Using GPU in FLUENT

- September 14, 2017 at 6:50 pm
  
  Jamasp
  Subscriber
  
  I'm trying to use GPU for CFD simulation in FLUENT, but I'm not sure GPU is using for computation. This is what I found in Console:
  
  "Inhomogeneous process distribution on multiple machines. Or processes per machine not an exact multiple of GPGPU's per machine. Or not enough GPGPU's per machine. GPGPU computing disabled."
  
  Does this mean GPU is not available for simulation?
  
  The graphic card I'm using is GeForce GT 640. I used parallel/gpgpu/show in console. Here's what I got.
  
  CUDA runtime version 0
  
  Driver version 5000
  
  Number of GPUs 0
  
  Is there anything I should install to be able to use GPU?
  
  Thank you,
  
  Jimmy Azarnoosh
- September 14, 2017 at 9:22 pm
  
  pgl
  Ansys Employee
  
  Hi Jimmy,
  
  The ANSYS Fluent GPU capability was designed to work with the high memory GP-GPU's like the NVIDIA Tesla K40 or NVIDIA Quadro K6000 with 12 GByte memory, or the newer Quadro GPU's with even more horsepower and memory. NVIDIA has published an application note here. I am not certain how well a GeForce family GPU will perform. However here's an excellent video showing initial set up and how to verifying that the GPU is present and activated.
  
  https://youtu.be/9YH9p2KbRls
  
  I hope this helps you out. Good luck.
- September 15, 2017 at 12:57 am
  
  Jamasp
  Subscriber
  
  Than you so much.
- January 17, 2019 at 1:45 am
  
  Donghyun Yim
  Subscriber
  
  HI.
  
  As your clip, I turned on gpgpu usage on temperature with "solve/set/amg-options/amg-gpgpu-options/temperature" command.
  
  But the fluent solver shut down before calculation with this setting. (It worked well before using gpgpu)
  
  Your video clip shows further setting in the case of radiation, but my model utilizes user-defined-scalar and temperature calculation.
  
  Do I need more setting to use gpupu well?
  
  Thanks.
- January 17, 2019 at 11:12 am
  
  Rob
  Forum Moderator
  
  I would check if your gpu is supported, and unless it is don't use gpu acceleration. Look in here for gpu details https://www.ansys.com/solutions/solutions-by-role/it-professionals/platform-support
- January 24, 2019 at 7:28 pm
  
  Jamasp
  Subscriber
  
  Thank you for your comment. It seems that the GPU that I have is not supported by ANSYS. I couldn't find it in the list. The GPU on my PC is GeForce GT 640.
  
  Please let me know if this GPU is supported by any chance.
  
  Thanks,
  
  Jimmy
- January 24, 2019 at 7:52 pm
  
  DrAmine
  Ansys Employee
  
  Already highlighted by my colleague for the list if supported GPGPU https://www.ansys.com/solutions/solutions-by-role/it-professionals/platform-support