Re: [OMPI users] OpenMPI-5.0.5 & 5.0.6 build failure: error: expected expression before ‘struct’

Dear Sangam, as Gilles suggested, please try add self for loopback: mpirun --mca pml ob1 --mca btl ofi,self … since the error is: [g100n052:0] *** An error occurred in MPI_Init [g100n052:0] *** reported by process [901316609,0] [g100n052:0] *** on a NULL communicator [g100n052:0

Re: [OMPI users] Help diagnosing MPI+OpenMP application segmentation fault only when run with --bind-to none

Dear Angel, You’re using MPI_Probe() with Threads; that’s not safe. Please consider using MPI_Mprobe() together with MPI_Mrecv(). However, you mention running with only one Thread — setting OMP_NUM_THREADS=1, assuming you didn’t set using omp_set_num_threads() again, or use num_threads() clause…

Re: [OMPI users] Differences 4.0.3 -> 4.0.4 (Regression?)

Hello Michael, > On 10. Aug 2020, at 20:52, Michael Fuckner via users > wrote: > just tried 4.0.5rc1 and this is working as 4.0.3 (directly and via slurm). So > it is just 4.0.4 not working. Diffed Config and build.sh, but couldn't find > anything. I don't know why, but I'll accept it... This