Re-export BlasLevel3 through the canonical ndarray::simd surface - #297
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hpc::amx_matmul and hpc::bf16_tile_gemm are already re-exported through
simd.rs so consumers reach native-SIMD-dispatching kernels through one
import path; blas_level3's GEMM/syrk/symm/trmm/trsm trait was missing
from that surface, so a tract-side GEMM kernel pilot needed to import
hpc::blas_level3 directly, violating the W1a consumer invariant ("all
SIMD from ndarray::simd").
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012wrzeZAdwGYTCKoxamwQht
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📝 WalkthroughWalkthroughThe SIMD module now publicly re-exports ChangesSIMD BLAS exports
Estimated code review effort: 1 (Trivial) | ~2 minutes Merge Risk: 🔵 Low · up to The SIMD facade now exposes BLAS Level 3 operations and Side, but callers of operations requiring Uplo must import that type outside the facade. This is a bounded API usability gap and should be addressed before relying on the facade as a complete BLAS import surface. Suggested reviewers: Poem
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syrk/symm/trmm/trsm all take a Uplo parameter, but it was only reachable via hpc::blas_level2 — a consumer importing only ndarray::simd::* couldn't call those methods without also reaching into hpc directly, contrary to the facade contract the previous commit's comment states. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012wrzeZAdwGYTCKoxamwQht
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Actionable comments posted: 2
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Inline comments:
In `@src/simd.rs`:
- Line 655: Enrich the public BlasLevel3 trait method documentation in
BlasLevel3 with compile-tested # Examples sections for each newly exposed
method, covering representative valid usage and matching the existing API
signatures; leave the re-export unchanged.
- Line 655: Update the BlasLevel3 re-export in src/simd.rs to also expose Uplo,
preserving the existing BlasLevel3 and Side exports so consumers can access all
required symbols through ndarray::simd.
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2 participants
What
hpc::amx_matmulandhpc::bf16_tile_gemmare already re-exported throughsimd.rsso consumers reach native-SIMD-dispatching kernels through one canonical import path.hpc::blas_level3(theBlasLevel3trait —blas_gemm/blas_gemm_intoand siblings syrk/symm/trmm/trsm) was missing from that surface.Why
A
tract(AdaWorldAPI fork, path-patched onto this repo) staged GEMM-kernel pilot needed real GEMM, and without this re-export the only way to reach it wasndarray::hpc::blas_level3::BlasLevel3directly — the exact raw-surface-reach pattern thendarray::simdconsumer convention exists to prevent ("all SIMD fromndarray::simd", per this repo's own CLAUDE.md and the W1a consumer contract).What this is not
Purely additive — one
pub useline, same style as the existinghpc::amx_matmul/hpc::bf16_tile_gemmre-export blocks insimd.rs. No behavior change to any existing type or function.Co-Authored-By: Claude Sonnet 5 noreply@anthropic.com
Claude-Session: https://claude.ai/code/session_012wrzeZAdwGYTCKoxamwQht
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