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feat(index): add build timing and summary #103

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feat(index): add build timing and summary #103

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13 changes: 13 additions & 0 deletions index/src/pixelrag_index/pipelines.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,9 @@ def build(config: dict, limit: int | None = None, force: bool = False) -> Path:
Stages: source → ingest (render) → chunk → embed → build index
"""
import itertools
import time as _time

_build_start = _time.time()

source = make_source(config)
try:
Expand Down Expand Up @@ -179,6 +182,7 @@ def build(config: dict, limit: int | None = None, force: bool = False) -> Path:
total_vectors = sum(
np.load(f, mmap_mode="r")["embeddings"].shape[0] for f in npz_files
)
n_vectors = total_vectors
nlist = min(4096, max(1, total_vectors // 40))
logger.info(
"Stage 4/4: Building FAISS index (%d vectors, nlist=%d)...",
Expand All @@ -202,6 +206,15 @@ def build(config: dict, limit: int | None = None, force: bool = False) -> Path:
)

logger.info("Index built at %s", output)

# Summary
elapsed = _time.time() - _build_start
mins, secs = divmod(int(elapsed), 60)
n_docs = len(articles)
logger.info(
"Done in %dm %ds (%d docs → %d vectors)",
mins, secs, n_docs, n_vectors,
)
return output


Expand Down