Reuti
2017-04-09 10:40:29 UTC
Hi,
While I noticed an automatic core binding in Open MPI 1.8 (which in a shared cluster may lead to oversubscribing of cores), I can't spot this any longer in the 2.x series. So the question arises:
- Was this a general decision to no longer enable automatic core binding?
First I thought it might be because of:
- We define plm_rsh_agent=foo in $OMPI_ROOT/etc/openmpi-mca-params.conf
- We compiled with --with-sge
But also started on the command line by `ssh` to the nodes, there seems no automatic core binding to take place any longer.
-- Reuti
While I noticed an automatic core binding in Open MPI 1.8 (which in a shared cluster may lead to oversubscribing of cores), I can't spot this any longer in the 2.x series. So the question arises:
- Was this a general decision to no longer enable automatic core binding?
First I thought it might be because of:
- We define plm_rsh_agent=foo in $OMPI_ROOT/etc/openmpi-mca-params.conf
- We compiled with --with-sge
But also started on the command line by `ssh` to the nodes, there seems no automatic core binding to take place any longer.
-- Reuti