Research 134: batch plans' stage 1 measured (b10 = a6fabf0 against b9, interleaved): knapsack's per-batch cost 0.90 to 0.68 us and knapsack 11.48 to 10.34 ms, short of 025's bars (0.60 us, 10.3 ms): 025 counted the pass's per-instruction head as lookups; sum0 2,330 to 1,822 instructions a batch (bar 1,550); matmul 40.0 to 38.2 ms with the same instructions and BFS 24.04 to 24.31 with 0.2% fewer (placement); sum0's 8.69 to 6.13 ms mostly the compiler now vectorizing the reductions' first loop; the executor alone the same instructions; what is left a batch is the pass's Val handling (stage 2); 041 runs.sh pairs, pairs and counts data

4 files changed, 152 insertions, 1 deletions

diff --git a/research/experiments/041-batches/2026-10-08-batch-costs.jsonl b/research/experiments/041-batches/2026-10-08-batch-costs.jsonl
index b3eba50..49332e9 100644
--- a/research/experiments/041-batches/2026-10-08-batch-costs.jsonl
+++ b/research/experiments/041-batches/2026-10-08-batch-costs.jsonl
@@ -83,3 +83,9 @@
 {"work": "knapsack", "line": "module-batch.c:1715", "ms_1024": 0.042, "ms_256": 0.103}
 {"note":"time.c sum0 n=200000 (4M rounds), 21 rounds median, b9 BATCH 1024 then 256","module":"sum0.pmod","n":200000,"ms":8.633,"work":44000019,"out":4000000}
 {"note":"time.c sum0 n=200000 (4M rounds), 21 rounds median, b9 BATCH 1024 then 256","module":"sum0.pmod","n":200000,"ms":12.544,"work":44000019,"out":4000000}
+{"note":"icount over time.c's 3 rounds (n 51200: 3,000 and 12,000 batches), b9 = 735ba81 and b10 = 140cc46 (design 025 stage 1), BATCH 1024 and 256","version":"b9","module":"sum0","instructions":[47885467,68855349],"cycles":[16221217,23496974]}
+{"version":"b9","module":"ops0","instructions":[66412005,85341885],"cycles":[30351488,36805399]}
+{"version":"b10","module":"sum0","instructions":[34047758,50448573],"cycles":[11650551,17023859]}
+{"version":"b10","module":"ops0","instructions":[52772240,67691004],"cycles":[25970653,30661478]}
+{"note":"time.c sum0 n=200000, 21 rounds median, twice each","version":"b9","ms":[8.690,8.689],"ms_256":[12.545,12.552]}
+{"version":"b10","ms":[6.133,6.136],"ms_256":[9.069,9.070]}
diff --git a/research/experiments/041-batches/2026-10-08-counts.jsonl b/research/experiments/041-batches/2026-10-08-counts.jsonl
index abd3cdc..546030b 100644
--- a/research/experiments/041-batches/2026-10-08-counts.jsonl
+++ b/research/experiments/041-batches/2026-10-08-counts.jsonl
@@ -26,3 +26,13 @@
 {"version":"b9","way":"rounds","work":"bfs","instructions":4711633461,"cycles":2071776932}
 {"version":"b9","way":"batches","work":"words","instructions":3977119553,"cycles":1807496057}
 {"version":"b9","way":"rounds","work":"words","instructions":3934435031,"cycles":1790741535}
+{"version":"b10","way":"batches","work":"bfs","instructions":3366842980,"cycles":1652810363}
+{"version":"b10","way":"rounds","work":"bfs","instructions":4711632737,"cycles":2152941471}
+{"version":"b10","way":"batches","work":"knapsack","instructions":377446216,"cycles":119812731}
+{"version":"b10","way":"rounds","work":"knapsack","instructions":21688103096,"cycles":7553046280}
+{"version":"b10","way":"batches","work":"matmul","instructions":967871186,"cycles":329990340}
+{"version":"b10","way":"rounds","work":"matmul","instructions":21436715982,"cycles":6620761799}
+{"version":"b10","way":"batches","work":"roots","instructions":165861326,"cycles":113397325}
+{"version":"b10","way":"rounds","work":"roots","instructions":2755945365,"cycles":989112526}
+{"version":"b10","way":"batches","work":"join","instructions":1868533943,"cycles":1049050190}
+{"version":"b10","way":"rounds","work":"join","instructions":7669661641,"cycles":3314577656}
diff --git a/research/experiments/041-batches/2026-10-08-pairs.jsonl b/research/experiments/041-batches/2026-10-08-pairs.jsonl
new file mode 100644
index 0000000..1d16abf
--- /dev/null
+++ b/research/experiments/041-batches/2026-10-08-pairs.jsonl
@@ -0,0 +1,120 @@
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+{"version":"b10-256","way":"batches","turn":5,"work":"matmul","pure_median_ms":38.295,"c_median_ms":7.578,"ratio":5.053,"agree":true}
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diff --git a/research/experiments/041-batches/runs.sh b/research/experiments/041-batches/runs.sh
index 876f249..4da74fb 100755
--- a/research/experiments/041-batches/runs.sh
+++ b/research/experiments/041-batches/runs.sh
@@ -10,6 +10,11 @@
 #   runs.sh counts NAME [WORK ...]         user-mode instructions and cycles
 #                                          of suite-run's 3 rounds, each of
 #                                          the two executor ways (icount.c)
+#   runs.sh pairs A B ROUNDS TIMES [WORK ...]  the batches way of A then B,
+#                                          TIMES turns (interleaved: the
+#                                          medians of A's and B's turns)
+# (A build of another lane count: CPPFLAGS=-DPURE_BATCH_LANES=256 with
+# 040's runs.sh build.)
 set -e
 here=research/experiments/041-batches
 builds=$HOME/.cache/pure-040
@@ -41,7 +46,17 @@ counts)
                 | sed "s/^{/{\"version\":\"$name\",\"way\":\"$way\",\"work\":\"$work\",/" >> "$here/$day-counts.jsonl"
         done
     done ;;
-*) echo "runs.sh suite NAME ROUNDS [WORK ...] | counts NAME [WORK ...]" >&2
+pairs)
+    other=$1 rounds=$2 times=$3
+    shift 3
+    for turn in $(seq "$times"); do
+        for version in "$name" "$other"; do
+            quiet
+            PURE_JIT=0 python3 research/guard.py --most 3072 -- "$builds/$version/suite-run" "$builds/$version" "$rounds" "$@" \
+                | grep median | sed "s/^{/{\"version\":\"$version\",\"way\":\"batches\",\"turn\":$turn,/" >> "$here/$day-pairs.jsonl"
+        done
+    done ;;
+*) echo "runs.sh suite NAME ROUNDS [WORK ...] | counts NAME [WORK ...] | pairs A B ROUNDS TIMES [WORK ...]" >&2
     exit 2 ;;
 esac
 # 2026-10-08-lanes.jsonl (research 132): b9's code with BATCH 1024, 512 and