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NX Nastran V8.5 - Memory Request Error

Hello, 

when using NX-Nastran V8.5 within Solid Edge ST6, I get the below memory error message in the protocol.

My laptop has Windows Home Premium 7 SP1 64-Bit and 4 GB RAM. Solid Edge version is SolidEdgeV106GERMAN_32Bit.

What can I do to get the solver running successfully?

 

Unable to allocate /OPENZZ/ Open Core.

  Requested size = 1153433624 bytes (44c00018 hex), errno = 22.

 18:24:42  MAINAL: 0*** MEMORY REQUEST OF    288358400 WORDS FAILED *** HOST OS ERROR =          1

 18:24:42  MAINAL: 0*** REQUESTING LESS MEMORY MAY SUCCEED. CONTACT NXN CLIENT SUPPORT FOR ADDITIONAL HELP. ***

 18:24:42  MAINAL: *** PROCESSING TERMINATED ***

 

Best regards

Juergen

3 REPLIES
Solution
Solution
Accepted by topic author Jupiter
‎08-26-2015 04:32 AM

Re: NX Nastran V8.5 - Memory Request Error

Dear Juergen.

NX NASTRAN is trying to allocate 1 GB RAM to solve the model, but failed because not available free RAM memory exist in your computer. For FEM/FEA the amount of memory is critical, never is enought!!.

 

Try to prescribe a smaller amount of memory using the "memory" nastran keyword, for instance try the value mem=0.75gb and see what happens. If the error appear use mem=0.5gb, and so on.

 

 

Ther amount of RAM memory depends of the model size (number of nodes, ie, number of DOF), try a smaller model size to see if problem solves (increase the element size) -- good luck!.

 

Best regards,

Blas.

Blas Molero Hidalgo, Ingeniero Industrial, Director
IBERISA • 48004 BILBAO (SPAIN)
WEB: http://www.iberisa.com
Blog Femap-NX Nastran: http://iberisa.wordpress.com/

Re: NX Nastran V8.5 - Memory Request Error

Hey Juergen

 

to make a certain assumption on memory required for your run use f04 file. 

 

Find ***** User Information Message 4157

 

you can see Minimum required memory, Memory available, and another very important one - Memory required to avoid spill.

 

So you can use mem (as well as smem) to define available memory. Note. f04 file has memory messages with figures mesured in Words (so you should convert to Mb if needed)

 

See user manuals for more details.

 

 

Regards

Pavel

Re: NX Nastran V8.5 - Memory Request Error

Dear Blas,

it works fine now with mem=0.75GB. Thanks a lot for your help.

 

Dear Pavel,

also thank you for the hint with the f04 file.

 

Best regads

Juergen