What moved—and what did not
- K3 EXL3/MCG: all 288 routed experts'
gate_proj, up_proj, and
down_proj tensors in target layers 3…44 plus checkpoint MTP layer 45.
- 37,152 quantized projections in one target-plus-MTP calibration run.
- Attention, dense MLPs, shared experts, routers, norms, embeddings, vision,
and all other tensors remain native precision.
- The release audit compared 1,618 native
tensors / 18.01 GiB byte-for-byte against source revision
f12e0fe1f6b2ea274c11a569582edfd99d993c5e.
- Packed checkpoint payload: 127.30 GiB across
16 safetensors shards.
Quantization used GPTQModel 0565af7ce20a93df9bbc0e5563d7c6f60916f41a, EXL3 MCG K3, seed 787,
sigma_reg=0.025, automatic output-scale selection, and a fixed 1,426-record
calibration corpus (sha256:4e569625d97865777da92167b8fbf6fabb4ab7adf55baa5d676c81ce8dd95244). Natural GLM router
traffic supplied expert Hessians; the committed recovery contract covers any
expert below the 1,024-route floor. The full error ledger and validation report
ship with the model.
Before upload, the fully materialized checkpoint is loaded directly by the
two-GPU B12x/vLLM recipe with adaptive MTP5 and NVFP4 MLA. Publication is gated
on ordinary generation plus five strict tool-call scenarios. The exact prompts,
expected behavior, actual calls, and raw report ship in
quantization/vllm-prompt-expected-actual.md and
quantization/vllm-tool-eval.json.
Serving
This is intended for the optimized two-GPU GLM-5.3 recipe at
tpurtell/glm-5.3-flash-ext3-4-bit-2x-rtx.
That runtime carries the GLM/EXL3/MTP and B12x ports; this card does not claim
stock-vLLM support.
Huge thanks to Z.ai for GLM-5.3 Flash, Brandon for the earlier K4 quant
and qualification work that helped inform this run, MiaAI-Lab for the nearby
dual-DGX-Spark reference, and the GPTQModel, ExLlamaV3, vLLM, and B12x
contributors.
Audit identity
- Source index:
sha256:e6007bd58fb7e07f9fe69544257ee2713f252ef5855bbf685b48c991d524ef0f
- One-shot plan:
sha256:fdce3c2c0078e27b0fa8bdab92cbd13f6c0ab34fb8d3e836fc56b44afc4ec82c
- Validation:
sha256:625dcdfc8a031506d1406804cc72b7373c600567e076220b756f9504bc0fd284