PetscDeviceRegisterMemory#
Register a pointer for use with device-aware memory system
Synopsis#
#include <petscdevice.h>
PetscErrorCode PetscDeviceRegisterMemory(const void *PETSC_RESTRICT ptr, PetscMemType mtype, std::size_t size)
Not Collective
Input Parameters#
ptr - The pointer to register
mtype - The
PetscMemTypeof the pointersize - The size (in bytes) of the memory region
Notes#
ptr need not point to the beginning of the memory range, however the user should register
the
It’s OK to re-register the same ptr repeatedly (subsequent registrations do nothing)
however the given mtype and size must match the original registration.
size may be 0 (in which case this routine does nothing).
See Also#
PetscDeviceMalloc(), PetscDeviceArrayCopy(), PetscDeviceFree(),
PetscDeviceArrayZero()
Level#
intermediate
Location#
src/sys/objects/device/interface/memory.cxx
Index of all Sys routines
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