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Author Topic: Error during simulation: "forrtl: severe (38)"  (Read 2002 times)


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Error during simulation: "forrtl: severe (38)"
« on: May 23, 2019, 01:29:03 am »

Hello everybody,

i am using FDS 6.7.0 via Pyrosim (rev 2018.3.1210).
During the last simulation, the following error occurred few minutes before the end of simulation.

Does anybody of you have already seen this kind of error?
I am not an expert, but it seems my network connection was lost for a while..
Thanks a lot in advance.


Time Step:  96600, Simulation Time:   2354.80 s
forrtl: Errore di rete imprevisto.

forrtl: severe (38): error during write, unit 6, file L:\Mec_Marine\Land_plant\Archivio_Clienti\Unikolegno\P18_0035_Mob_Vittoria_Prev_Inc\Progettazione\Calcoli\VVF\FSE\Unikolegno_ValProg_FSE_Rev1_2019_04_12\Unikolegno_ValProg_FSE_Rev1_2019_04_12.out
Image              PC                Routine            Line        Source             
fds.exe            00007FF61ED4E507  Unknown               Unknown  Unknown
fds.exe            00007FF61ED14824  Unknown               Unknown  Unknown
fds.exe            00007FF626C77859  Unknown               Unknown  Unknown
fds.exe            00007FF62643CC61  MAIN__                    830  main.f90
fds.exe            00007FF626428632  Unknown               Unknown  Unknown
fds.exe            00007FF626D37A80  Unknown               Unknown  Unknown
KERNEL32.DLL       00007FFF3B107974  Unknown               Unknown  Unknown
ntdll.dll          00007FFF3C0EA271  Unknown               Unknown  Unknown



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Re: Error during simulation: "forrtl: severe (38)"
« Reply #1 on: May 28, 2019, 05:05:04 am »

The simulation caches the information in the temporary files during the scan. Constantly create and delete such files. Sometimes, another program tries to read the cache file when the simulation tries to access it. Windows denies your access request because the file is in use. The programs that can read the cache file are Windows indexing, an antivirus program, disk compression or backup software.