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.
Product and Performance Information |
---|
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201 |
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.
array
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.
array
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.
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