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Diffstat (limited to 'examples/gguf/gguf.cpp')
| -rw-r--r-- | examples/gguf/gguf.cpp | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/examples/gguf/gguf.cpp b/examples/gguf/gguf.cpp new file mode 100644 index 00000000..dee00df8 --- /dev/null +++ b/examples/gguf/gguf.cpp @@ -0,0 +1,246 @@ +#include "ggml.h" +#include "llama.h" + +#include <cstdio> +#include <cinttypes> +#include <string> +#include <sstream> +#include <fstream> +#include <vector> + +#undef MIN +#undef MAX +#define MIN(a, b) ((a) < (b) ? (a) : (b)) +#define MAX(a, b) ((a) > (b) ? (a) : (b)) + +template<typename T> +static std::string to_string(const T & val) { + std::stringstream ss; + ss << val; + return ss.str(); +} + +bool gguf_ex_write(const std::string & fname) { + struct gguf_context * ctx = gguf_init_empty(); + + gguf_set_val_u8 (ctx, "some.parameter.uint8", 0x12); + gguf_set_val_i8 (ctx, "some.parameter.int8", -0x13); + gguf_set_val_u16 (ctx, "some.parameter.uint16", 0x1234); + gguf_set_val_i16 (ctx, "some.parameter.int16", -0x1235); + gguf_set_val_u32 (ctx, "some.parameter.uint32", 0x12345678); + gguf_set_val_i32 (ctx, "some.parameter.int32", -0x12345679); + gguf_set_val_f32 (ctx, "some.parameter.float32", 0.123456789f); + gguf_set_val_bool(ctx, "some.parameter.bool", true); + gguf_set_val_str (ctx, "some.parameter.string", "hello world"); + + gguf_set_arr_data(ctx, "some.parameter.arr.i16", GGUF_TYPE_INT16, std::vector<int16_t>{ 1, 2, 3, 4, }.data(), 4); + gguf_set_arr_data(ctx, "some.parameter.arr.f32", GGUF_TYPE_FLOAT32, std::vector<float>{ 3.145f, 2.718f, 1.414f, }.data(), 3); + gguf_set_arr_str (ctx, "some.parameter.arr.str", std::vector<const char *>{ "hello", "world", "!" }.data(), 3); + + struct ggml_init_params params = { + /*.mem_size =*/ 128ull*1024ull*1024ull, + /*.mem_buffer =*/ NULL, + /*.no_alloc =*/ false, + }; + + struct ggml_context * ctx_data = ggml_init(params); + + const int n_tensors = 10; + + // tensor infos + for (int i = 0; i < n_tensors; ++i) { + const std::string name = "tensor_" + to_string(i); + + int64_t ne[GGML_MAX_DIMS] = { 1 }; + int32_t n_dims = rand() % GGML_MAX_DIMS + 1; + + for (int j = 0; j < n_dims; ++j) { + ne[j] = rand() % 10 + 1; + } + + struct ggml_tensor * cur = ggml_new_tensor(ctx_data, GGML_TYPE_F32, n_dims, ne); + ggml_set_name(cur, name.c_str()); + + { + float * data = (float *) cur->data; + for (int j = 0; j < ggml_nelements(cur); ++j) { + data[j] = 100 + i; + } + } + + gguf_add_tensor(ctx, cur); + } + + gguf_write_to_file(ctx, fname.c_str(), false); + + fprintf(stdout, "%s: wrote file '%s;\n", __func__, fname.c_str()); + + ggml_free(ctx_data); + gguf_free(ctx); + + return true; +} + +// just read tensor info +bool gguf_ex_read_0(const std::string & fname) { + struct gguf_init_params params = { + /*.no_alloc = */ false, + /*.ctx = */ NULL, + }; + + struct gguf_context * ctx = gguf_init_from_file(fname.c_str(), params); + + fprintf(stdout, "%s: version: %d\n", __func__, gguf_get_version(ctx)); + fprintf(stdout, "%s: alignment: %zu\n", __func__, gguf_get_alignment(ctx)); + fprintf(stdout, "%s: data offset: %zu\n", __func__, gguf_get_data_offset(ctx)); + + // kv + { + const int n_kv = gguf_get_n_kv(ctx); + + fprintf(stdout, "%s: n_kv: %d\n", __func__, n_kv); + + for (int i = 0; i < n_kv; ++i) { + const char * key = gguf_get_key(ctx, i); + + fprintf(stdout, "%s: kv[%d]: key = %s\n", __func__, i, key); + } + } + + // find kv string + { + const char * findkey = "some.parameter.string"; + + const int keyidx = gguf_find_key(ctx, findkey); + if (keyidx == -1) { + fprintf(stdout, "%s: find key: %s not found.\n", __func__, findkey); + } else { + const char * key_value = gguf_get_val_str(ctx, keyidx); + fprintf(stdout, "%s: find key: %s found, kv[%d] value = %s\n", __func__, findkey, keyidx, key_value); + } + } + + // tensor info + { + const int n_tensors = gguf_get_n_tensors(ctx); + + fprintf(stdout, "%s: n_tensors: %d\n", __func__, n_tensors); + + for (int i = 0; i < n_tensors; ++i) { + const char * name = gguf_get_tensor_name (ctx, i); + const size_t offset = gguf_get_tensor_offset(ctx, i); + + fprintf(stdout, "%s: tensor[%d]: name = %s, offset = %zu\n", __func__, i, name, offset); + } + } + + gguf_free(ctx); + + return true; +} + +// read and create ggml_context containing the tensors and their data +bool gguf_ex_read_1(const std::string & fname) { + struct ggml_context * ctx_data = NULL; + + struct gguf_init_params params = { + /*.no_alloc = */ false, + /*.ctx = */ &ctx_data, + }; + + struct gguf_context * ctx = gguf_init_from_file(fname.c_str(), params); + + fprintf(stdout, "%s: version: %d\n", __func__, gguf_get_version(ctx)); + fprintf(stdout, "%s: alignment: %zu\n", __func__, gguf_get_alignment(ctx)); + fprintf(stdout, "%s: data offset: %zu\n", __func__, gguf_get_data_offset(ctx)); + + // kv + { + const int n_kv = gguf_get_n_kv(ctx); + + fprintf(stdout, "%s: n_kv: %d\n", __func__, n_kv); + + for (int i = 0; i < n_kv; ++i) { + const char * key = gguf_get_key(ctx, i); + + fprintf(stdout, "%s: kv[%d]: key = %s\n", __func__, i, key); + } + } + + // tensor info + { + const int n_tensors = gguf_get_n_tensors(ctx); + + fprintf(stdout, "%s: n_tensors: %d\n", __func__, n_tensors); + + for (int i = 0; i < n_tensors; ++i) { + const char * name = gguf_get_tensor_name (ctx, i); + const size_t offset = gguf_get_tensor_offset(ctx, i); + + fprintf(stdout, "%s: tensor[%d]: name = %s, offset = %zu\n", __func__, i, name, offset); + } + } + + // data + { + const int n_tensors = gguf_get_n_tensors(ctx); + + for (int i = 0; i < n_tensors; ++i) { + fprintf(stdout, "%s: reading tensor %d data\n", __func__, i); + + const char * name = gguf_get_tensor_name(ctx, i); + + struct ggml_tensor * cur = ggml_get_tensor(ctx_data, name); + + fprintf(stdout, "%s: tensor[%d]: n_dims = %d, name = %s, data = %p\n", __func__, i, cur->n_dims, cur->name, cur->data); + + // print first 10 elements + const float * data = (const float *) cur->data; + + printf("%s data[:10] : ", name); + for (int j = 0; j < MIN(10, ggml_nelements(cur)); ++j) { + printf("%f ", data[j]); + } + printf("\n\n"); + + // check data + { + const float * data = (const float *) cur->data; + for (int j = 0; j < ggml_nelements(cur); ++j) { + if (data[j] != 100 + i) { + fprintf(stderr, "%s: tensor[%d]: data[%d] = %f\n", __func__, i, j, data[j]); + return false; + } + } + } + } + } + + fprintf(stdout, "%s: ctx_data size: %zu\n", __func__, ggml_get_mem_size(ctx_data)); + + ggml_free(ctx_data); + gguf_free(ctx); + + return true; +} + +int main(int argc, char ** argv) { + if (argc < 3) { + fprintf(stdout, "usage: %s data.gguf r|w\n", argv[0]); + return -1; + } + + const std::string fname(argv[1]); + const std::string mode (argv[2]); + + GGML_ASSERT((mode == "r" || mode == "w") && "mode must be r or w"); + + if (mode == "w") { + GGML_ASSERT(gguf_ex_write(fname) && "failed to write gguf file"); + } else if (mode == "r") { + GGML_ASSERT(gguf_ex_read_0(fname) && "failed to read gguf file"); + GGML_ASSERT(gguf_ex_read_1(fname) && "failed to read gguf file"); + } + + return 0; +} |