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Diffstat (limited to 'llama.cpp/src/models/plamo2.cpp')
| -rw-r--r-- | llama.cpp/src/models/plamo2.cpp | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/llama.cpp/src/models/plamo2.cpp b/llama.cpp/src/models/plamo2.cpp new file mode 100644 index 0000000..31115a0 --- /dev/null +++ b/llama.cpp/src/models/plamo2.cpp @@ -0,0 +1,316 @@ +#include "models.h" + +llm_build_plamo2::llm_build_plamo2(const llama_model & model, const llm_graph_params & params) : + llm_graph_context_mamba(params) { + ggml_tensor * cur; + ggml_tensor * inpL; + + // {n_embd, n_tokens} + inpL = build_inp_embd(model.tok_embd); + cb(inpL, "embedding_output", -1); + + 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) { + ggml_tensor * residual = inpL; + + // ggml_graph_add_node(gf, model.layers[il].attn_norm); + // cb(model.layers[il].attn_norm, "attn_norm", il); + + // pre_mixer_norm + cur = build_norm(inpL, model.layers[il].attn_norm, NULL, LLM_NORM_RMS, il); + + // check if this layer is Mamba or Attention + bool is_mamba_layer = hparams.is_recurrent(il); + + if (is_mamba_layer) { + // PLaMo-2 Mamba layer + cur = build_plamo2_mamba_layer(inp_hybrid->get_recr(), cur, model, ubatch, il); + } else { + // PLaMo-2 Attention layer + cur = build_plamo2_attn_layer(inp_hybrid->get_attn(), inp_pos, cur, model, il); + } + + // post_mixer_norm + cur = build_norm(cur, model.layers[il].attn_post_norm, NULL, LLM_NORM_RMS, il); + cb(cur, "attn_post_norm", il); + + // residual connection + cur = ggml_add(ctx0, cur, residual); + cb(cur, "attn_residual", il); + residual = cur; + + // pre-ffn norm + cur = build_norm(cur, model.layers[il].ffn_norm, NULL, LLM_NORM_RMS, il); + cb(cur, "ffn_pre_norm", il); + + // feed-forward network + cur = build_ffn(cur, + model.layers[il].ffn_up, NULL, NULL, + NULL, NULL, NULL, + model.layers[il].ffn_down, NULL, NULL, + NULL, LLM_FFN_SWIGLU, LLM_FFN_SEQ, il); + cb(cur, "ffn_out", il); + + // post ffn norm + cur = build_norm(cur, model.layers[il].ffn_post_norm, NULL, LLM_NORM_RMS, il); + cb(cur, "ffn_post_norm", il); + + if (il == n_layer - 1 && inp_out_ids) { + cur = ggml_get_rows(ctx0, cur, inp_out_ids); + residual = ggml_get_rows(ctx0, residual, inp_out_ids); + } + + // residual connection + cur = ggml_add(ctx0, cur, residual); + cb(cur, "ffn_residual", il); + + inpL = cur; + } + + cur = inpL; + + // final norm + 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); + + // Explicitly mark as output tensor to ensure proper backend assignment + ggml_set_output(cur); + + res->t_logits = cur; + + ggml_build_forward_expand(gf, cur); +} + +ggml_tensor * llm_build_plamo2::build_plamo2_attn_layer(llm_graph_input_attn_kv * inp, + ggml_tensor * inp_pos, + ggml_tensor * cur, + const llama_model & model, + int il) { + // self-attention + { + // PLaMo-2 uses combined QKV tensor + ggml_tensor * qkv = build_lora_mm(model.layers[il].wqkv, cur); + cb(qkv, "wqkv", il); + + // split QKV tensor into Q, K, V + const int64_t n_embd_head_q = hparams.n_embd_head_k; + const int64_t n_embd_head_k = hparams.n_embd_head_k; + const int64_t n_embd_head_v = hparams.n_embd_head_v; + int32_t n_head = hparams.n_head(il); + int32_t n_head_kv = hparams.n_head_kv(il); + + const int64_t q_offset = 0; + const int64_t k_offset = n_embd_head_q * n_head; + const int64_t v_offset = k_offset + n_embd_head_k * n_head_kv; + + ggml_tensor * Qcur = ggml_view_3d(ctx0, qkv, n_embd_head_q, n_head, n_tokens, n_embd_head_q * sizeof(float), + qkv->nb[1], q_offset * ggml_element_size(qkv)); + ggml_tensor * Kcur = ggml_view_3d(ctx0, qkv, n_embd_head_k, n_head_kv, n_tokens, n_embd_head_k * sizeof(float), + qkv->nb[1], k_offset * ggml_element_size(qkv)); + ggml_tensor * Vcur = ggml_view_3d(ctx0, qkv, n_embd_head_v, n_head_kv, n_tokens, n_embd_head_v * sizeof(float), + qkv->nb[1], v_offset * ggml_element_size(qkv)); + + cb(Qcur, "Qcur", il); + cb(Kcur, "Kcur", il); + cb(Vcur, "Vcur", il); + + Qcur = build_norm(Qcur, model.layers[il].attn_q_norm, NULL, LLM_NORM_RMS, il); + cb(Qcur, "Qcur_normed", il); + + Qcur = ggml_rope_ext(ctx0, Qcur, inp_pos, nullptr, n_rot, rope_type, n_ctx_orig, freq_base, freq_scale, + ext_factor, attn_factor, beta_fast, beta_slow); + + Kcur = build_norm(Kcur, model.layers[il].attn_k_norm, NULL, LLM_NORM_RMS, il); + cb(Kcur, "Kcur_normed", il); + + Kcur = ggml_rope_ext(ctx0, Kcur, 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, + model.layers[il].wo, NULL, + Qcur, Kcur, Vcur, NULL, NULL, NULL, 1.0f / sqrtf(float(n_embd_head_v)), il); + } + + cb(cur, "attn_out", il); + + return cur; +} + +ggml_tensor * llm_build_plamo2::build_plamo2_mamba_layer(llm_graph_input_rs * inp, + ggml_tensor * cur, + const llama_model & model, + const llama_ubatch & ubatch, + int il) { + const auto * mctx_cur = inp->mctx; + + const auto kv_head = mctx_cur->get_head(); + + const int64_t d_conv = hparams.ssm_d_conv; + const int64_t d_inner = hparams.ssm_d_inner; + const int64_t d_state = hparams.ssm_d_state; + const int64_t n_heads = hparams.ssm_dt_rank; + const int64_t head_dim = d_inner / n_heads; + const int64_t n_group = hparams.ssm_n_group; + const int64_t n_seqs = ubatch.n_seqs; + + const int64_t n_seq_tokens = ubatch.n_seq_tokens; + + GGML_ASSERT(n_seqs != 0); + GGML_ASSERT(ubatch.equal_seqs()); + GGML_ASSERT(ubatch.n_tokens == n_seq_tokens * n_seqs); + + ggml_tensor * conv_states_all = mctx_cur->get_r_l(il); + ggml_tensor * ssm_states_all = mctx_cur->get_s_l(il); + + ggml_tensor * conv = build_rs(inp, conv_states_all, hparams.n_embd_r(), n_seqs); + conv = ggml_reshape_3d(ctx0, conv, d_conv - 1, d_inner + 2 * n_group * d_state, n_seqs); + + // {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); + + // in_proj: {n_embd, 2*d_inner} @ {n_embd, n_seq_tokens, n_seqs} => {2*d_inner, n_seq_tokens, n_seqs} + ggml_tensor * zx = build_lora_mm(model.layers[il].ssm_in, cur); + cb(zx, "mamba_in_proj", il); + // {8192, 5, 1, 1} -> {8192, 1, 5, 1} + zx = ggml_permute(ctx0, zx, 0, 2, 1, 3); + zx = ggml_cont_4d(ctx0, zx, head_dim * 2, n_heads, n_seq_tokens, n_seqs); + cb(zx, "mamba_in_proj_out", il); + + // split into z and x + // => {head_dim * n_heads, n_seq_tokens, n_seqs} + ggml_tensor * x = ggml_view_4d(ctx0, zx, head_dim, n_heads, n_seq_tokens, n_seqs, zx->nb[1], zx->nb[2], zx->nb[3], + head_dim * ggml_element_size(zx)); + x = ggml_cont_3d(ctx0, x, head_dim * n_heads, n_seq_tokens, n_seqs); + // x = ggml_permute(ctx0, x, 0, 2, 1, 3); + cb(x, "mamba_x_split", il); + + ggml_tensor * z = + ggml_view_4d(ctx0, zx, head_dim, n_heads, n_seq_tokens, n_seqs, zx->nb[1], zx->nb[2], zx->nb[3], 0); + cb(z, "mamba_z_split", il); + + // conv1d + { + // => {d_conv - 1 + n_seq_tokens, d_inner, n_seqs} + ggml_tensor * conv_x = ggml_concat(ctx0, conv, ggml_transpose(ctx0, x), 0); + cb(conv_x, "mamba_conv1d_input", il); + + // copy last (d_conv - 1) columns back into the state cache + ggml_tensor * last_conv = ggml_view_3d(ctx0, conv_x, d_conv - 1, d_inner, n_seqs, conv_x->nb[1], conv_x->nb[2], + n_seq_tokens * (conv_x->nb[0])); + + ggml_build_forward_expand(gf, ggml_cpy(ctx0, last_conv, + ggml_view_1d(ctx0, conv_states_all, + (d_conv - 1) * (d_inner + 2 * n_group * d_state) * (n_seqs), + kv_head * (d_conv - 1) * (d_inner + 2 * n_group * d_state) * + ggml_element_size(conv_states_all)))); + cb(conv_states_all, "mamba_conv1d_state", il); + + // 1D convolution + x = ggml_ssm_conv(ctx0, conv_x, model.layers[il].ssm_conv1d); + cb(x, "mamba_conv1d", il); + + x = ggml_silu(ctx0, x); + cb(x, "mamba_conv1d_silu", il); + } + + // SSM + { + // bcdt_proj: {d_inner, dt_rank + 2*d_state} @ {d_inner, n_seq_tokens, n_seqs} => {dt_rank + 2*d_state, n_seq_tokens, n_seqs} + ggml_tensor * x_bcdt = build_lora_mm(model.layers[il].ssm_x, x); + cb(x_bcdt, "mamba_bcdt_proj", il); + + // split into dt, B, C + const int64_t dt_dim = std::max(64, int(hparams.n_embd / 16)); + ggml_tensor * B = ggml_view_3d(ctx0, x_bcdt, d_state, n_seq_tokens, n_seqs, x_bcdt->nb[1], x_bcdt->nb[2], 0); + ggml_tensor * C = ggml_view_3d(ctx0, x_bcdt, d_state, n_seq_tokens, n_seqs, x_bcdt->nb[1], x_bcdt->nb[2], + ggml_element_size(x_bcdt) * d_state); + ggml_tensor * dt = ggml_view_3d(ctx0, x_bcdt, dt_dim, n_seq_tokens, n_seqs, x_bcdt->nb[1], x_bcdt->nb[2], + ggml_element_size(x_bcdt) * (2 * d_state)); + cb(B, "mamba_B_raw", il); + cb(C, "mamba_C_raw", il); + cb(dt, "mamba_dt_raw", il); + + // Apply RMS norm to dt, B, C (PLaMo-2 specific) + B = build_norm(B, model.layers[il].ssm_b_norm, NULL, LLM_NORM_RMS, il); + C = build_norm(C, model.layers[il].ssm_c_norm, NULL, LLM_NORM_RMS, il); + dt = build_norm(dt, model.layers[il].ssm_dt_norm, NULL, LLM_NORM_RMS, il); + cb(B, "mamba_B_normed", il); + cb(C, "mamba_C_normed", il); + cb(dt, "mamba_dt_normed", il); + + // dt_proj: {dt_rank, d_inner} @ {dt_rank, n_seq_tokens, n_seqs} => {d_inner, n_seq_tokens, n_seqs} + dt = build_lora_mm(model.layers[il].ssm_dt, dt); + dt = ggml_add(ctx0, dt, model.layers[il].ssm_dt_b); + cb(dt, "mamba_dt_proj", il); + + ggml_tensor * A = ggml_reshape_2d(ctx0, model.layers[il].ssm_a, 1, n_heads); + cb(A, "mamba_A", il); + + x = ggml_view_4d(ctx0, x, head_dim, n_heads, n_seq_tokens, n_seqs, head_dim * ggml_element_size(x), + head_dim * n_heads * ggml_element_size(x), + head_dim * n_heads * n_seq_tokens * ggml_element_size(x), 0); + B = ggml_view_4d(ctx0, B, d_state, 1, n_seq_tokens, n_seqs, d_state * B->nb[0], B->nb[1], B->nb[2], 0); + C = ggml_view_4d(ctx0, C, d_state, 1, n_seq_tokens, n_seqs, d_state * C->nb[0], C->nb[1], C->nb[2], 0); + + // use the states and the indices provided by build_recurrent_state + // (this is necessary in order to properly use the states before they are overwritten, + // while avoiding to make unnecessary copies of the states) + auto get_ssm_rows = [&](ggml_context * ctx, ggml_tensor * states, ggml_tensor * ids) { + ggml_tensor * ssm = ggml_reshape_4d(ctx, states, d_state, head_dim, n_heads, mctx_cur->get_size()); + + // Custom operator to optimize the parallel associative scan + // as described in the Annex D of the Mamba paper. + // => {d_inner, n_seq_tokens, n_seqs} and {d_state, d_inner, n_seqs} + return ggml_ssm_scan(ctx, ssm, x, dt, A, B, C, ids); + }; + + ggml_tensor * y_ssm = build_rs(inp, ssm_states_all, hparams.n_embd_s(), ubatch.n_seqs, get_ssm_rows); + cb(y_ssm, "mamba_ssm_scan", il); + + // store last states + ggml_build_forward_expand( + gf, ggml_cpy( + ctx0, + ggml_view_1d(ctx0, y_ssm, n_heads * head_dim * d_state * n_seqs, + n_heads * head_dim * n_seq_tokens * n_seqs * ggml_element_size(y_ssm)), + ggml_view_1d(ctx0, ssm_states_all, n_heads * head_dim * d_state * n_seqs, + kv_head * n_seqs * n_heads * head_dim * d_state * ggml_element_size(ssm_states_all)))); + cb(ssm_states_all, "mamba_ssm_states", il); + + ggml_tensor * y = ggml_view_4d(ctx0, y_ssm, head_dim, n_heads, n_seq_tokens, n_seqs, + head_dim * ggml_element_size(x), head_dim * n_heads * ggml_element_size(x), + head_dim * n_heads * n_seq_tokens * ggml_element_size(x), 0); + cb(y, "mamba_y_view", il); + + // Add D parameter and apply gating with z + // {d_inner, n_seq_tokens, n_seqs} * {d_inner} => {d_inner, n_seq_tokens, n_seqs} + ggml_tensor * D = ggml_reshape_2d(ctx0, model.layers[il].ssm_d, 1, n_heads); + y = ggml_add(ctx0, y, ggml_mul(ctx0, x, D)); + cb(y, "mamba_y_add_d", il); + + y = ggml_swiglu_split(ctx0, ggml_cont(ctx0, z), y); + cb(y, "mamba_y_swiglu_z", il); + + // out_proj: {d_inner, n_embd} @ {d_inner, n_seq_tokens, n_seqs} => {n_embd, n_seq_tokens, n_seqs} + y = ggml_view_3d(ctx0, y, head_dim * n_heads, n_seq_tokens, n_seqs, y->nb[2], y->nb[3], 0); + cur = build_lora_mm(model.layers[il].ssm_out, y); + cb(cur, "mamba_out_proj", il); + } + + // {n_embd, n_seq_tokens, n_seqs} => {n_embd, n_tokens} + cur = ggml_reshape_2d(ctx0, cur, cur->ne[0], n_seq_tokens * n_seqs); + cb(cur, "mamba_out", il); + + return cur; +} |