What are the allowable values for the –mca btl parameter on the mpirun command line?
– Jeff Jeffrey A. Cummings Engineering Specialist Mission Analysis and Operations Department Systems Analysis and Simulation Subdivision Systems Engineering Division Engineering and Technology Group The Aerospace Corporation 571-304-7548 jeffrey.a.cummi...@aero.org From: users [mailto:users-boun...@lists.open-mpi.org] On Behalf Of Andy Riebs Sent: Tuesday, October 09, 2018 2:34 PM To: firstname.lastname@example.org Subject: Re: [OMPI users] no openmpi over IB on new CentOS 7 system Noam, Start with the FAQ, etc., under "Getting Help/Support" in the left-column menu at https://www.open-mpi.org/ Andy ________________________________ From: Noam Bernstein <noam.bernst...@nrl.navy.mil><mailto:noam.bernst...@nrl.navy.mil> Sent: Tuesday, October 09, 2018 2:26PM To: Open Mpi Users <email@example.com><mailto:firstname.lastname@example.org> Cc: Subject: [OMPI users] no openmpi over IB on new CentOS 7 system Hi - I’m trying to get OpenMPI working on a newly configured CentOS 7 system, and I’m not even sure what information would be useful to provide. I’m using the CentOS built in libibverbs and/or libfabric, and I configure openmpi with just —with-verbs —with-ofi —prefix=$DEST also tried —without-ofi, no change. Basically, I can run with “—mca btl self,vader”, but if I try “—mca btl,openib” I get an error from each process: [compute-0-0][[24658,1],5][connect/btl_openib_connect_udcm.c:1245:udcm_rc_qp_to_rtr] error modifing QP to RTR errno says Invalid argument If I don’t specify the btl it appears to try to set up openib with the same errors, then crashes on some free() related segfault, presumably when it tries to actually use vader. The machine seems to be able to see its IB interface, as reported by things like ibstatus or ibv_devinfo. I’m not sure what else to look for. I also confirmed that “ulimit -l” reports unlimited. Does anyone have any suggestions as to how to diagnose this issue? thanks, Noam _______________________________________________ users mailing list email@example.com<mailto:firstname.lastname@example.org> https://lists.open-mpi.org/mailman/listinfo/users
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