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Does The Tavares UFRJ Breakage Model have special settings requirements for CUDA solvers?

Dear All,

I am trying to use EDEM's Tavares UFRJ Breakage Model to simulate the fracturing behaviour of particles (3-6 microns in diameter) under compression (subjected to pressures of about 30-300 MPa). When I try to use the GPU for CUDA solving, the particles fail to break up no matter how much I adjust the simulation step size and stress loading rate. However, when I try to switch to the CPU solver with the same parameter settings, the particles can experience the breakup behaviour as expected.

I am very confused about this, and I am wondering if I need to make some special configurations for the CUDA solver when using the Breakage Model. Where should I consider adjusting my model to troubleshoot the problem?

Some model-related configuration:
contact model: EEPA
contact radius: 1.5x
time step: 3e-11s
computing platform: NVIDIA RTX-4070

Thanks,
Jiashen Chen

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v2024

Accepted answers

Stephen Cole

Hi Jiashen ,

Just in addition to Jerrins comment are you using Windows or Linux? There was an issue with EDEM 2024.0 on Linux where the particles were not breaking on GPU. This is resolved in EDEM 2024.1 which was released last week.

Regards

Stephen

All comments

jerrinjobs

Hi Jiashen

In the Simulator, within the 'Simulator Engine' settings, click on 'Advanced Settings', and make sure your solver precision is set to 'Double'. CPU always runs on double precision, so maybe this is because of a precision issue. This would be worth a try.

Hope this helps.

Thanks,
Jerrin Job

Stephen Cole

Hi Jiashen ,

Regards

Stephen

Jiashen_Chen

Hi Jiashen

In the Simulator, within the 'Simulator Engine' settings, click on 'Advanced Settings', and make sure your solver precision is set to 'Double'. CPU always runs on double precision, so maybe this is because of a precision issue. This would be worth a try.

Hope this helps.

Thanks,
Jerrin Job

Hi Jerrin,

Thank you for your reply.

I checked my settings, and it is currently working as Double Precision. So I think the problem may not be here.

Thanks,
jiashen Chen

Jiashen_Chen

Hi Jiashen ,

Just in addition to Jerrins comment are you using Windows or Linux? There was an issue with EDEM 2024.0 on Linux where the particles were not breaking on GPU. This is resolved in EDEM 2024.1 which was released last week.

Regards

Stephen

Hi Stephen,

Thank you for your reply.

I am running EDEM2024 with Windows. Is it possible that an EDEM upgrade version for Windows could solve this problem?

Thanks,
jiashen Chen

Jiashen_Chen

Hi Stephen,

Thank you for your help.

This problem was resolved when I updated to version 2024.1. Therefore, it has now been confirmed that the particles in EDEM2024 on Windows cannot be broken on GPU either.

Hope this helps more people.

Thanks,
jiashen Chen