HP MLIB User's Guide Vol. 2 7th Ed.

790 HP MLIB LAPACK User’s Guide
pdgstrs_Bglobal/pzgstrs_Bglobal Solve systems of distributed linear equations.
NOTE The N-by-NRHS matrix B must reside on all processes.
ldb
(input)
(global) Leading dimension of matrix B.
nrhs
(input)
(global) Number of right-hand sides.
stat
(output)
Record the statistics about the triangular solves.
info
(output) = 0
: successful exit
< 0: if info= -i, the i-th argument had an illegal value.