How to restart a simulation in MPI mode
Hi everybody
I have done a simulation in MPI mode with AVL Fire 2011. now I want to restart the simulation from a specific time step. but like single mode, just one processor runs the simulation. how can I fix it? best regards Hamed |
Hi hamed,
If I understood correctly, you already calculated using MPI mode. And then, you want to restart from a specific time step using single(serial) mode. Right? Basically, there is no special way. I hope you are familiar to use the shell. the command is cfdwm_solver -solver_vers=v2011 -case=Case -restart=Case.rs0 You have to know which restart file(CaseName.rs0 or CaseName.rs1) or backup file(CaseName.bc_00####) is for the specific time. Please see the fla file. If you have some problems to restart, please describe more detail. - error message - your application(moving mesh? combustion? aftertreatment? porosity?...) - others |
thanks for response kimmhw
I already calculated my simulation using MPI mode and I want to restart it using MPI again. but after choosing MPI mode and 8 number of processors, just one processor is working and the rest of processors work with 0 % CPU as shown in task manager. I do not know how to use all processors for restarting. |
Quote:
Frankly, it is not easy to understand your problem exactly without your model/log message. But please try to do as below. 1) if you start the calculation using GUI there is one advanced option in job setup menu. Advanced Setting - check "disable file locking " 2) if you start the calculation on shell Add one argument (-no_file_locking). cfdwm_solver -solver_version=v2011 -case=CaseName -mpi -cpu=8 -restart=CaseName.rs0 -no_file_locking |
Thanks kimmhy
"disable file locking" was helpful. |
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