Learning Forum

[dlago]

Hello, 

we have been testing the software for a while, using an Nvidea Quadro P5000 graphic card with 16gb of dedicated video memory, and in every case (simulation) even at the maximum fidelity settings, we have noticed that the GPU´s usage never goes above 8gb of memory. 

Is this a known issue? Is there any way to use the remaining graphic capacities to increase the mesh resolution or the overall speed of the analysis? 

Thanks in advance

[Gaurav Sharma]

Hi Dlago

Discovery Live doesn't use the available memory to the maximum as the solver always keep some memory in buffer for:

1. Other PC operations
2. Any other additional demand in memory you may need further in your simulation. This additional demand may be because of changes in geometry, adding new analysis type, putting all result displays to ON, increasing fidelity (if not on max fidelity already) etc.

Hence, in order to be conservative so as not to run out of memory on the GPU and avoid any crash, it is important to have the buffer. 

Thanks & Regards,

Gaurav

[dlago]

Hi Gaurav, 

thank you for your quick answer.

We fully understand the importance of having enough memory in the buffer for assuming the remaining operations of the system, as well as additional loads in the software, like you well explained above.

In fact, even when we have everything loaded on the software, the fidelity of the analysis is established to the maximum, and we are running other softwares at the same time, the use is limited to 8 GB.

So, we want to know if there is anything we can do to actually use part of the remaining memory. Let's say increase it to 12gb.

 

Thanks in advance

[Gaurav Sharma]

Dlago 

The best that can be done after defining the problem is to go for max fidelity (which you are already doing). If you are looking for a setting/option, that can help you force the solver to use the remaining memory, I am afraid that doesnt seem possible.

I understand that with the available memory, there can be an urge to use a better resolution and increase the efficiency further. But unfortunately as I said earlier, the trade off is to ensure "No Crash" and remain conservative. 

Regards,

Gaurav

[dlago]

Gaurav_ANSYS

Thank you for your answer,

so in that case it means that the software assumes, lets say 50% of your memory, no matter what graphic card you are using? 

 

best regards,

Daniel

[Gaurav Sharma]

Dlago 

It might not be right to specify a number but definitely solver keeps a good chunk from memory as buffer, irrespective of the GPU capability.

Regards,

Gaurav