Finds the collaborators of a process.
void pmpcol(MKL_INT* myproc, MKL_INT* nprocs, MKL_INT* iil, MKL_INT* needil, MKL_INT* neediu, MKL_INT* pmyils, MKL_INT* pmyius, MKL_INT* colbrt, MKL_INT* frstcl, MKL_INT* lastcl);
Using the output from pmpim2 and given the information on eigenvalue clusters, pmpcol finds the collaborators of myproc.
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Notice revision #20110804
The processor number, 0 ≤myproc < nprocs.
The total number of processors available.
The index of the leftmost eigenvalue in the eigenvalue cluster.
The leftmost position in the eigenvalue cluster needed by myproc.
The rightmost position in the eigenvalue cluster needed by myproc.
For each processor p, 0 < p≤nprocs, pmyils[p-1] is the index of the first eigenvalue in the eigenvalue cluster to be computed.
pmyils[p-1] equals zero if p stays idle.
For each processor p, pmyius[p-1] is the index of the last eigenvalue in the eigenvalue cluster to be computed.
pmyius[p-1] equals zero if p stays idle.
Non-zero if myproc collaborates.
- frstcl, lastcl
First and last collaborator of myproc .
myproc collaborates with:
frstcl, ..., myproc-1, myproc+1, ...,lastcl
If myproc = frstcl, there are no collaborators on the left. If myproc = lastcl, there are no collaborators on the right.
If frstcl = 0 and lastcl = nprocs-1, then myproc collaborates with everybody