Hello, I'm trying to use openmpi 1.8.8 on a cluster managed by OAR, however i have some troubles with the default slots number.
I have reserved one core on two nodes (each has 12 cores): # cat $OAR_NODEFILE nef097.inria.fr nef098.inria.fr but: mpirun -np 2 --mca plm_rsh_agent oarsh -hostfile $OAR_NODEFILE ./NPmpi runs only on the first node: 0: nef097 1: nef097 Now starting the main loop 0: 1 bytes 7 times --> 0.00 Mbps in 12571.35 usec [skip] If i use a nodefile like this, it works: nef097.inria.fr slots=1 nef098.inria.fr slots=1 The doc says however that the default value is 1, and openmpi 1.6.4 works fine (the OS is Centos 7, btw) Am i missing something ? -- Nicolas NICLAUSSE Service DREAM INRIA Sophia Antipolis http://www-sop.inria.fr/ 2004 route des lucioles - BP 93 Tel: (33/0) 4 92 38 76 93 06902 SOPHIA-ANTIPOLIS cedex (France) Fax: (33/0) 4 92 38 76 02
