > [kyron:14074] [ 5] /lib/libc.so.6(__libc_start_main+0xe3) [0x6fcbd823] > [kyron:14074] *** End of error message *** > > > Eric Thibodeau