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Warning during solving the model

RAMGANESH

Dear Sir,

During solving my model in Radioss the following warning displays

Warning:

The amount of memory allocated for the run is 2093 MB ,which is larger than the specified (or the default) RAM=1000MB,

This run will use minimum core processing in the solver

Kindly explain why it shows like these and how to rectify it

Thanks

Ramganesh

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Altair Forum User

Hi Ramganesh,

I am sure that there are someone here to explain it more deeply,but just to inform you;i can say that this is not an important issue and you don't have to rectify it.The warning doesn't affect your analysis results.

Generally,you can get this warning when you try to solve a big model with so many elements.

Regards.

Altair Forum User

Hi,

the warning does not affect the results but it does effect the calculation time. The less RAM the solver uses, the slower your calcualtion progress will be.

I think with 2039 MB of model size this might be an issue in your case.

Generally, to save computation time, use the solver argument -core in, which will force Optistruct to store all calcualtion data in RAM permanently (as long as enough of it is available on your machine)

RAMGANESH

Dear Florian,

My model size is just 67 MB but during solving it shows that is required memory to solve is 2039 MB.

I am not clear with statement to save computation time .kindly explain briefly how to do it?

Thanks & Regards

Ramganesh

Altair Forum User

yes you are right, i meant 'required memory' by 'model size', sorry.

There are three options available for -core: in, out and min (see Optistruct help -> run options).

in is fastest, because the solver does not have to swap data from hd to ram (or vice versa).

Just type '-core in' into the solver command line before you start your run.

Altair Forum User

Hello! What is the diference between 'In Core' and 'Out Core?'

Altair Forum User

I'm getting this problem...

Thanks in advance!

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gopal_rathore

Hi,

Are you using a cluster for your job run?

it seems there is issue with Mpi , ensure correct location of MPI has been given for job run

Kindly share the command line used for run