[Gate-users] GPU simulation exception

[Lo, Nathan]

Hello Jiri,

I had the same error and fixed it by adding the following after “CUDA_NVCC_FLAGS” on line 192 of CMakeLists.txt: -gencode arch=compute_XX, code=sm_XX, where XX is the compute capability of your graphics card. A lot of the newer Nvidia graphics cards have a compute capability of 5.2 which isn’t listed in that file by default (in that case you would replace XX with 52).

Also I have found that when configuring the installation using CMake, the option “CUDA_SDK_ROOT_DIR” is left blank by default. Make sure it is linked to your CUDA install. The path should match the option for “CUDA_TOOLKIT_ROOT_DIR”.

After making the above changes, recompile Gate and try your simulation again.

I hope this helps you fix your problem,

Nathan Lo


From: gate-users-bounces at lists.opengatecollaboration.org [mailto:gate-users-bounces at lists.opengatecollaboration.org] On Behalf Of Zakarumit.Z at seznam.cz
Sent: Wednesday, June 22, 2016 3:08 AM
To: gate-users at lists.opengatecollaboration.org
Subject: [Gate-users] GPU simulation exception


Hello,

I have created a simple PET geometry with voxel phantom that already works when run on CPU. Hovewer, I would like to try GPU acceleration as well, but when I modify the code and run it, I receive following error:



 :: Stacks init
 :: Materials init
 :: Phantom init
 :: Activities init
 :: Start GPU
 ::   Rnd ok
 ::   Generation ok
WARNING - GPU reachs max step
 ::   Tracking ok
 :: Stop GPU (time 1.734591e-01 s)

-------- EEEE ------- G4Exception-START -------- EEEE -------
*** G4Exception : GeomNav0003
      issued by : G4PhantomParameterisation::GetReplicaNo()
Point outside voxels!
        localPoint - (-nan,-nan,-nan) - is outside container solid: pacient_solid

*** Fatal Error In Argument *** core dump ***
-------- EEEE -------- G4Exception-END --------- EEEE -------


*** G4Exception: Aborting execution ***



I thought it might be just me making a mistake somewhere but I receive exactly the same error when launching GPU PET macro from the example folder. I am grateful for any advice regarding the matter and what might be causing it. Using GATE 7.2.

Best regards,



Jiri Ters

Czech Technical University in Prague

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