yes, but -openmp N should give significant imrpovements up to about N=4
On Sat, 9 Feb 2019, Tim Schäfer wrote:
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I do not have experience with running on Google Cloud, but from what I know,
the common way is to run FreeSurfer in parallel over many subjects instead of
using openmp to speed up the process for a single subject.
So your desktop should run 4 subjects in parallel, and the cloud instance 16.
Not that bad.
Tim
On February 9, 2019 at 4:33 PM Yi-Fang Chuang <chua...@ym.edu.tw> wrote:
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Dear Freesurfer developers and users,
Has anyone had experience running Freesurfer on Linux VM on Google Cloud
Platform?
I have a question about runtime of recon-all -all.
The specs of VM on GCP as follows,
Linux CentOS 6, 16 CPU(Intel(R) Xeon(R) @ 2.50GHz) with 60 G memory
I installed Freesurfer v 6.0.0 and run recon-all -all -parallel -openmp num
No matter what number I put (6,8,12,16 after openmp), the recon-all runtime
of a single subject ranges 6-7 hours.
It's just disappointing to compare to my own desktop.
My own Desktop is Mac Pro (3.7 GHz quad-core intel xeon E5, 16G memory).
The recon-all runtime (Freesurfer version 5.3.0, no parallel) for a single
subject is usually 7~8 hours.
Is this a reasonable runtime given the setting of VM? Only 1-2 hour
shorter than my Mac Pro??
Or is there any configuration of VM I should pay attention to set up?
Thanks,
Yi-Fang Chuang
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