[OMPI users] Oversubscribing

2018-01-24 Thread Benjamin Brock
Recently, when I try to run something locally with OpenMPI with more than two ranks (I have a dual-core machine), I get the friendly message -- There are not enough slots available in the system to satisfy the 3 slots that wer

Re: [OMPI users] Oversubscribing

2018-01-24 Thread Jeff Hammond
mpirun --oversubscribe $OTHER_ARGS Jeff On Wed, Jan 24, 2018 at 12:13 PM, Benjamin Brock wrote: > > Recently, when I try to run something locally with OpenMPI with more than two ranks (I have a dual-core machine), I get the friendly message > > ---

[OMPI users] Oversubscribing When Running Locally

2018-01-24 Thread Benjamin Brock
Recently, when I try to run something locally with OpenMPI with more than two ranks (I have a dual-core machine), I get the friendly message -- There are not enough slots available in the system to satisfy the 3 slots that wer

Re: [OMPI users] Oversubscribing When Running Locally

2018-01-24 Thread Jeff Squyres (jsquyres)
Ben -- Did you not see Jeff Hammond's reply earlier today? https://www.mail-archive.com/users@lists.open-mpi.org//msg31964.html > On Jan 24, 2018, at 5:40 PM, Benjamin Brock wrote: > > Recently, when I try to run something locally with OpenMPI with more than two > ranks (I have a dual-co

Re: [OMPI users] Oversubscribing When Running Locally

2018-01-24 Thread Gilles Gouaillardet
Benjamin, There was no need to open a new thread with the same title and a slightly modified question, it just added some confusion. If you want to allow oversubscription by default, you can insert the following line in your /etc/openmpi-mca-params.conf (update the path if needed) rmaps_base_ove