Clarify llama-bench harness scope

scripts/bench-ubatch.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+# Benchmark ubatch with llama-bench for frank-default-large.
+#
+# This is intentionally a ubatch-only benchmark. It uses one llama-bench
+# process, a fixed 16K prompt workload, and a fixed batch size large enough to
+# hold that workload. No server process, HTTP requests, or log scraping are used.
+#
+# Run on Dankclaw after stopping frank-default-large:
+#   sudo systemctl stop frank-default-large
+#   ./scripts/bench-ubatch.sh
+#   sudo systemctl start frank-default-large
+set -euo pipefail
+
+: "${LLAMA_BENCH:=/home/dank/GitPackages/ROCmFPX/build-strix-rocmfp4/bin/llama-bench}"
+: "${MODEL:=/home/dank/models/kingjones-Qwen3.8-27B-STRIX-MTP/Qwen3.8-27B-Uncensored-Q6_0_ROCMFPX_AGENT.gguf}"
+: "${UBATCH_VALUES:=256,512,768,1024,1280,1536,1792,2048,3072,4096,5120,6144}"
+: "${CONTEXT:=16384}"
+: "${GEN_TOKENS:=128}"
+: "${REPETITIONS:=3}"
+: "${DEVICE:=ROCm0}"
+: "${OUTPUT:=jsonl}"
+
+if [[ ! -x "$LLAMA_BENCH" ]]; then
+    printf 'missing executable llama-bench: %s\n' "$LLAMA_BENCH" >&2
+    exit 1
+fi
+if [[ ! -r "$MODEL" ]]; then
+    printf 'missing or unreadable model: %s\n' "$MODEL" >&2
+    exit 1
+fi
+
+exec "$LLAMA_BENCH" \
+    --model "$MODEL" \
+    --n-prompt "$CONTEXT" \
+    --n-gen "$GEN_TOKENS" \
+    --batch-size "$CONTEXT" \
+    --ubatch-size "$UBATCH_VALUES" \
+    --device "$DEVICE" \
+    --n-gpu-layers 999 \
+    --cache-type-k f16 \
+    --cache-type-v f16 \
+    --flash-attn on \
+    --mmap 0 \
+    --repetitions "$REPETITIONS" \
+    --output "$OUTPUT"