Learning Forum

[marcellszeles]

Hello,

 

I have a complex model in AIM looking to be solved, and I'm having issues with the out-of-core performance.

 

Can you kindly let me know which command (and which part to enter it) is used to run the "Distributed Sparse Matrix Solver" in "in-core" mode?

 

Errors:

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/COM,ANSYS RELEASE 2019 R2           BUILD 19.4      UP20190416       18:16:19

 *** WARNING ***                         CP =       0.422   TIME= 18:16:20
 BCSOPTIO is not a recognized BEGIN command, abbreviation, or macro.     
 This command will be ignored.                                           

 *** WARNING ***                         CP =      37.328   TIME= 18:16:34
 The program chosen initial timestep/load-factor is arbitrary.  It is    
 necessary for the user to supply a suitable initial                     
 timestep/load-factor through the NSUB or DELTIM command for             
 convergence and overall efficiency.                                     

 *** WARNING ***                         CP =     154.500   TIME= 18:17:26
 Component C1 does not exist.  The OUTRES command is ignored.            
/COM,ANSYS RELEASE 2019 R2           BUILD 19.4      UP20190416       18:18:02

 *** WARNING ***                         CP =       0.406   TIME= 18:18:04
 BCSOPTIO is not a recognized BEGIN command, abbreviation, or macro.     
 This command will be ignored.                                           

 *** WARNING ***                         CP =      36.375   TIME= 18:18:16
 Element shape checking is currently inactive.  Issue SHPP,ON or         
 SHPP,WARN to reactivate, if desired.                                    

 *** WARNING ***                         CP =     264.672   TIME= 18:22:07
 The Distributed Sparse Matrix Solver is currently running in the        
 out-of-core memory mode.  This memory mode may provide significantly    
 worse performance compared to the in-core memory mode, depending on     
 the amount of available system memory and I/O speed.  Please monitor    
 the solver performance to ensure that the large amount of I/O to the    
 solver files does not create a bottleneck for performance.              

 *** ERROR ***                           CP =     333.172   TIME= 18:23:17
 An input/output error has occurred while trying to open a file with     
 length = 33 GB.  Error code = 112, which translates to: There is not    
 enough space on the disk.                                               
                                                                         

 *** ERROR ***                           CP =     333.172   TIME= 18:23:17
 The program is unable to open file file1.DSPtri.  If the suggestions in 
 the associated error messages immediately preceding and/or following    
 this error message do not help resolve the file issue, please send the  
 data leading to this operation to your technical support provider,      
 along with the I/O error code of -1 and the system error code of 0,     
 for help in determining the possible reasons as to why this file could  
 not be opened.                                                          

 *** ERROR ***                           CP =     333.172   TIME= 18:23:17
 An input/output error has occurred on the process with MPI Rank ID = 1. 
  This error occurs when trying to open a file with length = 34 GB.      
 Please check to make sure there is enough free disk space in the        
 working directory (D:Ansys ProjectsG¸ttlerrun-2 -                    
 v1_filesdp0StudyAIMphysics2) on machine (MARCELL-HPZ4).             
 

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Thanks in advance,

Marcell

[Brian Bueno]

marcellszeles

I will ask our team of experts and let you know their recommendation.