#include "petscmat.h" PetscErrorCode MatSetRandom(Mat x,PetscRandom rctx)Logically Collective on Mat
| x | - the matrix | |
| rctx | - the random number context, formed by PetscRandomCreate(), or NULL and it will create one internally. | 
| x | - the matrix | 
     PetscRandomCreate(PETSC_COMM_WORLD,&rctx);
     MatSetRandom(x,rctx);
     PetscRandomDestroy(rctx);