ap/os/linux/linux-3.4.x/lib/mpi/generic_mpi-asm-defs.h - R306 - Gitiles

 /* This file defines some basic constants for the MPI machinery.  We
  * need to define the types on a per-CPU basis, so it is done with
  * this file here.  */
 #define BYTES_PER_MPI_LIMB  (SIZEOF_UNSIGNED_LONG)
	/* This file defines some basic constants for the MPI machinery. We
	* need to define the types on a per-CPU basis, so it is done with
	* this file here. */
	#define BYTES_PER_MPI_LIMB (SIZEOF_UNSIGNED_LONG)