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server : fix parallel speculative decoding (#10513)

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Georgi Gerganov 2024-11-26 13:36:40 +02:00 committed by GitHub
parent 811872a59d
commit 84e1c33cde
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1 changed files with 35 additions and 36 deletions
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71
examples/server/server.cpp
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@ -2267,49 +2267,48 @@ struct server_context {
continue; // continue loop of slots
}
llama_token id;
llama_token id = common_sampler_sample(slot.smpl, ctx, slot.i_batch - i);
{
completion_token_output result;
slot.i_batch = -1;
id = common_sampler_sample(slot.smpl, ctx, slot.i_batch - i);
common_sampler_accept(slot.smpl, id, true);
slot.i_batch = -1;
common_sampler_accept(slot.smpl, id, true);
slot.n_decoded += 1;
if (slot.n_decoded == 1) {
slot.t_start_generation = ggml_time_us();
slot.t_prompt_processing = (slot.t_start_generation - slot.t_start_process_prompt) / 1e3;
metrics.on_prompt_eval(slot);
}
result.tok = id;
const auto * cur_p = common_sampler_get_candidates(slot.smpl);
for (size_t i = 0; i < (size_t) slot.params.sampling.n_probs; ++i) {
result.probs.push_back({
cur_p->data[i].id,
i >= cur_p->size ? 0.0f : cur_p->data[i].p,
});
}
if (!process_token(result, slot)) {
// release slot because of stop condition
slot.release();
slot.print_timings();
send_final_response(slot);
metrics.on_prediction(slot);
continue;
}
slot.n_decoded += 1;
if (slot.n_decoded == 1) {
slot.t_start_generation = ggml_time_us();
slot.t_prompt_processing = (slot.t_start_generation - slot.t_start_process_prompt) / 1e3;
metrics.on_prompt_eval(slot);
}
// check if the slot supports speculative decoding
if (!slot.can_speculate()) {
completion_token_output result;
result.tok = id;
const auto * cur_p = common_sampler_get_candidates(slot.smpl);
for (size_t i = 0; i < (size_t) slot.params.sampling.n_probs; ++i) {
result.probs.push_back({
cur_p->data[i].id,
i >= cur_p->size ? 0.0f : cur_p->data[i].p,
});
}
if (!process_token(result, slot)) {
// release slot because of stop condition
slot.release();
slot.print_timings();
send_final_response(slot);
metrics.on_prediction(slot);
continue;
}
}
// do speculative decoding
for (auto & slot : slots) {
if (!slot.is_processing() || !slot.can_speculate()) {
continue;
}
llama_token id = slot.sampled;
struct common_speculative_params params_spec;
params_spec.n_draft = slot.params.speculative.n_max;