launcher/recipes/glm53-flash-nvfp4-lab-dflash2/recipe.toml

# NOTE: the lab's DFlash2 checkpoints are MXFP8-quantized (weight_scale
# tensors) and their config names the arch DFlash2DraftModel — the lab image
# registers the drafter under DFlashDraftModel and its loader has no MXFP8
# scale support (ValueError: no parameter 'weight_scale'). So this lane uses
# a dequantized bf16 copy (exact value reconstruction of the MXFP8 tensors)
# packaged as local-inference-lab/GLM-5.3-Flash-DFlash2-bf16-lab (arch
# DFlashDraftModel) in the shared NAS hub. The aiden-image lane uses the
# sibling -bf16 repo (arch DFlash2DraftModel). Hand-rolled HF hub repos: refs/main
# must be the snapshot dir name as EXACT 40-hex, no trailing newline (the hub
# offline resolver reads it unstripped — `echo` breaks resolution, use printf).
# GLM-5.3-Flash NVFP4 — local-inference-lab quant (vLLM) — 2× DGX Spark, TP=2.
#
# local-inference-lab mixed quant: NVFP4 routed experts (layers 3–44,
# group-16) + MXFP8 MTP experts (layer 45) + W4A4 input scales. Best agent
# quant so far: tool-eval-bench 89/100 (vs 85 LibertAIDAI, 90 official FP8).
# Model: https://huggingface.co/local-inference-lab/GLM-5.3-Flash-NVFP4
#        (~186 GB → 92.72 GiB weights/node; KV pinned at 10 GiB, see below)
#
# Image: glm53-flash-nvfp4-lab:local (docker-images/glm53-flash-nvfp4-lab/ —
# day-0 arm64 image + NoPE-MLA mod + the four FujitsuPolycom lab-checkpoint
# patches: model naming shim, modelopt MTP namespace fix, persistent_topk
# CC-12.x guards). Their launch config is mirrored below.
# PROVENANCE: https://github.com/FujitsuPolycom/glm53-flash-tp2-spark
#             (Apache-2.0; see patches/UPSTREAM.md) + forum 381350 #41.
#
# Deviations from their launch script (intentional):
#   * no --kda-prefill-backend flashkda (needs their base-image patch — skipped)
#   * --kv-cache-dtype fp8_ds_mla instead of `fp8` (same packed layout; this
#     spelling is what the NoPE-MLA mod booted with on the LibertAIDAI stack)
#   * --language-model-only + no mm-renderer patch/env (text-only)
#   * no bundled NCCL/LD_PRELOAD, no NCCL_* fabric block (our switched fabric
#     is configured via [nccl.ds4] + launcher GID auto-detect)
#   * no --moe-backend marlin: their proven stack uses the default backend for
#     THIS quant and reports clean evals. Sanity-check output for token loops
#     anyway (the silent FP4 MoE corruption gotcha) before trusting a new node.
#   * flashinfer autotune disabled via --kernel-config (their proven boot);
#     VLLM_ENGINE_READY_TIMEOUT_S stays high regardless.
#
# Boot success markers (engine log, in order):
#   "Model loading took 92.72 GiB" → "[quantprobe] ... algo=MXFP8" (MTP fix
#   active; algo=None means broken) → "GPU KV cache size: 1,164,369 tokens" →
#   "Application startup complete". ~700 s sequential weight load.
#
# Test request: chat completions need "chat_template_kwargs":{"reasoning_effort"
# :"low"} — omitted/other values select MAX reasoning effort (empty content on
# short max_tokens).
#
# instanttensor loader — baked into the image (Dockerfile step 3) and enabled
# via args + env knobs below. MEASURED 2026-09-03: 631 s total load vs ~700 s
# sequential (lab model resolves TWO passes: target + MTP/draft shards; the
# r12 spark stack loads once in ~5.5 min). Modest gain, worth keeping.
#
# PREREQUISITES: weights cached on both nodes:
#   hf download local-inference-lab/GLM-5.3-Flash-NVFP4

engine = "vllm"
name = "GLM-5.3-Flash NVFP4-lab (vLLM, 2x Spark, LAB DFlash2-7)"
docker_image = "glm53-flash-nvfp4-lab:local"
docker_image_dir = "glm53-flash-nvfp4-lab"
model = "local-inference-lab/GLM-5.3-Flash-NVFP4"
required_nodes = 2
tensor_parallel_size = 2
pipeline_parallel_size = 1
distributed_backend = "mp"
shm_size = "32gb"

args = [
    # Stable served name — quant-agnostic (shared across glm53 quants)
    "--served-model-name", "glm53",
    "--trust-remote-code",
    "--distributed-executor-backend", "mp",
    # GMU is ONLY a startup guardrail here (KV pool is pinned below): 0.90
    # demands 109.46 GiB free on GB10's 121.63 GiB, but driver reserve +
    # page cache routinely leave ~108.5 -> flaky
    # "Free memory ... less than desired" boot deaths (this was the class
    # of the old "54-second death"), and post-crash reruns see ~106.6 GiB.
    # 0.82 = 99.7 GiB, below any realistic dip; does NOT change what gets
    # allocated (weights ~93 + pinned KV 10 + activations).
    "--gpu-memory-utilization", "0.82",
    # Pinned 10 GiB KV (≈1.16M tokens) — GMU sizing has no headroom at
    # 92.72 GiB weights/node; pinning also keeps warmup off the swap path
    "--kv-cache-memory-bytes", "10737418240",
    "--kv-cache-dtype", "fp8_ds_mla",
    "--block-size", "256",
    "--max-model-len", "524288",
    "--max-num-seqs", "8",
    "--max-num-batched-tokens", "4096",
    "--enable-chunked-prefill",
    "--async-scheduling",
    "--enable-prefix-caching",
    "--disable-custom-all-reduce",
    # Their proven boot: no flashinfer autotune, no CuTe-DSL warmup
    "--kernel-config", """
'{"enable_cutedsl_warmup":false,"enable_flashinfer_autotune":false}'""",
    # MTP-3 draft from the MXFP8 layer-45 shard (needs modelopt.patch in image)
    "--speculative-config", """
'{"method":"dflash","model":"local-inference-lab/GLM-5.3-Flash-DFlash2-bf16-lab","num_speculative_tokens":7}'""",
    "--language-model-only",
    # MTP + CUDA graphs degrades OUTPUT QUALITY on the glm53 day-0 dev build
    # (forum #381350/#44, CONFIRMED by A/B bench 2026-08-28: same seed/flags,
    # graphs on = 89/100, eager = 92/100; decode unchanged 28.4 t/s @ c1,
    # c2 -7%, TTFT +1.6s). The b12x glm52 stack does NOT need this (its
    # graphs+MTP combo benches clean at 100/100) — bug is build-specific.
    "--enforce-eager",
    # instanttensor loader (0.1.9 baked in image; ~30 s load vs ~700 s NFS)
    "--load-format", "instanttensor",
    "--tool-call-parser", "glm47",
    "--enable-auto-tool-choice",
    "--reasoning-parser", "glm45",
]

[env]
HF_HUB_OFFLINE = "1"
# lab INSTANTTENSOR loader knobs (same values the spark recipe validated:
# lil render BACKEND/CONCURRENCY/IO_DEPTH + lil.yaml BUFFER_SIZE/CHUNK)
INSTANTTENSOR_BACKEND = "BUFFERED"
INSTANTTENSOR_CONCURRENCY = "1"
INSTANTTENSOR_IO_DEPTH = "3"
INSTANTTENSOR_BUFFER_SIZE = "67108864"
INSTANTTENSOR_CHUNK_SIZE = "8388608"
# NoPE-MLA rope-pad runtime gate (mod baked into the image)
VLLM_MLA_NOPE_PAD_ROPE = "1"
VLLM_ENGINE_READY_TIMEOUT_S = "3600"
# Upstream launch-script env (memory + compile knobs)
PYTORCH_CUDA_ALLOC_CONF = "expandable_segments:True"
VLLM_USE_AOT_COMPILE = "0"
TORCH_USE_RTLD_GLOBAL = "1"
VLLM_NO_USAGE_STATS = "1"

# Architecture (aarch64 / sm_121a DGX Spark)
TORCH_CUDA_ARCH_LIST = "12.1a"
FLASHINFER_CUDA_ARCH_LIST = "12.1f"
CUTE_DSL_ARCH = "sm_121a"
CMAKE_CUDA_ARCHITECTURES = "121"
OMP_NUM_THREADS = "4"