petsc-main 2021-04-20
PetscMemType
Memory type of a pointer
Synopsis
typedef enum {PETSC_MEMTYPE_HOST=0, PETSC_MEMTYPE_DEVICE=0x01, PETSC_MEMTYPE_CUDA=0x01, PETSC_MEMTYPE_NVSHMEM=0x11,PETSC_MEMTYPE_HIP=0x03} PetscMemType;
Developer Note
Encoding of the bitmask in binary: xxxxyyyz
z = 0: Host memory
z = 1: Device memory
yyy = 000: CUDA-related memory
yyy = 001: HIP-related memory
xxxxyyy1 = 0000,0001: CUDA memory
xxxxyyy1 = 0001,0001: CUDA NVSHMEM memory
xxxxyyy1 = 0000,0011: HIP memory
Other types of memory, e.g., CUDA managed memory, can be added when needed.
See Also
VecGetArrayAndMemType(), PetscSFBcastWithMemTypeBegin(), PetscSFReduceWithMemTypeBegin()
Level
beginner
Location
include/petscsystypes.h
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