Intel® oneAPI Math Kernel Library Developer Reference - C
Computes the number of rows or columns of a distributed matrix owned by the process.
MKL_INT numroc (const MKL_INT *n, const MKL_INT *nb, const MKL_INT *iproc, const MKL_INT *srcproc, const MKL_INT *nprocs);
The numrocfunction computes the number of rows or columns of a distributed matrix owned by the process.
(global input) The number of rows/columns in distributed matrix.
(global input) Block size, size of the blocks the distributed matrix is split into.
(local input) The coordinate of the process whose local array row or column is to be determined.
(global input) The coordinate of the process that possesses the first row or column of the distributed matrix.
(global input) The total number processes over which the matrix is distributed.
(output) Value returned by the function.