Hi Daniel - That makes sense. You can set the number of threads that eddy_openmp uses with the OMP_NUM_THREADS environment variable:

https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=fsl;f42cb2e6.1611

Hope this helps,

Anastasia.

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Drucker, Daniel <DDRUCKER@mclean.harvard.edu>
Sent: Tuesday, June 15, 2021 6:29 PM
To: freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] TRACULA trac-all cores/threads

> Hi Daniel - Can you track down which command does this? I suspect that it's something in the pre- or post-processing, because I haven't added multi-threading to the main TRACULA executables (yet).

trac-all calls
trac-preproc calls
eddy_openmp

Daniel

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