[Gate-users] Problem with GPU PET example

[Mirco Heß]

Hi all,

I am trying to run the GPU PET example but am facing some problems. When
looking at the output, it seems like the XYZ positions of the source are
accumulated on the faces of the provided phantom/source volume, i.e. the
bounding box of the 3D image. This is only true for the GPU-based
simulation. When running the CPU-based simulation everythig seems to be
fine. I have attached two screenshots to visualize the problem and the
difference between the two cases. The problem is present in both the ASCII
and ROOT output.

I already had this problem about two years ago with Gate 7.0 and was not
able to resolve it.
Now I am running Gate 7.2 with GPU support activated, on Ubuntu 14.04
with updated NVIDIA and CUDA drivers.


Has anybody been able to successfully run this example?
 (gate_v7.2/examples/gpumacros/pet/main-gpu.mac)

Any advice and pointers to resolve this issue would be highly appreciated.
Thanks a lot in advance!


Cheers,
Mirco


-- 
*Mirco Heß*
PhD Candidate
European Institute for Molecular Imaging (EIMI)

[image: _European Institute for Molecular Imaging - EIMI_]
European Institute for Molecular Imaging - EIMI
Waldeyerstr. 15
48149 Münster
http://www.uni-muenster.de/eimi

+49 (0)251 83 - 49318
+49 (0)251 83 - 49313 (Fax)
eMail: mirco.hess at uni-muenster.de
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