ex125: nrhs 2
 SUPERLU_DIST LU:
 0-the LU numfactorization 
   0-the MatMatSolve 
   1-the MatMatSolve
   0-the MatMatSolveTranspose
   1-the MatMatSolveTranspose
   0-the MatSolve 
   1-the MatSolve 
   0-the MatSolveTranspose
   1-the MatSolveTranspose
 1-the LU numfactorization 
   0-the MatMatSolve 
   1-the MatMatSolve
   0-the MatMatSolveTranspose
   1-the MatMatSolveTranspose
   0-the MatSolve 
   1-the MatSolve 
   0-the MatSolveTranspose
   1-the MatSolveTranspose