PetscGetMemType#
Query the PetscMemType of a pointer
Synopsis#
#include <petscdevice.h>
PetscErrorCode PetscGetMemType(const void *ptr, PetscMemType *type)
Not Collective, No Fortran Support
Input Parameter#
ptr - The pointer to query (may be
NULL)
Output Parameter#
type - The
PetscMemTypeof the pointer
Notes#
Currently only CUDA and HIP memtypes are supported.
The CUDA and HIP calls needed to determine the PetscMemType take a non-trivial amount of time, thus for optimal GPU performance this
routine should be used sparingly and instead the code should track the PetscMemType for its important arrays.
See Also#
PetscMemType, PetscDeviceMalloc(), PetscDeviceCalloc(), PetscDeviceFree(),
PetscDeviceArrayCopy(), PetscDeviceArrayZero()
Level#
intermediate
Location#
src/sys/objects/device/util/memory.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages