topic Re: Stress Analysis with multicore CPUs in Inventor Forum

Stress Analysis with multicore CPUs

Anonymous — Tue, 29 May 2018 23:02:11 GMT

Hi. I couldn't find the answer anywhere. Does the process wizstress.exe (Static analysis solver) use "multi cores" of the processor. So, I mean will I feel a difference if I switch from i8700K (4.7Ghz) to Threadripper 1950x (3.4Ghz) with 16 cores?

Re: Stress Analysis with multicore CPUs

johnsonshiue — Tue, 29 May 2018 23:41:12 GMT

Hi! Here is a list of processes supporting multi-threading and multi-core operations. Yes, the stress analysis is one of them. In theory, more cores may lead to faster operations. But, the entire process time is not just spent on CPU. It can be influenced by memory and disc speed. You can try it and see if it makes a difference.

https://knowledge.autodesk.com/support/inventor-products/troubleshooting/caas/sfdcarticles/sfdcarticles/Support-for-multi-core-processors.html

Many thanks!

Re: Stress Analysis with multicore CPUs

01159515 — Mon, 17 Apr 2023 15:25:51 GMT

Hi! I am using 16 core amd ryzen 9 7950x. I do a lot of complex stress analysis but most of the time inventor uses only 20 to 30% of my processor. Is there a way to change that? Am I doing something wrong?

Re: Stress Analysis with multicore CPUs

johnsonshiue — Tue, 18 Apr 2023 00:27:07 GMT

Hi! Inventor isn't fully multi-cored/multi-thread. But Stress Analysis (and some operations) should be multi-cored/multi-threaded.

https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Support-for-multi-core-processors.html

But, I don't think any of the operations would use 100% of the CPU cores. Certain operations are not multi-threaded and cannot be made multi-threaded, because of the serial nature of the compute.

I would make sure I have adequate system RAM (at least 32 GB). Otherwise, any modern CPU should work just fine. If you are seeing a particular performance issue, please share an example here. I would like to understand the issue better.

Many thanks!

Re: Stress Analysis with multicore CPUs

01159515 — Fri, 21 Apr 2023 21:11:51 GMT

It looks like Inventor is using only 8 of my 32 threads for fea. I was just wondering if there is a way to change that and speed up analysis

Re: Stress Analysis with multicore CPUs

johnsonshiue — Fri, 21 Apr 2023 23:56:48 GMT

Hi! I suggest you look into Fusion Simulation, which performs the compute in the cloud. And, you can still work on design in your desktop.

Many thanks!

Re: Stress Analysis with multicore CPUs

damian.lewczyk — Wed, 13 Mar 2024 13:10:06 GMT

I am refreshing this subject under this post. Please vote for this:
https://forums.autodesk.com/t5/inventor-ideas/please-allow-us-to-use-multiple-core-processor-for-stress/idi-p/12637730