[!WARNING]
Experimental — likely broken (renamed to -exp on 2026-08-12). This variant was produced by the cascaded REAM line (REAM160 → REAM128). Cascaded variants later showed severe multi-turn degradation: generation typically collapses from the second request onward. No quality evidence was ever collected for this release. Kept for archival reference only; not recommended for use. A rebuilt line (REAM144 / REAM96, built in a single step from the base model) is in progress.
DeepSeek V4 Flash 0731 REAM128-146B DS4 Q2
This single-file DS4 GGUF was produced directly from the committed REAM128 native checkpoint. It preserves the 43-layer, 128-routed-expert, one-shared-expert, top-k 6 topology.
Runtime requirement: this is a DS4-specific GGUF. Use the patched
WaveCut DS4 fork with dynamic expert-count support. Generic llama.cpp and Transformers loading are not claimed.
Quantization and identity
- Routed gate/up tensors: IQ2_XXS.
- Routed down tensors: Q2_K.
- Attention projections, shared experts, and output: Q8.
- MTP is absent.
- DS4 revision:
6747e7718dd08f00b680d0c16231f2d59ec3747e.
- Native
NATIVE_READY.json SHA-256: 8c32c76316574c75f18b45be69bd3b54c0c547531249b02f424a66485dc4820e.
- Run:
20260810T115212Z.
| Artifact | Bytes | SHA-256 |
|---|
DeepSeek-V4-Flash-0731-REAM128-IQ2XXS-w2Q2K-AProjQ8-SExpQ8-OutQ8-chat-v2-imatrix.gguf | 47,553,155,968 | c209cf78b0fdf8fa0e164061346292299bd06b8c10355aba407dd3411adfd208 |
ream128-imatrix.dat | 225,448,838 | 3e01cbecd975a6b22d24a7f891871bfff1b27b2ca7f3e82749a17cf73fd1309e |
The GGUF contains 1,328 tensors. Its quantization template is pinned to antirez/deepseek-v4-gguf@591165d69ad5d27cf826dcc2cf687549e966f893.
Native REAM and quantization methodology
The native checkpoint was produced by a training-free 160-to-128 expert merge using 3,072 calibration samples of 512 tokens each: 20% code, 10% math, 35% agent/tool, and 35% Russian/Cyrillic. Fresh layerwise saliency statistics, groups, merged experts, router mappings, and activations were computed for REAM128.
The importance matrix in this repository was generated fresh from the committed REAM128 native checkpoint; it was not reused from REAM160. DS4 consumed it in strict iMatrix mode. Conversion was direct from Safetensors to GGUF without an intermediate F16 checkpoint.
Usage
Build or install the patched DS4 fork at the pinned revision, then run:
1./ds4 \
2 -m ./DeepSeek-V4-Flash-0731-REAM128-IQ2XXS-w2Q2K-AProjQ8-SExpQ8-OutQ8-chat-v2-imatrix.gguf \
3 --nothink
Remove --nothink only when intentionally enabling thinking with a suitable completion budget. Add backend, offload, context, and memory options for the installed CUDA or Metal build. The 47,553,155,968-byte model file alone is about 44.29 GiB; actual runtime memory also includes metadata, buffers, KV cache, and backend overhead.
Validation and integrity
- Exact native lineage, GGUF byte size, tensor count, GGUF SHA-256, and iMatrix SHA-256 were verified and committed.
- Comparative heldout PPL/NLL: not measured for this cascade.
- Semantic continuation suite: not run for this cascade.
- CUDA and Metal throughput: not benchmarked for this cascade.
The integrity checks prove artifact identity; they are not a quality or performance result.
Limitations
- Do not reuse the measured quality or performance numbers from the REAM160 GGUF card.
- Standard llama.cpp compatibility is not claimed; the 128-expert topology requires the patched DS4 runtime.
- Memory and throughput depend on backend, offload, context length, batch size, and host I/O.
License
MIT License, following the source checkpoint.
