> What version of Open MPI are you trying to use? Open MPI 2.1.1-2 as distributed by Arch Linux.
> Also, could you describe something about your system. This is all in shared memory on a MacBook Pro; no networking involved. The seg fault with the code example above looks like this: [xiii@shini kmer_hash]$ g++ minimal.cpp -o minimal `shmemcc --showme:link` [xiii@shini kmer_hash]$ !shm shmemrun -n 2 ./minimal [shini:08284] *** Process received signal *** [shini:08284] Signal: Segmentation fault (11) [shini:08284] Signal code: Address not mapped (1) [shini:08284] Failing at address: 0x18 [shini:08284] [ 0] /usr/lib/libpthread.so.0(+0x11da0)[0x7f06fb763da0] [shini:08284] [ 1] /usr/lib/openmpi/openmpi/mca_spml_yoda.so(mca_spml_yoda_ get+0x7da)[0x7f06e0eef0aa] [shini:08284] [ 2] /usr/lib/openmpi/openmpi/mca_ atomic_basic.so(atomic_basic_lock+0xb2)[0x7f06e08d90d2] [shini:08284] [ 3] /usr/lib/openmpi/openmpi/mca_atomic_basic.so(mca_atomic_ basic_fadd+0x4a)[0x7f06e08d949a] [shini:08284] [ 4] /usr/lib/openmpi/liboshmem.so.20(shmem_int_fadd+0x90)[ 0x7f06fc5a7660] [shini:08284] [ 5] ./minimal(+0x94f)[0x55a5cde7e94f] [shini:08284] [ 6] /usr/lib/libc.so.6(__libc_start_main+0xea)[ 0x7f06fb3baf6a] [shini:08284] [ 7] ./minimal(+0x80a)[0x55a5cde7e80a] [shini:08284] *** End of error message *** -------------------------------------------------------------------------- shmemrun noticed that process rank 1 with PID 0 on node shini exited on signal 11 (Segmentation fault). -------------------------------------------------------------------------- Cheers, Ben
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