limit number of threads used by Paraview

ParaView Support
1

Hi,

I am currently trying out Paraview 5.6.0 (with OpenGL and OSPRay 1.7.3 support) on a machine sharing ressources with multiple users - client/server on the same machine.
I could limit the number of thread used by OSPRay rendering using OSPRAY_THREADS environment variable however I do not know if it is possible to do the same with Paraview itself (or VTK) - to get more control over resource usage.

Thanks.
Eric

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2

Hey Eric, my company had this same problem. Use both KNOB_MAX_WORKER_THREADS and OSPRAY_THREADS as environmental variables to cap CPU threads and memory usage. We have noticed that it will actually speed up your simulations as well since there won’t be an i/o hit from constantly changing number of threads.

#!/bin/bash
NP=$1
export KNOB_MAX_WORKER_THREADS=$NP
export OSPRAY_THREADS=$NP
echo $KNOB_MAX_WORKER_THREADS

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