81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
#include "models.h"
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#include <cmath>
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#include <cstring>
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// Kimi-K3 MoonViT-3d, image path.
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// Follows clip_graph_kimik25, but with RMSNorm, no biases, qkv width != n_embd, and a post-norm patchmergerv2 projector.
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// Images only: at t == 1 the temporal pool and the temporal position term vanish.
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ggml_tensor * clip_graph_kimik3::resize_position_embeddings_3d(uint32_t interpolation_mode) {
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ggml_tensor * pos_embd = model.position_embeddings;
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const int height = img.ny() / patch_size;
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const int width = img.nx() / patch_size;
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GGML_ASSERT(pos_embd);
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const int64_t stored_c = pos_embd->ne[0];
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const int64_t orig_w = pos_embd->ne[1];
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const int64_t orig_h = pos_embd->ne[2];
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GGML_ASSERT(stored_c == n_embd);
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if (height == (int) orig_h && width == (int) orig_w) {
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return ggml_cont_2d(ctx0, pos_embd, n_embd, width * height);
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}
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pos_embd = ggml_permute(ctx0, pos_embd, 2, 1, 0, 3);
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pos_embd = ggml_interpolate(ctx0, pos_embd, height, width, n_embd, 1, interpolation_mode);
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pos_embd = ggml_permute(ctx0, pos_embd, 2, 1, 0, 3);
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pos_embd = ggml_cont_2d(ctx0, pos_embd, n_embd, width * height);
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return pos_embd;
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}
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ggml_cgraph * clip_graph_kimik3::build() {
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ggml_tensor * pos_h = ggml_new_tensor_1d(ctx0, GGML_TYPE_I32, n_patches);
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ggml_set_name(pos_h, "pos_h");
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ggml_set_input(pos_h);
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ggml_tensor * pos_w = ggml_new_tensor_1d(ctx0, GGML_TYPE_I32, n_patches);
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ggml_set_name(pos_w, "pos_w");
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ggml_set_input(pos_w);
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ggml_tensor * learned_pos_embd = resize_position_embeddings_3d(GGML_SCALE_MODE_BILINEAR);
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// Q/K are de-interleaved during conversion.
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auto add_pos = [&](ggml_tensor * cur, const clip_layer &) {
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return build_rope_2d(ctx0, cur, pos_w, pos_h, hparams.rope_theta, false);
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};
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ggml_tensor * inp = build_inp();
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inp = ggml_add(ctx0, inp, learned_pos_embd);
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ggml_tensor * cur = build_vit(
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inp, n_patches,
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NORM_TYPE_RMS,
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hparams.ffn_op,
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nullptr,
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add_pos);
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cb(cur, "vit_out", -1);
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{
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const int scale_factor = model.hparams.n_merge;
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cur = build_patch_merge_permute(cur, scale_factor);
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cur = build_ffn(cur,
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model.mm_1_w, nullptr,
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nullptr, nullptr,
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model.mm_2_w, nullptr,
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FFN_GELU,
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-1);
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cb(cur, "proj_mlp_out", -1);
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cur = build_norm(cur, model.mm_post_norm_w, nullptr, NORM_TYPE_RMS, hparams.eps, -1);
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cb(cur, "proj_out", -1);
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}
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ggml_build_forward_expand(gf, cur);
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return gf;
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}
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