From fbc98b748e7b075e327bcf13237057f647678049 Mon Sep 17 00:00:00 2001 From: MaggotHATE Date: Tue, 15 Oct 2024 15:54:55 +0500 Subject: [PATCH] sampling : add XTC sampler (#9742) * Initial XTC commit Adds XTC sampler, not activated by default, but recommended settings by default. * Cleanup * Simplified chances calculation To be more inline with the original implementation, chance is calculated once at the beginning. * First fixes by comments Still need to look into sorting * Fixed trailing backspaces * Fixed RNG to be reproduceable Thanks to @slaren for directions * Fixed forgotten header * Moved `min_keep` Moved from conditions to a simple check at the end. * Fixed broken randomization Thanks to @slaren for explanation * Swapped sorting for a custom algorithm Shifts tokens to remove the penalized ones, then puts the penalized at the back. Should make `min_keep` still viable. * Algorithm rework 1. Scan token from top till the first non-penalizable 2. Remove the last captured token (the least probable above threshold) 3. Shift all tokens to override the remaining penalizable 4. Penalize and put them at the the bottom. * Added XTC to `test-sampling` * Simplified algorithm and more tests * Updated info in common and args * Merged back lost commits in common and arg * Update dump info in common * Fixed incorrect min_keep check * Added XTC to README * Renamed parameters, fixed info and defaults * probability is at 0 by default, but XTC is included in sampling queue * threshold higher than 0.5 switches XTC off * Initial server support * Added XTC to server UIs * Fixed labels in old server UI * Made algorithm safer and more readable * Removed xtc_threshold_max * Fixed arg after update * Quick fixes by comments * Simplified algorithm since threshold_max is removed * Renamed random distribution * Fixed tests and outdated README * Small fixes --- common/arg.cpp | 14 ++++ common/common.cpp | 2 + common/common.h | 6 ++ common/sampling.cpp | 13 +++- examples/main/README.md | 13 ++++ examples/server/public/index-new.html | 6 ++ examples/server/public/index.html | 4 ++ examples/server/server.cpp | 4 ++ include/llama.h | 3 + src/llama-sampling.cpp | 95 +++++++++++++++++++++++++++ tests/test-sampling.cpp | 45 +++++++++++-- 11 files changed, 195 insertions(+), 10 deletions(-) diff --git a/common/arg.cpp b/common/arg.cpp index 8969fc107..d6a8e1f6f 100644 --- a/common/arg.cpp +++ b/common/arg.cpp @@ -947,6 +947,20 @@ common_params_context common_params_parser_init(common_params & params, llama_ex params.sparams.tfs_z = std::stof(value); } ).set_sparam()); + add_opt(common_arg( + {"--xtc-probability"}, "N", + string_format("xtc probability (default: %.1f, 0.0 = disabled)", (double)params.sparams.xtc_probability), + [](common_params & params, const std::string & value) { + params.sparams.xtc_probability = std::stof(value); + } + ).set_sparam()); + add_opt(common_arg( + {"--xtc-threshold"}, "N", + string_format("xtc threshold (default: %.1f, 1.0 = disabled)", (double)params.sparams.xtc_threshold), + [](common_params & params, const std::string & value) { + params.sparams.xtc_threshold = std::stof(value); + } + ).set_sparam()); add_opt(common_arg( {"--typical"}, "N", string_format("locally typical sampling, parameter p (default: %.1f, 1.0 = disabled)", (double)params.sparams.typ_p), diff --git a/common/common.cpp b/common/common.cpp index 451307b55..c08f01b42 100644 --- a/common/common.cpp +++ b/common/common.cpp @@ -2104,6 +2104,8 @@ void yaml_dump_non_result_info(FILE * stream, const common_params & params, cons fprintf(stream, "top_k: %d # default: 40\n", sparams.top_k); fprintf(stream, "top_p: %f # default: 0.95\n", sparams.top_p); fprintf(stream, "min_p: %f # default: 0.0\n", sparams.min_p); + fprintf(stream, "xtc_probability: %f # default: 0.0\n", sparams.xtc_probability); + fprintf(stream, "xtc_threshold: %f # default: 0.1\n", sparams.xtc_threshold); fprintf(stream, "typ_p: %f # default: 1.0\n", sparams.typ_p); fprintf(stream, "verbose_prompt: %s # default: false\n", params.verbose_prompt ? "true" : "false"); fprintf(stream, "display_prompt: %s # default: true\n", params.display_prompt ? "true" : "false"); diff --git a/common/common.h b/common/common.h index 5507b1c59..df2ee6bd4 100644 --- a/common/common.h +++ b/common/common.h @@ -90,6 +90,8 @@ enum common_sampler_type { COMMON_SAMPLER_TYPE_TFS_Z = 4, COMMON_SAMPLER_TYPE_TYPICAL_P = 5, COMMON_SAMPLER_TYPE_TEMPERATURE = 6, + COMMON_SAMPLER_TYPE_XTC = 7, + }; // dimensionality reduction methods, used by cvector-generator @@ -108,6 +110,8 @@ struct common_sampler_params { int32_t top_k = 40; // <= 0 to use vocab size float top_p = 0.95f; // 1.0 = disabled float min_p = 0.05f; // 0.0 = disabled + float xtc_probability = 0.00f; // 0.0 = disabled + float xtc_threshold = 0.10f; // > 0.5 disables XTC float tfs_z = 1.00f; // 1.0 = disabled float typ_p = 1.00f; // typical_p, 1.0 = disabled float temp = 0.80f; // <= 0.0 to sample greedily, 0.0 to not output probabilities @@ -124,12 +128,14 @@ struct common_sampler_params { bool ignore_eos = false; bool no_perf = false; // disable performance metrics + std::vector samplers = { COMMON_SAMPLER_TYPE_TOP_K, COMMON_SAMPLER_TYPE_TFS_Z, COMMON_SAMPLER_TYPE_TYPICAL_P, COMMON_SAMPLER_TYPE_TOP_P, COMMON_SAMPLER_TYPE_MIN_P, + COMMON_SAMPLER_TYPE_XTC, COMMON_SAMPLER_TYPE_TEMPERATURE }; diff --git a/common/sampling.cpp b/common/sampling.cpp index cd49ade69..fb95bcd3b 100644 --- a/common/sampling.cpp +++ b/common/sampling.cpp @@ -130,10 +130,10 @@ std::string common_sampler_params::print() const { snprintf(result, sizeof(result), "\trepeat_last_n = %d, repeat_penalty = %.3f, frequency_penalty = %.3f, presence_penalty = %.3f\n" - "\ttop_k = %d, tfs_z = %.3f, top_p = %.3f, min_p = %.3f, typical_p = %.3f, temp = %.3f\n" + "\ttop_k = %d, tfs_z = %.3f, top_p = %.3f, min_p = %.3f, xtc_probability = %.3f, xtc_threshold = %.3f, typical_p = %.3f, temp = %.3f\n" "\tmirostat = %d, mirostat_lr = %.3f, mirostat_ent = %.3f", penalty_last_n, penalty_repeat, penalty_freq, penalty_present, - top_k, tfs_z, top_p, min_p, typ_p, temp, + top_k, tfs_z, top_p, min_p, xtc_probability, xtc_threshold, typ_p, temp, mirostat, mirostat_eta, mirostat_tau); return std::string(result); @@ -184,6 +184,9 @@ struct common_sampler * common_sampler_init(const struct llama_model * model, co case COMMON_SAMPLER_TYPE_MIN_P: llama_sampler_chain_add(result->chain, llama_sampler_init_min_p (params.min_p, params.min_keep)); break; + case COMMON_SAMPLER_TYPE_XTC: + llama_sampler_chain_add(result->chain, llama_sampler_init_xtc (params.xtc_probability, params.xtc_threshold, params.min_keep, params.seed)); + break; case COMMON_SAMPLER_TYPE_TFS_Z: llama_sampler_chain_add(result->chain, llama_sampler_init_tail_free(params.tfs_z, params.min_keep)); break; @@ -372,6 +375,7 @@ char common_sampler_type_to_chr(enum common_sampler_type cnstr) { case COMMON_SAMPLER_TYPE_TOP_P: return 'p'; case COMMON_SAMPLER_TYPE_MIN_P: return 'm'; case COMMON_SAMPLER_TYPE_TEMPERATURE: return 't'; + case COMMON_SAMPLER_TYPE_XTC: return 'x'; default : return '?'; } } @@ -384,6 +388,7 @@ std::string common_sampler_type_to_str(enum common_sampler_type cnstr) { case COMMON_SAMPLER_TYPE_TOP_P: return "top_p"; case COMMON_SAMPLER_TYPE_MIN_P: return "min_p"; case COMMON_SAMPLER_TYPE_TEMPERATURE: return "temperature"; + case COMMON_SAMPLER_TYPE_XTC: return "xtc"; default : return ""; } } @@ -396,6 +401,7 @@ std::vector common_sampler_types_from_names(const std::vect { "min_p", COMMON_SAMPLER_TYPE_MIN_P }, { "tfs_z", COMMON_SAMPLER_TYPE_TFS_Z }, { "temperature", COMMON_SAMPLER_TYPE_TEMPERATURE }, + { "xtc", COMMON_SAMPLER_TYPE_XTC }, }; // since samplers names are written multiple ways @@ -441,7 +447,8 @@ std::vector common_sampler_types_from_chars(const std::stri { common_sampler_type_to_chr(COMMON_SAMPLER_TYPE_TYPICAL_P), COMMON_SAMPLER_TYPE_TYPICAL_P }, { common_sampler_type_to_chr(COMMON_SAMPLER_TYPE_TOP_P), COMMON_SAMPLER_TYPE_TOP_P }, { common_sampler_type_to_chr(COMMON_SAMPLER_TYPE_MIN_P), COMMON_SAMPLER_TYPE_MIN_P }, - { common_sampler_type_to_chr(COMMON_SAMPLER_TYPE_TEMPERATURE), COMMON_SAMPLER_TYPE_TEMPERATURE } + { common_sampler_type_to_chr(COMMON_SAMPLER_TYPE_TEMPERATURE), COMMON_SAMPLER_TYPE_TEMPERATURE }, + { common_sampler_type_to_chr(COMMON_SAMPLER_TYPE_XTC), COMMON_SAMPLER_TYPE_XTC } }; std::vector samplers; diff --git a/examples/main/README.md b/examples/main/README.md index f0c3031ab..620934dad 100644 --- a/examples/main/README.md +++ b/examples/main/README.md @@ -241,6 +241,19 @@ The `--mirostat-ent` option sets the Mirostat target entropy (tau), which repres Example usage: `--mirostat 2 --mirostat-lr 0.05 --mirostat-ent 3.0` +### XTC Sampling + +- `--xtc-probability N`: Sets the chance for token removal (checked once on sampler start) (default: 0.0). +- `--xtc-threshold N`: Sets a minimum probability threshold for tokens to be removed (default: 0.1). + +Exclude Top Choices (XTC) is a unique sampler that is designed to remove top tokens from consideration and avoid more obvious and repetitive outputs. With a chance of `xtc-probability` it searches for tokens with probabilities of `xtc-threshold` and above, then removes all such tokens except the least probable one. + +By removing top tokens XTC can improve the variety of answers, break writing clichés and inhibit repition, since clichés and repeated phrases are usually more likely to appear. By keeping the last token above the threshold, XTC ensures that the answer is still coherent. XTC is meant to be used for creative tasks, but feel free to experiment with different settings for different models. + +Being experimental and unique, XTC is disabled by default. The recommended combination of samplers is Min-P followed by XTC on its default settings: `--sampling-seq mx --min-p 0.02 --xtc-probability 0.5`. + +Example usage: `--xtc-probability 0.5 --xtc-threshold 0.1` + ### Logit Bias - `-l TOKEN_ID(+/-)BIAS, --logit-bias TOKEN_ID(+/-)BIAS`: Modify the likelihood of a token appearing in the generated text completion. diff --git a/examples/server/public/index-new.html b/examples/server/public/index-new.html index c87dd8f1e..ad4183cd9 100644 --- a/examples/server/public/index-new.html +++ b/examples/server/public/index-new.html @@ -43,6 +43,8 @@ top_k: 0, // <= 0 to use vocab size top_p: 1.0, // 1.0 = disabled min_p: 0.05, // 0 = disabled; recommended for non-english: ~ 0.4 + xtc_probability: 0.0, // 0 = disabled; + xtc_threshold: 0.1, // > 0.5 disables XTC; tfs_z: 1.0, // 1.0 = disabled typical_p: 1.0, // 1.0 = disabled presence_penalty: 0.0, // 0.0 = disabled @@ -836,6 +838,8 @@ return html` ${FloatField({ label: "TFS-Z", title: "Activates tail-free sampling, a method used to limit the prediction of tokens that are too frequent. The parameter z controls the strength of this limitation. A value of 1.0 means that this function is deactivated.", max: 1.0, min: 0.0, name: "tfs_z", step: 0.01, value: params.value.tfs_z })} ${FloatField({ label: "Frequency Penalty", title: "A penalty that is applied based on the frequency with which certain tokens occur in the training data set. A higher value results in rare tokens being favoured.", max: 1.0, min: 0.0, name: "frequency_penalty", step: 0.01, value: params.value.frequency_penalty })} ${FloatField({ label: "Typical-P", title: "Activates local typical sampling, a method used to limit the prediction of tokens that are atypical in the current context. The parameter p controls the strength of this limitation. A value of 1.0 means that this function is deactivated.", max: 1.0, min: 0.0, name: "typical_p", step: 0.01, value: params.value.typical_p })} + ${FloatField({ label: "XTC probability", title: "Sets the chance for token removal (checked once on sampler start)", max: 1.0, min: 0.0, name: "xtc_probability", step: 0.01, value: params.value.xtc_probability })} + ${FloatField({ label: "XTC threshold", title: "Sets a minimum probability threshold for tokens to be removed", max: 0.5, min: 0.0, name: "xtc_threshold", step: 0.01, value: params.value.xtc_threshold })} ${IntField({ label: "Min Keep", title: "If greater than 0, samplers are forced to return N possible tokens at minimum. Default is 0", max: 10, min: 0, name: "min_keep", value: params.value.min_keep })} @@ -1132,6 +1136,8 @@ document.addEventListener('DOMContentLoaded', (event) => { const snapSettings = { temperature: { snapValue: 1.0, snapRangeMultiplier: 6 }, min_p: { snapValue: 0.05, snapRangeMultiplier: 2 }, + xtc_probability: { snapValue: 0.0, snapRangeMultiplier: 4 }, + xtc_threshold: { snapValue: 0.5, snapRangeMultiplier: 4 }, top_p: { snapValue: 1.0, snapRangeMultiplier: 4 }, tfs_z: { snapValue: 1.0, snapRangeMultiplier: 4 }, typical_p: { snapValue: 1.0, snapRangeMultiplier: 4 }, diff --git a/examples/server/public/index.html b/examples/server/public/index.html index 07fec6a38..88065705f 100644 --- a/examples/server/public/index.html +++ b/examples/server/public/index.html @@ -307,6 +307,8 @@ top_k: 40, // <= 0 to use vocab size top_p: 0.95, // 1.0 = disabled min_p: 0.05, // 0 = disabled + xtc_probability: 0.0, // 0 = disabled; + xtc_threshold: 0.1, // > 0.5 disables XTC; tfs_z: 1.0, // 1.0 = disabled typical_p: 1.0, // 1.0 = disabled presence_penalty: 0.0, // 0.0 = disabled @@ -1013,6 +1015,8 @@ ${FloatField({ label: "Typical P", max: 1.0, min: 0.0, name: "typical_p", step: 0.01, value: params.value.typical_p })} ${FloatField({ label: "Presence penalty", max: 1.0, min: 0.0, name: "presence_penalty", step: 0.01, value: params.value.presence_penalty })} ${FloatField({ label: "Frequency penalty", max: 1.0, min: 0.0, name: "frequency_penalty", step: 0.01, value: params.value.frequency_penalty })} + ${FloatField({ label: "XTC probability", max: 1.0, min: 0.0, name: "xtc_probability", step: 0.01, value: params.value.xtc_probability })} + ${FloatField({ label: "XTC threshold", max: 0.5, min: 0.0, name: "xtc_threshold", step: 0.01, value: params.value.xtc_threshold })}
diff --git a/examples/server/server.cpp b/examples/server/server.cpp index 18bcad3f0..8d4380e12 100644 --- a/examples/server/server.cpp +++ b/examples/server/server.cpp @@ -863,6 +863,8 @@ struct server_context { slot.sparams.top_k = json_value(data, "top_k", default_sparams.top_k); slot.sparams.top_p = json_value(data, "top_p", default_sparams.top_p); slot.sparams.min_p = json_value(data, "min_p", default_sparams.min_p); + slot.sparams.xtc_probability = json_value(data, "xtc_probability", default_sparams.xtc_probability); + slot.sparams.xtc_threshold = json_value(data, "xtc_threshold", default_sparams.xtc_threshold); slot.sparams.tfs_z = json_value(data, "tfs_z", default_sparams.tfs_z); slot.sparams.typ_p = json_value(data, "typical_p", default_sparams.typ_p); slot.sparams.temp = json_value(data, "temperature", default_sparams.temp); @@ -1196,6 +1198,8 @@ struct server_context { {"top_k", slot.sparams.top_k}, {"top_p", slot.sparams.top_p}, {"min_p", slot.sparams.min_p}, + {"xtc_probability", slot.sparams.xtc_probability}, + {"xtc_threshold", slot.sparams.xtc_threshold}, {"tfs_z", slot.sparams.tfs_z}, {"typical_p", slot.sparams.typ_p}, {"repeat_last_n", slot.sparams.penalty_last_n}, diff --git a/include/llama.h b/include/llama.h index 9110b5956..92d4c70c1 100644 --- a/include/llama.h +++ b/include/llama.h @@ -1101,6 +1101,9 @@ extern "C" { /// @details Dynamic temperature implementation (a.k.a. entropy) described in the paper https://arxiv.org/abs/2309.02772. LLAMA_API struct llama_sampler * llama_sampler_init_temp_ext (float t, float delta, float exponent); + /// @details XTC sampler as described in https://github.com/oobabooga/text-generation-webui/pull/6335 + LLAMA_API struct llama_sampler * llama_sampler_init_xtc (float p, float t, size_t min_keep, uint32_t seed); + /// @details Mirostat 1.0 algorithm described in the paper https://arxiv.org/abs/2007.14966. Uses tokens instead of words. /// @param candidates A vector of `llama_token_data` containing the candidate tokens, their probabilities (p), and log-odds (logit) for the current position in the generated text. /// @param tau The target cross-entropy (or surprise) value you want to achieve for the generated text. A higher value corresponds to more surprising or less predictable text, while a lower value corresponds to less surprising or more predictable text. diff --git a/src/llama-sampling.cpp b/src/llama-sampling.cpp index e255a8fc4..67a78c3ac 100644 --- a/src/llama-sampling.cpp +++ b/src/llama-sampling.cpp @@ -1059,6 +1059,101 @@ struct llama_sampler * llama_sampler_init_temp_ext(float temp, float delta, floa }; } +// xtc + +struct llama_sampler_xtc { + const float probability; + const float threshold; + const size_t min_keep; + + const uint32_t seed; + uint32_t seed_cur; + + std::mt19937 rng; +}; + +static const char * llama_sampler_xtc_name(const struct llama_sampler * /*smpl*/) { + return "xtc"; +} + +static void llama_sample_xtc_apply(struct llama_sampler * smpl, llama_token_data_array * cur_p) { + auto * ctx = (llama_sampler_xtc *) smpl->ctx; + + if (ctx->probability <= 0.0f + || ctx->threshold > 0.5f + || cur_p->size < 2) { + return; + } + + std::uniform_real_distribution distribution(0.0f, 1.0f); + float chance = distribution(ctx->rng); + if (chance > ctx->probability) return; + + // in case it's not sorted/recalculated yet + llama_sampler_softmax_impl(cur_p); + + int pos_last = 0; + + for (size_t i = 0; i < cur_p->size; ++i) { + if (cur_p->data[i].p >= ctx->threshold) { + pos_last = i; + } else break; + } + + if (cur_p->size - pos_last >= ctx->min_keep && pos_last > 0) { + cur_p->data += pos_last; + cur_p->size -= pos_last; + } +} + +static struct llama_sampler * llama_sampler_xtc_clone(const struct llama_sampler * smpl) { + const auto * ctx = (const llama_sampler_xtc *) smpl->ctx; + auto * result = llama_sampler_init_xtc(ctx->probability, ctx->threshold, ctx->min_keep, ctx->seed); + + // copy the state + { + auto * result_ctx = (llama_sampler_xtc *) result->ctx; + + result_ctx->rng = ctx->rng; + } + + return result; +} + +static void llama_sampler_xtc_free(struct llama_sampler * smpl) { + delete (llama_sampler_xtc *) smpl->ctx; +} + +static void llama_sampler_xtc_reset(struct llama_sampler * smpl) { + auto * ctx = (llama_sampler_xtc *) smpl->ctx; + ctx->seed_cur = get_rng_seed(ctx->seed); + ctx->rng.seed(ctx->seed_cur); +} + +static struct llama_sampler_i llama_sampler_xtc_i = { + /* .name = */ llama_sampler_xtc_name, + /* .accept = */ nullptr, + /* .apply = */ llama_sample_xtc_apply, + /* .reset = */ llama_sampler_xtc_reset, + /* .clone = */ llama_sampler_xtc_clone, + /* .free = */ llama_sampler_xtc_free, +}; + +struct llama_sampler * llama_sampler_init_xtc(float p, float t, size_t min_keep, uint32_t seed) { + auto seed_cur = get_rng_seed(seed); + return new llama_sampler { + /* .iface = */ &llama_sampler_xtc_i, + /* .ctx = */ new llama_sampler_xtc { + /* .probability = */ p, + /* .threshold = */ t, + /* .min_keep = */ min_keep, + /* .seed = */ seed, + /* .seed_cur = */ seed_cur, + /* .rng = */ std::mt19937(seed_cur), + }, + }; +} + // mirostat struct llama_sampler_mirostat { diff --git a/tests/test-sampling.cpp b/tests/test-sampling.cpp index 6e021c4c7..1372bdf13 100644 --- a/tests/test-sampling.cpp +++ b/tests/test-sampling.cpp @@ -111,6 +111,28 @@ static void test_min_p(const std::vector & probs, const std::vector & probs, const std::vector & expected_probs, float p, float t) { + const size_t n_vocab = probs.size(); + + std::vector cur; + cur.reserve(n_vocab); + for (llama_token token_id = 0; token_id < (llama_token)n_vocab; token_id++) { + const float logit = logf(probs[token_id]); + cur.emplace_back(llama_token_data{token_id, logit, 0.0f}); + } + + llama_token_data_array cur_p = { cur.data(), cur.size(), -1, false }; + APPLY(llama_sampler_init_softmax(), &cur_p); + DUMP(&cur_p); + APPLY(llama_sampler_init_xtc(p, t, 0, 0), &cur_p); + DUMP(&cur_p); + + GGML_ASSERT(cur_p.size == expected_probs.size()); + for (size_t i = 0; i < cur_p.size; i++) { + GGML_ASSERT(fabs(cur_p.data[i].p - expected_probs[i]) < 1e-5); + } +} + static void test_typical(const std::vector & probs, const std::vector & expected_probs, float p) { const size_t n_vocab = probs.size(); @@ -263,7 +285,7 @@ static void bench(llama_sampler * cnstr, const char * cnstr_name, const std::vec } const int64_t t_end = ggml_time_us(); llama_sampler_free(cnstr); - printf("%-42s: %8.3f us/iter\n", cnstr_name, (t_end - t_start) / (float)n_iter); + printf("%-43s: %8.3f us/iter\n", cnstr_name, (t_end - t_start) / (float)n_iter); } #define BENCH(__cnstr, __data, __n_iter) bench((__cnstr), #__cnstr, (__data), (__n_iter)) @@ -279,12 +301,13 @@ static void test_perf() { data.emplace_back(llama_token_data{i, logit, 0.0f}); } - BENCH(llama_sampler_init_top_k (40), data, 32); - BENCH(llama_sampler_init_top_p (0.8f, 1), data, 32); - BENCH(llama_sampler_init_min_p (0.2f, 1), data, 32); - BENCH(llama_sampler_init_tail_free(0.5f, 1), data, 32); - BENCH(llama_sampler_init_typical (0.5f, 1), data, 32); - BENCH(llama_sampler_init_softmax (), data, 32); + BENCH(llama_sampler_init_top_k (40), data, 32); + BENCH(llama_sampler_init_top_p (0.8f, 1), data, 32); + BENCH(llama_sampler_init_min_p (0.2f, 1), data, 32); + BENCH(llama_sampler_init_tail_free(0.5f, 1), data, 32); + BENCH(llama_sampler_init_typical (0.5f, 1), data, 32); + BENCH(llama_sampler_init_xtc (1.0f, 0.1f, 1, 1), data, 32); + BENCH(llama_sampler_init_softmax (), data, 32); } int main(void) { @@ -309,6 +332,14 @@ int main(void) { test_min_p({0.1f, 0.2f, 0.3f, 0.4f}, {0.4f/0.4f}, 0.76f); test_min_p({0.1f, 0.2f, 0.3f, 0.4f}, {0.4f/0.4f}, 1.00f); + printf("XTC should:\n"); + test_xtc({0.4f, 0.3f, 0.2f, 0.1f}, {0.1f}, 0.99f, 0.09f); + test_xtc({0.4f, 0.3f, 0.2f, 0.1f}, {0.2f, 0.1f}, 0.99f, 0.19f); + test_xtc({0.4f, 0.3f, 0.2f, 0.1f}, {0.3f, 0.2f, 0.1f}, 0.99f, 0.29f); + + printf("XTC should not:\n"); + test_xtc({0.4f, 0.3f, 0.2f, 0.1f}, {0.4f, 0.3f, 0.2f, 0.1f}, 0.99f, 0.39f); + test_tfs({0.1f, 0.15f, 0.2f, 0.25f, 0.3f}, {0.3f}, 0.25f); test_tfs({0.1f, 0.15f, 0.2f, 0.25f, 0.3f}, {0.3f, 0.25f}, 0.75f); test_tfs({0.1f, 0.15f, 0.2f, 0.25f, 0.3f}, {0.3f, 0.25f}, 0.99f);