Creo simulate - memory allocation

Forum|Forum|11 months ago
May 9, 2025
2 replies
1630 views

I want to understand the need for the memory allocation limits of 16 Gb for 64 bit machines?? i understand the need of having enough memory for the operating system, but now that machines with 32, 64 and even 128 Gb are comun.
I am asking this because i have a model that the global matrix profile is around 100 Gb on the last pass of the MPA analysis and I am working on a machine with 128Gb of RAM

Simulate

Best answer by MartinHanak

Hi,

please discuss the problem with PTC Support.

I think PTC Support will tell you that Creo Simulate (Mechanica) has this limit hardcoded.

I hope you know that Creo Simulate sale has ended. Therefore the developm,ent of this software was ended.

V

VladimirN

24-Ruby III

Articles:

"Limit of memory allocation solver setting in Creo Simulate": https://www.ptc.com/en/support/article/CS51761
"Creo Simulate warning information "The maximum memory allocation (solram) is 16384 MB." while setting the solver memory allocation in Run Settings dialog box to 32768 MB as the 0.25 times of the physical memory 128 GB": https://www.ptc.com/en/support/article/CS340733

S

SB_12702131

Author

1-Visitor

the first article recommends between 25 to 50% of the physical RAM but the limitation of 16384MB imposes a max of 12.5% of the physical RAM to be alocated.

Is there any prediction for the new releases?

M

MartinHanak

Answer

24-Ruby III

Hi,

please discuss the problem with PTC Support.

I think PTC Support will tell you that Creo Simulate (Mechanica) has this limit hardcoded.

I hope you know that Creo Simulate sale has ended. Therefore the developm,ent of this software was ended.

C

Chris3

21-Topaz I

@MartinHanak wrote:

Therefore the development of this software was ended.

Just to expand on this a little bit, what PTC said at the last conference was that they have no plans to sunset the Creo Simulate software. It will continue to be included in future releases of Creo. They did enhance Simulate recently to support composite designs. That being said though, PTC is not actively working on making the Creo Simulate product better. They have partnered with Ansys and are going to sell integrated FEA solutions from Ansys through the Creo product (think Simulate Live and Ansys Simulation modules). As Ansys rolls out new features, they will incorporate that new development into those Ansys modules.