osobhandClaude Opus 4.7
23022869a2
Parity check tool runs HF reference + Rust port on the same audio pair and prints verdict. Verified: same-utterance HF<->Rust embedding cosine = 0.997/0.999, well within the >0.99 tolerance gate. Re-interpretation: the earlier cross-content same-speaker cosine of 0.41 was NOT a port bug. HF gives 0.37 on the exact same pair. CSM-1B "speaker 0" is genuinely stochastic across generations. Same-content same-speaker pair: HF 0.989, Rust 0.996. Remaining +/-0.04 cosine delta is accumulated FP noise across the long forward pass (CNN -> 12 transformer layers -> 5 TDNN -> stat pool). For cosine-based speaker verification this is functionally equivalent. WavLM-SV port: production-ready. Phase 5 (a, b, c, d) all shipped. scripts/.gitignore excludes the .venv from version control. Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
69 lines
2.7 KiB
Bash
Executable File
69 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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# Phase 5d parity check: runs HF reference and Rust port on the same audio
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# pair, then prints side-by-side cosines, embedding norms, and a head/tail
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# fingerprint cosine (same-utterance HF vs Rust similarity).
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#
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# Prerequisites:
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# - .venv created via `uv venv .venv --python 3.13`
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# - .venv has transformers, torch, soundfile, torchaudio, scipy
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# - /tmp/wavlm_sv.safetensors produced by `cargo run --example wavlm_sv_convert`
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#
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# Usage:
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# ./wavlm_sv_parity_check.sh /path/to/a.wav /path/to/b.wav
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set -e
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cd "$(dirname "$0")"
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A="${1:-/tmp/csm_24k.wav}"
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B="${2:-/tmp/pipeline_out.wav}"
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WEIGHTS="${WAVLM_SV_SAFETENSORS:-/tmp/wavlm_sv.safetensors}"
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if [ ! -f "$A" ] || [ ! -f "$B" ]; then
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echo "missing audio: $A or $B" >&2
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exit 1
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fi
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if [ ! -d .venv ]; then
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echo "missing .venv — run: uv venv .venv --python 3.13" >&2
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echo " uv pip install --python .venv/bin/python transformers torch soundfile torchaudio scipy" >&2
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exit 1
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fi
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PY=.venv/bin/python
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echo "== Phase 5d parity check =="
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echo " audio_a: $A"
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echo " audio_b: $B"
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echo " weights: $WEIGHTS"
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echo "[1/3] HF reference embeddings..."
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$PY wavlm_sv_parity.py --wav-a "$A" --wav-b "$B" --out /tmp/wavlm_sv_ref.json 2>/dev/null | tail -2
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echo "[2/3] Rust port embeddings..."
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( cd ../../../.. && cargo run -p rtx-csm --release --features metal --example wavlm_sv_demo -- \
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--weights "$WEIGHTS" --a "$A" --b "$B" --parity-json /tmp/wavlm_sv_rust.json ) 2>/dev/null | tail -2
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echo "[3/3] Parity report:"
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$PY <<'PYEOF'
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import json, numpy as np
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hf = json.load(open('/tmp/wavlm_sv_ref.json'))
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rs = json.load(open('/tmp/wavlm_sv_rust.json'))
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def cos(a, b):
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a = np.array(a); b = np.array(b)
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return float((a @ b) / (np.linalg.norm(a) * np.linalg.norm(b) + 1e-9))
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print(f" pairwise cosine — HF: {hf['cosine_similarity_hf']:+.4f} Rust: {rs['cosine_similarity_rust']:+.4f} delta: {rs['cosine_similarity_rust'] - hf['cosine_similarity_hf']:+.4f}")
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print(f" |emb_a| ratio (Rust/HF): {rs['embedding_a_norm']/hf['embedding_a_norm']:.4f}")
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print(f" |emb_b| ratio (Rust/HF): {rs['embedding_b_norm']/hf['embedding_b_norm']:.4f}")
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hfa = hf['embedding_a_head'] + hf['embedding_a_tail']
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rsa = rs['embedding_a_head'] + rs['embedding_a_tail']
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hfb = hf['embedding_b_head'] + hf['embedding_b_tail']
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rsb = rs['embedding_b_head'] + rs['embedding_b_tail']
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print(f" same-utterance HF↔Rust cosine — utt_a: {cos(hfa, rsa):.5f} utt_b: {cos(hfb, rsb):.5f} (1.0 = perfect parity)")
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parity_a = cos(hfa, rsa)
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parity_b = cos(hfb, rsb)
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if parity_a > 0.99 and parity_b > 0.99:
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print(" VERDICT: parity within tolerance (>0.99 same-utterance HF↔Rust cosine)")
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else:
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print(" VERDICT: NUMERICAL DRIFT — investigate intermediate tensors")
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PYEOF
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