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THE MAXIMUM FRONT SIZE COMPUTED IN SYMBOLIC DECOMPOSITION IS TOO LARGE.

Experimenter
Experimenter

Hi everyone,

 


I am getting this fatal message at the f06-file:

 

***************************************************

   NX Nastran Contact Face Refinement (REFINE)

            (version 10.0 )            

 ***************************************************

 

 *** USER INFORMATION MESSAGE 4690 (REFINE)

     MAXMIMUM REFINEMENT PER FACE: 4

     MINIMUM REFINEMENT PER FACE: 4

     *** USER INFORMATION MESSAGE 4690 (FOCOEL)

     CONNECTION STATISTICS

                        CONTACT SUBCASE ID:               1

                        CONTACT SET ID:             100

             NUMBER OF CONTACT PAIRS:               1

            NUMBER OF CONTACT ELEMENTS CREATED:          265560

             NUMBER OF CONTACT FACES:           44260

             CONTACT PAIR ID:               1

             SOURCE REGION ID:               1

             TARGET REGION ID:               2

             CHARACTERISTIC LENGTH:    2.267927E+00

             NORMAL PENALTY FACTOR:    4.409313E-01

             TANGENTIAL PENALTY FACTOR:    4.409313E-02

            NUMBER OF EFFECTIVE CONTACT FACES:           44260

 ^^^     

 ^^^BEGIN CONTACT ITERATIONS FOR SUBCASE NUMBER          1

 ^^^    

 ^^^    

 ^^^CONTACT ITERATION NUMBER         1

 ^^^    

 ^^^NUMBER OF INACTIVE CONTACTS:                    0

 ^^^NUMBER OF STICKING CONTACTS:                265560

 ^^^NUMBER OF SLIDING CONTACTS:                      0

 

 *** SYSTEM FATAL MESSAGE 7796 (DFMSA)

     THE MAXIMUM FRONT SIZE COMPUTED IN SYMBOLIC DECOMPOSITION IS TOO LARGE.

     USER INFORMATION: THE MAXIMUM FRONT SIZE ALLOWED ON YOUR MACHINE IS  46340.

HOWEVER, THE ESTIMATED MAXIMUM FRONT SIZE WAS COMPUTED TO BE        51651. 

     USER ACTION:  USE A DIFFERENT RE-ORDERING SCHEME VIA SYSTEM(206), USE THE ILP64 VERSION OF NASTRAN,  OR REDUCE THE SIZE OF YOUR MODEL.

 

0FATAL ERROR1

 

* * * END OF JOB * * *

 

 

I am calculating with a Cluster, so it muss be enough memory for this calculation.

I cannot reduce my model any more, and I don´t understand the other advices that the software give me to resolve it.

 

Thanks in advances for your answers. 

1 REPLY

Re: THE MAXIMUM FRONT SIZE COMPUTED IN SYMBOLIC DECOMPOSITION IS TOO LARGE.

Siemens Genius Siemens Genius
Siemens Genius

How are you running this job? That is, what command line did you use to run the job? What version of nastran are you running?