Apologies in advance, as this seems so basic that I can't belive I can't find it in the docs, however, I can't find it in the docs. I have just built an MPICH 3.0.4 and have used it to compile the SKaMPI test suite (all on an ArchLinux platform) I can run the test suite with a /path/to/mpirun -np 2 ./skampi -i ski/skampi_pt2pt.ski and it works, however, it's clearly (?) using the SHM channel ... [proxy:0:[email protected]] PMI response: cmd=get_result rc=0 msg=success value=(vector,(0,1,1)) [proxy:0:[email protected]] got pmi command (from 0): put kvsname=kvs_12233_0 key=sharedFilename[0] value=/dev/shm/mpich_shar_tmpUq7v2w [proxy:0:[email protected]] cached command: sharedFilename[0]=/dev/shm/mpich_shar_tmpUq7v2w ... I'm normally an OpenMPI man and I'd like to try and force MPICH to use a TCP/IP "channel" along the lines of telling OpenMPI to use a TCP/IP "trasnport" with a -mca btl tcp,self so, what's the MPICH incantation to achieve the same thing ? Yours, clearly missing something obvious, Kevin _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss