OpenMOSS-Team/Qwen2.5-7B-base-mla-topk8-rank512

Qwen2.5-7B-base-mla-topk8-rank512

This repository contains the attention-only incremental weights for an MLAfication conversion of Qwen/Qwen2.5-7B. It is not a standalone full-model checkpoint.

Variant

The training run froze every parameter outside attention and also froze each attention output projection. The uploaded delta therefore contains exactly the parameters matching "attn" in name and "o_proj" not in name; embeddings, MLP, normalization outside attention, output projections, and LM head are omitted. Frozen tensors from the historical full checkpoint were verified exactly against the pinned base weights after casting the base tensors to the checkpoint dtype.

Loading

Use the MLAfication implementation to instantiate the MLAfication architecture from the pinned base model, then load model.safetensors with strict=False:

from safetensors.torch import load_file

delta = load_file("model.safetensors")
load_result = mla_model.load_state_dict(delta, strict=False)

The architecture must be patched before loading the delta. Loading this repository directly with vanilla AutoModelForCausalLM.from_pretrained(...) is not supported. config.json contains the layer-wise RoPE indices and sanitized MLAfication metadata.

Files

• —model.safetensors: attention-only delta weights
• —config.json: base architecture, RoPE indices, and MLAfication metadata
• —manifest.json: provenance, byte size, tensor count, and checksum

License

The weights follow the Apache 2.0 license of the Qwen2.5 base model.