CLASSIFICATION: UNCLASSIFIED A little bit more background information, we were trying to run it on Wai (large SMP machine) and we ran into issue getting more than 64 core for our setup. Let’s see if a simple MPI hello world will show where the limit is coming from.
thanks -simon -----Original Message----- From: ParaView [mailto:[email protected]] On Behalf Of Andy Bauer Sent: Wednesday, September 13, 2017 12:52 PM To: Utkarsh Ayachit <[email protected]> Cc: [email protected] Subject: [Non-DoD Source] Re: [Paraview] Using 64 or more cores on a single node when running client/server All active links contained in this email were disabled. Please verify the identity of the sender, and confirm the authenticity of all links contained within the message prior to copying and pasting the address to a Web browser. ________________________________ If you're running on the DSRCs I'm guessing that the limit is coming from the node selection option (i.e. "#PBS -l select=8:ncpus=36:mpiprocs=8"). mpiprocs here is the number of MPI processes per node while ncpus is the number of cores per node (in this case only nodes that have 36 cores per node will be used. I've never tried having mpiprocs higher than ncpus. I would guess that a simple MPI helloworld would really show whether or not this is where the limit is coming from. Best, Andy On Wed, Sep 13, 2017 at 12:12 PM, Utkarsh Ayachit <[email protected] < Caution-mailto:[email protected] > > wrote: > It should be related to your mpi environment: may be oversubscribing (more > than one mpi process by core) is not the default behavior. I am tempted to second that. There's nothing in ParaView that checks how many cores your node has, as a result if there's a cap, it's coming from the MPI implementation itself. _______________________________________________ Powered by Caution-www.kitware.com < Caution-http://www.kitware.com > Visit other Kitware open-source projects at Caution-http://www.kitware.com/opensource/opensource.html < Caution-http://www.kitware.com/opensource/opensource.html > Please keep messages on-topic and check the ParaView Wiki at: Caution-http://paraview.org/Wiki/ParaView < Caution-http://paraview.org/Wiki/ParaView > Search the list archives at: Caution-http://markmail.org/search/?q=ParaView < Caution-http://markmail.org/search/?q=ParaView > Follow this link to subscribe/unsubscribe: Caution-http://public.kitware.com/mailman/listinfo/paraview < Caution-http://public.kitware.com/mailman/listinfo/paraview > CLASSIFICATION: UNCLASSIFIED
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