KI Sub-groups

[christiangnrd]

Includes #682

[github-actions]

Your PR no longer requires formatting changes. Thank you for your contribution!

[codecov]

Codecov Report

❌ Patch coverage is 77.27273% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.78%. Comparing base (cb7049f) to head (56c597e).

Files with missing lines	Patch %	Lines
src/pocl/backend.jl	76.92%	6 Missing ⚠️
src/intrinsics.jl	0.00%	3 Missing ⚠️
src/pocl/compiler/compilation.jl	88.88%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #668       +/-   ##
===========================================
+ Coverage   52.05%   62.78%   +10.72%     
===========================================
  Files          23       23               
  Lines        1921     1967       +46     
===========================================
+ Hits         1000     1235      +235     
+ Misses        921      732      -189     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[christiangnrd]

@maleadt @vchuravy This is ready for final review. If/once accepted I’ll merge the backend subgroup branches into their respective ka 0.10 branch and undo the new branch redirection before merging this one

[maleadt]

I think the ideal solution would be to have get_num_sub_groups always return at least 1 so we can force a sub-group size.

FWIW, I fixed that, and pocl_jll should include the patch merged upstream to make get_num_sub_groups behave sensibly.

[christiangnrd]

FWIW, I fixed that, and pocl_jll should include the patch merged upstream to make get_num_sub_groups behave sensibly.

I never got around to removing setting the subgroup size by default so no changes necessary.

Also, I bumped the required pocl_standalone_jll to 7.1.3, could/should we yank 7.1.3+0 to guarantee no segfaults from libpocl mismatches?