How To Assign Number of Cores

Altair Forum User

Dear All,

How to assign all number cores to run simulation.

Will Number of cores affect simulation time?

I doubled the RAM (previous 8GB, Now 16GB) , but there is no change in simulation time.

Altair Forum User

Hi,

Assign the number of cores (-nt) in RADIOSS solver run manager and review whether it helps 

Altair Forum User

When starting the calculation type e.g.:'-nt 4' into the fild called 'option'.  This will limit the solver to e.g 4 threads.
(The student version only runs up to 4 threads)

gopal_rathore

Altair Forum User said:

Dear All,

 How to assign all number cores to run simulation.

Will Number of cores affect simulation time?

I doubled the RAM (previous 8GB, Now 16GB) , but there is no change in simulation time.

Yes no. of cores will effect simulation time depending on job size, type of analysis (linear, non-linear etc.),memory or core intensive etc.

There are two types of run:

1) memory intensive :general static analysis jobs  

2)core intensive:iterative jobs like non-linear analysis

 

On running core intensive jobs on high number of cpu's run time can be reduced However after certain number of cores , the time becomes constant.