The environment variable 'FREESURFER_CUDA_DEVICE' defines the device number of the GPU device. Although I dont think you will see much benefit in splitting the surface processing across two gpus, as the CUDA surface code is not as optimal as the volume-based mri_ca_register code for parallel processing.
Nick
On Mon, 2013-02-04 at 19:31 -0500, R Edgar wrote:
On Mon, Feb 4, 2013 at 6:54 PM, Zhongtian Dai dai@uchicago.edu wrote:
Thanks for the speedy response. I think we will go with GTX 660 Ti with 2GB GPU RAM. We don't have a lot of subjects (as we hope to have) to analyze, so maybe we will try splitting left and right hemispheres to two graphic cards if our CPU RAM doesn't deplete. How do you designate the cuda commands to a certain GPU?
You'll have to ask Nick that - I don't remember, I'm afraid.
Richard _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer