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pytorch #174456

[DO NOT REVIEW] toy __torch_disaptch__ tracer

by weifengpy · Feb 06, 2026 at 19:15 UTC · scan-8bd19f1b43a4ea4d

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High Risk (50%)

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Risk Assessment

Risk level: High (50%)

Risk Drivers

  • large_diff: Large change: 916 lines modified
  • api_surface_change: API surface changed in 2 file(s)

Intent

2/3 criteria met

Introduce a __torch_dispatch__ based tracer for tensor operation interception.

Acceptance Criteria

  • ✓
    Implement OpTracer to record tensor operations.

    torch/_subclasses/op_tracer.py describes the OpTracer.

  • ✓
    Include a test script to verify tracing.

    test_op_tracer.py serves as a test script for the tracer.

  • ?
    Verify tracing results match with real execution.

    The test script intention is described, lack of test execution details.

Confidence: 90.0% Source: diff analysis AI: openai

Contributors

weifengpy PR Author 5 commits ? Low Trust
Account Age: 988 days
Prior PRs: 116
Merged: 1

Has 1 merged PRs to this repo. unfamiliar with 2 files.

Evidence

Evidence Completeness: 60.0%
ci_passing Pending
tests_passing Passing
build_successful Passing
lint_passing Failing
Missing: security_scan_clean, coverage_maintained

Supply Chain

None Risk
Modifies dependencies
Modifies lockfile
Modifies CI config
Modifies build scripts

Focus Files

Focus on 2 critical file(s)

test_op_tracer.py +456

456 lines changed; New file; Source code

critical
torch/_subclasses/op_tracer.py +460

460 lines changed; New file; Source code

critical

Triage

100

minutes to review

high

effort level

none

staleness risk

Allocate focused review time

Recommendation

REQUEST CHANGES 54.0% readiness

High risk from new contributor - careful review needed

Next Steps

Concern

Consider breaking into smaller PRs

Question

Why is security_scan_clean missing? Consider adding this check.

Question

Why is coverage_maintained missing? Consider adding this check.

Concern test_op_tracer.py

Critical file: 456 lines changed; New file; Source code

Concern torch/_subclasses/op_tracer.py

Critical file: 460 lines changed; New file; Source code