What is included
- 13 transformer layers: 3 dense and 10 MoE layers, plus the packaged MTP
expert layer.
- Hidden size 1,024; MoE intermediate size 512; 256 routed experts per MoE/MTP
layer.
- 2,816 QSRT experts in 11 canonical atom files.
- SQG-XOR-Cheb-T12 E4M3 codebook, three-bit trellis payload, fixed P24/P33 pair
records, and physical atom rotation.
- Canonical
qsrt_atoms_v1 storage with complete per-file SHA-256 manifests
and a fail-closed QSRT_COMPLETE.json marker.
- W4A16 prefill/reference execution and W4A8 decode execution through B12X.
The expert allocation selected by the frozen calibration evidence is recorded
in each qsrt-layer-*.json sidecar. Aggregate allocation counts are:
Table with columns: Allocation code, Experts| Allocation code | Experts |
|---|
R13=0,R2=0 | 2,797 |
R13=0,R2=1 | 1 |
R13=1,R2=0 | 11 |
R13=1,R2=1 | 5 |
R13=2,R2=1 | 1 |
R13=2,R2=2 | 1 |
Size and memory
The apples-to-apples baseline is the complete BF16 tensor set. All three rows
below cover the same 5,040,368,896 logical parameters and count only
Safetensors files; effective bpw is stored bytes times eight divided by that
parameter count, so it includes container and quantization metadata.
Table with columns: Tensor payload, Bytes, GiB, Effective bpw, Relative to BF16| Tensor payload | Bytes | GiB | Effective bpw | Relative to BF16 |
|---|
| BF16 source | 10,081,800,232 | 9.3894 | 16.0017 | baseline |
| Prior SIQ mixed | 3,102,116,152 | 2.8891 | 4.9236 | 69.23% smaller |
| This QSRT model | 2,909,352,104 | 2.7095 | 4.6177 | 71.14% smaller |
The whole-model rates include 611,183,872 non-routed parameters retained in
BF16. Isolating the 4,429,185,024 routed-expert weights gives:
Table with columns: Routed-expert format, Stored bytes, Nominal path bpw, Effective stored bpw| Routed-expert format | Stored bytes | Nominal path bpw | Effective stored bpw |
|---|
| BF16 | 8,858,370,048 | 16.0000 | 16.0000 |
| Prior SIQ mixed (1,856 K3 / 960 K4 experts) | 1,879,717,272 | 3.3409 | 3.3951 |
| QSRT P24/P33 atoms | 1,686,953,224 | 3.0000 | 3.0470 |
QSRT is therefore 10.25% smaller than SIQ on the routed-expert component and
6.21% smaller on the compared tensor files. Package-level totals are not used
for the comparison because tokenizer, card, and optional evaluation files are
not model weights. The previous card's 7,593,020,594-byte BF16 row was not the
complete BF16 tensor set and has been removed.
W4A8 and W4A16 use the same stored weights, so their loader weight storage is
identical; W4A8 changes the decode execution path, not the checkpoint size.
Hugging Face repository-size audit
The Hugging Face model API with blobs=true reported the following immutable
snapshot on 2026-08-08. Repository bytes sums every sibling's reported size;
Safetensors bytes sums only *.safetensors. These are observed repository
payloads, not parameter-count estimates.
Table with columns: Artifact, Revision, Repository bytes, Safetensors bytes| Artifact | Revision | Repository bytes | Safetensors bytes |
|---|
| Fruit Instruct BF16 | 678954f6 | 10,102,017,674 | 10,081,800,232 |
| Fruit Instruct prior mixed SIQ | 48452ef3 | 3,122,333,594 | 3,102,116,152 |
|
The three full-model rows ground real download/storage scale only. They are not
used for Fruit percentage claims because Fruit has 5.04B parameters while the
production model has roughly 754B. The apples-to-apples Fruit tensor
comparison above remains the codec-size result.
Adjacent-rate evidence
evaluation/fruit-uniform-rate-sweep.json re-encodes the same authenticated expert sample at uniform
K2, K3, and K4, with fresh per-endpoint FP16 scales. It measured
16 of 19 predeclared assignments; 3 lacked
the minimum routed calibration support and were skipped rather than imputed.
These are pre-layer-deduplication expert-local endpoints, not package sizes.
Table with columns: Endpoint, Mean bpw, Mean bytes/expert, Weight NMSE, Captured-H NMSE, Validation routed NMSE| Endpoint | Mean bpw | Mean bytes/expert | Weight NMSE | Captured-H NMSE | Validation routed NMSE |
|---|
| K2 | 2.0469 | 402,432 | 0.082239 | 0.023648 | 0.055370 |
| K3 | 3.0469 | 599,040 | 0.020829 | 0.005855 | 0.013015 |
| K4 | 4.0469 |
Relative to K3, K2 is 3.948x /
4.039x /
4.254x on weight,
captured-H, and validation-routed NMSE. K4 is
0.257x /
0.255x /
0.251x on the same metrics.
Evidence boundary
The completion seal covers every top-level package file and every regular file
under evaluation/. The sealed adjacent-rate report measures local routed
expert reconstruction on authenticated, document-disjoint calibration rows.
It does not establish chat quality, broad downstream task quality, or general
serving throughput.
Reproducible runtime
The runtime is pinned to the reviewed commits below:
The derived image starts from the content-addressed public base
docker.io/voipmonitor/vllm@sha256:3230c25ff95f8678a8eeb52a463f0d3b9f96f6ad550418cc51ea12177a55b41c
hard-coded by Dockerfile.fruit-qsrt. It installs the exact B12X checkout,
copies the base's compiled vLLM extensions into the reviewed source tree, and
seals the exact runtime package bytes. MODEL_REVISION resolves the Hub branch
once; hf download then uses the resulting immutable commit SHA.
git clone https://github.com/malaiwah/vllm-voipmonitor.git vllm-fruit
git -C vllm-fruit checkout --detach 056c3e1f46c1870378d266f4ee5fa9049309bc04
docker build \
--file vllm-fruit/Dockerfile.fruit-qsrt \
--build-arg VLLM_REVISION=056c3e1f46c1870378d266f4ee5fa9049309bc04 \
--build-arg B12X_REVISION=84df431be79d6897fb3872516a7da39139e4905b \
--tag fruit-qsrt:056c3e1f46c1870378d266f4ee5fa9049309bc04 \
vllm-fruit
MODEL_REVISION="$(
curl -fsSL https://huggingface.co/api/models/malaiwah/GLM-5.2-QSRT-Fruit-Instruct-exact \
| python3 -c 'import json,sys; print(json.load(sys.stdin)["sha"])'
)"
MODEL_DIR="Fruit-QSRT-${MODEL_REVISION}"
test ! -e "${MODEL_DIR}"
hf download malaiwah/GLM-5.2-QSRT-Fruit-Instruct-exact \
--revision "${MODEL_REVISION}" \
--local-dir "${MODEL_DIR}"
docker run --rm --gpus '"device=0"' --shm-size=16g \
--read-only \
--tmpfs /tmp:rw,exec,nosuid,size=8g \
--tmpfs /cache:rw,exec,nosuid,size=16g \
--tmpfs /root/.cache:rw,nosuid,size=1g \
--publish 8000:8000 \
--volume "$PWD/${MODEL_DIR}:/model:ro" \
--env MODEL=/model \
fruit-qsrt:056c3e1f46c1870378d266f4ee5fa9049309bc04
The qualified path is SM120 with CUDA 13.2.1 and PyTorch 2.12.0+cu132 in the
content-addressed base, plus nvidia-cutlass-dsl == 4.6.0 in the derived image.
The launcher rejects extra vLLM arguments and any value other than TP1,
max_num_seqs=1, max_model_len=4096, and
max_num_batched_tokens=4096 before importing the GPU runtime. The current
B12X sparse-prefill backend requires single-request prefill chunks.
The runtime manifest is an integrity check rooted in the trusted immutable
image, not an independent signature. The build host and container operator
remain trusted. Run the container read-only, keep writable tmpfs mounts outside
/opt/vllm-fruit, /opt/b12x-fruit, and /opt/fruit-runtime, and mount the
authenticated model read-only as shown above.
W4A16 is used for prefill and any row count above the W4A8 decode ceiling. W4A8
is selected for decode-sized batches of at most 16 rows. Unsupported shapes,
activation modes, metadata, or incomplete manifests fail closed.
Provenance and integrity
- Authenticated BF16 source:
malaiwah/GLM-5.2-SIQ-Fruit-Instruct-bf16
at immutable revision 678954f65e056a0f508e21eeb9251c655bb9463f.
- Authenticated source manifest (
safetensors_manifest) SHA-256:
8f23aed5e9b12000ed103a76da772a20730ca53ab7e352d6cb94da2709165245.
- Calibration capture ID:
24b290abaddb9eff8d7328a2a22f3c33bb7f6f45b77692393b3549ba0fded0a2.
- Calibration manifest SHA-256:
be944c8dfc5b550319d26bc2899f0d2ea3f4ca81275ba53034f0cc8ef7b4e9c5.
- The encoder authenticated 256 documents /
46,223 tokens from disjoint fit, confirmation, and validation
splits.
- Full encoding: 2,816 experts, 1,347.09 GPU-seconds,
2.550 GiB peak CUDA allocation.
MANIFEST.sha256, , ,
, and bind the published
package to the source and encoder fingerprints.
Known limitations
- Not assistant-quality. A matched TP1/eager four-prompt protocol on 2026-08-08 found that both BF16 and QSRT missed an exact-string instruction, returned
84 for 84 * 3 / 2 instead of 126, and produced incoherent Chinese text; both honored a short named-system instruction. This is protocol evidence, not a representative benchmark, and no downstream task-quality claim is made.
- Narrow performance result. On one RTX 5090, three warmed eager TP1 requests generating 256 tokens measured median decode rates of 63.54 tokens/s for QSRT and 77.45 tokens/s for matched BF16. Model loading used 2.7 GiB versus 8.77 GiB. This
max_num_seqs=1 protocol is not a general throughput benchmark.
- TP2 atom ownership is unit-tested, but only TP1 physical serving has been
qualified for this Fruit package.
- The current sparse-attention prefill backend requires
max_num_seqs=1.
- This release qualifies the QSRT codec, storage, loader, and kernels. It does
not establish broad downstream task quality.
License
The packaged model files are MIT, matching the authenticated Fruit BF16 source
license. B12X and vLLM are Apache-2.0. KQuant is not redistributed in this
model repository and remains subject to its upstream repository licensing.