pls help!!! its very urgent

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

Hello guys.. I designed an IMPACT ATTENUATOR .. right now im doing Analysis on it.. It is taking a longgggggggggggg time to get the solution,..  i have been waiting for the solution since past 6 hours image/emoticons/default_sad.png' alt=':(' srcset='/emoticons/sad@2x.png 2x' width='20' height='20'> :(image/emoticons/default_sad.png' alt=':(' srcset='/emoticons/sad@2x.png 2x' width='20' height='20'> .. I have to submit the report in a while.. can u pls help me..

how to increase the speed of the solver process?n what exactly is MPI ? can MPI be used to enhance the speed..?? Thank you so much!!

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2015

    Hi Priyanka,

     

    Please maintain unit consistency in your model.

     

    i am not sure whether the units of time used is secs or milli seconds, but try to work on the /RUN time.

     

    Also, check if there are penetrations in your model. Please check contact interfaces in your model if exsists.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2015

    Hello,

     

    explicit calculations takes time, 6 hours.... our models can take 6 days (whole carbodies) ....

     

    It depends from a lot of things, we can't discuss that inside a forum.

    Some keywords: smallest elements, number and types of contacts, type of materials.... you have to prepare your model for explicit analysis

     

    MPI: Message Passing Interface (support of multi-core or cluster systems)

    You need MPI to run the SPMD (Hybrid Massively Parallel Program) version of radioss. It gives you normaly a massive performance boost (depends on the models).

     

    Best regards,

    Mario

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2015

    To add to the above, the total simulation time also depends on modelling(penetration, contacts, rigids, etc..), element formulation used, etc..                                     

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