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model : disable SWA for Phi models (#13676)

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* model : disable SWA for Phi models

ggml-ci

* model : update warning message

* model : print warning only if n_swa > 0

* model : fix typo
This commit is contained in:
Georgi Gerganov
2025-05-21 13:09:21 +03:00
committed by GitHub
parent 33983057d0
commit b44890df2e
2 changed files with 30 additions and 42 deletions
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65
src/llama-model.cpp
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@ -853,43 +853,16 @@ void llama_model::load_hparams(llama_model_loader & ml) {
default: type = LLM_TYPE_UNKNOWN;
}
// for backward compatibility ; see: https://github.com/ggerganov/llama.cpp/pull/8931
if ((hparams.n_layer == 32 || hparams.n_layer == 40) && hparams.n_ctx_train == 4096) {
// default value for Phi-3-mini-4k-instruct and Phi-3-medium-4k-instruct
LLAMA_LOG_WARN("%s: assuming n_swa = 2047 for Phi-3-mini-4k-instruct and Phi-3-medium-4k-instruct\n", __func__);
const bool found_swa = ml.get_key(LLM_KV_ATTENTION_SLIDING_WINDOW, hparams.n_swa, false);
hparams.swa_type = LLAMA_SWA_TYPE_STANDARD;
hparams.n_swa = 2047;
} else if (hparams.n_layer == 32 && hparams.n_head_kv(0) == 32 && hparams.n_ctx_train == 131072) {
// default value for Phi-3-mini-128k-instruct
LLAMA_LOG_WARN("%s: assuming no SWA for Phi-3-mini-128k-instruct\n", __func__);
if (found_swa && hparams.n_swa > 0) {
LLAMA_LOG_WARN("%s: Phi SWA is currently disabled - results might be suboptimal for some models (see %s)\n",
__func__, "https://github.com/ggml-org/llama.cpp/pull/13676");
// TODO: fix conversion scripts to correctly populate `n_swa` and `n_swa_pattern`
hparams.swa_type = LLAMA_SWA_TYPE_NONE;
hparams.n_swa = hparams.n_ctx_train;
hparams.n_swa_pattern = 1;
} else if (hparams.n_layer == 40 && hparams.n_ctx_train == 131072) {
// default value for Phi-3-medium-128k-instruct
LLAMA_LOG_WARN("%s: assuming no SWA for Phi-3-medium-128k-instruct\n", __func__);
hparams.swa_type = LLAMA_SWA_TYPE_NONE;
hparams.n_swa = hparams.n_ctx_train;
hparams.n_swa_pattern = 1;
}
bool found_swa = ml.get_key(LLM_KV_ATTENTION_SLIDING_WINDOW, hparams.n_swa, false);
if (!found_swa && hparams.n_swa == 0) {
throw std::runtime_error("invalid value for sliding_window");
}
if (hparams.n_swa > hparams.n_ctx_train) {
LLAMA_LOG_WARN("%s: unexpected n_swa: %d >= %d, disabling SWA\n", __func__, hparams.n_swa, hparams.n_ctx_train);
hparams.swa_type = LLAMA_SWA_TYPE_NONE;
hparams.n_swa = hparams.n_ctx_train;
hparams.n_swa = 0;
hparams.n_swa_pattern = 1;
}
} break;
@ -7368,8 +7341,9 @@ struct llm_build_phi2 : public llm_graph_context {
}
};
struct llm_build_phi3_iswa : public llm_graph_context {
llm_build_phi3_iswa(const llama_model & model, const llm_graph_params & params, ggml_cgraph * gf) : llm_graph_context(params) {
template<bool iswa>
struct llm_build_phi3 : public llm_graph_context {
llm_build_phi3(const llama_model & model, const llm_graph_params & params, ggml_cgraph * gf) : llm_graph_context(params) {
const int64_t n_embd_head = hparams.n_embd_head_v;
const int64_t n_embd_gqa = hparams.n_embd_v_gqa();
@ -7383,7 +7357,14 @@ struct llm_build_phi3_iswa : public llm_graph_context {
// inp_pos - contains the positions
ggml_tensor * inp_pos = build_inp_pos();
auto * inp_attn = build_attn_inp_kv_unified_iswa();
using inp_attn_type = std::conditional_t<iswa, llm_graph_input_attn_kv_unified_iswa, llm_graph_input_attn_kv_unified>;
inp_attn_type * inp_attn = nullptr;
if constexpr (iswa) {
inp_attn = build_attn_inp_kv_unified_iswa();
} else {
inp_attn = build_attn_inp_kv_unified();
}
for (int il = 0; il < n_layer; ++il) {
auto * residual = inpL;
@ -13232,7 +13213,9 @@ llama_memory_i * llama_model::create_memory(const llama_memory_params & params,
LLAMA_LOG_DEBUG("%s: n_ctx = %u (padded)\n", __func__, cparams.n_ctx);
if (hparams.n_swa > 0) {
if (hparams.swa_type != LLAMA_SWA_TYPE_NONE) {
GGML_ASSERT(hparams.n_swa_pattern != 1);
res = new llama_kv_cache_unified_iswa(
*this,
params.type_k,
@ -13245,6 +13228,8 @@ llama_memory_i * llama_model::create_memory(const llama_memory_params & params,
cparams.n_batch,
padding);
} else {
GGML_ASSERT(hparams.n_swa_pattern == 1);
res = new llama_kv_cache_unified(
*this,
nullptr,
@ -13353,7 +13338,11 @@ llm_graph_result_ptr llama_model::build_graph(
case LLM_ARCH_PHI3:
case LLM_ARCH_PHIMOE:
{
llm = std::make_unique<llm_build_phi3_iswa>(*this, params, gf);
if (hparams.swa_type != LLAMA_SWA_TYPE_NONE) {
llm = std::make_unique<llm_build_phi3<true>> (*this, params, gf);
} else {
llm = std::make_unique<llm_build_phi3<false>>(*this, params, gf);
}
} break;
case LLM_ARCH_PLAMO:
{