* llama: read the SWA pattern as a period or a per-layer array
Add llama_model_base::load_swa_pattern(), which reads
sliding_window_pattern either as one flag per layer or as a period
expanded by set_swa_pattern(), and use it in every loader that reads
the key as a period.
These loaders silently ignored an array and applied their default
period, although the converters of olmo2, gemma3n and exaone4 write
arrays. The published GGUFs match the defaults, so their outputs do
not change. The loaders that already accepted both forms lose their
duplicated scalar-then-array block, and use their declared default
period when the key is absent.
* model-saver: write the SWA pattern and the MLA SWA geometry
Write sliding_window_pattern as one flag per layer, nextn layers
included, for every model using SWA. The array is never collapsed to
a scalar, since the loaders read a scalar as a period.
Also write the MLA key/value lengths and KV LoRA rank of the SWA
layers, required by dots3note.
This enables the saver for plamo3, gemma3, cohere2, cohere2moe,
olmo2, exaone-moe, afmoe, mimo2, spark2_5, muse-glimmer, mellum,
laguna, granite_swa, dots3note and maple, all passing the bit-exact
roundtrip of test-llama-archs.
* Add arch support for cohere2-MoE
* Removed redundant gating_func checks
* Changed ffn lookup to prefer prefix_dense_intermediate_size
* Renamed arch to cohere2moe
* Removed redundant lmhead check and chat template changes
* Removed lm_head.weight check from modify tensors, load output tensor not required, fallback to token_embd.weight
* Changed to (routed+shared)*0.5 for shared expert combined avg
* fixed sliding_window_pattern issue and pattern
* Fixed transformers crash 'first_k_dense_replace' error
* Remove comment
* Removed cohere2-moe as a tokenizer type and kept as tiny_aya. Renamed North-Mini-Code-1.0.
* Fixed MTP fail, changed to use iSWA
* Fixed remaining todos: cohere2moe renamed, changed swa parsing to use get_key_or_arr, removed extra get_arr use
* Force metadata usage
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
* Remove Cohere2 checkpoint comment
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
* Remove MTP comment
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
* Regenerate cohere2moe tokenizer hash
* Add cohere2moe to Llama Model Saver supported list
* Check for zerobios tensors and add support for Command to use LayerNorm
* Map expert_selection_fn to sigmoid in base.py instead of command.py
* use bools for foundnorm/foundnormrms
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
---------
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
Pascal