On 2/1/23 00:50, Vahid Askarpour via users wrote:
> Hi,
>
> I am running a fortran code (Perturbo) compiled in hybrid openmp/openmpi. The
> code runs on 2 nodes (128 processors) with 32 MPI processes and 4 threads/MPI
> process. I am attempting to verify that a variable involved in the
> calculations in all the MPI processes and threads has the same value. So I
> would like to print this variable with the thread # for all the 32 MPI
> processes. Would a simple print statement do the job or would such a print
> statement only print the information for the processes on the master node and
> not both nodes? Is it possible to print this variable for all 64 threads on
> node 1 and all 64 threads on node 2 separately?
>
> Thank you,
> Vahid
Print statement should work, though maybe messy. You might look at
collective operations like min/max or sum. Perhaps do a local check
first using OpenMP, then a collective operation using MPI.
