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llama.cpp
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llama.cpp/tools/mtmd/models/llava.cpp

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#include "models.h"
// this graph is used by llava, granite and glm
// due to having embedding_stack (used by granite), we cannot reuse build_vit
ggml_cgraph * clip_graph_llava::build() {
const int batch_size = 1;
const int n_pos = n_patches + (model.class_embedding ? 1 : 0);
GGML_ASSERT(n_patches_x == n_patches_y && "only square images supported");
// Calculate the deepest feature layer based on hparams and projector type
int max_feature_layer = n_layer;
{
// Get the index of the second to last layer; this is the default for models that have a llava projector
int il_last = hparams.n_layer - 1;
int deepest_feature_layer = -1;
if (proj_type == PROJECTOR_TYPE_MINICPMV || proj_type == PROJECTOR_TYPE_GLM_EDGE) {
il_last += 1;
}
// If we set explicit vision feature layers, only go up to the deepest one
// NOTE: only used by granite-vision models for now
for (const auto & feature_layer : hparams.vision_feature_layer) {
if (feature_layer > deepest_feature_layer) {
deepest_feature_layer = feature_layer;
}
}
max_feature_layer = deepest_feature_layer < 0 ? il_last : deepest_feature_layer;
}
ggml_tensor * inp = build_inp();
// concat class_embeddings and patch_embeddings
if (model.class_embedding) {
inp = ggml_concat(ctx0, inp, model.class_embedding, 1);
}
ggml_tensor * positions = ggml_new_tensor_1d(ctx0, GGML_TYPE_I32, n_pos);
ggml_set_name(positions, "positions");
ggml_set_input(positions);
inp = ggml_add(ctx0, inp, ggml_get_rows(ctx0, model.position_embeddings, positions));
ggml_tensor * inpL = inp;
// pre-layernorm
if (model.pre_ln_w) {
inpL = build_norm(inpL, model.pre_ln_w, model.pre_ln_b, NORM_TYPE_NORMAL, eps, -1);
cb(inpL, "pre_ln", -1);
}
std::vector<ggml_tensor *> embedding_stack;
const auto & vision_feature_layer = hparams.vision_feature_layer;
// loop over layers
for (int il = 0; il < max_feature_layer; il++) {
auto & layer = model.layers[il];
ggml_tensor * cur = inpL; // inpL = residual, cur = hidden_states
// If this is an embedding feature layer, save the output.
// NOTE: 0 index here refers to the input to the encoder.
if (vision_feature_layer.find(il) != vision_feature_layer.end()) {
embedding_stack.push_back(cur);
}
// layernorm1
cur = build_norm(cur, layer.ln_1_w, layer.ln_1_b, NORM_TYPE_NORMAL, eps, il);
cb(cur, "layer_inp_normed", il);
// self-attention
{
ggml_tensor * Qcur = ggml_mul_mat(ctx0, layer.q_w, cur);
if (layer.q_b) {
Qcur = ggml_add(ctx0, Qcur, layer.q_b);
}
ggml_tensor * Kcur = ggml_mul_mat(ctx0, layer.k_w, cur);
if (layer.k_b) {
Kcur = ggml_add(ctx0, Kcur, layer.k_b);
}
ggml_tensor * Vcur = ggml_mul_mat(ctx0, layer.v_w, cur);
if (layer.v_b) {
Vcur = ggml_add(ctx0, Vcur, layer.v_b);
}
Qcur = ggml_reshape_3d(ctx0, Qcur, d_head, n_head, n_pos);
Kcur = ggml_reshape_3d(ctx0, Kcur, d_head, n_head, n_pos);
Vcur = ggml_reshape_3d(ctx0, Vcur, d_head, n_head, n_pos);
cb(Qcur, "Qcur", il);
cb(Kcur, "Kcur", il);
cb(Vcur, "Vcur", il);
cur = build_attn(layer.o_w, layer.o_b,
Qcur, Kcur, Vcur, nullptr, kq_scale, il);
cb(cur, "attn_out", il);
}
// re-add the layer input, e.g., residual
cur = ggml_add(ctx0, cur, inpL);
inpL = cur; // inpL = residual, cur = hidden_states
cb(cur, "ffn_inp", il);
// layernorm2
cur = build_norm(cur, layer.ln_2_w, layer.ln_2_b, NORM_TYPE_NORMAL, eps, il);
cb(cur, "ffn_inp_normed", il);
// ffn
cur = build_ffn(cur,
layer.ff_up_w, layer.ff_up_b,
layer.ff_gate_w, layer.ff_gate_b,
layer.ff_down_w, layer.ff_down_b,
hparams.ffn_op, il);
cb(cur, "ffn_out", il);
// residual 2
cur = ggml_add(ctx0, inpL, cur);
cb(cur, "layer_out", il);
inpL = cur;
}
// post-layernorm
if (model.post_ln_w) {
inpL = build_norm(inpL, model.post_ln_w, model.post_ln_b, NORM_TYPE_NORMAL, eps, -1);
}
ggml_tensor * embeddings = inpL;
// process vision feature layers (used by granite)
{
// final layer is a vision feature layer
if (vision_feature_layer.find(max_feature_layer) != vision_feature_layer.end()) {
embedding_stack.push_back(inpL);
}
// If feature layers are explicitly set, stack them (if we have multiple)
if (!embedding_stack.empty()) {
embeddings = embedding_stack[0];
for (size_t i = 1; i < embedding_stack.size(); i++) {
embeddings = ggml_concat(ctx0, embeddings, embedding_stack[i], 0);
}
}
}
// llava projector (also used by granite)
if (hparams.has_llava_projector) {
embeddings = ggml_reshape_2d(ctx0, embeddings, embeddings->ne[0], embeddings->ne[1]);
ggml_tensor * patches = ggml_new_tensor_1d(ctx0, GGML_TYPE_I32, n_patches);
ggml_set_name(patches, "patches");
ggml_set_input(patches);
// shape [1, 576, 1024]
// ne is whcn, ne = [1024, 576, 1, 1]
embeddings = ggml_get_rows(ctx0, embeddings, patches);
// print_tensor_info(embeddings, "embeddings");
// llava projector
if (proj_type == PROJECTOR_TYPE_MLP) {
embeddings = ggml_mul_mat(ctx0, model.mm_0_w, embeddings);
embeddings = ggml_add(ctx0, embeddings, model.mm_0_b);
embeddings = ggml_gelu(ctx0, embeddings);
if (model.mm_2_w) {
embeddings = ggml_mul_mat(ctx0, model.mm_2_w, embeddings);
embeddings = ggml_add(ctx0, embeddings, model.mm_2_b);
}
}
else if (proj_type == PROJECTOR_TYPE_MLP_NORM) {
embeddings = ggml_mul_mat(ctx0, model.mm_0_w, embeddings);
embeddings = ggml_add(ctx0, embeddings, model.mm_0_b);
// ggml_tensor_printf(embeddings, "mm_0_w",0,true,false);
// First LayerNorm
embeddings = ggml_norm(ctx0, embeddings, eps);
embeddings = ggml_add(ctx0, ggml_mul(ctx0, embeddings, model.mm_1_w),
model.mm_1_b);
// GELU activation
embeddings = ggml_gelu(ctx0, embeddings);
// Second linear layer
embeddings = ggml_mul_mat(ctx0, model.mm_3_w, embeddings);
embeddings = ggml_add(ctx0, embeddings, model.mm_3_b);
// Second LayerNorm
embeddings = ggml_norm(ctx0, embeddings, eps);
embeddings = ggml_add(ctx0, ggml_mul(ctx0, embeddings, model.mm_4_w),
model.mm_4_b);
}
else if (proj_type == PROJECTOR_TYPE_LDP) {
// MobileVLM projector
int n_patch = 24;
ggml_tensor * mlp_1 = ggml_mul_mat(ctx0, model.mm_model_mlp_1_w, embeddings);
mlp_1 = ggml_add(ctx0, mlp_1, model.mm_model_mlp_1_b);
mlp_1 = ggml_gelu(ctx0, mlp_1);
ggml_tensor * mlp_3 = ggml_mul_mat(ctx0, model.mm_model_mlp_3_w, mlp_1);
mlp_3 = ggml_add(ctx0, mlp_3, model.mm_model_mlp_3_b);
// mlp_3 shape = [1, 576, 2048], ne = [2048, 576, 1, 1]
// block 1
ggml_tensor * block_1 = nullptr;
{
// transpose from [1, 576, 2048] --> [1, 2048, 576] --> [1, 2048, 24, 24]
mlp_3 = ggml_permute(ctx0, mlp_3, 1, 0, 2, 3);
mlp_3 = ggml_cont_4d(ctx0, mlp_3, n_patch, n_patch, mlp_3->ne[1], mlp_3->ne[2]);
// stride = 1, padding = 1, bias is nullptr
block_1 = ggml_conv_2d_dw(ctx0, model.mm_model_block_1_block_0_0_w, mlp_3, 1, 1, 1, 1, 1, 1);
// layer norm
// // block_1 shape = [1, 2048, 24, 24], ne = [24, 24, 2048, 1]
block_1 = ggml_cont(ctx0, ggml_permute(ctx0, block_1, 1, 2, 0, 3));
// block_1 shape = [1, 24, 24, 2048], ne = [2048, 24, 24, 1]
block_1 = ggml_norm(ctx0, block_1, eps);
block_1 = ggml_add(ctx0, ggml_mul(ctx0, block_1, model.mm_model_block_1_block_0_1_w), model.mm_model_block_1_block_0_1_b);
block_1 = ggml_cont(ctx0, ggml_permute(ctx0, block_1, 2, 0, 1, 3));
// block_1 shape = [1, 2048, 24, 24], ne = [24, 24, 2048, 1]
// hardswish
ggml_tensor * block_1_hw = ggml_hardswish(ctx0, block_1);
block_1 = ggml_pool_2d(ctx0, block_1_hw, GGML_OP_POOL_AVG, block_1_hw->ne[0], block_1_hw->ne[1], block_1_hw->ne[0], block_1_hw->ne[1], 0, 0);
// block_1 shape = [1, 2048, 1, 1], ne = [1, 1, 2048, 1]
// pointwise conv
block_1 = ggml_reshape_2d(ctx0, block_1, block_1->ne[0]*block_1->ne[1]*block_1->ne[2], block_1->ne[3]);
block_1 = ggml_mul_mat(ctx0, model.mm_model_block_1_block_1_fc1_w, block_1);
block_1 = ggml_add(ctx0, block_1, model.mm_model_block_1_block_1_fc1_b);
block_1 = ggml_relu(ctx0, block_1);
block_1 = ggml_mul_mat(ctx0, model.mm_model_block_1_block_1_fc2_w, block_1);
block_1 = ggml_add(ctx0, block_1, model.mm_model_block_1_block_1_fc2_b);
block_1 = ggml_hardsigmoid(ctx0, block_1);
// block_1_hw shape = [1, 2048, 24, 24], ne = [24, 24, 2048, 1], block_1 shape = [1, 2048], ne = [2048, 1, 1, 1]
block_1 = ggml_reshape_4d(ctx0, block_1, 1, 1, block_1->ne[0], block_1->ne[1]);
block_1 = ggml_mul(ctx0, block_1_hw, block_1);
int w = block_1->ne[0], h = block_1->ne[1];
block_1 = ggml_reshape_3d(ctx0, block_1, w*h, block_1->ne[2], block_1->ne[3]);
block_1 = ggml_cont(ctx0, ggml_permute(ctx0, block_1, 1, 0, 2, 3));
// block_1 shape = [1, 24*24, 2048], ne = [24*24, 2048, 1]
block_1 = ggml_mul_mat(ctx0, model.mm_model_block_1_block_2_0_w, block_1);
block_1 = ggml_reshape_4d(ctx0, block_1, block_1->ne[0], w, h, block_1->ne[3]);
// block_1 shape = [1, 24, 24, 2048], ne = [2048, 24, 24, 1]
block_1 = ggml_norm(ctx0, block_1, eps);
block_1 = ggml_add(ctx0, ggml_mul(ctx0, block_1, model.mm_model_block_1_block_2_1_w), model.mm_model_block_1_block_2_1_b);
block_1 = ggml_cont(ctx0, ggml_permute(ctx0, block_1, 2, 0, 1, 3));
// block1 shape = [1, 2048, 24, 24], ne = [24, 24, 2048, 1]
// residual
block_1 = ggml_add(ctx0, mlp_3, block_1);
}
// block_2
{
// stride = 2
block_1 = ggml_conv_2d_dw(ctx0, model.mm_model_block_2_block_0_0_w, block_1, 2, 2, 1, 1, 1, 1);
// block_1 shape = [1, 2048, 12, 12], ne = [12, 12, 2048, 1]
// layer norm
block_1 = ggml_cont(ctx0, ggml_permute(ctx0, block_1, 1, 2, 0, 3));
// block_1 shape = [1, 12, 12, 2048], ne = [2048, 12, 12, 1]
block_1 = ggml_norm(ctx0, block_1, eps);
block_1 = ggml_add(ctx0, ggml_mul(ctx0, block_1, model.mm_model_block_2_block_0_1_w), model.mm_model_block_2_block_0_1_b);
block_1 = ggml_cont(ctx0, ggml_permute(ctx0, block_1, 2, 0, 1, 3));
// block_1 shape = [1, 2048, 12, 12], ne = [12, 12, 2048, 1]
// hardswish
ggml_tensor * block_1_hw = ggml_hardswish(ctx0, block_1);
// not sure the parameters is right for globalAvgPooling
block_1 = ggml_pool_2d(ctx0, block_1_hw, GGML_OP_POOL_AVG, block_1_hw->ne[0], block_1_hw->ne[1], block_1_hw->ne[0], block_1_hw->ne[1], 0, 0);
// block_1 shape = [1, 2048, 1, 1], ne = [1, 1, 2048, 1]
// pointwise conv
block_1 = ggml_reshape_2d(ctx0, block_1, block_1->ne[0]*block_1->ne[1]*block_1->ne[2], block_1->ne[3]);
block_1 = ggml_mul_mat(ctx0, model.mm_model_block_2_block_1_fc1_w, block_1);
block_1 = ggml_add(ctx0, block_1, model.mm_model_block_2_block_1_fc1_b);
block_1 = ggml_relu(ctx0, block_1);
block_1 = ggml_mul_mat(ctx0, model.mm_model_block_2_block_1_fc2_w, block_1);
block_1 = ggml_add(ctx0, block_1, model.mm_model_block_2_block_1_fc2_b);
block_1 = ggml_hardsigmoid(ctx0, block_1);
// block_1_hw shape = [1, 2048, 12, 12], ne = [12, 12, 2048, 1], block_1 shape = [1, 2048, 1, 1], ne = [1, 1, 2048, 1]
block_1 = ggml_reshape_4d(ctx0, block_1, 1, 1, block_1->ne[0], block_1->ne[1]);
block_1 = ggml_mul(ctx0, block_1_hw, block_1);
int w = block_1->ne[0], h = block_1->ne[1];
block_1 = ggml_reshape_3d(ctx0, block_1, w*h, block_1->ne[2], block_1->ne[3]);
block_1 = ggml_cont(ctx0, ggml_permute(ctx0, block_1, 1, 0, 2, 3));
// block_1 shape = [1, 24*24, 2048], ne = [24*24, 2048, 1]
block_1 = ggml_mul_mat(ctx0, model.mm_model_block_2_block_2_0_w, block_1);
block_1 = ggml_reshape_4d(ctx0, block_1, block_1->ne[0], w, h, block_1->ne[3]);
// block_1 shape = [1, 12, 12, 2048], ne = [2048, 12, 12, 1]
block_1 = ggml_norm(ctx0, block_1, eps);
block_1 = ggml_add(ctx0, ggml_mul(ctx0, block_1, model.mm_model_block_2_block_2_1_w), model.mm_model_block_2_block_2_1_b);
block_1 = ggml_reshape_3d(ctx0, block_1, block_1->ne[0], block_1->ne[1] * block_1->ne[2], block_1->ne[3]);
// block_1 shape = [1, 144, 2048], ne = [2048, 144, 1]
}
embeddings = block_1;
}
else if (proj_type == PROJECTOR_TYPE_LDPV2)
{
int n_patch = 24;
ggml_tensor * mlp_0 = ggml_mul_mat(ctx0, model.mm_model_mlp_0_w, embeddings);
mlp_0 = ggml_add(ctx0, mlp_0, model.mm_model_mlp_0_b);
mlp_0 = ggml_gelu(ctx0, mlp_0);
ggml_tensor * mlp_2 = ggml_mul_mat(ctx0, model.mm_model_mlp_2_w, mlp_0);
mlp_2 = ggml_add(ctx0, mlp_2, model.mm_model_mlp_2_b);
// mlp_2 ne = [2048, 576, 1, 1]
// // AVG Pool Layer 2*2, strides = 2
mlp_2 = ggml_permute(ctx0, mlp_2, 1, 0, 2, 3);
// mlp_2 ne = [576, 2048, 1, 1]
mlp_2 = ggml_cont_4d(ctx0, mlp_2, n_patch, n_patch, mlp_2->ne[1], mlp_2->ne[2]);
// mlp_2 ne [24, 24, 2048, 1]
mlp_2 = ggml_pool_2d(ctx0, mlp_2, GGML_OP_POOL_AVG, 2, 2, 2, 2, 0, 0);
// weight ne = [3, 3, 2048, 1]
ggml_tensor * peg_0 = ggml_conv_2d_dw(ctx0, model.mm_model_peg_0_w, mlp_2, 1, 1, 1, 1, 1, 1);
peg_0 = ggml_cont(ctx0, ggml_permute(ctx0, peg_0, 1, 2, 0, 3));
peg_0 = ggml_add(ctx0, peg_0, model.mm_model_peg_0_b);
mlp_2 = ggml_cont(ctx0, ggml_permute(ctx0, mlp_2, 1, 2, 0, 3));
peg_0 = ggml_add(ctx0, peg_0, mlp_2);
peg_0 = ggml_reshape_3d(ctx0, peg_0, peg_0->ne[0], peg_0->ne[1] * peg_0->ne[2], peg_0->ne[3]);
embeddings = peg_0;
}
else {
GGML_ABORT("fatal error");
}
}
// glm projector
else if (proj_type == PROJECTOR_TYPE_GLM_EDGE) {
size_t gridsz = (size_t)sqrt(embeddings->ne[1]);
embeddings = ggml_permute(ctx0,embeddings,1,0,2,3);
embeddings = ggml_cont_3d(ctx0, embeddings, gridsz, gridsz, embeddings->ne[1]);
embeddings = ggml_conv_2d(ctx0, model.mm_model_adapter_conv_w, embeddings, 2, 2, 0, 0, 1, 1);
embeddings = ggml_reshape_3d(ctx0, embeddings,embeddings->ne[0]*embeddings->ne[1] , embeddings->ne[2], batch_size);
embeddings = ggml_cont(ctx0, ggml_permute(ctx0,embeddings, 1, 0, 2, 3));
embeddings = ggml_add(ctx0, embeddings, model.mm_model_adapter_conv_b);
// GLU
{
embeddings = ggml_mul_mat(ctx0, model.mm_model_mlp_0_w, embeddings);
embeddings = ggml_norm(ctx0, embeddings, eps);
embeddings = ggml_add(ctx0, ggml_mul(ctx0, embeddings, model.mm_model_ln_q_w), model.mm_model_ln_q_b);
embeddings = ggml_gelu_inplace(ctx0, embeddings);
ggml_tensor * x = embeddings;
embeddings = ggml_mul_mat(ctx0, model.mm_model_mlp_2_w, embeddings);
x = ggml_mul_mat(ctx0, model.mm_model_mlp_1_w,x);
embeddings = ggml_swiglu_split(ctx0, embeddings, x);
embeddings = ggml_mul_mat(ctx0, model.mm_model_mlp_3_w, embeddings);
}
// arrangement of BOI/EOI token embeddings
// note: these embeddings are not present in text model, hence we cannot process them as text tokens
// see: https://huggingface.co/THUDM/glm-edge-v-2b/blob/main/siglip.py#L53
{
embeddings = ggml_concat(ctx0, model.mm_boi, embeddings, 1); // BOI
embeddings = ggml_concat(ctx0, embeddings, model.mm_eoi, 1); // EOI
}
}
else {
GGML_ABORT("llava: unknown projector type");
}
// build the graph
ggml_build_forward_expand(gf, embeddings);
return gf;
}
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