Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

processing element and work items

Hi there, I have a general question here. If I compile a kernel with BLOCK_SIZE=32, SIMD_WORK_ITEM=2, 2-D work groups. The kernels has attributes as: __attribute((reqd_work_group_size(BLOC...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Yes, with simd_work_item(2), the compiler generates the same number of process elements (i.e. 1), however, each processing element is wider to do more work.

The "num_compute_units" attribute directly replicates each processing element.