Hi Luigi,
Please try: --map-by slot:pe=4 Probably Ralph is very busy, so something sliped his memory... Regards, Tetsuya > Hi all, > My system is a 64 core, with Debian 3.2.57 64 bit, GNU gcc 4.7, kernel Linux 3.2.0 and OpenMPI 1.8.1. > I developed an application to matching proteins files using OpenMP +OpenMPI. I compiled souce code with -fopenmp flag, I set OMP_NUM_THREADS=4 then I ran binary with mpiexec -np 16. > When the program runs, the top command show me that only 16 core are used. If I use the previous of OpenMPI (1.6.5) it works fine. Must I set anything in the new version? Where I wrong? > > Thanks in advance > > Luigi_______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/usersLink to this post: http://www.open-mpi.org/community/lists/users/2014/06/24712.php
