[OMPI users] usNIC BTL unrecognized payload type 255 when running under SLURM srun nut not mpiexec/mpirun

Hi everyone! We’re observing output such as the following when running non-trivial MPI software through SLURM’s srun [cn-11:52778] unrecognized payload type 255 [cn-11:52778] base = 0x9ce2c0, proto = 0x9ce2c0, hdr = 0x9ce300 [cn-11:52778]0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Re: [OMPI users] Can't connect using MPI Ports

I did a quick check across the v2.1 and v3.0 OMPI releases and both failed, though with different signatures. Looks like a problem in the OMPI dynamics integration (i.e., the PMIx library looked like it was doing the right things). I’d suggest filing an issue on the OMPI github site so someone

Re: [OMPI users] Can't connect using MPI Ports

>> The MPI Ports functionality (chapter 10.4 of MPI 3.1), mainly consisting of >> MPI_Open_port, MPI_Comm_accept and >> MPI_Comm_connect is not usuable without running an ompi-server as a third >> process? > > Yes, that’s correct. The reason for moving in that direction is that the > resource