PetscErrorCode PetscBinarySynchronizedRead(MPI_Comm comm,int fd,void *p,PetscInt n,PetscDataType type)Collective on MPI_Comm
| comm | - the MPI communicator | |
| fd | - the file | |
| n | - the number of items to read | |
| type | - the type of items to read (PETSC_INT, PETSC_DOUBLE or PETSC_SCALAR) |
PetscBinarySynchronizedRead() uses byte swapping to work on all machines. Integers are stored on the file as 32 long, regardless of whether they are stored in the machine as 32 or 64, this means the same binary file may be read on any machine.