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Segmentation Fault in Starter


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#1 RJW

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Posted 23 December 2008 - 05:02 AM

Hi,

I'm trying to benchmark a m/c with a Radioss model. I have run simple jobs on it OK but when I try to use more complex jobs the starter module fails with a segmentation fault. The model I have been given has run on other machines.

I have tried other, larger models (downloaded from the Altair website) and a similar thing happens only earlier in the data check process.

Has anyone had a similar experience?

Thanks

#2 hwsupport

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Posted 23 December 2008 - 10:07 AM

Hello RJW,

The issue is probably related to stacksize of the machine.

If you set stacksize to unlimited - the starter should run through with any segmentation issues.

If it's a linux machine, depending the shell this is how you set stacksize

in csh SHELL
to know all limits, type :
limit
To set the Stacksize to unlimited type :
unlimit stacksize



In ksh,bash,sh:

the command to know all limits is :
ulimit -a
to set the Stacksize to unlimited type:
ulimit -s unlimited

Hope this works

HWSUPPORT


#3 SeemannR

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Posted 27 August 2013 - 03:29 AM

I would like to open this thread again, since I am having a similiar problem.

 

With one particular model of mine I keep getting a "segmentation violation" error

 

a section of the output file:

 

 +=============================================================+
 |     ABNORMAL END                                            |
 |          Segmentation Violation                             |
 |     TRACE BACK :                                            |
 +=============================================================+
 RADIOSS ENGINE                                                                                                                     
  SOLUTION PHASE: Processor=    1/    1                                                                                             
   MAIN LOOP: Cycle=    0                                                                                                           
    SORTIES L00 ANIM TH                                                                                                             
 +=============================================================+
 
 
 
     ERROR TERMINATION

 

The error almost seems to occur randomly, however only with one particular model so far.

Sometimes the solver runs, but mostly it doesnt.

 

Since I use windows I have done the settings as suggeted by the radioss user guide. (KMP_STACKSIZE = 64m).

However it doesnt seem to help.

 

Is there anything else I could do to fix this?

 

regards

Ralf



#4 SeemannR

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Posted 11 September 2013 - 07:00 AM

Now, keep having this problem when I try to run a HyperStudy analysis. 

 

When I run the model file just by itself with radioss it works. However, if I want to do the nominal run in HyperStudy I get the same segmentation violation error.

 

What could it be?



#5 hexagon

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Posted 27 September 2013 - 12:16 PM

Hi,

 

Have you tried dos2unix conversion? Maybe it could help. I was experincing a problem like that and dos2unix conversion helped me alot.

Another thing is keep your solver executables and c/c+ libraries up to date.



#6 caner.kara

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Posted 04 October 2013 - 06:28 AM

Hi

 

I am trying to solve an explicit problem with Radioss and having similar problem. When it comes to "GROUPS" it gives this error and terminates the job. Any advice?

 

 

 

+=============================================================+
 |     ABNORMAL END                                            |
 |          Segmentation Violation                             |
 |     TRACE BACK :                                            |
 +=============================================================+
   GROUPS                                                                                                                                             
 +=============================================================+
 
ERROR id : 760
** ERROR TRAPPED
 
 
 
 Starter STOPPED due to INPUT ERROR






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