What is causing error 50193 for RLGO with GPU utilization activated?

Hi Luke,

As the error message says, curvi-linear mesh with GPU is not supported. Curvi-linear mesh is default in RL-GO, but you can also disable it and use flat triangles. Please note that in most cases multi-core is faster than GPU. You can give it a try.

Best regards,
Torben

Hi Luke,

As the error message says, curvi-linear mesh with GPU is not supported. Curvi-linear mesh is default in RL-GO, but you can also disable it and use flat triangles. Please note that in most cases multi-core is faster than GPU. You can give it a try.

Best regards,
Torben

Hi Torben, thanks for your reply.  The same error message appears when curvi-linear meshing is disabled.  However, if you suggest multi-core CPU processing is still faster than GPU usage I would be interested.  Do you happen to know for what cases is GPU faster than multi-core?  If any? 

Thanks for your help,

Luke

Hi Torben, thanks for your reply.  The same error message appears when curvi-linear meshing is disabled.  However, if you suggest multi-core CPU processing is still faster than GPU usage I would be interested.  Do you happen to know for what cases is GPU faster than multi-core?  If any? 

 

Thanks for your help,

Luke

Hi Lukas,

Please attach your model (.cfx) so I can check why trhe error message still comes up with flat triangles.

GPU acceleration is ideal for models using the FDTD solver. Here I would say that GPU in general clearly dominates multi-core.

Best regards,
Torben

Hi Lukas,

Please attach your model (.cfx) so I can check why trhe error message still comes up with flat triangles.

GPU acceleration is ideal for models using the FDTD solver. Here I would say that GPU in general clearly dominates multi-core.

Best regards,
Torben

Hi Torben, 

Apologies for the delay.  With the triangular mesh (not curvi-linear) I still get the error. I attached a .cfm feko file in the original post.  Are you able to access that?  I'm curious if it generates the error on your end.

I don't have immediate access to that computer to copy and send the .cfx file today, but can do so tomorrow.  Just let me know if the .cfm does not work for you.

Thanks again for your help,

Luke

Hi Torben, 

Apologies for the delay.  With the triangular mesh (not curvi-linear) I still get the error. I attached a .cfm feko file in the original post.  Are you able to access that?  I'm curious if it generates the error on your end.

I don't have immediate access to that computer to copy and send the .cfx file today, but can do so tomorrow.  Just let me know if the .cfm does not work for you.

 

Thanks again for your help,

Luke

Hi Luke,

Unfortunately, the .cfm file (CADFEKO session) requires the .cfx file (CADFEKO model).

Best regards,
Torben

Hi Luke,

Unfortunately, the .cfm file (CADFEKO session) requires the .cfx file (CADFEKO model).

Best regards,
Torben

Hi Torben,

Gotcha, attached is the .cfx file.  Thanks for your help.  Please let me know if you get an error when using a GPU to solve. 

Thanks,

Luke

Hi Luke,

I didn't realize it because I only use GPU acceleration extremely rarely (parallel computing is typically faster, except for FDTD), but even the "Adaptive" setting is not supported with GPU:

This is actually a very useful feature, which automatically determines where many ray tubes need to be shot and where not. With GPU you are unfortunately forced to use "Fixed grid increments", where you may have to successively reduce the increment to make sure it is fine enough.

The attached model works with GPU, but I think it might be faster even with only 4 parallel processes.

Best regards,
Torben