# Tunables for frank-default-large (unsloth Qwen3.8-27B UD-Q8_K_XL, dankclaw)
# Runtime: llama.cpp llama-server (b10433+, rebuilt 2026-08-14 for bundled-MTP
# support); AMD Strix Halo (gfx1151) 96GB UMA; Ryzen AI MAX+ 395.
MODEL_DIR=/home/dank/models
MODEL_FILE=Qwen3.8-27B-UD-Q8_K_XL.gguf
ALIAS=frank-default-large
HOST=0.0.0.0
PORT=7770
# Context pool. Qwen3.8 native context = 262144 per sequence.
# 524288 total / PARALLEL 2 = 262144 per slot, matching the pi client's
# contextWindow=262144 for frank-default-large. Model is 29GB; ROCm has
# ~70GB headroom, so 2x262k quantized KV fits. Verify at startup.
CTX_SIZE=524288
# Parallel slots. 2026-08-15: DSpark multi-slot crashed the ROCm backend
# (illegal memory access, status 6/ABRT) under two concurrent 16k prose
# prompts, so DSpark was retired and --spec-default (ngram-mod) is used.
# ngram-mod is draftless and passed the strict parallel test historically.
# PARALLEL=2 is the current trial; pin to 1 if the 2x32k stream test fails.
PARALLEL=2
# Spec: llama.cpp --spec-default preset = ngram-mod (n_match 24, n_min 48,
# n_max 64).  No draft model.  Switched from DSpark 2026-08-15 after the
# DSpark multi-slot ROCm crash.  See [[qwen3.8-spec-matrix]].
SPEC_DEFAULT=1
SPEC_TYPE=
DRAFT_FILE=
SPEC_DRAFT_N_MAX=
SPEC_DRAFT_P_MIN=
SPEC_NGRAM_MOD_N_MIN=48
SPEC_NGRAM_MOD_N_MAX=64
SPEC_NGRAM_MOD_N_MATCH=24
# Backend device from --list-devices. Vulkan0 selected 2026-08-15 for high
# context: at 262144 ctx (~200k prompt) Vulkan generates ~5.7 t/s vs ROCm
# ~3.8 t/s (48% faster decode), while ROCm prefills ~12% faster (119 vs 106
# t/s).  Generation is the interactive cost, so Vulkan0 wins at high ctx.
# See docs/bench-high-ctx results and [[qwen3.8-spec-matrix]].
DEVICE=Vulkan0
# Dense model: full offload. (Not MoE.)
N_GPU_LAYERS=all
# KV on GPU, quantized (K q8_0, V q8_0). Keep K == V for Flash Attention;
# mixed types silently disable FA (long-context decode collapses).
CACHE_TYPE_K=q8_0
CACHE_TYPE_V=q8_0
# Batch sizing (verified 2026-08-14 on Qwen3.8 UD-Q8_K_XL):
#   ubatch 128 with batch>=2048 -> premature-EOS under concurrency (unsafe).
#   ubatch 512 -> MTP acceptance collapses (~25%) -> gen ~9 t/s (slow).
#   ubatch 256 -> ~30 t/s gen, concurrent-safe, ~330 t/s prefill.  WINNER.
# batch 8192 keeps single-shot prefill flexibility; ubatch drives the graph.
BATCH_SIZE=8192
UBATCH_SIZE=256
# Sampling settings — per Qwen3.8-27B model card thinking mode.
# Thinking: temp=1.0, top_p=0.95, top_k=20, min_p=0. Clients may override.
# WARNING: do not name this variable TEMP. The ROCm HIP runtime reads the
# TEMP environment variable (JIT kernel-cache dir); TEMP=1.0 made the HIP
# runtime SEGV during model load on Aug 13 2026.
TEMPERATURE=1.0
TOP_K=20
TOP_P=0.95
MIN_P=0.0
THREADS=12
THREADS_HTTP=1