# GLM-5.3 (full) MXFP4 — 8x DGX Spark @512K, no DCP. # # P2.1 of the 2026-09-18 night: the full model's first 8x trial. The 4x # 512K state is blocked by the DCP>1 sparse-decode crash # (deepseek_v32/attention.py:596, r35+r37); at 8x no DCP is needed: # # weights 403.4 GB / 8 = 50.4 GB/node # budget GMU 0.85 x 121.63 = 103.4 GiB # KV pool 103.4 - 50.4 - 12 (process) = ~41 GiB/rank # 512K req 26.3 GiB -> 1.5x concurrency (768K would be ~39.5, tight) # # Same image/contract as the qualified 4x 131K state (marlin linear, B12X # attention, instanttensor, block 256, RoCE allreduce) minus DCP and the KV # pin (the pool is GMU-driven at 8x). The 4x 131K anchor (dev67 no-spec): # 158/176, 934 pp / 19.0 tg / 2,124 ms. engine = "vllm" name = "GLM-5.3 (full) MXFP4 (r37 img, RedHatAI ckpt, 8x DCP1 @512K)" # Image: the r37 DS4.1 build (2026-09-14, night shift) - the r35 tree's DCP4 # sparse-INDEXER path asserts interleave==1 and then crashes in the DCP sparse # decode reshape during graph capture ("shape '[16, 16, 512]' is invalid for # input of size 524288" - the x4 DCP factor in the attention.py _sparse_ # decode). r37 is the newer DS4.1 lock whose DCP sparse-MLA path is the # qualified one (same tree family as our DCP2/DFlash2 work); the GlmMoeDsa # arch + MTP + b12x ship in the r37 image (verified 2026-09-13). docker_image = "jovian-judgement:r37-ds41" docker_image_dir = "jovian-judgement" # NOTE: build_profile must stay a TOP-LEVEL key — a bare key after # [[extra_mounts]] would parse into the last mount table and be silently # ignored (2026-09-08). build_profile = "r37-ds41" entrypoint = ["vllm", "serve"] model = "RedHatAI/GLM-5.3-MXFP4" parent_model = "zai-org/GLM-5.3" required_nodes = 8 tensor_parallel_size = 8 pipeline_parallel_size = 1 distributed_backend = "mp" shm_size = "32gb" args = [ # R31/r35 delta (their qualified locks): adaptive prefill/decode # compute-time sharing with a fixed 40% prefill floor. "--prefill-compute-share", "0.4", # Stable served name — quant-agnostic (shared across glm53 lanes) "--served-model-name", "glm53", "--trust-remote-code", "--distributed-executor-backend", "mp", # Admission guardrail only (KV is pinned below): 0.85×121.63 = 103.4 GiB. # 0.88 (107.0) is the Flash lane's value and is too tight here — the full # model's weights leave ~24 GiB before the engine's own ~12 GiB. "--gpu-memory-utilization", "0.85", # No KV pin: the pool is GMU-driven at 8x (~41 GiB/rank, see header). # No --kv-cache-dtype: let the r35 fork pick its native default for # GlmMoeDsa attention (the Flash lane's explicit fp8/fp8_ds_mla spellings # both failed auto-selection on this build, and those were Flash-MLA # knobs). The card's --kv-cache-dtype fp8_e4m3 is the fallback spelling # if the pool needs to shrink. "--attention-backend", "B12X", # MXFP4 kernel routing (measured on the first boot, 2026-09-13 ~23:10 UTC): # - MoE: the compressed-tensors W4A4-MXFP4 scheme picks MarlinExperts on # its own (A16 dequant GEMM - correct on GB10). The --moe-backend flag # does not reach that scheme (verified inert: it still logged "Using # MarlinExperts for MXFP4 MoE" with the flag set), so we do not set it. # - LINEAR: the default priority [FlashInfer, Marlin, Humming, B12x] # starts with the FlashInfer kernel, whose is_supported() wrongly # accepts capability 121 (the numeric has_device_capability(100) check # passes on GB10) while the cute-dsl mm_fp4 GEMM it calls rejects it at # runtime with: # BackendSupportedError: mm_fp4 does not support backend 'cute-dsl' # with capability 121 # (the first probe boot died there, kv_b_proj dequant in mla_attention.py). # --linear-backend b12x forces the B12xMxFp4LinearKernel - "MXFP4 linear # through the native B12X SM120 dense GEMM" - the right path on GB10, # verified per component: is_device_capability_family(120)=True, b12x # blockscaled.is_supported()=True, and the cute-dsl input quantize # (flashinfer_mxfp4_quantize) works on capability 121; only the cute-dsl # mm_fp4 GEMM is unsupported there. Boot log to look for: # "Using B12xMxFp4LinearKernel for MXFP4 GEMM" # (The lab's GLM-5.1 runbook describes the same kernel family for the # quant_method=mxfp4 ingestion path - this checkpoint goes through the # compressed-tensors path, which is why --moe-backend was the wrong lever.) # First attempt: b12x (the native SM120 GEMM) - correct selection, but the # unconditional b12x warmup (b12x_warmup.py, no config gate) crashes on # this checkpoint's layer shapes during kernel compile: # RuntimeError: Expected source and destination tensors to have the same # rank, but got 3 and 4 (b12x/gemm/blockscaled/_linear.py dense_gemm, # via _apply_b12x_mxfp4_linear on a synthetic zero source) # so the mxfp4 LINEAR layers run on Marlin (weight-only A16 dequant GEMM - # the same family as the MarlinExperts the MoE scheme picked). Slower than # native FP4 for the attention projections, but the MoE experts (the # dominant cost) are Marlin either way. The b12x warmup rank bug is # filed-worthy for the lab (RedHatAI GLM-5.3-MXFP4 on GB10/sm_121a). "--linear-backend", "marlin", # pure I/O loader (kept across every GLM config) "--load-format", "instanttensor", "--block-size", "256", "--max-model-len", "524288", "--max-num-seqs", "8", "--max-num-batched-tokens", "4096", "--enable-chunked-prefill", "--async-scheduling", "--enable-prefix-caching", # Their proven boot: no flashinfer autotune, no CuTe-DSL warmup (the # autotune scratch at 512K shapes does not fit the headroom, 2026-08-28). "--kernel-config", """ '{"enable_cutedsl_warmup":false,"enable_flashinfer_autotune":false}'""", "--language-model-only", # NO --speculative-config on the first boot — see the header. MTP head is # in the checkpoint (num_nextn_predict_layers=1); add mtp k=3 after a # clean boot + bench. "--tool-call-parser", "glm47", "--enable-auto-tool-choice", "--reasoning-parser", "glm45", ] [env] # R31 lock: 16 NCCL channels (their qualified runtime). NCCL_NCHANNELS = "16" HF_HUB_OFFLINE = "1" # RoCEnante (b12x one-shot RoCE all-reduce/all-gather) — default on for r27+ # lanes since the 2026-09-08 A/B (4x DCP4: decode +31..+90%, quality 160 vs # 155; specs/tech-architecture/glm53-recipe-state.md). Needs the CX-7 RoCE # fabric (all of ours); single-node serves skip it silently. VLLM_ENABLE_ROCE_ALLREDUCE = "1" # Compile-OOM guard: first boot JIT-compiles the mxfp8 gemm module with 12 # parallel nvcc jobs (~3 GiB each) behind ~94 GiB of resident weights → # cicc OOM-killed (2026-09-04). flashinfer's run_ninja reads MAX_JOBS. MAX_JOBS = "2" # 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" VLLM_USE_STANDALONE_COMPILE = "1" VLLM_USE_FLASHINFER_SAMPLER = "1" VLLM_USE_BREAKABLE_CUDAGRAPH = "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 = "2" [[extra_mounts]] host = "~/sm121-cache/glm53-jit-121f/b12x" container = "/root/.cache/b12x" # JIT caches persist per-node across serves (was: cold /root/.cache per # container -> ~20 min flashinfer/torch recompile every serve). The host # dirs are shared between lanes of the same arch — each cache # self-namespaces by its engine version key internally. [[extra_mounts]] host = "~/sm121-cache/jit-121f/flashinfer" container = "/root/.cache/flashinfer" [[extra_mounts]] host = "~/sm121-cache/jit-121f/torchinductor" container = "/root/.cache/torchinductor" [[extra_mounts]] host = "~/sm121-cache/jit-121f/vllm" container = "/root/.cache/vllm"