memory_space

Which memory an array’s storage lives in.

Declaración

Sintaxis

memory_space = Global | Shared | Constant | Thread

Values

Value	Meaning
Global	device global memory, the buffers the host allocates. This is the default, and it is what every array in host code has.
Shared	storage shared by the threads of one threadgroup.
Constant	read only storage.
Thread	storage private to one thread.

Valores devueltos

None. An enumeration value is not evaluated.

Descripción

The memory space is a member of Array. It matters only where the target distinguishes the spaces: Metal qualifies every pointer as device, threadgroup, constant or thread, while CUDA does not qualify pointers at all.

The gpu_memory_space pass assigns the spaces to the arrays of device code. A procedure called with arrays from different spaces cannot be emitted once, because the qualifiers are part of its signature, so the pass clones it per distinct combination of spaces.

The per-thread value is called Thread rather than Private because the ASR enumerations share one namespace, and Private is already a value of access.

Ver también

Array, array_physical_type, exec_space