From b333b06772c89d96aacb5490d6a219fba7c09cc6 Mon Sep 17 00:00:00 2001 From: Mitja Felicijan Date: Thu, 12 Feb 2026 20:57:17 +0100 Subject: Engage! --- llama.cpp/src/llama-quant.cpp | 1069 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1069 insertions(+) create mode 100644 llama.cpp/src/llama-quant.cpp (limited to 'llama.cpp/src/llama-quant.cpp') diff --git a/llama.cpp/src/llama-quant.cpp b/llama.cpp/src/llama-quant.cpp new file mode 100644 index 0000000..a789164 --- /dev/null +++ b/llama.cpp/src/llama-quant.cpp @@ -0,0 +1,1069 @@ +#include "llama-quant.h" +#include "llama-impl.h" +#include "llama-model.h" +#include "llama-model-loader.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +// Quantization types. Changes to this struct must be replicated in quantize.cpp +struct tensor_quantization { + std::string name; + ggml_type quant = GGML_TYPE_COUNT; +}; + +static void zeros(std::ofstream & file, size_t n) { + char zero = 0; + for (size_t i = 0; i < n; ++i) { + file.write(&zero, 1); + } +} + +static std::string remap_layer(const std::string & orig_name, const std::vector & prune, std::map & mapped, int & next_id) { + if (prune.empty()) { + return orig_name; + } + + static const std::regex pattern(R"(blk\.(\d+)\.)"); + if (std::smatch match; std::regex_search(orig_name, match, pattern)) { + const int blk = std::stoi(match[1]); + std::string new_name = orig_name; + + if (mapped.count(blk)) { + // Already mapped, do nothing + } else if (std::find(prune.begin(), prune.end(), blk) != prune.end()) { + mapped[blk] = ""; + } else if (blk < prune.front()) { + mapped[blk] = std::to_string(blk); + next_id = blk + 1; + } else { + mapped[blk] = std::to_string(next_id); + ++next_id; + } + + return mapped[blk].empty() ? mapped[blk] : new_name.replace(match.position(1), match.length(1), mapped[blk]); + } + + return orig_name; +} + +static std::string remap_imatrix (const std::string & orig_name, const std::map & mapped) { + if (mapped.empty()) { + return orig_name; + } + + static const std::regex pattern(R"(blk\.(\d+)\.)"); + if (std::smatch match; std::regex_search(orig_name, match, pattern)) { + const std::string blk(match[1]); + std::string new_name = orig_name; + + for (const auto & p : mapped) { + if (p.second == blk) { + LLAMA_LOG_DEBUG("(blk.%d imatrix) ", p.first); + return new_name.replace(match.position(1), match.length(1), std::to_string(p.first)); + } + } + GGML_ABORT("\n%s: imatrix mapping error for %s\n", __func__, orig_name.c_str()); + } + + return orig_name; +} + +struct quantize_state_impl { + const llama_model & model; + const llama_model_quantize_params * params; + + int n_attention_wv = 0; + int n_ffn_down = 0; + int n_ffn_gate = 0; + int n_ffn_up = 0; + int i_attention_wv = 0; + int i_ffn_down = 0; + int i_ffn_gate = 0; + int i_ffn_up = 0; + + int n_k_quantized = 0; + int n_fallback = 0; + + bool has_imatrix = false; + + // used to figure out if a model shares tok_embd with the output weight + bool has_output = false; + + quantize_state_impl(const llama_model & model, const llama_model_quantize_params * params) + : model(model) + , params(params) + {} +}; + +static void llama_tensor_dequantize_impl( + ggml_tensor * tensor, std::vector> & output, std::vector & workers, + const size_t nelements, const int nthread +) { + if (output.size() < nelements) { + output.resize(nelements); + } + float * f32_output = (float *) output.data(); + + const ggml_type_traits * qtype = ggml_get_type_traits(tensor->type); + if (ggml_is_quantized(tensor->type)) { + if (qtype->to_float == NULL) { + throw std::runtime_error(format("type %s unsupported for integer quantization: no dequantization available", ggml_type_name(tensor->type))); + } + } else if (tensor->type != GGML_TYPE_F16 && + tensor->type != GGML_TYPE_BF16) { + throw std::runtime_error(format("cannot dequantize/convert tensor type %s", ggml_type_name(tensor->type))); + } + + if (nthread < 2) { + if (tensor->type == GGML_TYPE_F16) { + ggml_fp16_to_fp32_row((ggml_fp16_t *)tensor->data, f32_output, nelements); + } else if (tensor->type == GGML_TYPE_BF16) { + ggml_bf16_to_fp32_row((ggml_bf16_t *)tensor->data, f32_output, nelements); + } else if (ggml_is_quantized(tensor->type)) { + qtype->to_float(tensor->data, f32_output, nelements); + } else { + GGML_ABORT("fatal error"); // unreachable + } + return; + } + + size_t block_size; + if (tensor->type == GGML_TYPE_F16 || + tensor->type == GGML_TYPE_BF16) { + block_size = 1; + } else { + block_size = (size_t)ggml_blck_size(tensor->type); + } + + size_t block_size_bytes = ggml_type_size(tensor->type); + + GGML_ASSERT(nelements % block_size == 0); + size_t nblocks = nelements / block_size; + size_t blocks_per_thread = nblocks / nthread; + size_t spare_blocks = nblocks - (blocks_per_thread * nthread); // if blocks aren't divisible by thread count + + size_t in_buff_offs = 0; + size_t out_buff_offs = 0; + + for (int tnum = 0; tnum < nthread; tnum++) { + size_t thr_blocks = blocks_per_thread + (tnum == nthread - 1 ? spare_blocks : 0); // num blocks for this thread + size_t thr_elems = thr_blocks * block_size; // number of elements for this thread + size_t thr_block_bytes = thr_blocks * block_size_bytes; // number of input bytes for this thread + + auto compute = [qtype] (ggml_type typ, uint8_t * inbuf, float * outbuf, int nels) { + if (typ == GGML_TYPE_F16) { + ggml_fp16_to_fp32_row((ggml_fp16_t *)inbuf, outbuf, nels); + } else if (typ == GGML_TYPE_BF16) { + ggml_bf16_to_fp32_row((ggml_bf16_t *)inbuf, outbuf, nels); + } else { + qtype->to_float(inbuf, outbuf, nels); + } + }; + workers.emplace_back(compute, tensor->type, (uint8_t *) tensor->data + in_buff_offs, f32_output + out_buff_offs, thr_elems); + in_buff_offs += thr_block_bytes; + out_buff_offs += thr_elems; + } + for (auto & w : workers) { w.join(); } + workers.clear(); +} + +static ggml_type llama_tensor_get_type(quantize_state_impl & qs, ggml_type new_type, const ggml_tensor * tensor, llama_ftype ftype) { + const std::string name = ggml_get_name(tensor); + + // TODO: avoid hardcoded tensor names - use the TN_* constants + const llm_arch arch = qs.model.arch; + const auto tn = LLM_TN(arch); + + auto use_more_bits = [](int i_layer, int n_layers) -> bool { + return i_layer < n_layers/8 || i_layer >= 7*n_layers/8 || (i_layer - n_layers/8)%3 == 2; + }; + const int n_expert = std::max(1, (int)qs.model.hparams.n_expert); + auto layer_info = [n_expert] (int i_layer, int n_layer, const char * name) { + if (n_expert > 1) { + // Believe it or not, "experts" in the FFN of Mixtral-8x7B are not consecutive, but occasionally randomly + // sprinkled in the model. Hence, simply dividing i_ffn_down by n_expert does not work + // for getting the current layer as I initially thought, and we need to resort to parsing the + // tensor name. + if (sscanf(name, "blk.%d.", &i_layer) != 1) { + throw std::runtime_error(format("Failed to determine layer for tensor %s", name)); + } + if (i_layer < 0 || i_layer >= n_layer) { + throw std::runtime_error(format("Bad layer %d for tensor %s. Must be in [0, %d)", i_layer, name, n_layer)); + } + } + return std::make_pair(i_layer, n_layer); + }; + + // for arches that share the same tensor between the token embeddings and the output, we quantize the token embeddings + // with the quantization of the output tensor + if (name == tn(LLM_TENSOR_OUTPUT, "weight") || (!qs.has_output && name == tn(LLM_TENSOR_TOKEN_EMBD, "weight"))) { + if (qs.params->output_tensor_type < GGML_TYPE_COUNT) { + new_type = qs.params->output_tensor_type; + } else { + const int64_t nx = tensor->ne[0]; + const int64_t qk_k = ggml_blck_size(new_type); + + if (ftype == LLAMA_FTYPE_MOSTLY_MXFP4_MOE) { + new_type = GGML_TYPE_Q8_0; + } + else if (arch == LLM_ARCH_FALCON || nx % qk_k != 0) { + new_type = GGML_TYPE_Q8_0; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ2_XXS || ftype == LLAMA_FTYPE_MOSTLY_IQ2_XS || ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS || + ftype == LLAMA_FTYPE_MOSTLY_IQ1_S || ftype == LLAMA_FTYPE_MOSTLY_IQ2_S || ftype == LLAMA_FTYPE_MOSTLY_IQ2_M || + ftype == LLAMA_FTYPE_MOSTLY_IQ1_M) { + new_type = GGML_TYPE_Q5_K; + } + else if (new_type != GGML_TYPE_Q8_0) { + new_type = GGML_TYPE_Q6_K; + } + } + } else if (ftype == LLAMA_FTYPE_MOSTLY_MXFP4_MOE) { + // MoE tensors -> MXFP4 + // other tensors -> Q8_0 + if (tensor->ne[2] > 1) { + new_type = GGML_TYPE_MXFP4; + } else { + new_type = GGML_TYPE_Q8_0; + } + } else if (name == "token_embd.weight" || name == "per_layer_token_embd.weight") { + if (qs.params->token_embedding_type < GGML_TYPE_COUNT) { + new_type = qs.params->token_embedding_type; + } else { + if (ftype == LLAMA_FTYPE_MOSTLY_IQ2_XXS || ftype == LLAMA_FTYPE_MOSTLY_IQ2_XS || + ftype == LLAMA_FTYPE_MOSTLY_IQ1_S || ftype == LLAMA_FTYPE_MOSTLY_IQ1_M) { + new_type = GGML_TYPE_Q2_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ2_S || ftype == LLAMA_FTYPE_MOSTLY_IQ2_M) { + new_type = GGML_TYPE_IQ3_S; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS) { + new_type = GGML_TYPE_IQ3_S; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_TQ1_0 || ftype == LLAMA_FTYPE_MOSTLY_TQ2_0) { + new_type = GGML_TYPE_Q4_K; + } + } + } else if (ftype == LLAMA_FTYPE_MOSTLY_IQ2_XXS || ftype == LLAMA_FTYPE_MOSTLY_IQ2_XS || ftype == LLAMA_FTYPE_MOSTLY_IQ1_S || + ftype == LLAMA_FTYPE_MOSTLY_IQ2_S || ftype == LLAMA_FTYPE_MOSTLY_IQ2_M || ftype == LLAMA_FTYPE_MOSTLY_IQ1_M) { + if (name.find("attn_v.weight") != std::string::npos) { + if (qs.model.hparams.n_gqa() >= 4 || qs.model.hparams.n_expert >= 4) new_type = GGML_TYPE_Q4_K; + else new_type = ftype == LLAMA_FTYPE_MOSTLY_IQ2_S || ftype == LLAMA_FTYPE_MOSTLY_IQ2_M ? GGML_TYPE_IQ3_S : GGML_TYPE_Q2_K; + ++qs.i_attention_wv; + } + else if (qs.model.hparams.n_expert == 8 && name.find("attn_k.weight") != std::string::npos) { + new_type = GGML_TYPE_Q4_K; + } + else if (name.find("ffn_down") != std::string::npos) { + if (qs.i_ffn_down < qs.n_ffn_down/8) { + new_type = ftype == LLAMA_FTYPE_MOSTLY_IQ2_S || ftype == LLAMA_FTYPE_MOSTLY_IQ2_M ? GGML_TYPE_IQ3_S : GGML_TYPE_Q2_K; + } + ++qs.i_ffn_down; + } + else if (name.find("attn_output.weight") != std::string::npos) { + if (qs.model.hparams.n_expert == 8) { + new_type = GGML_TYPE_Q5_K; + } else { + if (ftype == LLAMA_FTYPE_MOSTLY_IQ1_S || ftype == LLAMA_FTYPE_MOSTLY_IQ1_M) new_type = GGML_TYPE_IQ2_XXS; + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ2_S || ftype == LLAMA_FTYPE_MOSTLY_IQ2_M) new_type = GGML_TYPE_IQ3_S; + } + } + } else if (name.find("attn_v.weight") != std::string::npos) { + if (ftype == LLAMA_FTYPE_MOSTLY_Q2_K) { + new_type = qs.model.hparams.n_gqa() >= 4 ? GGML_TYPE_Q4_K : GGML_TYPE_Q3_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q2_K_S && qs.model.hparams.n_gqa() >= 4) { + new_type = GGML_TYPE_Q4_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS) { + new_type = qs.model.hparams.n_gqa() >= 4 ? GGML_TYPE_Q4_K : !qs.has_imatrix ? GGML_TYPE_IQ3_S : GGML_TYPE_IQ3_XXS; + } + else if ((ftype == LLAMA_FTYPE_MOSTLY_IQ3_XS || ftype == LLAMA_FTYPE_MOSTLY_IQ3_S) && qs.model.hparams.n_gqa() >= 4) { + new_type = GGML_TYPE_Q4_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_M) { + new_type = GGML_TYPE_Q4_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_M) { + new_type = qs.i_attention_wv < 2 ? GGML_TYPE_Q5_K : GGML_TYPE_Q4_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_L) new_type = GGML_TYPE_Q5_K; + else if ((ftype == LLAMA_FTYPE_MOSTLY_IQ4_NL || ftype == LLAMA_FTYPE_MOSTLY_IQ4_XS) && qs.model.hparams.n_gqa() >= 4) { + new_type = GGML_TYPE_Q5_K; + } + else if ((ftype == LLAMA_FTYPE_MOSTLY_Q4_K_M || ftype == LLAMA_FTYPE_MOSTLY_Q5_K_M) && + use_more_bits(qs.i_attention_wv, qs.n_attention_wv)) new_type = GGML_TYPE_Q6_K; + else if (ftype == LLAMA_FTYPE_MOSTLY_Q4_K_S && qs.i_attention_wv < 4) new_type = GGML_TYPE_Q5_K; + if (qs.model.type == LLM_TYPE_70B) { + // In the 70B model we have 8 heads sharing the same attn_v weights. As a result, the attn_v.weight tensor is + // 8x smaller compared to attn_q.weight. Hence, we can get a nice boost in quantization accuracy with + // nearly negligible increase in model size by quantizing this tensor with more bits: + if (new_type == GGML_TYPE_Q3_K || new_type == GGML_TYPE_Q4_K) new_type = GGML_TYPE_Q5_K; + } + if (qs.model.hparams.n_expert == 8) { + // for the 8-expert model, bumping this to Q8_0 trades just ~128MB + // TODO: explore better strategies + new_type = GGML_TYPE_Q8_0; + } + ++qs.i_attention_wv; + } else if (name.find("attn_k.weight") != std::string::npos) { + if (qs.model.hparams.n_expert == 8) { + // for the 8-expert model, bumping this to Q8_0 trades just ~128MB + // TODO: explore better strategies + new_type = GGML_TYPE_Q8_0; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XS) { + new_type = GGML_TYPE_IQ3_XXS; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS) { + new_type = GGML_TYPE_IQ2_S; + } + } else if (name.find("attn_q.weight") != std::string::npos) { + if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XS) { + new_type = GGML_TYPE_IQ3_XXS; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS) { + new_type = GGML_TYPE_IQ2_S; + } + } else if (name.find("ffn_down") != std::string::npos) { + auto info = layer_info(qs.i_ffn_down, qs.n_ffn_down, name.c_str()); + int i_layer = info.first, n_layer = info.second; + if (ftype == LLAMA_FTYPE_MOSTLY_Q2_K) new_type = GGML_TYPE_Q3_K; + else if (ftype == LLAMA_FTYPE_MOSTLY_Q2_K_S) { + if (i_layer < n_layer/8) new_type = GGML_TYPE_Q4_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS && !qs.has_imatrix) { + new_type = i_layer < n_layer/8 ? GGML_TYPE_Q4_K : GGML_TYPE_Q3_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_M) { + new_type = i_layer < n_layer/16 ? GGML_TYPE_Q5_K + : arch != LLM_ARCH_FALCON || use_more_bits(i_layer, n_layer) ? GGML_TYPE_Q4_K + : GGML_TYPE_Q3_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_M && (i_layer < n_layer/8 || + (qs.model.hparams.n_expert == 8 && use_more_bits(i_layer, n_layer)))) { + new_type = GGML_TYPE_Q4_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_L) { + new_type = arch == LLM_ARCH_FALCON ? GGML_TYPE_Q4_K : GGML_TYPE_Q5_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q4_K_M) { + if (arch == LLM_ARCH_FALCON) { + new_type = i_layer < n_layer/16 ? GGML_TYPE_Q6_K : + use_more_bits(i_layer, n_layer) ? GGML_TYPE_Q5_K : GGML_TYPE_Q4_K; + } else { + if (use_more_bits(i_layer, n_layer)) new_type = GGML_TYPE_Q6_K; + } + } + else if (i_layer < n_layer/8 && (ftype == LLAMA_FTYPE_MOSTLY_IQ4_NL || ftype == LLAMA_FTYPE_MOSTLY_IQ4_XS) && !qs.has_imatrix) { + new_type = GGML_TYPE_Q5_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q5_K_M && use_more_bits(i_layer, n_layer)) new_type = GGML_TYPE_Q6_K; + else if (ftype == LLAMA_FTYPE_MOSTLY_Q4_K_S && arch != LLM_ARCH_FALCON && i_layer < n_layer/8) { + new_type = GGML_TYPE_Q5_K; + } + else if ((ftype == LLAMA_FTYPE_MOSTLY_Q4_0 || ftype == LLAMA_FTYPE_MOSTLY_Q5_0) + && qs.has_imatrix && i_layer < n_layer/8) { + // Guard against craziness in the first few ffn_down layers that can happen even with imatrix for Q4_0/Q5_0. + // We only do it when an imatrix is provided because a) we want to make sure that one can always get the + // same quantization as before imatrix stuff, and b) Q4_1/Q5_1 do go crazy on ffn_down without an imatrix. + new_type = ftype == LLAMA_FTYPE_MOSTLY_Q4_0 ? GGML_TYPE_Q4_1 : GGML_TYPE_Q5_1; + } + ++qs.i_ffn_down; + } else if (name.find("attn_output.weight") != std::string::npos) { + if (arch != LLM_ARCH_FALCON) { + if (qs.model.hparams.n_expert == 8) { + if (ftype == LLAMA_FTYPE_MOSTLY_Q2_K || ftype == LLAMA_FTYPE_MOSTLY_IQ3_XS || ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS || + ftype == LLAMA_FTYPE_MOSTLY_Q3_K_S || ftype == LLAMA_FTYPE_MOSTLY_Q3_K_M || ftype == LLAMA_FTYPE_MOSTLY_IQ4_NL || + ftype == LLAMA_FTYPE_MOSTLY_Q4_K_S || ftype == LLAMA_FTYPE_MOSTLY_Q4_K_M || ftype == LLAMA_FTYPE_MOSTLY_IQ3_S || + ftype == LLAMA_FTYPE_MOSTLY_IQ3_M || ftype == LLAMA_FTYPE_MOSTLY_IQ4_XS) { + new_type = GGML_TYPE_Q5_K; + } + } else { + if (ftype == LLAMA_FTYPE_MOSTLY_Q2_K ) new_type = GGML_TYPE_Q3_K; + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XXS) new_type = GGML_TYPE_IQ3_S; + else if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_M ) new_type = GGML_TYPE_Q4_K; + else if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_L ) new_type = GGML_TYPE_Q5_K; + else if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_M ) new_type = GGML_TYPE_Q4_K; + } + } else { + if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_L) new_type = GGML_TYPE_Q4_K; + } + } + else if (name.find("attn_qkv.weight") != std::string::npos) { + if (ftype == LLAMA_FTYPE_MOSTLY_Q3_K_M || ftype == LLAMA_FTYPE_MOSTLY_Q3_K_L || ftype == LLAMA_FTYPE_MOSTLY_IQ3_M) { + new_type = GGML_TYPE_Q4_K; + } + else if (ftype == LLAMA_FTYPE_MOSTLY_Q4_K_M) new_type = GGML_TYPE_Q5_K; + else if (ftype == LLAMA_FTYPE_MOSTLY_Q5_K_M) new_type = GGML_TYPE_Q6_K; + } + else if (name.find("ffn_gate") != std::string::npos) { + auto info = layer_info(qs.i_ffn_gate, qs.n_ffn_gate, name.c_str()); + int i_layer = info.first, n_layer = info.second; + if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XS && (i_layer >= n_layer/8 && i_layer < 7*n_layer/8)) { + new_type = GGML_TYPE_IQ3_XXS; + } + ++qs.i_ffn_gate; + } + else if (name.find("ffn_up") != std::string::npos) { + auto info = layer_info(qs.i_ffn_up, qs.n_ffn_up, name.c_str()); + int i_layer = info.first, n_layer = info.second; + if (ftype == LLAMA_FTYPE_MOSTLY_IQ3_XS && (i_layer >= n_layer/8 && i_layer < 7*n_layer/8)) { + new_type = GGML_TYPE_IQ3_XXS; + } + ++qs.i_ffn_up; + } + + return new_type; +} + +static size_t llama_tensor_quantize_impl(enum ggml_type new_type, const float * f32_data, void * new_data, const int64_t chunk_size, int64_t nrows, int64_t n_per_row, const float * imatrix, std::vector & workers, const int nthread) { + if (nthread < 2) { + // single-thread + size_t new_size = ggml_quantize_chunk(new_type, f32_data, new_data, 0, nrows, n_per_row, imatrix); + if (!ggml_validate_row_data(new_type, new_data, new_size)) { + throw std::runtime_error("quantized data validation failed"); + } + return new_size; + } + + std::mutex mutex; + int64_t counter = 0; + size_t new_size = 0; + bool valid = true; + auto compute = [&mutex, &counter, &new_size, &valid, new_type, f32_data, new_data, chunk_size, + nrows, n_per_row, imatrix]() { + const int64_t nrows_per_chunk = chunk_size / n_per_row; + size_t local_size = 0; + while (true) { + std::unique_lock lock(mutex); + int64_t first_row = counter; counter += nrows_per_chunk; + if (first_row >= nrows) { + if (local_size > 0) { + new_size += local_size; + } + break; + } + lock.unlock(); + const int64_t this_nrow = std::min(nrows - first_row, nrows_per_chunk); + size_t this_size = ggml_quantize_chunk(new_type, f32_data, new_data, first_row * n_per_row, this_nrow, n_per_row, imatrix); + local_size += this_size; + + // validate the quantized data + const size_t row_size = ggml_row_size(new_type, n_per_row); + void * this_data = (char *) new_data + first_row * row_size; + if (!ggml_validate_row_data(new_type, this_data, this_size)) { + std::unique_lock lock(mutex); + valid = false; + break; + } + } + }; + for (int it = 0; it < nthread - 1; ++it) { + workers.emplace_back(compute); + } + compute(); + for (auto & w : workers) { w.join(); } + workers.clear(); + if (!valid) { + throw std::runtime_error("quantized data validation failed"); + } + return new_size; +} + +static void llama_model_quantize_impl(const std::string & fname_inp, const std::string & fname_out, const llama_model_quantize_params * params) { + ggml_type default_type; + llama_ftype ftype = params->ftype; + + switch (params->ftype) { + case LLAMA_FTYPE_MOSTLY_Q4_0: default_type = GGML_TYPE_Q4_0; break; + case LLAMA_FTYPE_MOSTLY_Q4_1: default_type = GGML_TYPE_Q4_1; break; + case LLAMA_FTYPE_MOSTLY_Q5_0: default_type = GGML_TYPE_Q5_0; break; + case LLAMA_FTYPE_MOSTLY_Q5_1: default_type = GGML_TYPE_Q5_1; break; + case LLAMA_FTYPE_MOSTLY_Q8_0: default_type = GGML_TYPE_Q8_0; break; + case LLAMA_FTYPE_MOSTLY_F16: default_type = GGML_TYPE_F16; break; + case LLAMA_FTYPE_MOSTLY_BF16: default_type = GGML_TYPE_BF16; break; + case LLAMA_FTYPE_ALL_F32: default_type = GGML_TYPE_F32; break; + + case LLAMA_FTYPE_MOSTLY_MXFP4_MOE: default_type = GGML_TYPE_MXFP4; break; + + // K-quants + case LLAMA_FTYPE_MOSTLY_Q2_K_S: + case LLAMA_FTYPE_MOSTLY_Q2_K: default_type = GGML_TYPE_Q2_K; break; + case LLAMA_FTYPE_MOSTLY_IQ3_XS: default_type = GGML_TYPE_IQ3_S; break; + case LLAMA_FTYPE_MOSTLY_Q3_K_S: + case LLAMA_FTYPE_MOSTLY_Q3_K_M: + case LLAMA_FTYPE_MOSTLY_Q3_K_L: default_type = GGML_TYPE_Q3_K; break; + case LLAMA_FTYPE_MOSTLY_Q4_K_S: + case LLAMA_FTYPE_MOSTLY_Q4_K_M: default_type = GGML_TYPE_Q4_K; break; + case LLAMA_FTYPE_MOSTLY_Q5_K_S: + case LLAMA_FTYPE_MOSTLY_Q5_K_M: default_type = GGML_TYPE_Q5_K; break; + case LLAMA_FTYPE_MOSTLY_Q6_K: default_type = GGML_TYPE_Q6_K; break; + case LLAMA_FTYPE_MOSTLY_TQ1_0: default_type = GGML_TYPE_TQ1_0; break; + case LLAMA_FTYPE_MOSTLY_TQ2_0: default_type = GGML_TYPE_TQ2_0; break; + case LLAMA_FTYPE_MOSTLY_IQ2_XXS: default_type = GGML_TYPE_IQ2_XXS; break; + case LLAMA_FTYPE_MOSTLY_IQ2_XS: default_type = GGML_TYPE_IQ2_XS; break; + case LLAMA_FTYPE_MOSTLY_IQ2_S: default_type = GGML_TYPE_IQ2_XS; break; + case LLAMA_FTYPE_MOSTLY_IQ2_M: default_type = GGML_TYPE_IQ2_S; break; + case LLAMA_FTYPE_MOSTLY_IQ3_XXS: default_type = GGML_TYPE_IQ3_XXS; break; + case LLAMA_FTYPE_MOSTLY_IQ1_S: default_type = GGML_TYPE_IQ1_S; break; + case LLAMA_FTYPE_MOSTLY_IQ1_M: default_type = GGML_TYPE_IQ1_M; break; + case LLAMA_FTYPE_MOSTLY_IQ4_NL: default_type = GGML_TYPE_IQ4_NL; break; + case LLAMA_FTYPE_MOSTLY_IQ4_XS: default_type = GGML_TYPE_IQ4_XS; break; + case LLAMA_FTYPE_MOSTLY_IQ3_S: default_type = GGML_TYPE_IQ3_S; break; + case LLAMA_FTYPE_MOSTLY_IQ3_M: default_type = GGML_TYPE_IQ3_S; break; + + default: throw std::runtime_error(format("invalid output file type %d\n", ftype)); + } + + int nthread = params->nthread; + + if (nthread <= 0) { + nthread = std::thread::hardware_concurrency(); + } + + // mmap consistently increases speed on Linux, and also increases speed on Windows with + // hot cache. It may cause a slowdown on macOS, possibly related to free memory. +#if defined(__linux__) || defined(_WIN32) + constexpr bool use_mmap = true; +#else + constexpr bool use_mmap = false; +#endif + + llama_model_kv_override * kv_overrides = nullptr; + if (params->kv_overrides) { + auto * v = (std::vector*)params->kv_overrides; + kv_overrides = v->data(); + } + + std::vector splits = {}; + llama_model_loader ml(fname_inp, splits, use_mmap, /*use_direct_io*/ false, /*check_tensors*/ true, /*no_alloc*/ false, kv_overrides, nullptr); + ml.init_mappings(false); // no prefetching + + llama_model model(llama_model_default_params()); + + model.load_arch (ml); + model.load_hparams(ml); + model.load_stats (ml); + + quantize_state_impl qs(model, params); + + if (params->only_copy) { + ftype = ml.ftype; + } + const std::unordered_map> * imatrix_data = nullptr; + if (params->imatrix) { + imatrix_data = static_cast>*>(params->imatrix); + if (imatrix_data) { + LLAMA_LOG_INFO("================================ Have weights data with %d entries\n",int(imatrix_data->size())); + qs.has_imatrix = true; + // check imatrix for nans or infs + for (const auto & kv : *imatrix_data) { + for (float f : kv.second) { + if (!std::isfinite(f)) { + throw std::runtime_error(format("imatrix contains non-finite value %f\n", f)); + } + } + } + } + } + + const size_t align = GGUF_DEFAULT_ALIGNMENT; + gguf_context_ptr ctx_out { gguf_init_empty() }; + + std::vector prune_list = {}; + if (params->prune_layers) { + prune_list = *static_cast *>(params->prune_layers); + } + + // copy the KV pairs from the input file + gguf_set_kv (ctx_out.get(), ml.meta.get()); + gguf_set_val_u32(ctx_out.get(), "general.quantization_version", GGML_QNT_VERSION); // TODO: use LLM_KV + gguf_set_val_u32(ctx_out.get(), "general.file_type", ftype); // TODO: use LLM_KV + + // Remove split metadata + gguf_remove_key(ctx_out.get(), ml.llm_kv(LLM_KV_SPLIT_NO).c_str()); + gguf_remove_key(ctx_out.get(), ml.llm_kv(LLM_KV_SPLIT_COUNT).c_str()); + gguf_remove_key(ctx_out.get(), ml.llm_kv(LLM_KV_SPLIT_TENSORS_COUNT).c_str()); + + if (params->kv_overrides) { + const std::vector & overrides = *(const std::vector *)params->kv_overrides; + for (const auto & o : overrides) { + if (o.key[0] == 0) break; + if (o.tag == LLAMA_KV_OVERRIDE_TYPE_FLOAT) { + gguf_set_val_f32(ctx_out.get(), o.key, o.val_f64); + } else if (o.tag == LLAMA_KV_OVERRIDE_TYPE_INT) { + // Setting type to UINT32. See https://github.com/ggml-org/llama.cpp/pull/14182 for context + gguf_set_val_u32(ctx_out.get(), o.key, (uint32_t)std::abs(o.val_i64)); + } else if (o.tag == LLAMA_KV_OVERRIDE_TYPE_BOOL) { + gguf_set_val_bool(ctx_out.get(), o.key, o.val_bool); + } else if (o.tag == LLAMA_KV_OVERRIDE_TYPE_STR) { + gguf_set_val_str(ctx_out.get(), o.key, o.val_str); + } else { + LLAMA_LOG_WARN("%s: unknown KV override type for key %s\n", __func__, o.key); + } + } + } + + std::map mapped; + int blk_id = 0; + + // make a list of weights + std::vector tensors; + tensors.reserve(ml.weights_map.size()); + for (const auto & it : ml.weights_map) { + const std::string remapped_name(remap_layer(it.first, prune_list, mapped, blk_id)); + if (remapped_name.empty()) { + LLAMA_LOG_DEBUG("%s: pruning tensor %s\n", __func__, it.first.c_str()); + continue; + } + + if (remapped_name != it.first) { + ggml_set_name(it.second.tensor, remapped_name.c_str()); + LLAMA_LOG_DEBUG("%s: tensor %s remapped to %s\n", __func__, it.first.c_str(), ggml_get_name(it.second.tensor)); + } + tensors.push_back(&it.second); + } + if (!prune_list.empty()) { + gguf_set_val_u32(ctx_out.get(), ml.llm_kv(LLM_KV_BLOCK_COUNT).c_str(), blk_id); + } + + // keep_split requires that the weights are sorted by split index + if (params->keep_split) { + std::sort(tensors.begin(), tensors.end(), [](const llama_model_loader::llama_tensor_weight * a, const llama_model_loader::llama_tensor_weight * b) { + if (a->idx == b->idx) { + return a->offs < b->offs; + } + return a->idx < b->idx; + }); + } + + for (const auto * it : tensors) { + const struct ggml_tensor * tensor = it->tensor; + + const std::string name = ggml_get_name(tensor); + + // TODO: avoid hardcoded tensor names - use the TN_* constants + if (name.find("attn_v.weight") != std::string::npos || + name.find("attn_qkv.weight") != std::string::npos || + name.find("attn_kv_b.weight")!= std::string::npos) { + ++qs.n_attention_wv; + } else if (name == LLM_TN(model.arch)(LLM_TENSOR_OUTPUT, "weight")) { + qs.has_output = true; + } + } + + qs.n_ffn_down = qs.n_ffn_gate = qs.n_ffn_up = (int)model.hparams.n_layer; + + size_t total_size_org = 0; + size_t total_size_new = 0; + + std::vector workers; + workers.reserve(nthread); + + int idx = 0; + + std::vector> read_data; + std::vector> work; + std::vector> f32_conv_buf; + + uint16_t n_split = 1; + + // Assume split index is continuous + if (params->keep_split) { + for (const auto * it : tensors) { + n_split = std::max(uint16_t(it->idx + 1), n_split); + } + } + std::vector ctx_outs(n_split); + ctx_outs[0] = std::move(ctx_out); + + // populate the original tensors so we get an initial meta data + for (const auto * it : tensors) { + uint16_t i_split = params->keep_split ? it->idx : 0; + ggml_tensor * tensor = it->tensor; + if (!ctx_outs[i_split]) { + ctx_outs[i_split].reset(gguf_init_empty()); + } + gguf_add_tensor(ctx_outs[i_split].get(), tensor); + } + + // Set split info if needed + if (n_split > 1) { + for (size_t i = 0; i < ctx_outs.size(); ++i) { + gguf_set_val_u16(ctx_outs[i].get(), ml.llm_kv(LLM_KV_SPLIT_NO).c_str(), i); + gguf_set_val_u16(ctx_outs[i].get(), ml.llm_kv(LLM_KV_SPLIT_COUNT).c_str(), n_split); + gguf_set_val_i32(ctx_outs[i].get(), ml.llm_kv(LLM_KV_SPLIT_TENSORS_COUNT).c_str(), (int32_t)tensors.size()); + } + } + + int cur_split = -1; + std::ofstream fout; + auto close_ofstream = [&]() { + // Write metadata and close file handler + if (fout.is_open()) { + fout.seekp(0); + std::vector data(gguf_get_meta_size(ctx_outs[cur_split].get())); + gguf_get_meta_data(ctx_outs[cur_split].get(), data.data()); + fout.write((const char *) data.data(), data.size()); + fout.close(); + } + }; + auto new_ofstream = [&](int index) { + cur_split = index; + GGML_ASSERT(ctx_outs[cur_split] && "Find uninitialized gguf_context"); + std::string fname = fname_out; + if (params->keep_split) { + std::vector split_path(llama_path_max(), 0); + llama_split_path(split_path.data(), split_path.size(), fname_out.c_str(), cur_split, n_split); + fname = std::string(split_path.data()); + } + + fout = std::ofstream(fname, std::ios::binary); + fout.exceptions(std::ofstream::failbit); // fail fast on write errors + const size_t meta_size = gguf_get_meta_size(ctx_outs[cur_split].get()); + // placeholder for the meta data + ::zeros(fout, meta_size); + }; + + const auto tn = LLM_TN(model.arch); + new_ofstream(0); + for (const auto * it : tensors) { + const auto & weight = *it; + ggml_tensor * tensor = weight.tensor; + if (weight.idx != cur_split && params->keep_split) { + close_ofstream(); + new_ofstream(weight.idx); + } + + const std::string name = ggml_get_name(tensor); + + if (!ml.use_mmap) { + if (read_data.size() < ggml_nbytes(tensor)) { + read_data.resize(ggml_nbytes(tensor)); + } + tensor->data = read_data.data(); + } + ml.load_data_for(tensor); + + LLAMA_LOG_INFO("[%4d/%4d] %36s - [%s], type = %6s, ", + ++idx, ml.n_tensors, + ggml_get_name(tensor), + llama_format_tensor_shape(tensor).c_str(), + ggml_type_name(tensor->type)); + + // This used to be a regex, but has an extreme cost to compile times. + bool quantize = name.rfind("weight") == name.size() - 6; // ends with 'weight'? + + // quantize only 2D and 3D tensors (experts) + quantize &= (ggml_n_dims(tensor) >= 2); + + // do not quantize norm tensors + quantize &= name.find("_norm.weight") == std::string::npos; + + quantize &= params->quantize_output_tensor || name != "output.weight"; + quantize &= !params->only_copy; + + // do not quantize expert gating tensors + // NOTE: can't use LLM_TN here because the layer number is not known + quantize &= name.find("ffn_gate_inp.weight") == std::string::npos; + + // these are very small (e.g. 4x4) + quantize &= name.find("altup") == std::string::npos; + quantize &= name.find("laurel") == std::string::npos; + + // these are not too big so keep them as it is + quantize &= name.find("per_layer_model_proj") == std::string::npos; + + // do not quantize positional embeddings and token types (BERT) + quantize &= name != LLM_TN(model.arch)(LLM_TENSOR_POS_EMBD, "weight"); + quantize &= name != LLM_TN(model.arch)(LLM_TENSOR_TOKEN_TYPES, "weight"); + + // do not quantize Mamba /Kimi's small conv1d weights + // NOTE: can't use LLM_TN here because the layer number is not known + quantize &= name.find("ssm_conv1d") == std::string::npos; + quantize &= name.find("shortconv.conv.weight") == std::string::npos; + + // do not quantize RWKV's small yet 2D weights + quantize &= name.find("time_mix_first.weight") == std::string::npos; + quantize &= name.find("time_mix_w0.weight") == std::string::npos; + quantize &= name.find("time_mix_w1.weight") == std::string::npos; + quantize &= name.find("time_mix_w2.weight") == std::string::npos; + quantize &= name.find("time_mix_v0.weight") == std::string::npos; + quantize &= name.find("time_mix_v1.weight") == std::string::npos; + quantize &= name.find("time_mix_v2.weight") == std::string::npos; + quantize &= name.find("time_mix_a0.weight") == std::string::npos; + quantize &= name.find("time_mix_a1.weight") == std::string::npos; + quantize &= name.find("time_mix_a2.weight") == std::string::npos; + quantize &= name.find("time_mix_g1.weight") == std::string::npos; + quantize &= name.find("time_mix_g2.weight") == std::string::npos; + quantize &= name.find("time_mix_decay_w1.weight") == std::string::npos; + quantize &= name.find("time_mix_decay_w2.weight") == std::string::npos; + quantize &= name.find("time_mix_lerp_fused.weight") == std::string::npos; + + // do not quantize relative position bias (T5) + quantize &= name.find("attn_rel_b.weight") == std::string::npos; + + // do not quantize specific multimodal tensors + quantize &= name.find(".position_embd.") == std::string::npos; + + ggml_type new_type; + void * new_data; + size_t new_size; + + if (quantize) { + new_type = default_type; + + // get more optimal quantization type based on the tensor shape, layer, etc. + if (!params->pure && ggml_is_quantized(default_type)) { + // if the user provided tensor types - use those + bool manual = false; + if (params->tensor_types) { + const std::vector & tensor_types = *static_cast *>(params->tensor_types); + const std::string tensor_name(tensor->name); + for (const auto & [tname, qtype] : tensor_types) { + if (std::regex pattern(tname); std::regex_search(tensor_name, pattern)) { + if (qtype != new_type) { + LLAMA_LOG_WARN("(manual override: %s -> %s) ", ggml_type_name(new_type), ggml_type_name(qtype)); + new_type = qtype; // if two or more types are specified for the same tensor, the last match wins + manual = true; + break; + } + } + } + } + + // if not manual - use the standard logic for choosing the quantization type based on the selected mixture + if (!manual) { + new_type = llama_tensor_get_type(qs, new_type, tensor, ftype); + } + + // incompatible tensor shapes are handled here - fallback to a compatible type + { + bool convert_incompatible_tensor = false; + + const int64_t nx = tensor->ne[0]; + const int64_t ny = tensor->ne[1]; + const int64_t qk_k = ggml_blck_size(new_type); + + if (nx % qk_k != 0) { + LLAMA_LOG_WARN("\n\n%s : tensor cols %" PRId64 " x %" PRId64 " are not divisible by %" PRId64 ", required for %s", __func__, nx, ny, qk_k, ggml_type_name(new_type)); + convert_incompatible_tensor = true; + } else { + ++qs.n_k_quantized; + } + + if (convert_incompatible_tensor) { + switch (new_type) { + case GGML_TYPE_TQ1_0: + case GGML_TYPE_TQ2_0: new_type = GGML_TYPE_Q4_0; break; // TODO: use a symmetric type instead + case GGML_TYPE_IQ2_XXS: + case GGML_TYPE_IQ2_XS: + case GGML_TYPE_IQ2_S: + case GGML_TYPE_IQ3_XXS: + case GGML_TYPE_IQ3_S: + case GGML_TYPE_IQ1_S: + case GGML_TYPE_IQ1_M: + case GGML_TYPE_Q2_K: + case GGML_TYPE_Q3_K: + case GGML_TYPE_IQ4_XS: new_type = GGML_TYPE_IQ4_NL; break; + case GGML_TYPE_Q4_K: new_type = GGML_TYPE_Q5_0; break; + case GGML_TYPE_Q5_K: new_type = GGML_TYPE_Q5_1; break; + case GGML_TYPE_Q6_K: new_type = GGML_TYPE_Q8_0; break; + default: throw std::runtime_error("\nUnsupported tensor size encountered\n"); + } + if (tensor->ne[0] % ggml_blck_size(new_type) != 0) { + new_type = GGML_TYPE_F16; + } + LLAMA_LOG_WARN(" - using fallback quantization %s\n", ggml_type_name(new_type)); + ++qs.n_fallback; + } + } + } + if (params->token_embedding_type < GGML_TYPE_COUNT && strcmp(tensor->name, "token_embd.weight") == 0) { + new_type = params->token_embedding_type; + } + if (params->output_tensor_type < GGML_TYPE_COUNT && strcmp(tensor->name, "output.weight") == 0) { + new_type = params->output_tensor_type; + } + + // If we've decided to quantize to the same type the tensor is already + // in then there's nothing to do. + quantize = tensor->type != new_type; + } + + if (!quantize) { + new_type = tensor->type; + new_data = tensor->data; + new_size = ggml_nbytes(tensor); + LLAMA_LOG_INFO("size = %8.3f MiB\n", ggml_nbytes(tensor)/1024.0/1024.0); + } else { + const int64_t nelements = ggml_nelements(tensor); + + const float * imatrix = nullptr; + if (imatrix_data) { + auto it = imatrix_data->find(remap_imatrix(tensor->name, mapped)); + if (it == imatrix_data->end()) { + LLAMA_LOG_INFO("\n====== %s: did not find weights for %s\n", __func__, tensor->name); + } else { + if (it->second.size() == (size_t)tensor->ne[0]*tensor->ne[2]) { + imatrix = it->second.data(); + } else { + LLAMA_LOG_INFO("\n====== %s: imatrix size %d is different from tensor size %d for %s\n", __func__, + int(it->second.size()), int(tensor->ne[0]*tensor->ne[2]), tensor->name); + + // this can happen when quantizing an old mixtral model with split tensors with a new incompatible imatrix + // this is a significant error and it may be good idea to abort the process if this happens, + // since many people will miss the error and not realize that most of the model is being quantized without an imatrix + // tok_embd should be ignored in this case, since it always causes this warning + if (name != tn(LLM_TENSOR_TOKEN_EMBD, "weight")) { + throw std::runtime_error(format("imatrix size %d is different from tensor size %d for %s", + int(it->second.size()), int(tensor->ne[0]*tensor->ne[2]), tensor->name)); + } + } + } + } + if ((new_type == GGML_TYPE_IQ2_XXS || + new_type == GGML_TYPE_IQ2_XS || + new_type == GGML_TYPE_IQ2_S || + new_type == GGML_TYPE_IQ1_S || + (new_type == GGML_TYPE_IQ1_M && strcmp(tensor->name, "token_embd.weight") && strcmp(tensor->name, "output.weight")) || + (new_type == GGML_TYPE_Q2_K && params->ftype == LLAMA_FTYPE_MOSTLY_Q2_K_S && strcmp(tensor->name, "token_embd.weight") != 0)) && !imatrix) { + LLAMA_LOG_ERROR("\n\n============================================================\n"); + LLAMA_LOG_ERROR("Missing importance matrix for tensor %s in a very low-bit quantization\n", tensor->name); + LLAMA_LOG_ERROR("The result will be garbage, so bailing out\n"); + LLAMA_LOG_ERROR("============================================================\n\n"); + throw std::runtime_error(format("Missing importance matrix for tensor %s in a very low-bit quantization", tensor->name)); + } + + float * f32_data; + + if (tensor->type == GGML_TYPE_F32) { + f32_data = (float *) tensor->data; + } else if (ggml_is_quantized(tensor->type) && !params->allow_requantize) { + throw std::runtime_error(format("requantizing from type %s is disabled", ggml_type_name(tensor->type))); + } else { + llama_tensor_dequantize_impl(tensor, f32_conv_buf, workers, nelements, nthread); + f32_data = (float *) f32_conv_buf.data(); + } + + LLAMA_LOG_INFO("converting to %s .. ", ggml_type_name(new_type)); + fflush(stdout); + + if (work.size() < (size_t)nelements * 4) { + work.resize(nelements * 4); // upper bound on size + } + new_data = work.data(); + + const int64_t n_per_row = tensor->ne[0]; + const int64_t nrows = tensor->ne[1]; + + static const int64_t min_chunk_size = 32 * 512; + const int64_t chunk_size = (n_per_row >= min_chunk_size ? n_per_row : n_per_row * ((min_chunk_size + n_per_row - 1)/n_per_row)); + + const int64_t nelements_matrix = tensor->ne[0] * tensor->ne[1]; + const int64_t nchunk = (nelements_matrix + chunk_size - 1)/chunk_size; + const int64_t nthread_use = nthread > 1 ? std::max((int64_t)1, std::min((int64_t)nthread, nchunk)) : 1; + + // quantize each expert separately since they have different importance matrices + new_size = 0; + for (int64_t i03 = 0; i03 < tensor->ne[2]; ++i03) { + const float * f32_data_03 = f32_data + i03 * nelements_matrix; + void * new_data_03 = (char *)new_data + ggml_row_size(new_type, n_per_row) * i03 * nrows; + const float * imatrix_03 = imatrix ? imatrix + i03 * n_per_row : nullptr; + + new_size += llama_tensor_quantize_impl(new_type, f32_data_03, new_data_03, chunk_size, nrows, n_per_row, imatrix_03, workers, nthread_use); + + // TODO: temporary sanity check that the F16 -> MXFP4 is lossless +#if 0 + if (new_type == GGML_TYPE_MXFP4) { + auto * x = f32_data_03; + + //LLAMA_LOG_INFO("nrows = %d, n_per_row = %d\n", nrows, n_per_row); + std::vector deq(nrows*n_per_row); + const ggml_type_traits * qtype = ggml_get_type_traits(new_type); + qtype->to_float(new_data_03, deq.data(), deq.size()); + + double err = 0.0f; + for (int i = 0; i < (int) deq.size(); ++i) { + err += fabsf(deq[i] - x[i]); + //if (fabsf(deq[i] - x[i]) > 0.00001 && i < 256) { + if (deq[i] != x[i]) { + LLAMA_LOG_INFO("deq[%d] = %f, x[%d] = %f\n", i, deq[i], i, x[i]); + } + } + //LLAMA_LOG_INFO("err = %f\n", err); + GGML_ASSERT(err == 0.00000); + } +#endif + } + LLAMA_LOG_INFO("size = %8.2f MiB -> %8.2f MiB\n", ggml_nbytes(tensor)/1024.0/1024.0, new_size/1024.0/1024.0); + } + total_size_org += ggml_nbytes(tensor); + total_size_new += new_size; + + // update the gguf meta data as we go + gguf_set_tensor_type(ctx_outs[cur_split].get(), name.c_str(), new_type); + GGML_ASSERT(gguf_get_tensor_size(ctx_outs[cur_split].get(), gguf_find_tensor(ctx_outs[cur_split].get(), name.c_str())) == new_size); + gguf_set_tensor_data(ctx_outs[cur_split].get(), name.c_str(), new_data); + + // write tensor data + padding + fout.write((const char *) new_data, new_size); + zeros(fout, GGML_PAD(new_size, align) - new_size); + } + close_ofstream(); + + LLAMA_LOG_INFO("%s: model size = %8.2f MiB\n", __func__, total_size_org/1024.0/1024.0); + LLAMA_LOG_INFO("%s: quant size = %8.2f MiB\n", __func__, total_size_new/1024.0/1024.0); + + if (qs.n_fallback > 0) { + LLAMA_LOG_WARN("%s: WARNING: %d of %d tensor(s) required fallback quantization\n", + __func__, qs.n_fallback, qs.n_k_quantized + qs.n_fallback); + } +} + +// +// interface implementation +// + +llama_model_quantize_params llama_model_quantize_default_params() { + llama_model_quantize_params result = { + /*.nthread =*/ 0, + /*.ftype =*/ LLAMA_FTYPE_MOSTLY_Q5_1, + /*.output_tensor_type =*/ GGML_TYPE_COUNT, + /*.token_embedding_type =*/ GGML_TYPE_COUNT, + /*.allow_requantize =*/ false, + /*.quantize_output_tensor =*/ true, + /*.only_copy =*/ false, + /*.pure =*/ false, + /*.keep_split =*/ false, + /*.imatrix =*/ nullptr, + /*.kv_overrides =*/ nullptr, + /*.tensor_type =*/ nullptr, + /*.prune_layers =*/ nullptr + }; + + return result; +} + +uint32_t llama_model_quantize( + const char * fname_inp, + const char * fname_out, + const llama_model_quantize_params * params) { + try { + llama_model_quantize_impl(fname_inp, fname_out, params); + } catch (const std::exception & err) { + LLAMA_LOG_ERROR("%s: failed to quantize: %s\n", __func__, err.what()); + return 1; + } + + return 0; +} -- cgit v1.2.3