Hi Chris,

If you could get support for CUDA 5.5 it would be marvelous. I'm quite inexperienced with the CUDA programming (consider me an enduser), you would have my full support.

I also have a computer here to do any testing if needed. I have a PC with CentOS 6.5, Freesurfer 5.3.0, i7 4770k, 16 Gb RAM, GTX 780.. etc.

On that note I have been trying to replicate the methods and the scheduler introduced in "Improving the Execution Performance of Freesurfer" by Delgado et al. . Let me know if you need any help or would like to collaborate.

-Bryan

Date: Wed, 2 Jul 2014 03:46:01 +0000 From: Chris Adamson chris.adamson@mcri.edu.au Subject: Re: [Freesurfer] Build with CUDA 5.5? To: Z K zkaufman@nmr.mgh.harvard.edu, Freesurfer support list freesurfer@nmr.mgh.harvard.edu Message-ID: 43A4603348D2AC409B1B958EFE5C8B940118273C23@MITSMXMBX02V.mcri.edu.au Content-Type: text/plain; charset="us-ascii"

I understand about matching all the different combination of driver versions with linux distros. My plan is to use a centos 6.5 distro and just install the CUDA 5.5 library. I will try and replicate what there is already with CUDA 5.0 with the new library.

I will let you know how it goes.

I understand about not having resources to devote to a programming task. The CUDA versions are still definitely worth since they are faster than the CPU versions even after openmp and they don't force you to hog all the CPU cores.

-----Original Message----- From: Z K [mailto:zkaufman@nmr.mgh.harvard.edu] Sent: Wednesday, 2 July 2014 1:41 AM To: Freesurfer support list; Chris Adamson Subject: Re: [Freesurfer] Build with CUDA 5.5?

Chris,

This is why we no longer actively support CUDA development in freesurfer and instead have focused on openmp to reduce overall runtime. The complexity of the CUDA programming coupled with the required libraries/driver matching of various builds with various OSes is simply beyond the resources we have to devote to the task. As you know, we currently build against CUDA 5.0, and if your OS supports it, you can run the more computationally intensive tasks (mri_ca_register, etc) using CUDA.

Beyond that you are free to attempt a build of the freesurfer source code against the CUDA 5.5 on your Ubuntu system. I can assist with that task by providing the other 3rd party libraries as well as general insight, but beyond that we simply do not have the resources to devout to that task.

-Zeke

On 06/30/2014 10:19 PM, Chris Adamson wrote:

Guys,

Would it be possible to get Freesurfer 5.3.0 built with CUDA 5.5? The newest Ubuntu does not have support for 5.0.

Thanks in advance,

Chris Adamson.

*Dr **Chris Adamson *Research Officer, Developmental Imaging, *Murdoch Childrens Research Institute *Murdoch Childrens Research Institute Royal Children's Hospital Flemington Road, Parkville, Victoria 3052, Australia www.mcri.edu.auhttp://www.mcri.edu.au http://www.mcri.edu.au/

E chris.adamson@mcri.edu.au T 03 9936 6780

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