perf: canonical H2O q6/q8/q9 — OP_MEDIAN, OP_PEARSON_CORR, OP_TOP_N, OP_GROUP_TOPK_ROWFORM#203

Merged

singaraiona merged 17 commits into

feat/canonical-h2ofrom

feat/canonical-h2o-median

May 17, 2026

Commits on May 15, 2026

feat(perf): Phase A — OP_PEARSON_CORR opcode + planner integration

ser-vasilich
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claude
committed
wip(perf): Phase B partial — group.c layout/need-flag for OP_PEARSON_CORR

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claude
committed
feat(perf): Phase B — OP_PEARSON_CORR vectorized hash-agg

ser-vasilich
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claude
committed
wip(perf): OP_PEARSON_CORR — single-HT finalize + extra out_type arms

ser-vasilich
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claude
committed
feat(perf): median per-group fast path — bucket-scatter + ray_median_dbl_inplace

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claude
committed
wip(perf): median fast path — second eval-fallback site

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feat(perf): OP_MEDIAN — dump opcode name

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claude
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feat(perf): OP_MEDIAN — DAG-route integration in exec_group

ser-vasilich
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claude
committed
feat(perf): OP_TOP_N / OP_BOT_N — opcodes + planner integration

ser-vasilich
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claude
committed
feat(perf): OP_TOP_N / OP_BOT_N — per-group bounded-heap kernel

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claude
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feat(perf): OP_TOP_N / OP_BOT_N — exec_group post-radix wiring

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test(h2o): q8 — native (top col K) / (bot col K) coverage

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perf(group): cap histscat tasks at worker count
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fix(group): per-group dispatch survives n_groups > 65536
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perf(raze): O(N) fast path for same-typed numeric vectors
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feat(perf): OP_GROUP_TOPK_ROWFORM — row-form per-group top/bot K
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committed
perf(group_topk): radix-scatter Phase 1 — L2-hot partition HTs
ser-vasilich
committed

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perf: canonical H2O q6/q8/q9 — OP_MEDIAN, OP_PEARSON_CORR, OP_TOP_N, OP_GROUP_TOPK_ROWFORM#203

perf: canonical H2O q6/q8/q9 — OP_MEDIAN, OP_PEARSON_CORR, OP_TOP_N, OP_GROUP_TOPK_ROWFORM#203
singaraiona merged 17 commits into
feat/canonical-h2ofrom
feat/canonical-h2o-median

Commits on May 15, 2026

feat(perf): Phase A — OP_PEARSON_CORR opcode + planner integration

wip(perf): Phase B partial — group.c layout/need-flag for OP_PEARSON_CORR

feat(perf): Phase B — OP_PEARSON_CORR vectorized hash-agg

wip(perf): OP_PEARSON_CORR — single-HT finalize + extra out_type arms

feat(perf): median per-group fast path — bucket-scatter + ray_median_dbl_inplace

wip(perf): median fast path — second eval-fallback site

feat(perf): OP_MEDIAN — dump opcode name

feat(perf): OP_MEDIAN — DAG-route integration in exec_group

feat(perf): OP_TOP_N / OP_BOT_N — opcodes + planner integration

feat(perf): OP_TOP_N / OP_BOT_N — per-group bounded-heap kernel

feat(perf): OP_TOP_N / OP_BOT_N — exec_group post-radix wiring

test(h2o): q8 — native (top col K) / (bot col K) coverage

perf(group): cap histscat tasks at worker count

fix(group): per-group dispatch survives n_groups > 65536

perf(raze): O(N) fast path for same-typed numeric vectors

feat(perf): OP_GROUP_TOPK_ROWFORM — row-form per-group top/bot K

perf(group_topk): radix-scatter Phase 1 — L2-hot partition HTs