Using GPU in Polyflow

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  • Last Post 11 October 2019
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Beb99 posted this 17 September 2019

Hey,

I'm trying to use GPU for running my simulations faster in Polyflow, I know it's possible in Fluent. Can anyone help me regarding this???

I'm using NVIDIA Geforce RTX 2060 32 GB GPU but it's not being utilised at all.

Thank you

 

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bducoeur posted this 24 September 2019

Hi,

Within workbench, if you right click on solution/preference/Polyflow, you have the possibility to activate the GPU and number of GPU.  This will consume a HPC license.  

List of tested GPU can be found here : https://www.ansys.com/-/media/ansys/corporate/files/pdf/solutions/it-professionals/platform-support/gpu-accelerator-capabilities-2019-r3.pdf?la=en-in&hash=727195261843C178B31BBC1EAE63885E0A2ED18A

Best Regards,

Benjamin

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Beb99 posted this 26 September 2019

Thank you for the reply.

I tried what you mentioned but it did'nt even start. It gives me a message saying, "A valid license could not be checkedout". I'm using only one workbench and I'm using licensed version of ANSYS v16.1. Do I need to alter some settings in server utility too before using the workbench?

bducoeur posted this 30 September 2019

Hi,

I double checked and here is the current situation:

The GPU capability within Polyflow is actually only possible for commercial licenses.  Not academic licenses.

With some academic license, you can use GPU with Fluent and Mechanical.

You can find more information here : https://www.ansys.com/academic/educator-tools/high-performance-computing

Best Regards,

Benjamin

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Beb99 posted this 01 October 2019

Thank you for the info.

Beb99 posted this 09 October 2019

Is there any other to optimize or tweak the speed of polyflow like parallel computing in fluent. 

bducoeur posted this 10 October 2019

Fluent and Polyflow use different computational method. Precisely the finite volume method and the finite element method respectively, for a given mesh FEM will converge solver than FVM.  Alternatively, you can get the same results accuracy with less element in FEM that with FVM.

So to speed up:

- You can use more CPU but the speed up is less visible above 4 CPU

-You can review the geometry and the mesh to have less elements.   Make sure to have at least 3 elements in gaps.

-If possible, perform a non-newtownian simulation instead of a viscoelastic simulation.  You can already get useful result and much faster.

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Beb99 posted this 11 October 2019

Thank you for the reply, I'll do modifications as you've suggested.
Also, I want to ask if it's possible to simulate a cutting operation in polyflow, like if the extrude formed after extrusion is cut into a fluid of lower temperature.

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