1#include "models.h"
2
3llm_build_starcoder2::llm_build_starcoder2(const llama_model & model, const llm_graph_params & params) : llm_graph_context(params) {
4 const int64_t n_embd_head = hparams.n_embd_head_v;
5
6 GGML_ASSERT(n_embd_head == hparams.n_embd_head_k);
7 GGML_ASSERT(n_embd_head == hparams.n_rot);
8
9 ggml_tensor * cur;
10 ggml_tensor * inpL;
11
12 inpL = build_inp_embd(model.tok_embd);
13
14 // inp_pos - contains the positions
15 ggml_tensor * inp_pos = build_inp_pos();
16
17 auto * inp_attn = build_attn_inp_kv();
18
19 ggml_tensor * inp_out_ids = build_inp_out_ids();
20
21 for (int il = 0; il < n_layer; ++il) {
22 ggml_tensor * inpSA = inpL;
23
24 // norm
25 cur = build_norm(inpL,
26 model.layers[il].attn_norm, model.layers[il].attn_norm_b,
27 LLM_NORM, il);
28 cb(cur, "attn_norm", il);
29
30 // self-attention
31 {
32 // compute Q and K and RoPE them
33 ggml_tensor * Qcur = build_lora_mm(model.layers[il].wq, cur);
34 cb(Qcur, "Qcur", il);
35 if (model.layers[il].bq) {
36 Qcur = ggml_add(ctx0, Qcur, model.layers[il].bq);
37 cb(Qcur, "Qcur", il);
38 }
39 ggml_tensor * Kcur = build_lora_mm(model.layers[il].wk, cur);
40 cb(Kcur, "Kcur", il);
41 if (model.layers[il].bk) {
42 Kcur = ggml_add(ctx0, Kcur, model.layers[il].bk);
43 cb(Kcur, "Kcur", il);
44 }
45 ggml_tensor * Vcur = build_lora_mm(model.layers[il].wv, cur);
46 cb(Vcur, "Vcur", il);
47 if (model.layers[il].bv) {
48 Vcur = ggml_add(ctx0, Vcur, model.layers[il].bv);
49 cb(Vcur, "Vcur", il);
50 }
51 Qcur = ggml_reshape_3d(ctx0, Qcur, n_embd_head, n_head, n_tokens);
52 Kcur = ggml_reshape_3d(ctx0, Kcur, n_embd_head, n_head_kv, n_tokens);
53 Vcur = ggml_reshape_3d(ctx0, Vcur, n_embd_head, n_head_kv, n_tokens);
54
55 Qcur = ggml_rope_ext(
56 ctx0, Qcur, inp_pos, nullptr,
57 n_rot, rope_type, n_ctx_orig, freq_base, freq_scale,
58 ext_factor, attn_factor, beta_fast, beta_slow
59 );
60
61 Kcur = ggml_rope_ext(
62 ctx0, Kcur, inp_pos, nullptr,
63 n_rot, rope_type, n_ctx_orig, freq_base, freq_scale,
64 ext_factor, attn_factor, beta_fast, beta_slow
65 );
66
67 cb(Qcur, "Qcur", il);
68 cb(Kcur, "Kcur", il);
69 cb(Vcur, "Vcur", il);
70
71 cur = build_attn(inp_attn,
72 model.layers[il].wo, model.layers[il].bo,
73 Qcur, Kcur, Vcur, nullptr, nullptr, nullptr, 1.0f/sqrtf(float(n_embd_head)), il);
74 }
75 if (il == n_layer - 1 && inp_out_ids) {
76 cur = ggml_get_rows(ctx0, cur, inp_out_ids);
77 inpSA = ggml_get_rows(ctx0, inpSA, inp_out_ids);
78 }
79 ggml_tensor * ffn_inp = ggml_add(ctx0, cur, inpSA);
80 cb(ffn_inp, "ffn_inp", il);
81
82 // feed-forward network
83
84 cur = build_norm(ffn_inp,
85 model.layers[il].ffn_norm, model.layers[il].ffn_norm_b,
86 LLM_NORM, il);
87 cb(cur, "ffn_norm", il);
88
89 cur = build_ffn(cur,
90 model.layers[il].ffn_up, model.layers[il].ffn_up_b, NULL,
91 NULL, NULL, NULL,
92 model.layers[il].ffn_down, model.layers[il].ffn_down_b, NULL,
93 NULL,
94 LLM_FFN_GELU, LLM_FFN_SEQ, il);
95 cb(cur, "ffn_out", il);
96
97 cur = ggml_add(ctx0, cur, ffn_inp);
98
99 cur = build_cvec(cur, il);
100 cb(cur, "l_out", il);
101
102 // input for next layer
103 inpL = cur;
104 }
105 cur = inpL;
106
107 cur = build_norm(cur,
108 model.output_norm, model.output_norm_b,
109 LLM_NORM, -1);
110
111 cb(cur, "result_norm", -1);
112 res->t_embd = cur;
113
114 // lm_head
115 cur = build_lora_mm(model.output, cur);
116
117 cb(cur, "result_output", -1);
118 res->t_logits = cur;
119
120 ggml_build_forward_expand(gf, cur);
121}