diff options
Diffstat (limited to 'llama.cpp/src/models/rwkv6-base.cpp')
| -rw-r--r-- | llama.cpp/src/models/rwkv6-base.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/llama.cpp/src/models/rwkv6-base.cpp b/llama.cpp/src/models/rwkv6-base.cpp new file mode 100644 index 0000000..7beed2d --- /dev/null +++ b/llama.cpp/src/models/rwkv6-base.cpp @@ -0,0 +1,162 @@ +#include "models.h" + +llm_build_rwkv6_base::llm_build_rwkv6_base(const llama_model & model, const llm_graph_params & params) : + llm_graph_context(params), + model(model) {} + +ggml_tensor * llm_build_rwkv6_base::build_rwkv6_channel_mix(const llama_layer * layer, + ggml_tensor * cur, + ggml_tensor * x_prev, + llm_arch arch) const { + ggml_tensor * sx = ggml_sub(ctx0, x_prev, cur); + switch (arch) { + case LLM_ARCH_RWKV6: + { + ggml_tensor * xk = ggml_add(ctx0, ggml_mul(ctx0, sx, layer->channel_mix_lerp_k), cur); + ggml_tensor * xr = ggml_add(ctx0, ggml_mul(ctx0, sx, layer->channel_mix_lerp_r), cur); + + ggml_tensor * r = ggml_sigmoid(ctx0, build_lora_mm(layer->channel_mix_receptance, xr)); + ggml_tensor * k = ggml_sqr(ctx0, ggml_relu(ctx0, build_lora_mm(layer->channel_mix_key, xk))); + cur = ggml_mul(ctx0, r, build_lora_mm(layer->channel_mix_value, k)); + } + break; + default: + GGML_ABORT("fatal error"); + } + return cur; +} + +ggml_tensor * llm_build_rwkv6_base::build_rwkv6_time_mix(llm_graph_input_rs * inp, + ggml_tensor * cur, + ggml_tensor * x_prev, + const llama_ubatch & ubatch, + int il) const { + const auto * mctx_cur = static_cast<const llama_memory_recurrent_context *>(mctx); + + const auto n_tokens = ubatch.n_tokens; + const auto n_seqs = ubatch.n_seqs; + const auto n_seq_tokens = ubatch.n_seq_tokens; + const auto n_embd = hparams.n_embd; + const auto head_size = hparams.wkv_head_size; + const auto n_head = n_embd / head_size; + const auto n_head_kv = hparams.n_head_kv(il); + + const auto kv_head = mctx_cur->get_head(); + + const auto & layer = model.layers[il]; + + bool is_qrwkv = layer.time_mix_first == nullptr; + + ggml_tensor * sx = ggml_sub(ctx0, x_prev, cur); + + sx = ggml_reshape_2d(ctx0, sx, n_embd, n_tokens); + cur = ggml_reshape_2d(ctx0, cur, n_embd, n_tokens); + + ggml_tensor * xxx = ggml_add(ctx0, ggml_mul(ctx0, sx, layer.time_mix_lerp_x), cur); + + xxx = ggml_reshape_4d(ctx0, ggml_tanh(ctx0, ggml_mul_mat(ctx0, layer.time_mix_w1, xxx)), + layer.time_mix_w1->ne[1] / 5, 1, 5, n_tokens); + + xxx = ggml_cont(ctx0, ggml_permute(ctx0, xxx, 0, 1, 3, 2)); + + xxx = ggml_mul_mat( + ctx0, ggml_reshape_4d(ctx0, layer.time_mix_w2, layer.time_mix_w2->ne[0], layer.time_mix_w2->ne[1], 1, 5), xxx); + + ggml_tensor *xw, *xk, *xv, *xr, *xg; + if (layer.time_mix_lerp_fused) { + // fusing these weights makes some performance improvement + sx = ggml_reshape_3d(ctx0, sx, n_embd, 1, n_tokens); + cur = ggml_reshape_3d(ctx0, cur, n_embd, 1, n_tokens); + xxx = ggml_add(ctx0, ggml_mul(ctx0, ggml_add(ctx0, xxx, layer.time_mix_lerp_fused), sx), cur); + xw = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], 0); + xk = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * sizeof(float)); + xv = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * 2 * sizeof(float)); + xr = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * 3 * sizeof(float)); + xg = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * 4 * sizeof(float)); + } else { + // for backward compatibility + xw = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], 0); + xk = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * sizeof(float)); + xv = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * 2 * sizeof(float)); + xr = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * 3 * sizeof(float)); + xg = ggml_view_2d(ctx0, xxx, n_embd, n_tokens, xxx->nb[1], n_embd * n_tokens * 4 * sizeof(float)); + + xw = ggml_add(ctx0, ggml_mul(ctx0, ggml_add(ctx0, xw, layer.time_mix_lerp_w), sx), cur); + xk = ggml_add(ctx0, ggml_mul(ctx0, ggml_add(ctx0, xk, layer.time_mix_lerp_k), sx), cur); + xv = ggml_add(ctx0, ggml_mul(ctx0, ggml_add(ctx0, xv, layer.time_mix_lerp_v), sx), cur); + xr = ggml_add(ctx0, ggml_mul(ctx0, ggml_add(ctx0, xr, layer.time_mix_lerp_r), sx), cur); + xg = ggml_add(ctx0, ggml_mul(ctx0, ggml_add(ctx0, xg, layer.time_mix_lerp_g), sx), cur); + } + ggml_tensor * r = build_lora_mm(layer.time_mix_receptance, xr); + ggml_tensor * k = build_lora_mm(layer.time_mix_key, xk); + ggml_tensor * v = build_lora_mm(layer.time_mix_value, xv); + if (layer.time_mix_receptance_b) { + r = ggml_add(ctx0, r, layer.time_mix_receptance_b); + } + if (layer.time_mix_key_b) { + k = ggml_add(ctx0, k, layer.time_mix_key_b); + } + if (layer.time_mix_value_b) { + v = ggml_add(ctx0, v, layer.time_mix_value_b); + } + ggml_tensor * g = build_lora_mm(layer.time_mix_gate, xg); + if (is_qrwkv) { + g = ggml_sigmoid(ctx0, g); + } else { + g = ggml_silu(ctx0, g); + } + if (n_head_kv != 0 && n_head_kv != n_head) { + GGML_ASSERT(n_head % n_head_kv == 0); + k = ggml_reshape_4d(ctx0, k, head_size, 1, n_head_kv, n_tokens); + v = ggml_reshape_4d(ctx0, v, head_size, 1, n_head_kv, n_tokens); + ggml_tensor * tmp = ggml_new_tensor_4d(ctx0, GGML_TYPE_F32, head_size, n_head / n_head_kv, n_head_kv, n_tokens); + k = ggml_repeat(ctx0, k, tmp); + v = ggml_repeat(ctx0, v, tmp); + } + k = ggml_reshape_3d(ctx0, k, head_size, n_head, n_tokens); + v = ggml_reshape_3d(ctx0, v, head_size, n_head, n_tokens); + r = ggml_reshape_3d(ctx0, r, head_size, n_head, n_tokens); + + ggml_tensor * w = + ggml_mul_mat(ctx0, layer.time_mix_decay_w2, ggml_tanh(ctx0, ggml_mul_mat(ctx0, layer.time_mix_decay_w1, xw))); + + w = ggml_add(ctx0, w, layer.time_mix_decay); + w = ggml_exp(ctx0, ggml_neg(ctx0, ggml_exp(ctx0, w))); + w = ggml_reshape_3d(ctx0, w, head_size, n_head, n_tokens); + + if (is_qrwkv) { + // k = k * (1 - w) + k = ggml_sub(ctx0, k, ggml_mul(ctx0, k, w)); + } + ggml_tensor * wkv_state = build_rs(inp, mctx_cur->get_s_l(il), hparams.n_embd_s(), n_seqs); + + ggml_tensor * wkv_output; + if (is_qrwkv) { + wkv_output = ggml_gated_linear_attn(ctx0, k, v, r, w, wkv_state, pow(head_size, -0.5f)); + } else { + wkv_output = ggml_rwkv_wkv6(ctx0, k, v, r, layer.time_mix_first, w, wkv_state); + } + cur = ggml_view_1d(ctx0, wkv_output, n_embd * n_tokens, 0); + wkv_state = ggml_view_1d(ctx0, wkv_output, n_embd * head_size * n_seqs, n_embd * n_tokens * sizeof(float)); + + ggml_build_forward_expand( + gf, ggml_cpy(ctx0, wkv_state, + ggml_view_1d(ctx0, mctx_cur->get_s_l(il), hparams.n_embd_s() * n_seqs, + hparams.n_embd_s() * kv_head * ggml_element_size(mctx_cur->get_s_l(il))))); + + if (!is_qrwkv) { + // group norm with head_count groups + cur = ggml_reshape_3d(ctx0, cur, n_embd / n_head, n_head, n_tokens); + cur = ggml_norm(ctx0, cur, 64e-5f); + + // Convert back to regular vectors. + cur = ggml_reshape_2d(ctx0, cur, n_embd, n_tokens); + cur = ggml_add(ctx0, ggml_mul(ctx0, cur, layer.time_mix_ln), layer.time_mix_ln_b); + } else { + cur = ggml_reshape_2d(ctx0, cur, n_embd, n_tokens); + } + cur = ggml_mul(ctx0, cur, g); + cur = build_lora_mm(layer.time_mix_output, cur); + + return ggml_reshape_3d(ctx0, cur, n_embd, n_seq_tokens, n_seqs); +} |