Lumpiasty/llama.cpp
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hparams : refactor hparams.n_layer (#24060)

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* hparams : refactor hparams.n_layer

* cont : remove `n_layer_kv()`, use n_layer_all instead

* cont : type consistency

* pi : update SYSTEM.md

* models : fix Step3.5 MTP

* cont : remove duplicate switch cases

* cont : explicitly set `false` to extra layers for `is_swa` and `is_recr`

* cont : fix nextn layer count handling

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

---------

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
This commit is contained in:
Georgi Gerganov
2026-06-05 11:09:36 +03:00
committed by GitHub
co-authored by Sigbjørn Skjæret
parent 3ecfb150a4
commit 7acb4e8cd2
129 changed files with 412 additions and 431 deletions
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src/llama-hparams.h
+8 -9
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@@ -48,12 +48,15 @@ struct llama_hparams {
uint32_t n_ctx_train; // context size the model was trained on
uint32_t n_embd;
uint32_t n_layer;
int32_t n_layer_kv_from_start = -1; // if non-negative, the first n_layer_kv_from_start layers have KV cache
uint32_t n_layer_all;
uint32_t n_layer_nextn = 0;
uint32_t n_expert = 0;
uint32_t n_expert_used = 0;
uint32_t n_rel_attn_bkts = 0;
// TODO: this needs to be reworked
int32_t n_layer_kv_from_start = -1; // if non-negative, the first n_layer_kv_from_start layers have KV cache
// different head size for full_attention and SWA layers
uint32_t n_embd_head_k_full; // dimension of keys (d_k). d_q is assumed to be the same, but there are n_head q heads, and only n_head_kv k-v heads
uint32_t n_embd_head_v_full; // dimension of values (d_v) aka n_embd_head
@@ -96,9 +99,6 @@ struct llama_hparams {
uint32_t expert_gating_func = LLAMA_EXPERT_GATING_FUNC_TYPE_NONE;
uint32_t moe_every_n_layers = 0;
uint32_t moe_latent_size = 0;
uint32_t nextn_predict_layers = 0;
bool kv_only_nextn = false; // if true, only the last nextn_predict_layers blocks have a KV cache (MTP head arches)
float f_norm_eps;
float f_norm_rms_eps;
@@ -272,8 +272,7 @@ struct llama_hparams {
bool is_swa(uint32_t il) const;
// TODO: implement
//void set_recr_pattern(uint32_t n_pattern, bool dense_first = false);
void set_recr_pattern(uint32_t n_pattern, bool dense_first = false);
// whether or not the given layer is recurrent (for hybrid models)
bool is_recr(uint32_t il) const;
@@ -329,8 +328,8 @@ struct llama_hparams {
bool has_kv(uint32_t il) const;
// number of layers for which has_kv() returns true
uint32_t n_layer_kv() const;
// number of effective layers (excludes nextn layers)
uint32_t n_layer() const;
// note that this function uses different SWA parameters from those in the hparams
// note: inlined on purpose for performance reasons