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CFX 5.6 memory problem with solver

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Old   January 29, 2004, 07:23
Default CFX 5.6 memory problem with solver
  #1
sreevisakh
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I was analysing a problem contains poros medium with total domain length of 3.45 meters. i came across this error. i request your suggestions to get over this problem

| | *** INSUFFICIENT MEMORY ALLOCATED *** | | | | Action required : Increase the integer stack memory size. | | | | If the situation persists please contact the CFX Customer Helpline | | giving the following details:- | | | | Requested space: 4521354 words | | | | Current allocated space: 6578507 words | | Current used space: 5203829 words | | Current free space: 1374678 words | | Number of free areas: 1 | | | +--------------------------------------------------------------------+

Details of error:- ---------------- Error detected by routine MAKDAT CDANAM = LCON CDTYPE = INTR ISIZE = 4521354 CRESLT = FULL

+--------------------------------------------------------------------+ | Writing crash recovery file | +--------------------------------------------------------------------+

Details of error:- ---------------- Error detected by routine POPDIR CRESLT = ILEG

+--------------------------------------------------------------------+ | An error has occurred in cfx5solve: | | | | The CFX-5 solver exited with return code 1. No results file has | | been created. | +--------------------------------------------------------------------+

End of solution stage.

################################################

The memory allocated is as follows:-

+--------------------------------------------------------------------+ | Memory Allocated for Run (Actual usage may be less) | +--------------------------------------------------------------------+

Data Type Kwords Words/Node Words/Elem Kbytes Bytes/Node

Real 17602.0 616.77 146.26 68757.7 2467.08 Integer 6578.5 230.51 54.66 25697.3 922.04 Character 1473.0 51.61 12.24 1438.5 51.61 Logical 48.0 1.68 0.40 187.5 6.73 Double 515.6 18.07 4.28 4028.1 144.53

################################################## ##

I tried to increare the integer stack memory upto 1.9x randomly starting from 1.2x. my system configaration is p 4, 1.8 GHz, 526 Mb RAM

plz send ur suggestions.
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Old   January 29, 2004, 11:55
Default a problem on convergence in stage interface
  #2
feng
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Hello,I meet a convergence problem in rotor-stator- interaction calculation,the interface is stage model,i can not get a convergent result.but i have used frozen rotor model to calculate,i can get a good result whose maximum residuals are less than 1e-5(the chosen turbulent model is k-w ,SST model). who has some ideas to solve my problem?

thank you

feng
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Old   February 1, 2004, 17:51
Default Re: CFX 5.6 memory problem with solver
  #3
Glenn Horrocks
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Hi Sreevisakh,

Why not just increasing the integer memory until it works? Why did you stop at 1.9x? Hopefully it will work before you run out of memory.

Glenn
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Old   February 2, 2004, 05:57
Default Re: CFX 5.6 memory problem with solver
  #4
sreevisakh
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Hi Glenn, Thanxz to u to pay attension for my problem and ur suggestions. I re-wrote the PRE to another fashion in designing the total domains by splitting it into 7. Previously it was a single domain which I made by the union of different meshes. now i separately defined it. now it is working properly at 1.2x. Once again thankz to u. Sreevisakh
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