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llama : add abort_callback to interrupt computation (#5409)

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* using abort_callback from ggml to stop llama computation

* format fix

* a brief explaining comment

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
This commit is contained in:
Michael Podvitskiy 2024-03-02 20:52:25 +01:00 committed by GitHub
parent 494c870326
commit 4a6e2d6142
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GPG Key ID: B5690EEEBB952194
2 changed files with 27 additions and 4 deletions
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18
llama.cpp
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@ -1987,6 +1987,9 @@ struct llama_context {
std::vector<uint8_t> buf_compute_meta;
ggml_backend_sched_t sched = nullptr;
ggml_abort_callback abort_callback = nullptr;
void * abort_callback_data = nullptr;
// input tensors
ggml_backend_buffer_t buf_input = nullptr;
ggml_context * ctx_input = nullptr;
@ -8071,6 +8074,7 @@ static void llama_graph_compute(
if (lctx.backend_cpu != nullptr) {
ggml_backend_cpu_set_n_threads(lctx.backend_cpu, n_threads);
ggml_backend_cpu_set_abort_callback(lctx.backend_cpu, lctx.abort_callback, lctx.abort_callback_data);
}
ggml_backend_sched_graph_compute(lctx.sched, gf);
@ -11856,6 +11860,8 @@ struct llama_context_params llama_context_default_params() {
/*.embedding =*/ false,
/*.offload_kqv =*/ true,
/*.do_pooling =*/ true,
/*.abort_callback =*/ nullptr,
/*.abort_callback_data =*/ nullptr,
};
return result;
@ -12038,8 +12044,11 @@ struct llama_context * llama_new_context_with_model(
LLAMA_LOG_INFO("%s: freq_base = %.1f\n", __func__, cparams.rope_freq_base);
LLAMA_LOG_INFO("%s: freq_scale = %g\n", __func__, cparams.rope_freq_scale);
ctx->rng = std::mt19937(params.seed);
ctx->logits_all = params.logits_all;
ctx->abort_callback = params.abort_callback;
ctx->abort_callback_data = params.abort_callback_data;
ctx->rng = std::mt19937(params.seed);
ctx->logits_all = params.logits_all;
const ggml_type type_k = params.type_k;
const ggml_type type_v = params.type_v;
@ -12989,6 +12998,11 @@ void llama_set_n_threads(struct llama_context * ctx, uint32_t n_threads, uint32_
ctx->cparams.n_threads_batch = n_threads_batch;
}
void llama_set_abort_callback(struct llama_context * ctx, bool (*abort_callback)(void * data), void * abort_callback_data) {
ctx->abort_callback = abort_callback;
ctx->abort_callback_data = abort_callback_data;
}
struct llama_batch llama_batch_get_one(
llama_token * tokens,
int32_t n_tokens,

13
llama.h
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@ -255,10 +255,16 @@ extern "C" {
enum ggml_type type_v; // data type for V cache
// Keep the booleans together to avoid misalignment during copy-by-value.
bool logits_all; // the llama_eval() call computes all logits, not just the last one (DEPRECATED - set llama_batch.logits instead)
bool logits_all; // the llama_decode() call computes all logits, not just the last one (DEPRECATED - set llama_batch.logits instead)
bool embedding; // embedding mode only
bool offload_kqv; // whether to offload the KQV ops (including the KV cache) to GPU
bool do_pooling; // whether to pool (sum) embedding results by sequence id (ignored if no pooling layer)
// Abort callback
// if it returns true, execution of llama_decode() will be aborted
// currently works only with CPU execution
ggml_abort_callback abort_callback;
void * abort_callback_data;
};
// model quantization parameters
@ -632,7 +638,10 @@ extern "C" {
// n_threads_batch is the number of threads used for prompt and batch processing (multiple tokens)
LLAMA_API void llama_set_n_threads(struct llama_context * ctx, uint32_t n_threads, uint32_t n_threads_batch);
// Token logits obtained from the last call to llama_eval()
// Set abort callback
LLAMA_API void llama_set_abort_callback(struct llama_context * ctx, ggml_abort_callback abort_callback, void * abort_callback_data);
// Token logits obtained from the last call to llama_decode()
// The logits for the last token are stored in the last row
// Logits for which llama_batch.logits[i] == 0 are undefined
// Rows: n_tokens provided with llama_batch