Dear Peter,
Thank you very much for your suggestion. You mean to say, 4.6 hrs duration for recon-all process is because of cpu not gpu? If I run this process without gpu card then I should get the same speed. Right? Ok I will remove my graphic card and run directly from mother board connection which will use only cpu. I just want to know what will be difference?
If the process will be completed in ~4.6 hrs, then installing higher end graphic must reduce the duration further. If so then I will go for higher end graphic card.
Thanks Ramesh
On Wed, May 24, 2017 at 9:38 PM, Senften, Peter peter.senften@ubc.ca wrote:
Hi Ramesh,
I do not know if you have considered this at all but I at least wanted to bring it to your attention. If you have please disregard.
I've been doing I.T. for over 20 years and the Nvidia card you have listed is the Geforce 610 concerns me that all of the effort you're going through won't be worth it in the end. It is several years old, released in May of 2012, and is a very basic card. I would be surprised if the CUDA code path runs quicker than your CPU because, even when it was released, it was the lowest end card of the 600 series. Unless you have a higher end Nvidia card, such as the 970, 980, 1060 (or higher) your CPU will very likely be faster in the recon-all process.
Best,
Peter
*From:* freesurfer-bounces@nmr.mgh.harvard.edu [ freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Ramesh Babu [ mgrameshbabu2013@gmail.com] *Sent:* Wednesday, May 24, 2017 3:51 AM *To:* Freesurfer support list *Subject:* Re: [Freesurfer] cuda-gpu problem
Dear Richard, This command recon-all -all -i grp237_t1.nii -s grp237 -sd grp237 -use-gpu -itkthreat 4 took 5.18 hrs and recon-all -all -i grp237_t1.nii -s grp237 -sd grp237 -use-gpu -openmp 4 took 4.69 hrs without any error.
Thank you very much for your suggestions.
Ramesh
On Tue, May 23, 2017 at 3:37 PM, R Edgar freesurfer.rge@gmail.com wrote:
On 23 May 2017 at 01:10, Ramesh Babu mgrameshbabu2013@gmail.com wrote:
I have one question. When use -use-gpu flag, can I use -itkthreads 8 or
-use
openmp 8 flag?
That's not something I've tested. I think that OpenMP at least is OK (things will run in parallel on the CPU or the GPU.
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