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Diffstat (limited to 'llama.cpp/src/models/lfm2.cpp')
| -rw-r--r-- | llama.cpp/src/models/lfm2.cpp | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/llama.cpp/src/models/lfm2.cpp b/llama.cpp/src/models/lfm2.cpp new file mode 100644 index 0000000..7f805d7 --- /dev/null +++ b/llama.cpp/src/models/lfm2.cpp @@ -0,0 +1,175 @@ +#include "models.h" + +#include "../llama-memory-hybrid.h" + + +llm_build_lfm2::llm_build_lfm2(const llama_model & model, const llm_graph_params & params) : + llm_graph_context(params), + model(model) { + ggml_tensor * cur = build_inp_embd(model.tok_embd); + cb(cur, "model.embed_tokens", -1); + + ggml_build_forward_expand(gf, cur); + + ggml_tensor * inp_pos = build_inp_pos(); + auto * inp_hybrid = build_inp_mem_hybrid(); + ggml_tensor * inp_out_ids = build_inp_out_ids(); + + for (int il = 0; il < n_layer; ++il) { + const bool is_moe_layer = il >= static_cast<int>(hparams.n_layer_dense_lead); + + auto * prev_cur = cur; + cur = build_norm(cur, model.layers[il].attn_norm, NULL, LLM_NORM_RMS, il); + cb(cur, "model.layers.{}.operator_norm", il); + + cur = hparams.is_recurrent(il) ? build_shortconv_block(cur, inp_hybrid->get_recr(), il) : + build_attn_block(cur, inp_pos, inp_hybrid->get_attn(), il); + + if (il == n_layer - 1 && inp_out_ids) { + cur = ggml_get_rows(ctx0, cur, inp_out_ids); + prev_cur = ggml_get_rows(ctx0, prev_cur, inp_out_ids); + } + + cur = ggml_add(ctx0, prev_cur, cur); + + auto * ffn_norm_out = build_norm(cur, model.layers[il].ffn_norm, NULL, LLM_NORM_RMS, il); + cb(ffn_norm_out, "model.layers.{}.ffn_norm", il); + + ggml_tensor * ffn_out = + is_moe_layer ? build_moe_feed_forward(ffn_norm_out, il) : build_dense_feed_forward(ffn_norm_out, il); + cb(ffn_norm_out, "model.layers.{}.ffn_out", il); + + cur = ggml_add(ctx0, cur, ffn_out); + } + + cur = build_norm(cur, model.output_norm, NULL, LLM_NORM_RMS, -1); + cb(cur, "result_norm", -1); + res->t_embd = cur; + + cur = build_lora_mm(model.output, cur); + cb(cur, "result_output", -1); + + res->t_logits = cur; + + ggml_build_forward_expand(gf, cur); +} + +ggml_tensor * llm_build_lfm2::build_moe_feed_forward(ggml_tensor * cur, int il) const { + return build_moe_ffn(cur, + model.layers[il].ffn_gate_inp, model.layers[il].ffn_up_exps, + model.layers[il].ffn_gate_exps, model.layers[il].ffn_down_exps, + model.layers[il].ffn_exp_probs_b, n_expert, n_expert_used, LLM_FFN_SILU, true, false, 0.0, + static_cast<llama_expert_gating_func_type>(hparams.expert_gating_func), il); +} + +ggml_tensor * llm_build_lfm2::build_dense_feed_forward(ggml_tensor * cur, int il) const { + GGML_ASSERT(!model.layers[il].ffn_up_b); + GGML_ASSERT(!model.layers[il].ffn_gate_b); + GGML_ASSERT(!model.layers[il].ffn_down_b); + return build_ffn(cur, + model.layers[il].ffn_up, NULL, NULL, + model.layers[il].ffn_gate, NULL, NULL, + model.layers[il].ffn_down, NULL, NULL, + NULL, LLM_FFN_SILU, LLM_FFN_PAR, il); +} + +ggml_tensor * llm_build_lfm2::build_attn_block(ggml_tensor * cur, + ggml_tensor * inp_pos, + llm_graph_input_attn_kv * inp_attn, + int il) const { + GGML_ASSERT(hparams.n_embd_v_gqa(il) == hparams.n_embd_k_gqa(il)); + const auto n_embd_head = hparams.n_embd_head_v; + const auto n_head_kv = hparams.n_head_kv(il); + + auto * q = build_lora_mm(model.layers[il].wq, cur); + cb(q, "model.layers.{}.self_attn.q_proj", il); + auto * k = build_lora_mm(model.layers[il].wk, cur); + cb(k, "model.layers.{}.self_attn.k_proj", il); + auto * v = build_lora_mm(model.layers[il].wv, cur); + cb(v, "model.layers.{}.self_attn.v_proj", il); + + q = ggml_reshape_3d(ctx0, q, n_embd_head, n_head, n_tokens); + k = ggml_reshape_3d(ctx0, k, n_embd_head, n_head_kv, n_tokens); + v = ggml_reshape_3d(ctx0, v, n_embd_head, n_head_kv, n_tokens); + + // qk norm + q = build_norm(q, model.layers[il].attn_q_norm, NULL, LLM_NORM_RMS, il); + cb(q, "model.layers.{}.self_attn.q_layernorm", il); + k = build_norm(k, model.layers[il].attn_k_norm, NULL, LLM_NORM_RMS, il); + cb(k, "model.layers.{}.self_attn.k_layernorm", il); + + // RoPE + q = ggml_rope_ext(ctx0, q, inp_pos, nullptr, n_rot, rope_type, n_ctx_orig, freq_base, freq_scale, ext_factor, + attn_factor, beta_fast, beta_slow); + k = ggml_rope_ext(ctx0, k, inp_pos, nullptr, n_rot, rope_type, n_ctx_orig, freq_base, freq_scale, ext_factor, + attn_factor, beta_fast, beta_slow); + + cur = build_attn(inp_attn, + model.layers[il].wo, NULL, + q, k, v, nullptr, nullptr, nullptr, 1.0f / sqrtf(float(n_embd_head)), il); + + cb(cur, "model.layers.{}.self_attn.out_proj", il); + + return cur; +} + +ggml_tensor * llm_build_lfm2::build_shortconv_block(ggml_tensor * cur, llm_graph_input_rs * inp_recr, int il) { + const auto * mctx_cur = static_cast<const llama_memory_hybrid_context *>(mctx)->get_recr(); + const uint32_t kv_head = mctx_cur->get_head(); + const int64_t n_seq_tokens = ubatch.n_seq_tokens; + const int64_t n_seqs = ubatch.n_seqs; + GGML_ASSERT(n_seqs != 0); + GGML_ASSERT(ubatch.equal_seqs()); + GGML_ASSERT(ubatch.n_tokens == n_seq_tokens * n_seqs); + + GGML_ASSERT(hparams.n_shortconv_l_cache > 1); + const uint32_t d_conv = hparams.n_shortconv_l_cache - 1; + + // {n_embd, n_tokens} => {n_embd, n_seq_tokens, n_seqs} + cur = ggml_reshape_3d(ctx0, cur, cur->ne[0], n_seq_tokens, n_seqs); + + auto * bcx = build_lora_mm(model.layers[il].shortconv.in_proj, cur); + cb(bcx, "model.layers.{}.conv.in_proj", il); + + constexpr auto n_chunks = 3; + GGML_ASSERT(bcx->ne[0] % n_chunks == 0); + const auto chunk_size = bcx->ne[0] / n_chunks; + auto * b = ggml_view_3d(ctx0, bcx, chunk_size, bcx->ne[1], bcx->ne[2], bcx->nb[1], bcx->nb[2], + 0 * chunk_size * ggml_element_size(bcx)); + auto * c = ggml_view_3d(ctx0, bcx, chunk_size, bcx->ne[1], bcx->ne[2], bcx->nb[1], bcx->nb[2], + 1 * chunk_size * ggml_element_size(bcx)); + auto * x = ggml_view_3d(ctx0, bcx, chunk_size, bcx->ne[1], bcx->ne[2], bcx->nb[1], bcx->nb[2], + 2 * chunk_size * ggml_element_size(bcx)); + + auto * bx = ggml_transpose(ctx0, ggml_mul(ctx0, b, x)); + + // read conv state + auto * conv_state = mctx_cur->get_r_l(il); + auto * conv_rs = build_rs(inp_recr, conv_state, hparams.n_embd_r(), n_seqs); + auto * conv = ggml_reshape_3d(ctx0, conv_rs, d_conv, hparams.n_embd, n_seqs); + + bx = ggml_concat(ctx0, conv, bx, 0); + GGML_ASSERT(bx->ne[0] > conv->ne[0]); + + // last d_conv columns is a new conv state + auto * new_conv = ggml_view_3d(ctx0, bx, conv->ne[0], bx->ne[1], bx->ne[2], bx->nb[1], bx->nb[2], + (bx->ne[0] - conv->ne[0]) * ggml_element_size(bx)); + GGML_ASSERT(ggml_are_same_shape(conv, new_conv)); + + // write new conv conv state + ggml_build_forward_expand(gf, ggml_cpy(ctx0, new_conv, + ggml_view_1d(ctx0, conv_state, ggml_nelements(new_conv), + kv_head * d_conv * n_embd * ggml_element_size(new_conv)))); + + auto * conv_kernel = model.layers[il].shortconv.conv; + auto * conv_out = ggml_ssm_conv(ctx0, bx, conv_kernel); + cb(conv_out, "model.layers.{}.conv.conv", il); + + auto * y = ggml_mul(ctx0, c, conv_out); + y = build_lora_mm(model.layers[il].shortconv.out_proj, y); + cb(y, "model.layers.{}.conv.out_proj", il); + // {n_embd, n_seq_tokens, n_seqs} => {n_embd, n_tokens} + y = ggml_reshape_2d(ctx0, y, y->ne[0], n_seq_tokens * n_seqs); + + return y; +} |