process id in DA
Barry Smith
bsmith at mcs.anl.gov
Wed Nov 12 19:15:22 CST 2008
Doesn't look like it: but from the formula
rank = i + j*Mp + k*Mp*Np
i = rank % Mp
k = rank/(Mp*Np)
j = (rank - k*Mp*Np)/Mp
Barry
Or something similar.
Mp, Np are the number of processes in the x and y directions
On Nov 12, 2008, at 6:24 PM, Shao-Ching Huang wrote:
> Hi,
>
> Is there a PETSc call to obtain the "process coordinates" in a process
> grid, partitioned by a DA? (Something like what MPI_Cart_coords does.)
>
> Thanks,
>
> Shao-Ching
>
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