Implicit Radioss option : single precision error

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello,

 

I usually perform Radioss explicit analysis for crash simulations (12 ms). Now I need to perform a quasi-static simulation lasting 75 seconds, which, with the explicit solver, takes way to long to solve. Here my engine input : 

 

#RADIOSS ENGINE
/RUN/pression_statique_02/1
75000

/VERS/140

/TFILE
5

/PRINT/-50

/ANIM/DT
0 100.


####################
# IMPLICIT OPTIONS #
####################

#Static linear computation:
/IMPL/LINEAR
 
# Printout frequency for linear computation:
/IMPL/PRINT/LINEAR/-1


# Linear solver method :
/IMPL/SOLVER/3
# Iprec  It_max  Itol  Tol
  5      0       3     0.0

 

 

However I get an error termination saying :

MESSAGE ID :                 162

   ** ERROR :  SINGLE PRECISION IS NOT COMPATIBLE WITH IMPLICIT OPTION

 

Would anyone know what this error means and how it can be solved ?

Thanks in advance,

 

Alice

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2016

    Hi Alice,

    Did you specify to run the single precision (-sp) version in RADIOSS?. Implicit analysis is not supported.

     

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  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2016

    Hello George,

     

    Sorry again, I had not seen your reply, thinking I would be notified if response (now I changed my settings).

     

    I finally checked this out, thanks a lot !

     

    Alice

     

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