Occupancy

Occupancy#

HIPFORT API Reference: Occupancy

determine the grid and block sizes to achieves maximum occupancy for a kernel More...

Data Types
interface	hipfort::hipoccupancyavailabledynamicsmemperblock
	Returns dynamic shared memory available per block when launching numBlocks blocks on SM. More...

determine the grid and block sizes to achieves maximum occupancy for a kernel

This section describes the occupancy functions of HIP runtime API.

Parameters

[out]	gridSize	minimum grid size for maximum potential occupancy
[out]	blockSize	block size for maximum potential occupancy
[in]	f	kernel function for which occupancy is calulated
[in]	dynSharedMemPerBlk	dynamic shared memory usage (in bytes) intended for each block
[in]	blockSizeLimit	the maximum block size for the kernel, use 0 for no limit

Please note, HIP does not support kernel launch with total work items defined in dimension with size gridDim x blockDim >= 2^32.