Re: [Freesurfer] using multiple cores

2014-05-05 Thread Z K
Lukas, The Mac build does not support openmp. This is because the initial version of gcc we were using for the Mac build did not support it. We are now using a version of gcc for the Mac build which does support oppenmp so the current plan is that any subsequent releases of freesurfer will

Re: [Freesurfer] using multiple cores

2014-05-05 Thread Lukas . Scheef
Hi Zeke!Thanks a lot for the response. Better a late response than none :o)! Do you have any vague estimate when a new release will be available? So far I did not try to compile it from the sources, because it is not my daily business and for an inexperienced it most likely ends up with pure

Re: [Freesurfer] using multiple cores

2014-05-05 Thread Z K
I do not have any information to give in regards to when a new release would be available. Compiling freesurfer from source is not exactly something I would call fun. That said, I have been working on a brief how-to-guide on how to build freesurfer on Mac OSX and I have already packaged the

Re: [Freesurfer] using multiple cores

2014-05-05 Thread Bruce Fischl
And fun, right? On May 5, 2014, at 5:48 PM, Z K zkauf...@nmr.mgh.harvard.edu wrote: I do not have any information to give in regards to when a new release would be available. Compiling freesurfer from source is not exactly something I would call fun. That said, I have been working on a

Re: [Freesurfer] using multiple cores

2014-05-04 Thread Lukas . Scheef
Hi Bruce and others!I am still puzzeling how to speed up the process... I tried 4 prarallel sessions running exactly the same dataset as before. With 4 cores and 32 GB RAM I expected that I won't loose time / session. However, it was about 50% slower. Shell 1:recon-all -s ernie1 -i

Re: [Freesurfer] using multiple cores

2014-05-02 Thread Lukas . Scheef
Hi Bruce! Thanks for the fast response. I used the current stable version 5.3.0.1 (freesurfer-Darwin-lion-stable-pub-v5.3.0.1). So I will try as you have suggested ... Best wishes, Lukas Bruce Fischl Fri, 02 May 2014 05:47:26 -0700 Hi Luke what version of FS are you running? We see

Re: [Freesurfer] using multiple cores

2014-05-02 Thread Lukas . Scheef
Hi Bruce!I just run: recon-all -s ernie2 -autorecon2 -openmp 4 mri_ca_register uses 100.9% CPU at most ... Any idea? Should I try to recompile FS for the current MacOS release? If so, do I have to take care on special librariwa in order to enable the openmp option? Best wishes,LukasHi Bruce!

Re: [Freesurfer] using multiple cores

2014-05-02 Thread Bruce Fischl
Hi Lukas sorry, I'm out of my depth on the mac. Perhaps Zeke knows what's going on? Does OpenMP have to be enabled somehow? Bruce On Fri, 2 May 2014, lukas.sch...@ukb.uni-bonn.de wrote: Hi Bruce! I just run: recon-all -s ernie2  -autorecon2 -openmp 4 mri_ca_register  uses 100.9% CPU

Re: [Freesurfer] using multiple cores

2014-05-02 Thread Matt Glasser
If you are compiling with clang openmp might not work. Peace, Matt. On 5/2/14, 2:13 PM, Bruce Fischl fis...@nmr.mgh.harvard.edu wrote: Hi Lukas sorry, I'm out of my depth on the mac. Perhaps Zeke knows what's going on? Does OpenMP have to be enabled somehow? Bruce On Fri, 2 May 2014,