Hi
The system should load nvidia module automatically. You could try to add modprobe nvidia to rc.load. However there might be a problem in your system and you could try to use nvidia-bug-report.sh and send the out put to either nvnews.net nvidia linux forum or to this list.
Knut J
On 04/06/2011 10:02 AM, Jordi Delgado wrote:
Hi Freesurfers,
What Operating System are you using?
I'm using CentOS 5.5 but with CUDA 3.2 and I have some problems with the nvidia.ko kernel module. Every time that I reboot the computer I have to make a modprobe and test with some CUDA SDK example... Other problems appear when I run multiple recon-all, often the processes crash with a kernel panic or simply with an abort.
I don't know if the OS is interfering in the execution...
Any idea will be apreciated...
Thank you!
2011/4/5 Ian Malone <ian.malone@drc.ion.ucl.ac.uk mailto:ian.malone@drc.ion.ucl.ac.uk>
On 05/04/11 16:55, Richard G. Edgar wrote: > > On Tue, 2011-04-05 at 16:30 +0100, Ian Malone wrote: >> Richard G. Edgar wrote: >>> On the standard test case we use here, a full recon-all run takes 8 >>> hours on a 3.2 GHz Nehalem core, and about 4 hours 20 mins when using >>> the Tesla C2050. >>> >>> >> >> Would I be right in concluding that a 4-core Nehalem (e.g. i7) has >> more throughput than the C2050 then? > > Yes, but less than having 3 CPU jobs, and one GPU one. I did test once, > and there isn't much penalty to running one recon-all job per core on a > Nehalem system. > > Right now, the CPU still does most of the work in the recon-all stream - > it's something of a game of Amdahl's Law Wac-A-Mole. You could always > try starting 4 GPU jobs at once.... I've not done the testing, but a > C2050 would probably have enough RAM, and in any given recon-all run, > the GPU does spend a lot of time idle. Hence, it would end up being > divvied up between the four jobs. > Thanks, that's interesting to know. -- imalone _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu <mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.-- Jordi Delgado Mengual PIC (Port d'Informació Científica) Campus UAB, Edifici D E-08193 Bellaterra, Barcelona Tel: +34 93 586 82 32 Fax: +34 93 581 41 10 http://www.pic.es Avis - Aviso - Legal Notice: http://www.ifae.es/legal.html
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