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Inventor Professional 2018 memory leak? High RAM usage during single part FEA

Anonymous

Inventor Professional 2018 memory leak? High RAM usage during single part FEA

Anonymous
Not applicable

This is my first post here, so apologies if I've put this in the wrong place, etc.

 

Problem

As the title suggests, I'm running FEA on a single part in Inventor 2018, and coming up against some crazy RAM usage.

I have 16GB, and the FEAComputeServer process has been using up to almost all of that.

When running a parametric study, I've seen the DynamicAnalysisSolver process use up to 4.5GB, but this fluctuates between reasonable values; the FEAComputeServer on the other hand seems to use memory in a cumulative way and only ever increases. Moreover, the memory isn't released after the study has ended, and I have to end the process manually to free it.

 

This behaviour doesn't seem right to me - especially as in the worst case it has caused other open programs to crash, and even caused my PC to crash completely.

 

PC Spec

i7 4790K

16GB

GTX970

Inventor installed on a Samsung Evo SSD

Windows 10

Inventor version: Inventor Professional 2018 64 bit, Build 112, Release 16/02/2017 

 

Attempts To Solve

The obvious first attempt was to reboot and run with nothing else open. Still get the high usage, but this time, instead of crashing at ~13GB, it crashes at 14.5GB or so.

 

I saw on another thread that using local files (i.e. not saving the project/part files on a network) may help, so I made a new test project on the SSD where Inventor is installed, and had the same issue.

 

A different thread suggested decreasing mesh size (increasing mesh density) - I didn't get the reasoning behind this, but I have tested different average mesh element sizes from 0.05 down to 0.002 and the problem persists.

 

 

 

Any insight here would be very useful, as I'm struggling to get any accurate results (high mesh density, lots of parameter values, etc) without Inventor crashing on me.

 

Thanks in advance,

C

 

 

 

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MSD_takaseh
Alumni
Alumni

Hello ch14415,

 

I think the issue you are facing is data specific but please try followings at first.

1. If the user doesn't yet apply the latest service pack/update then please apply.

2. Remove a content of %temp% folder. (There might be unremoved file in there)

3. Reset Inventor setting with the reset utility from here.

 

Thanks.



Hitoshi Takase
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johnsonshiue
Community Manager
Community Manager

Hi! I suggest you do the following two things.

 

1) Install 2018.2 Update and 2018.2.3 Update.

2) There is indeed a change in the way Inventor FEA generates mesh. The object was to boost mesh quality. However, it could increase the number of mesh element significantly. Try adding this key in registry.

 

[HKEY_LOCAL_MACHINE\SOFTWARE\Autodesk\Simulation\RegistryFEACS]
"MaxJacobianRatio"=dword:000003e8  in Hexadecimal or 1000 in decimal

 

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
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Anonymous
Not applicable

Hi - thanks for the response.

 

I'm currently installing the updates, but looking in regedit, I can't find a "Simulation" folder under Autodesk.

Here's a screenshot:

image.png

 

Sorry if I'm missing something!

 

Thanks again,

C

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johnsonshiue
Community Manager
Community Manager

Hi! If it is not there, you can create one manually.

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
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Anonymous
Not applicable

Ive had this once and it almost killed my PC as well.
you can disable it by the following process which worked for me hope it works for you!

Fixing your PC for slow down issues due to ‘Real-Time Protection’ feature
Go to your computers ‘Settings’ and then to ‘Update and Security’
Turn off the ‘Real-Time Protection’ feature
Turn off the ‘Cloud based Protection’ feature
Once you have done the above changes, reboot your computer and check the Task Manager for the Antimalware Service Executable process or the msmpeng.exe file. See the CPU and memory occupancy and if you see that now the Antimalware Service Executable high ram is not occupying so much of the CPU hard disk or the memory, then your problem stands fixed.

Also you can check out this blog which I read if this step does not work out you.

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