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+# Ling-3.1-flash fp4 (inclusionAI) — OUR OWN fp8→MXFP4 requant, 4x DGX Spark.
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+#
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+# Built by our converter (ling_fp4_full.py): routed experts (layers 4-72)
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+# requantized fp8_block_128x128 → MXFP4 (e2m1 packed + e8m0 group-32 scales,
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+# vLLM reference_mxfp4 "even" scale mode); dense fp8 + bf16 modules kept
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+# byte-identical. Finalized 2026-10-17: 214025 tensors, 313.2 GB, 54 shards.
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+# config.json: routed_experts_quant_method=mxfp4, scale_dtype=e8m0,
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+# weight_dtype=e2m1, source=fp8_block_128x128, NO scale_fmt (dense fp8 scales
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+# stay F32 — vLLM is_scale_e8m0 is driven by scale_fmt==ue8m0, we keep F32).
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+#
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+# SIZE CORRECTION: an earlier note guessed fp4 ≈ 110 GB → one Spark. WRONG.
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+# The routed experts dominate (512 experts × 68 layers); fp4 only shrinks them
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+# ~0.53×, so the checkpoint is 313 GB → TP4 (78 GB weights/rank), NOT one Spark.
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+# Still a big win: 313 GB fp4 on 4 Sparks vs 534 GB fp8 on 8.
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+#
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+# Base: stock `vllm/vllm-openai:v0.31.0` — the Ling fp4 loader is built in
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+# (bailing_moe_v3.py sets store_dtype=mxfp4 when routed_experts_quant_method==
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+# mxfp4 → Mxfp4MoEMethod; _LING_MXFP4_WEIGHTS_MAPPER maps weight_scale_inv →
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+# weight_scale). No custom image. HF_HUB_OFFLINE=1: this repo is NOT on the HF
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+# hub (local-only requant), so force cache-only resolution.
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+#
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+# TP4 chosen (not TP6) to leave 2 Sparks for the GLM-5.3-Flash-FP4-Local 2x
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+# lane on the same 6 free nodes. 78 GB weights/rank at GMU 0.78 leaves ~15 GB
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+# KV (MLA KV is compact) — if the GB10 UMA boot gate (vLLM #48140) refuses at
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+# 65536, drop --max-model-len to 32768.
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+#
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+# Quality A/B note: tool-eval-bench quality is TP-invariant (same weight math),
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+# so TP4 fp4 vs the fp8 (TP8) isolates the quantization delta. A valid fp8
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+# anchor was never benched (the 10-16 fp8 run scored 67/100 at 3.1% completion —
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+# thinking + 120 s timeout excluded 94/97 scenarios). This fp4 run uses the
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+# ling3 parser + harness --no-think for a valid absolute score.
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+
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+engine = "vllm"
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+name = "Ling-3.1-flash fp4 (4x, our requant, stock v0.31.0)"
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+docker_image = "vllm/vllm-openai:v0.31.0"
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+entrypoint = ["vllm", "serve"]
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+model = "inclusionAI/Ling-3.1-flash-fp4"
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+parent_model = "inclusionAI/Ling-3.1-flash"
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+port = 30000
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+required_nodes = 4
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+tensor_parallel_size = 4
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+pipeline_parallel_size = 1
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+distributed_backend = "mp"
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+args = [
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+ "--served-model-name", "inclusionAI/Ling-3.1-flash-fp4",
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+ "--enable-auto-tool-choice",
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+ "--tool-call-parser", "ling3",
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+ "--trust-remote-code",
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+ "--max-model-len", "65536",
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+ "--gpu-memory-utilization", "0.78",
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+ "--max-num-seqs", "32",
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+ "--max-num-batched-tokens", "8192",
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+]
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+
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+[env]
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+VLLM_ENGINE_READY_TIMEOUT_S = "3600"
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+# local-only repo (not on HF hub) — resolve from the mounted HF cache only
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+HF_HUB_OFFLINE = "1"
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