#include <petscsys.h> PetscErrorCode PetscMalloc2(size_t m1,type **r1,size_t m2,type **r2)Not Collective
| m1 | - number of elements to allocate in 1st chunk (may be zero) | |
| m2 | - number of elements to allocate in 2nd chunk (may be zero) |
| r1 | - memory allocated in first chunk | |
| r2 | - memory allocated in second chunk |