diff --git a/benchmark/BENCHMARK_PI5.md b/benchmark/BENCHMARK_PI5.md
index 4387c0e..4cc18c6 100644
--- a/benchmark/BENCHMARK_PI5.md
+++ b/benchmark/BENCHMARK_PI5.md
@@ -34,7 +34,7 @@ M=gguf_artifacts/gemma4-e2b-Q4_K_M.gguf
 # geist auto-runs prefill on all 4 cores and decode on 3.
 # Each point is the MEAN of 10 measured repeats, taken AFTER a discarded
 # warm-up run (--warmup) that pages weights resident and spins up the OMP pool:
-GEIST_WEIGHT_MMAP=1 OMP_WAIT_POLICY=active \
+OMP_WAIT_POLICY=active \
   bin/pi5/release/tests/bench_perf_sweep --gguf $M --seq-lens 128,256,512,1024 --decode-n 16 --warmup 16 --repeats 10
 # llama.cpp reference (4 threads, prefill sweep; llama-bench warms up internally):
 llama-bench -m $M -p 128,256,512,1024 -n 32 -t 4
diff --git a/benchmark/TERNARY_BITNET.md b/benchmark/TERNARY_BITNET.md
index 6a7ec37..1becf78 100644
--- a/benchmark/TERNARY_BITNET.md
+++ b/benchmark/TERNARY_BITNET.md
@@ -170,8 +170,9 @@ the unmodified f16 dot products — only *which* rows get scored is approximate.
 lm_head drops **49.9 → 9.2 ms/token (5.4×)**; RSS +82 MB.
 
 Greedy output is **byte-identical** to the exact dense head (verified, multiple
-prompts) — the true argmax is always inside the 512 candidates. Opt-in; default
-off keeps the exact head (and non-greedy sampling falls back automatically).
+prompts) — the true argmax is always inside the 512 candidates. **Default on**
+for greedy decode on an eligible tied lm_head; `GEIST_SPEC_HEAD=0` forces the
+exact head, and non-greedy sampling falls back automatically.
 
 ### Result — geist vs Cougar vs bitnet.cpp (same Pi, same i2_s model)
 
diff --git a/benchmark/compare_ternary_pi5.sh b/benchmark/compare_ternary_pi5.sh
index 503ba93..d549f80 100755
--- a/benchmark/compare_ternary_pi5.sh
+++ b/benchmark/compare_ternary_pi5.sh
@@ -130,14 +130,14 @@ LLAMA_PN=( -p "$SEQ_LENS" -n "$DECODE_N" -t "$THREADS" -r "$REPEATS" )
 
 echo
 note "=== geist (TQ2_0, SDOT default) ==="
-GEIST_WEIGHT_MMAP=1 OMP_WAIT_POLICY=active OMP_NUM_THREADS="$THREADS" \
+OMP_WAIT_POLICY=active OMP_NUM_THREADS="$THREADS" \
   "$GEIST_BIN" --gguf "$MODEL" --seq-lens "$SEQ_LENS" \
   --decode-n "$DECODE_N" --warmup "$DECODE_N" --repeats "$REPEATS" \
   | tee "$OUT/geist.jsonl"
 
 # Optional: geist with TL1 LUT decode (Apple-tuned path; measure on A76 too).
 note "=== geist (TQ2_0, GEIST_TL1=1 decode) ==="
-GEIST_TL1=1 GEIST_WEIGHT_MMAP=1 OMP_WAIT_POLICY=active OMP_NUM_THREADS="$THREADS" \
+GEIST_TL1=1 OMP_WAIT_POLICY=active OMP_NUM_THREADS="$THREADS" \
   "$GEIST_BIN" --gguf "$MODEL" --seq-lens "$SEQ_LENS" \
   --decode-n "$DECODE_N" --warmup "$DECODE_N" --repeats "$REPEATS" \
   | tee "$OUT/geist-tl1.jsonl"