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Diffstat (limited to 'llama.cpp/src/models/t5-dec.cpp')
| -rw-r--r-- | llama.cpp/src/models/t5-dec.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/llama.cpp/src/models/t5-dec.cpp b/llama.cpp/src/models/t5-dec.cpp new file mode 100644 index 0000000..297e450 --- /dev/null +++ b/llama.cpp/src/models/t5-dec.cpp @@ -0,0 +1,166 @@ +#include "models.h" + +llm_build_t5_dec::llm_build_t5_dec(const llama_model & model, const llm_graph_params & params) : 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(); + + GGML_ASSERT(n_embd_head == hparams.n_embd_head_k); + + ggml_tensor * cur; + ggml_tensor * inpL; + + inpL = build_inp_embd(model.tok_embd); + + ggml_tensor * embd_enc = build_inp_cross_embd(); + ggml_tensor * pos_bucket_dec = build_inp_pos_bucket_dec(); + + const int64_t n_outputs_enc = embd_enc->ne[1]; + + auto * inp_attn_self = build_attn_inp_kv(); + auto * inp_attn_cross = build_attn_inp_cross(); + + ggml_tensor * inp_out_ids = build_inp_out_ids(); + + const int64_t dec_n_layer = hparams.dec_n_layer; + + for (int il = 0; il < dec_n_layer; ++il) { + ggml_tensor * inpSA = inpL; + + // norm + cur = build_norm(inpL, + model.layers[il].attn_norm, NULL, + LLM_NORM_RMS, il); + cb(cur, "attn_norm", il); + + // self-attention + { + ggml_tensor * Qcur = build_lora_mm(model.layers[il].wq, cur); + cb(Qcur, "Qcur", il); + + ggml_tensor * Kcur = build_lora_mm(model.layers[il].wk, cur); + cb(Kcur, "Kcur", il); + + ggml_tensor * Vcur = build_lora_mm(model.layers[il].wv, cur); + cb(Vcur, "Vcur", il); + + Qcur = ggml_reshape_3d(ctx0, Qcur, n_embd_head, n_head, n_tokens); + Kcur = ggml_reshape_3d(ctx0, Kcur, n_embd_head, n_head_kv, n_tokens); + Vcur = ggml_reshape_3d(ctx0, Vcur, n_embd_head, n_head_kv, n_tokens); + + ggml_tensor * attn_rel_b = model.layers[il].attn_rel_b ? model.layers[il].attn_rel_b : model.layers[0].attn_rel_b; + ggml_tensor * kq_b = build_pos_bias(pos_bucket_dec, attn_rel_b); + + cur = build_attn(inp_attn_self, + model.layers[il].wo, model.layers[il].bo, + Qcur, Kcur, Vcur, kq_b, nullptr, nullptr, 1.0f, il); + cb(cur, "kqv_out", il); + } + cur = ggml_add(ctx0, cur, inpSA); + cb(cur, "cross_inp", il); + + ggml_tensor * inpCA = cur; + + // norm + cur = build_norm(cur, + model.layers[il].attn_norm_cross, NULL, + LLM_NORM_RMS, il); + cb(cur, "attn_norm_cross", il); + + // cross-attention + { + ggml_tensor * Qcur = build_lora_mm(model.layers[il].wq_cross, cur); + cb(Qcur, "Qcur", il); + + ggml_tensor * Kcur = build_lora_mm(model.layers[il].wk_cross, embd_enc); + cb(Kcur, "Kcur", il); + + ggml_tensor * Vcur = build_lora_mm(model.layers[il].wv_cross, embd_enc); + cb(Vcur, "Vcur", il); + + Qcur = ggml_reshape_3d(ctx0, Qcur, n_embd_head, n_head, n_tokens); + Kcur = ggml_reshape_3d(ctx0, Kcur, n_embd_head, n_head_kv, n_outputs_enc); + Vcur = ggml_reshape_3d(ctx0, Vcur, n_embd_head, n_head_kv, n_outputs_enc); + + cur = build_attn(inp_attn_cross, + model.layers[il].wo_cross, nullptr, + Qcur, Kcur, Vcur, nullptr, nullptr, nullptr, 1.0f, il); + cb(cur, "kqv_out", il); + + //ggml_tensor * q = ggml_permute(ctx0, Qcur, 0, 2, 1, 3); + //ggml_tensor * k = ggml_cont(ctx0, ggml_permute(ctx0, Kcur, 0, 2, 1, 3)); + + //ggml_tensor * kq = ggml_mul_mat(ctx0, k, q); + //cb(kq, "kq", il); + + //kq = ggml_soft_max_ext(ctx0, kq, KQ_mask_cross, 1.0f, hparams.f_max_alibi_bias); + //cb(kq, "kq_soft_max_ext", il); + + //ggml_tensor * v = ggml_cont(ctx0, ggml_transpose(ctx0, ggml_reshape_2d(ctx0, Vcur, n_embd_gqa, n_outputs_enc))); + //cb(v, "v", il); + + //ggml_tensor * kqv = ggml_mul_mat(ctx0, ggml_reshape_3d(ctx0, v, n_outputs_enc, n_embd_head, n_head_kv), kq); + //cb(kqv, "kqv", il); + + //ggml_tensor * kqv_merged = ggml_permute(ctx0, kqv, 0, 2, 1, 3); + //cb(kqv_merged, "kqv_merged", il); + + //cur = ggml_cont_2d(ctx0, kqv_merged, n_embd_gqa, n_tokens); + //cb(cur, "kqv_merged_cont", il); + + //ggml_build_forward_expand(gf, cur); + + //cur = build_lora_mm(model.layers[il].wo_cross, cur); + //cb(cur, "kqv_out", il); + } + if (il == dec_n_layer - 1 && inp_out_ids) { + cur = ggml_get_rows(ctx0, cur, inp_out_ids); + inpCA = ggml_get_rows(ctx0, inpCA, inp_out_ids); + } + ggml_tensor * ffn_inp = ggml_add(ctx0, cur, inpCA); + cb(ffn_inp, "ffn_inp", il); + + // feed-forward network + { + cur = build_norm(ffn_inp, + model.layers[il].ffn_norm, NULL, + LLM_NORM_RMS, il); + cb(cur, "ffn_norm", il); + + // T5 uses relu, flan-T5 uses gelu-gated + cur = 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, + model.layers[il].ffn_gate ? LLM_FFN_GELU : LLM_FFN_RELU, + model.layers[il].ffn_gate ? LLM_FFN_PAR : LLM_FFN_SEQ, + il); + cb(cur, "ffn_out", il); + } + cur = ggml_add(ctx0, cur, ffn_inp); + cb(cur, "ffn_out", il); + + cur = build_cvec(cur, il); + cb(cur, "l_out", il); + + // input for next layer + inpL = cur; + } + cur = inpL; + cb(cur, "result_embd", -1); + + cur = build_norm(cur, + model.output_norm, NULL, + LLM_NORM_RMS, -1); + + cb(cur, "result_norm", -1); + res->t_embd = cur; + + // lm_head + cur = build_lora_mm(model.output, cur); + + cb(cur, "result_output", -1); + res->t_logits = cur; + + ggml_build_forward_expand(gf, cur); +} |