PETSc version 3.17.0
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PetscOffloadMask

indicates which memory (CPU, GPU, or none) contains valid data

Synopsis

#include petscsys.h 
typedef enum {
  PETSC_OFFLOAD_UNALLOCATED = 0x0,
  PETSC_OFFLOAD_CPU         = 0x1,
  PETSC_OFFLOAD_GPU         = 0x2,
  PETSC_OFFLOAD_BOTH        = 0x3,
  PETSC_OFFLOAD_VECKOKKOS_DEPRECATED = 0x100,
  PETSC_OFFLOAD_KOKKOS      = 0x100
} PetscOffloadMask;
PETSC_OFFLOAD_UNALLOCATED - no memory contains valid matrix entries; NEVER used for vectors
PETSC_OFFLOAD_GPU         - GPU has valid vector/matrix entries
PETSC_OFFLOAD_CPU         - CPU has valid vector/matrix entries
PETSC_OFFLOAD_BOTH        - Both GPU and CPU have valid vector/matrix entries and they match
PETSC_OFFLOAD_KOKKOS      - Reserved for Kokkos matrix and vector. It means the offload is managed by Kokkos, thus this flag itself cannot tell you where the valid data is.

Level

developer

Location

include/petscdevicetypes.h
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