From e8524d4046fcb65ac74b487e364ca0d434a67566 Mon Sep 17 00:00:00 2001
From: Frank <frank@dankware>
Date: Thu, 1 Oct 2026 02:12:54 -0700
Subject: [PATCH] =?UTF-8?q?frank-primary:=20util=200.90=20=E2=80=94=20prod?=
 =?UTF-8?q?uction=20bf16=20boot=20OOM=20fix?=
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The 0.98 boot died at KV allocation: torch OOM tried 10.28 GiB (the exact
3x262144 bf16 pool = 11,047,010,304 bytes) with 9.46 GiB free per rank.
The rootless bench probe had booted the same numbers; the root unit's
pinned-expert path holds ~0.8 GiB/rank more. Util 0.90 returns ~2.5 GiB/rank
of workspace with the pool ask unchanged; measured KV capacity law
(798,280 tokens at 11.05e9) unchanged.
---
 scripts/frank-primary.env     |  2 +-
 tests/frank_primary_unit.bats | 21 +++++++++++++--------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/scripts/frank-primary.env b/scripts/frank-primary.env
index 1347703..a8a14f8 100644
--- a/scripts/frank-primary.env
+++ b/scripts/frank-primary.env
@@ -67,4 +67,4 @@ FRANK_PRIMARY_KV_DTYPE=auto
 FRANK_PRIMARY_MNBT=1024
 FRANK_PRIMARY_GATHER_CHUNKS=32
 FRANK_PRIMARY_GATHER_LANES=64
-FRANK_PRIMARY_UTIL=0.98
+FRANK_PRIMARY_UTIL=0.90
diff --git a/tests/frank_primary_unit.bats b/tests/frank_primary_unit.bats
index 76ba372..a19c22e 100755
--- a/tests/frank_primary_unit.bats
+++ b/tests/frank_primary_unit.bats
@@ -74,16 +74,21 @@ DOWNLOAD="$REPO_ROOT/scripts/download-frank-primary.sh"
 }
 
 @test "the qualified engine shape is in the env file" {
-    # 2026-10-01 boot probe: 262,144 x 3 seqs at bf16 KV, util 0.98,
-    # KV_BYTES 11,047,010,304 PER RANK boots at "KV cache size: 798,280
-    # tokens" and reports max concurrency 3.05x for 262,144-token requests
-    # — all three full windows fit with an 11,848-token margin. The old
-    # "KV_BYTES is PER RANK, 9/16 GiB OOM" law was the MTP4 drafter's
-    # workspace reservation, not a VRAM wall: no-spec takes 11.05 GiB/rank
-    # and boots clean.
+    # 2026-10-01 boot probe: 262,144 x 3 seqs at bf16 KV, KV_BYTES
+    # 11,047,010,304 PER RANK boots at "KV cache size: 798,280 tokens" and
+    # reports max concurrency 3.05x for 262,144-token requests — all three
+    # full windows fit with an 11,848-token margin. The old "KV_BYTES is
+    # PER RANK, 9/16 GiB OOM" law was the MTP4 drafter's workspace
+    # reservation, not a VRAM wall: no-spec takes 11.05 GiB/rank and boots
+    # clean.
+    # UTIL 0.90 is a PRODUCTION-corrected value: the first production boot
+    # at 0.98 died at KV allocation (torch OOM, tried 10.28 GiB with 9.46
+    # free — 0.82 GiB short) while the rootless bench probe at the same
+    # numbers had booted; util 0.90 returns ~2.4 GiB/rank of workspace and
+    # is the deployed value.
     grep -q '^FRANK_PRIMARY_MAXLEN=262144$' "$ENV_FILE"
     grep -q '^FRANK_PRIMARY_SEQS=3$' "$ENV_FILE"
-    grep -q '^FRANK_PRIMARY_UTIL=0.98$' "$ENV_FILE"
+    grep -q '^FRANK_PRIMARY_UTIL=0.90$' "$ENV_FILE"
     grep -q '^FRANK_PRIMARY_KV_BYTES=11047010304$' "$ENV_FILE"
     grep -q '^FRANK_PRIMARY_KV_DTYPE=auto$' "$ENV_FILE"
     grep -q '^FRANK_PRIMARY_MNBT=1024$' "$ENV_FILE"