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examples : allow extracting embeddings from decoder contexts (#13797)

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ggml-ci
This commit is contained in:
Georgi Gerganov
2025-05-26 14:03:54 +03:00
committed by GitHub
parent 22229314fc
commit 79c137f776
4 changed files with 10 additions and 16 deletions
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4
examples/embedding/embedding.cpp
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@@ -41,8 +41,8 @@ static void batch_decode(llama_context * ctx, llama_batch & batch, float * outpu
// run model // run model
LOG_INF("%s: n_tokens = %d, n_seq = %d\n", __func__, batch.n_tokens, n_seq); LOG_INF("%s: n_tokens = %d, n_seq = %d\n", __func__, batch.n_tokens, n_seq);
if (llama_encode(ctx, batch) < 0) { if (llama_decode(ctx, batch) < 0) {
LOG_ERR("%s : failed to encode\n", __func__); LOG_ERR("%s : failed to process\n", __func__);
} }
for (int i = 0; i < batch.n_tokens; i++) { for (int i = 0; i < batch.n_tokens; i++) {

12
examples/retrieval/retrieval.cpp
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@@ -81,14 +81,14 @@ static void batch_add_seq(llama_batch & batch, const std::vector<int32_t> & toke
} }
} }
static void batch_encode(llama_context * ctx, llama_batch & batch, float * output, int n_seq, int n_embd) { static void batch_process(llama_context * ctx, llama_batch & batch, float * output, int n_seq, int n_embd) {
// clear previous kv_cache values (irrelevant for embeddings) // clear previous kv_cache values (irrelevant for embeddings)
llama_kv_self_clear(ctx); llama_kv_self_clear(ctx);
// run model // run model
LOG_INF("%s: n_tokens = %d, n_seq = %d\n", __func__, batch.n_tokens, n_seq); LOG_INF("%s: n_tokens = %d, n_seq = %d\n", __func__, batch.n_tokens, n_seq);
if (llama_encode(ctx, batch) < 0) { if (llama_decode(ctx, batch) < 0) {
LOG_ERR("%s : failed to encode\n", __func__); LOG_ERR("%s : failed to process\n", __func__);
} }
for (int i = 0; i < batch.n_tokens; i++) { for (int i = 0; i < batch.n_tokens; i++) {
@@ -233,7 +233,7 @@ int main(int argc, char ** argv) {
// encode if at capacity // encode if at capacity
if (batch.n_tokens + n_toks > n_batch) { if (batch.n_tokens + n_toks > n_batch) {
float * out = emb + p * n_embd; float * out = emb + p * n_embd;
batch_encode(ctx, batch, out, s, n_embd); batch_process(ctx, batch, out, s, n_embd);
common_batch_clear(batch); common_batch_clear(batch);
p += s; p += s;
s = 0; s = 0;
@@ -246,7 +246,7 @@ int main(int argc, char ** argv) {
// final batch // final batch
float * out = emb + p * n_embd; float * out = emb + p * n_embd;
batch_encode(ctx, batch, out, s, n_embd); batch_process(ctx, batch, out, s, n_embd);
// save embeddings to chunks // save embeddings to chunks
for (int i = 0; i < n_chunks; i++) { for (int i = 0; i < n_chunks; i++) {
@@ -267,7 +267,7 @@ int main(int argc, char ** argv) {
batch_add_seq(query_batch, query_tokens, 0); batch_add_seq(query_batch, query_tokens, 0);
std::vector<float> query_emb(n_embd, 0); std::vector<float> query_emb(n_embd, 0);
batch_encode(ctx, query_batch, query_emb.data(), 1, n_embd); batch_process(ctx, query_batch, query_emb.data(), 1, n_embd);
common_batch_clear(query_batch); common_batch_clear(query_batch);

2
src/llama-context.cpp
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@@ -852,7 +852,7 @@ int llama_context::encode(llama_batch & inp_batch) {
int llama_context::decode(llama_batch & inp_batch) { int llama_context::decode(llama_batch & inp_batch) {
if (!memory) { if (!memory) {
LLAMA_LOG_WARN("%s: cannot decode batches with this context (use llama_encode() instead)\n", __func__); LLAMA_LOG_DEBUG("%s: cannot decode batches with this context (calling encode() instead)\n", __func__);
return encode(inp_batch); return encode(inp_batch);
} }

8
tools/server/server.cpp
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@@ -3394,13 +3394,7 @@ struct server_context {
batch.logits + i, batch.logits + i,
}; };
int ret = 0; const int ret = llama_decode(ctx, batch_view);
if (do_encode) {
ret = llama_encode(ctx, batch_view);
} else {
ret = llama_decode(ctx, batch_view);
}
metrics.on_decoded(slots); metrics.on_decoded(slots);