70 lines
3.1 KiB
Diff
70 lines
3.1 KiB
Diff
From 2f872f294fb6f5c6e8f983b68c40ea656053dd92 Mon Sep 17 00:00:00 2001
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From: Michael Yang <mxyng@pm.me>
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Date: Tue, 23 Jul 2024 14:33:29 -0700
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Subject: [PATCH] llama 3.1 rope scaling
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---
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src/llama.cpp | 14 ++++++++++++--
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1 file changed, 12 insertions(+), 2 deletions(-)
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diff --git a/src/llama.cpp b/src/llama.cpp
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index 8fe51971..a9969df8 100644
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--- a/src/llama.cpp
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+++ b/src/llama.cpp
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@@ -2472,6 +2472,7 @@ struct llama_layer {
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// long rope factors
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struct ggml_tensor * rope_long = nullptr;
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struct ggml_tensor * rope_short = nullptr;
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+ struct ggml_tensor * rope_freqs = nullptr;
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// bitnet scale
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struct ggml_tensor * wq_scale;
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@@ -6143,6 +6144,8 @@ static bool llm_load_tensors(
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layer.ffn_norm = ml.create_tensor(ctx_layer, tn(LLM_TENSOR_FFN_NORM, "weight", i), {n_embd});
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+ layer.rope_freqs = ml.create_tensor(ctx_layer, tn(LLM_TENSOR_ROPE_FREQS, "weight"), { n_embd/n_head/2 }, llama_model_loader::TENSOR_NOT_REQUIRED | (i != 0 ? llama_model_loader::TENSOR_DUPLICATED : 0));
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+
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if (n_expert == 0) {
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layer.ffn_gate = ml.create_tensor(ctx_split, tn(LLM_TENSOR_FFN_GATE, "weight", i), {n_embd, n_ff});
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layer.ffn_down = ml.create_tensor(ctx_split, tn(LLM_TENSOR_FFN_DOWN, "weight", i), { n_ff, n_embd});
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@@ -8620,6 +8623,10 @@ struct llm_build_context {
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// choose long/short freq factors based on the context size
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const auto n_ctx_pre_seq = cparams.n_ctx / cparams.n_seq_max;
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+ if (model.layers[il].rope_freqs != nullptr) {
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+ return model.layers[il].rope_freqs;
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+ }
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+
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if (n_ctx_pre_seq > hparams.n_ctx_orig_yarn) {
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return model.layers[il].rope_long;
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}
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@@ -8814,6 +8821,9 @@ struct llm_build_context {
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// self-attention
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{
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+ // rope freq factors for llama3; may return nullptr for llama2 and other models
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+ struct ggml_tensor * rope_factors = build_rope_factors(il);
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+
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// compute Q and K and RoPE them
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struct ggml_tensor * Qcur = llm_build_lora_mm(lctx, ctx0, model.layers[il].wq, cur);
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cb(Qcur, "Qcur", il);
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@@ -8837,14 +8847,14 @@ struct llm_build_context {
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}
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Qcur = ggml_rope_ext(
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- ctx0, ggml_reshape_3d(ctx0, Qcur, n_embd_head, n_head, n_tokens), inp_pos, nullptr,
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+ ctx0, ggml_reshape_3d(ctx0, Qcur, n_embd_head, n_head, n_tokens), inp_pos, rope_factors,
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n_rot, rope_type, n_ctx_orig, freq_base, freq_scale,
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ext_factor, attn_factor, beta_fast, beta_slow
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);
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cb(Qcur, "Qcur", il);
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Kcur = ggml_rope_ext(
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- ctx0, ggml_reshape_3d(ctx0, Kcur, n_embd_head, n_head_kv, n_tokens), inp_pos, nullptr,
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+ ctx0, ggml_reshape_3d(ctx0, Kcur, n_embd_head, n_head_kv, n_tokens), inp_pos, rope_factors,
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n_rot, rope_type, n_ctx_orig, freq_base, freq_scale,
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ext_factor, attn_factor, beta_fast, beta_slow
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);
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--
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2.45.2
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