20 Apr
2012
20 Apr
'12
5:08 p.m.
On Fri, Apr 20, 2012 at 12:52 PM, Burns, Scott S scott.s.burns@vanderbilt.edu wrote:
- Separately from the above experiment, I ran one gpu subject using 4 GTX 480s and saw no significant time difference. Is this to be expected, ie your CUDA code doesn't scale across multiple GPUs? Just curious, certainly not a deal-breaker if it doesn't.
Nothing I added (primarily mri_ca_register and mri_em_register) makes use of multiple GPUs, any more than Freesurfer makes use of multiple cores. I don't know about any additions since. If you have more than one GPU, you can run more than one subject at once (if you point each run to a different GPU). Also, make sure you're using the Fermi binaries on that GTX 480.
Richard