[Cherry-Pick][Optimization] Optimization for gather_logprob by 10GB (#5817)(#5846)

[ckl117]

Motivation

Reduce peak GPU memory usage of (x>=y).sum(-1) by 10GB and 50% performance improvement of (x>=y).sum(-1) when token_num=8k.

Modifications

Implement (x>=y).sum(-1) using Triton

Usage or Command

No

Accuracy Tests

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
  • You can add new tags based on the PR content, but the semantics must be clear.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 60.60606% with 13 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (release/2.4@0d29f6d). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...astdeploy/model_executor/layers/sample/logprobs.py	58.06%	12 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             release/2.4    #5834   +/-   ##
==============================================
  Coverage               ?   58.93%           
==============================================
  Files                  ?      329           
  Lines                  ?    40781           
  Branches               ?     6209           
==============================================
  Hits                   ?    24034           
  Misses                 ?    14867           
  Partials               ?     1880           

Flag	Coverage Δ
GPU	58.93% <60.60%> (?)

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[paddle-bot]

Thanks for your contribution!