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chore(scripts): restore PR #65 (Q8_0 default + --target flag) lost in ht rewrite #88

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chore(scripts): restore PR #65 (Q8_0 default + --target flag) lost in ht rewrite #88

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19 changes: 14 additions & 5 deletions scripts/bench-dflash.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -6,11 +6,19 @@
# pair runs N times so variance is visible (DFlash bench has ±2-3pp
# run-to-run variance even at temp=0 / fixed seed).
#
# VRAM requirement: ~22 GB free (target Q4_K_M ~18 GB + drafter ~1-3 GB +
# compute). Coordinate centurion-llm scale-down before running.
# VRAM requirement (target + ~1-3 GB drafter + compute):
# - Q4_K_M target ~18 GB → ~22 GB total (fits on a single 24 GB card)
# - Q8_0 target ~33 GB → ~38 GB total (titan A100 80 GB only)
# - BF16 target ~62 GB → ~67 GB total (titan A100 80 GB only)
# Coordinate centurion-llm scale-down before running on shared hardware.
#
# Usage:
# scripts/bench-dflash.sh [--quants Q4,Q6,Q8,BF16] [--runs 3] [--ctx 4096]
# scripts/bench-dflash.sh [--target PATH] [--quants Q4,Q6,Q8,BF16] [--runs 3] [--ctx 4096]
#
# Default target is gemma-4-31B-it-Q8_0.gguf — the higher-quality reference
# preferred for DFlash quality measurement (Markus 2026-06-04). For VRAM-
# constrained local runs, override with --target gemma-4-31B-it-Q4_K_M.gguf
# (or set DFLASH_BENCH_TARGET in the env).
#
# Output goes to /tmp/dflash-bench-<timestamp>.md with a markdown summary
# table at the bottom.
Expand All @@ -25,8 +33,8 @@ set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
BIN="$ROOT/build-cuda/bin/llama-speculative-simple"
TARGET="$ROOT/models/gemma-4-31B-it-Q4_K_M.gguf"
DRAFTER_DIR="$ROOT/models/dflash-gemma4-31b-gguf"
TARGET="${DFLASH_BENCH_TARGET:-$ROOT/models/gemma-4-31B-it-Q8_0.gguf}"
DRAFTER_DIR="${DFLASH_BENCH_DRAFTER_DIR:-$ROOT/models/dflash-gemma4-31b-gguf}"
TS=$(date +%Y%m%d-%H%M%S)
OUT="/tmp/dflash-bench-$TS.md"

Expand All @@ -36,6 +44,7 @@ CTX=4096

while (( $# )); do
case "$1" in
--target) TARGET="$2"; shift 2 ;;
--quants) QUANTS="$2"; shift 2 ;;
--runs) RUNS="$2"; shift 2 ;;
--ctx) CTX="$2"; shift 2 ;;
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