failure of test_topk<migraphx::shape::float_type, 1000, 120000> is based on the input data pattern

[lakhinderwalia]

Turning into a PR, just to show TopK test failure. Fails in Rocm 7.1

Motivation

Technical Details

Changelog Category

• • Added: New functionality.
• • Changed: Changes to existing functionality.
• • Removed: Functionality or support that has been removed. (Compared to a previous release)
• • Optimized: Component performance that has been optimized or improved.
• • Resolved Issues: Known issues from a previous version that have been resolved.
• • Not Applicable: This PR is not to be included in the changelog.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4376   +/-   ##
========================================
  Coverage    92.26%   92.26%           
========================================
  Files          560      560           
  Lines        26358    26358           
========================================
  Hits         24319    24319           
  Misses        2039     2039           

Files with missing lines	Coverage Δ
src/include/migraphx/generate.hpp	100.00% <100.00%> (ø)

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[pfultz2]

This can happen when the values are very close with ±1 ULP due to subtle differences in the CPU and GPU. Its not an issue that needs to be fixed.

[lakhinderwalia]

This can happen when the values are very close with ±1 ULP due to subtle differences in the CPU and GPU. Its not an issue that needs to be fixed.

This CI pipeline doesn't show Rocm 7.1 failures: failures are now observed for the previously passing tests. These are verify failures between ref and gpu. Example:

[   RUN    ] test_topk<migraphx::shape::float_type, 1029, 80000>
FAILED: gpu
RMS Error: 0.021213
Max diff: 39558
Mismatch at 733: 12362 != 51920```