diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/common.cpp | 91 | ||||
| -rw-r--r-- | examples/common.h | 21 | ||||
| -rw-r--r-- | examples/main/main.cpp | 71 | ||||
| -rw-r--r-- | examples/save-load-state/save-load-state.cpp | 34 |
4 files changed, 180 insertions, 37 deletions
diff --git a/examples/common.cpp b/examples/common.cpp index 9f10dc26..6c712c71 100644 --- a/examples/common.cpp +++ b/examples/common.cpp @@ -6,6 +6,8 @@ #include <string> #include <iterator> #include <algorithm> +#include <sstream> +#include <iostream> #if defined (_WIN32) #include <fcntl.h> @@ -114,6 +116,18 @@ bool gpt_params_parse(int argc, char ** argv, gpt_params & params) { break; } params.temp = std::stof(argv[i]); + } else if (arg == "--tfs") { + if (++i >= argc) { + invalid_param = true; + break; + } + params.tfs_z = std::stof(argv[i]); + } else if (arg == "--typical") { + if (++i >= argc) { + invalid_param = true; + break; + } + params.typical_p = std::stof(argv[i]); } else if (arg == "--repeat_last_n") { if (++i >= argc) { invalid_param = true; @@ -126,6 +140,36 @@ bool gpt_params_parse(int argc, char ** argv, gpt_params & params) { break; } params.repeat_penalty = std::stof(argv[i]); + } else if (arg == "--frequency_penalty") { + if (++i >= argc) { + invalid_param = true; + break; + } + params.frequency_penalty = std::stof(argv[i]); + } else if (arg == "--presence_penalty") { + if (++i >= argc) { + invalid_param = true; + break; + } + params.presence_penalty = std::stof(argv[i]); + } else if (arg == "--mirostat") { + if (++i >= argc) { + invalid_param = true; + break; + } + params.mirostat = std::stoi(argv[i]); + } else if (arg == "--mirostat_lr") { + if (++i >= argc) { + invalid_param = true; + break; + } + params.mirostat_eta = std::stof(argv[i]); + } else if (arg == "--mirostat_ent") { + if (++i >= argc) { + invalid_param = true; + break; + } + params.mirostat_tau = std::stof(argv[i]); } else if (arg == "-b" || arg == "--batch_size") { if (++i >= argc) { invalid_param = true; @@ -185,7 +229,28 @@ bool gpt_params_parse(int argc, char ** argv, gpt_params & params) { } else if (arg == "--perplexity") { params.perplexity = true; } else if (arg == "--ignore-eos") { - params.ignore_eos = true; + params.logit_bias[llama_token_eos()] = -INFINITY; + } else if (arg == "--no-penalize-nl") { + params.penalize_nl = false; + } else if (arg == "-l" || arg == "--logit-bias") { + if (++i >= argc) { + invalid_param = true; + break; + } + std::stringstream ss(argv[i]); + llama_token key; + char sign; + std::string value_str; + try { + if (ss >> key && ss >> sign && std::getline(ss, value_str) && (sign == '+' || sign == '-')) { + params.logit_bias[key] = std::stof(value_str) * ((sign == '-') ? -1.0f : 1.0f); + } else { + throw std::exception(); + } + } catch (const std::exception &e) { + invalid_param = true; + break; + } } else if (arg == "--n_parts") { if (++i >= argc) { invalid_param = true; @@ -240,12 +305,26 @@ void gpt_print_usage(int /*argc*/, char ** argv, const gpt_params & params) { fprintf(stderr, " -f FNAME, --file FNAME\n"); fprintf(stderr, " prompt file to start generation.\n"); fprintf(stderr, " -n N, --n_predict N number of tokens to predict (default: %d, -1 = infinity)\n", params.n_predict); - fprintf(stderr, " --top_k N top-k sampling (default: %d)\n", params.top_k); - fprintf(stderr, " --top_p N top-p sampling (default: %.1f)\n", (double)params.top_p); - fprintf(stderr, " --repeat_last_n N last n tokens to consider for penalize (default: %d)\n", params.repeat_last_n); - fprintf(stderr, " --repeat_penalty N penalize repeat sequence of tokens (default: %.1f)\n", (double)params.repeat_penalty); + fprintf(stderr, " --top_k N top-k sampling (default: %d, 0 = disabled)\n", params.top_k); + fprintf(stderr, " --top_p N top-p sampling (default: %.1f, 1.0 = disabled)\n", (double)params.top_p); + fprintf(stderr, " --tfs N tail free sampling, parameter z (default: %.1f, 1.0 = disabled)\n", (double)params.tfs_z); + fprintf(stderr, " --typical N locally typical sampling, parameter p (default: %.1f, 1.0 = disabled)\n", (double)params.typical_p); + fprintf(stderr, " --repeat_last_n N last n tokens to consider for penalize (default: %d, 0 = disabled, -1 = ctx_size)\n", params.repeat_last_n); + fprintf(stderr, " --repeat_penalty N penalize repeat sequence of tokens (default: %.1f, 1.0 = disabled)\n", (double)params.repeat_penalty); + fprintf(stderr, " --presence_penalty N repeat alpha presence penalty (default: %.1f, 0.0 = disabled)\n", (double)params.presence_penalty); + fprintf(stderr, " --frequency_penalty N repeat alpha frequency penalty (default: %.1f, 0.0 = disabled)\n", (double)params.frequency_penalty); + fprintf(stderr, " --mirostat N use Mirostat sampling.\n"); + fprintf(stderr, " Top K, Nucleus, Tail Free and Locally Typical samplers are ignored if used.\n"); + fprintf(stderr, " (default: %d, 0 = disabled, 1 = Mirostat, 2 = Mirostat 2.0)\n", params.mirostat); + fprintf(stderr, " --mirostat_lr N Mirostat learning rate, parameter eta (default: %.1f)\n", (double)params.mirostat_eta); + fprintf(stderr, " --mirostat_ent N Mirostat target entropy, parameter tau (default: %.1f)\n", (double)params.mirostat_tau); + fprintf(stderr, " -l TOKEN_ID(+/-)BIAS, --logit-bias TOKEN_ID(+/-)BIAS\n"); + fprintf(stderr, " modifies the likelihood of token appearing in the completion,\n"); + fprintf(stderr, " i.e. `--logit-bias 15043+1` to increase likelihood of token ' Hello',\n"); + fprintf(stderr, " or `--logit-bias 15043-1` to decrease likelihood of token ' Hello'\n"); fprintf(stderr, " -c N, --ctx_size N size of the prompt context (default: %d)\n", params.n_ctx); - fprintf(stderr, " --ignore-eos ignore end of stream token and continue generating\n"); + fprintf(stderr, " --ignore-eos ignore end of stream token and continue generating (implies --logit-bias 2-inf)\n"); + fprintf(stderr, " --no-penalize-nl do not penalize newline token\n"); fprintf(stderr, " --memory_f32 use f32 instead of f16 for memory key+value\n"); fprintf(stderr, " --temp N temperature (default: %.1f)\n", (double)params.temp); fprintf(stderr, " --n_parts N number of model parts (default: -1 = determine from dimensions)\n"); diff --git a/examples/common.h b/examples/common.h index 9d3697d7..14e6b1ba 100644 --- a/examples/common.h +++ b/examples/common.h @@ -8,6 +8,7 @@ #include <vector> #include <random> #include <thread> +#include <unordered_map> // // CLI argument parsing @@ -17,17 +18,25 @@ struct gpt_params { int32_t seed = -1; // RNG seed int32_t n_threads = std::min(4, (int32_t) std::thread::hardware_concurrency()); int32_t n_predict = 128; // new tokens to predict - int32_t repeat_last_n = 64; // last n tokens to penalize int32_t n_parts = -1; // amount of model parts (-1 = determine from model dimensions) int32_t n_ctx = 512; // context size int32_t n_batch = 512; // batch size for prompt processing (must be >=32 to use BLAS) int32_t n_keep = 0; // number of tokens to keep from initial prompt // sampling parameters - int32_t top_k = 40; - float top_p = 0.95f; - float temp = 0.80f; - float repeat_penalty = 1.10f; + std::unordered_map<llama_token, float> logit_bias; // logit bias for specific tokens + int32_t top_k = 0; // <= 0 to use vocab size + float top_p = 1.0f; // 1.0 = disabled + float tfs_z = 1.0f; // 1.0 = disabled + float typical_p = 1.0f; // 1.0 = disabled + float temp = 1.0f; // 1.0 = disabled + float repeat_penalty = 1.0f; // 1.0 = disabled + int32_t repeat_last_n = -1; // last n tokens to penalize (0 = disable penalty, -1 = context size) + float frequency_penalty = 0.0f; // 0.0 = disabled + float presence_penalty = 0.0f; // 0.0 = disabled + int mirostat = 0; // 0 = disabled, 1 = mirostat, 2 = mirostat 2.0 + float mirostat_tau = 5.0f; // target entropy + float mirostat_eta = 0.1f; // learning rate std::string model = "models/lamma-7B/ggml-model.bin"; // model path std::string prompt = ""; @@ -47,7 +56,7 @@ struct gpt_params { bool interactive_first = false; // wait for user input immediately bool instruct = false; // instruction mode (used for Alpaca models) - bool ignore_eos = false; // do not stop generating after eos + bool penalize_nl = true; // consider newlines as a repeatable token bool perplexity = false; // compute perplexity over the prompt bool use_mmap = true; // use mmap for faster loads bool use_mlock = false; // use mlock to keep model in memory diff --git a/examples/main/main.cpp b/examples/main/main.cpp index fda65574..674920b8 100644 --- a/examples/main/main.cpp +++ b/examples/main/main.cpp @@ -276,8 +276,8 @@ int main(int argc, char ** argv) { fprintf(stderr, "Input prefix: '%s'\n", params.input_prefix.c_str()); } } - fprintf(stderr, "sampling: temp = %f, top_k = %d, top_p = %f, repeat_last_n = %i, repeat_penalty = %f\n", - params.temp, params.top_k, params.top_p, params.repeat_last_n, params.repeat_penalty); + fprintf(stderr, "sampling: repeat_last_n = %d, repeat_penalty = %f, presence_penalty = %f, frequency_penalty = %f, top_k = %d, tfs_z = %f, top_p = %f, typical_p = %f, temp = %f, mirostat = %d, mirostat_lr = %f, mirostat_ent = %f\n", + params.repeat_last_n, params.repeat_penalty, params.presence_penalty, params.frequency_penalty, params.top_k, params.tfs_z, params.top_p, params.typical_p, params.temp, params.mirostat, params.mirostat_eta, params.mirostat_tau); fprintf(stderr, "generate: n_ctx = %d, n_batch = %d, n_predict = %d, n_keep = %d\n", n_ctx, params.n_batch, params.n_predict, params.n_keep); fprintf(stderr, "\n\n"); @@ -387,10 +387,19 @@ int main(int argc, char ** argv) { if ((int) embd_inp.size() <= n_consumed && !is_interacting) { // out of user input, sample next token - const int32_t top_k = params.top_k; - const float top_p = params.top_p; const float temp = params.temp; + const int32_t top_k = params.top_k <= 0 ? llama_n_vocab(ctx) : params.top_k; + const float top_p = params.top_p; + const float tfs_z = params.tfs_z; + const float typical_p = params.typical_p; + const int32_t repeat_last_n = params.repeat_last_n < 0 ? n_ctx : params.repeat_last_n; const float repeat_penalty = params.repeat_penalty; + const float alpha_presence = params.presence_penalty; + const float alpha_frequency = params.frequency_penalty; + const int mirostat = params.mirostat; + const float mirostat_tau = params.mirostat_tau; + const float mirostat_eta = params.mirostat_eta; + const bool penalize_nl = params.penalize_nl; // optionally save the session on first sample (for faster prompt loading next time) if (!path_session.empty() && need_to_save_session) { @@ -402,14 +411,58 @@ int main(int argc, char ** argv) { { auto logits = llama_get_logits(ctx); + auto n_vocab = llama_n_vocab(ctx); - if (params.ignore_eos) { - logits[llama_token_eos()] = 0; + // Apply params.logit_bias map + for (auto it = params.logit_bias.begin(); it != params.logit_bias.end(); it++) { + logits[it->first] += it->second; } - id = llama_sample_top_p_top_k(ctx, - last_n_tokens.data() + n_ctx - params.repeat_last_n, - params.repeat_last_n, top_k, top_p, temp, repeat_penalty); + std::vector<llama_token_data> candidates; + candidates.reserve(n_vocab); + for (llama_token token_id = 0; token_id < n_vocab; token_id++) { + candidates.emplace_back(llama_token_data{token_id, logits[token_id], 0.0f}); + } + + llama_token_data_array candidates_p = { candidates.data(), candidates.size(), false }; + + // Apply penalties + float nl_logit = logits[llama_token_nl()]; + auto last_n_repeat = std::min(std::min((int)last_n_tokens.size(), repeat_last_n), n_ctx); + llama_sample_repetition_penalty(ctx, &candidates_p, + last_n_tokens.data() + last_n_tokens.size() - last_n_repeat, + last_n_repeat, repeat_penalty); + llama_sample_frequency_and_presence_penalties(ctx, &candidates_p, + last_n_tokens.data() + last_n_tokens.size() - last_n_repeat, + last_n_repeat, alpha_frequency, alpha_presence); + if (!penalize_nl) { + logits[llama_token_nl()] = nl_logit; + } + + if (temp <= 0) { + // Greedy sampling + id = llama_sample_token_greedy(ctx, &candidates_p); + } else { + if (mirostat == 1) { + static float mirostat_mu = 2.0f * mirostat_tau; + const int mirostat_m = 100; + llama_sample_temperature(ctx, &candidates_p, temp); + id = llama_sample_token_mirostat(ctx, &candidates_p, mirostat_tau, mirostat_eta, mirostat_m, &mirostat_mu); + } else if (mirostat == 2) { + static float mirostat_mu = 2.0f * mirostat_tau; + llama_sample_temperature(ctx, &candidates_p, temp); + id = llama_sample_token_mirostat_v2(ctx, &candidates_p, mirostat_tau, mirostat_eta, &mirostat_mu); + } else { + // Temperature sampling + llama_sample_top_k(ctx, &candidates_p, top_k); + llama_sample_tail_free(ctx, &candidates_p, tfs_z); + llama_sample_typical(ctx, &candidates_p, typical_p); + llama_sample_top_p(ctx, &candidates_p, top_p); + llama_sample_temperature(ctx, &candidates_p, temp); + id = llama_sample_token(ctx, &candidates_p); + } + } + // printf("`%d`", candidates_p.size); last_n_tokens.erase(last_n_tokens.begin()); last_n_tokens.push_back(id); diff --git a/examples/save-load-state/save-load-state.cpp b/examples/save-load-state/save-load-state.cpp index 39aa7f82..07dfa2c7 100644 --- a/examples/save-load-state/save-load-state.cpp +++ b/examples/save-load-state/save-load-state.cpp @@ -64,14 +64,15 @@ int main(int argc, char ** argv) { // first run printf("\n%s", params.prompt.c_str()); for (auto i = 0; i < params.n_predict; i++) { - auto next_token = llama_sample_top_p_top_k( - ctx, - &last_n_tokens_data.back() - params.repeat_last_n, - params.repeat_last_n, - 40, - 1.0, - 1.0, - 1.1); + auto logits = llama_get_logits(ctx); + auto n_vocab = llama_n_vocab(ctx); + std::vector<llama_token_data> candidates; + candidates.reserve(n_vocab); + for (llama_token token_id = 0; token_id < n_vocab; token_id++) { + candidates.emplace_back(llama_token_data{token_id, logits[token_id], 0.0f}); + } + llama_token_data_array candidates_p = { candidates.data(), candidates.size(), false }; + auto next_token = llama_sample_token(ctx, &candidates_p); auto next_token_str = llama_token_to_str(ctx, next_token); last_n_tokens_data.push_back(next_token); printf("%s", next_token_str); @@ -106,14 +107,15 @@ int main(int argc, char ** argv) { // second run for (auto i = 0; i < params.n_predict; i++) { - auto next_token = llama_sample_top_p_top_k( - ctx2, - &last_n_tokens_data.back() - params.repeat_last_n, - params.repeat_last_n, - 40, - 1.0, - 1.0, - 1.1); + auto logits = llama_get_logits(ctx2); + auto n_vocab = llama_n_vocab(ctx2); + std::vector<llama_token_data> candidates; + candidates.reserve(n_vocab); + for (llama_token token_id = 0; token_id < n_vocab; token_id++) { + candidates.emplace_back(llama_token_data{token_id, logits[token_id], 0.0f}); + } + llama_token_data_array candidates_p = { candidates.data(), candidates.size(), false }; + auto next_token = llama_sample_token(ctx2, &candidates_p); auto next_token_str = llama_token_to_str(ctx2, next_token); last_n_tokens_data.push_back(next_token); printf("%s", next_token_str); |