mirror of
https://github.com/ggerganov/llama.cpp.git
synced 2024-12-26 19:34:35 +00:00
7909e8588d
Set default width to whatever the terminal is. Also fixed a small bug around default n_gpu_layers value. Signed-off-by: Eric Curtin <ecurtin@redhat.com>
912 lines
30 KiB
C++
912 lines
30 KiB
C++
#if defined(_WIN32)
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# include <windows.h>
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#else
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# include <sys/file.h>
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# include <sys/ioctl.h>
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# include <unistd.h>
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#endif
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#if defined(LLAMA_USE_CURL)
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# include <curl/curl.h>
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#endif
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#include <climits>
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#include <cstdarg>
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#include <cstdio>
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#include <cstring>
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#include <filesystem>
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#include <iostream>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "common.h"
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#include "json.hpp"
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#include "llama-cpp.h"
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GGML_ATTRIBUTE_FORMAT(1, 2)
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static std::string fmt(const char * fmt, ...) {
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va_list ap;
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va_list ap2;
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va_start(ap, fmt);
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va_copy(ap2, ap);
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const int size = vsnprintf(NULL, 0, fmt, ap);
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GGML_ASSERT(size >= 0 && size < INT_MAX); // NOLINT
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std::string buf;
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buf.resize(size);
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const int size2 = vsnprintf(const_cast<char *>(buf.data()), buf.size() + 1, fmt, ap2);
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GGML_ASSERT(size2 == size);
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va_end(ap2);
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va_end(ap);
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return buf;
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}
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GGML_ATTRIBUTE_FORMAT(1, 2)
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static int printe(const char * fmt, ...) {
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va_list args;
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va_start(args, fmt);
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const int ret = vfprintf(stderr, fmt, args);
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va_end(args);
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return ret;
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}
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class Opt {
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public:
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int init(int argc, const char ** argv) {
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// Parse arguments
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if (parse(argc, argv)) {
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printe("Error: Failed to parse arguments.\n");
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help();
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return 1;
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}
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// If help is requested, show help and exit
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if (help_) {
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help();
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return 2;
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}
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return 0; // Success
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}
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std::string model_;
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std::string user_;
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int context_size_ = -1, ngl_ = -1;
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bool verbose_ = false;
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private:
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bool help_ = false;
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bool parse_flag(const char ** argv, int i, const char * short_opt, const char * long_opt) {
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return strcmp(argv[i], short_opt) == 0 || strcmp(argv[i], long_opt) == 0;
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}
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int handle_option_with_value(int argc, const char ** argv, int & i, int & option_value) {
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if (i + 1 >= argc) {
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return 1;
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}
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option_value = std::atoi(argv[++i]);
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return 0;
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}
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int parse(int argc, const char ** argv) {
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bool options_parsing = true;
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for (int i = 1, positional_args_i = 0; i < argc; ++i) {
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if (options_parsing && (strcmp(argv[i], "-c") == 0 || strcmp(argv[i], "--context-size") == 0)) {
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if (handle_option_with_value(argc, argv, i, context_size_) == 1) {
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return 1;
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}
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} else if (options_parsing && (strcmp(argv[i], "-n") == 0 || strcmp(argv[i], "--ngl") == 0)) {
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if (handle_option_with_value(argc, argv, i, ngl_) == 1) {
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return 1;
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}
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} else if (options_parsing &&
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(parse_flag(argv, i, "-v", "--verbose") || parse_flag(argv, i, "-v", "--log-verbose"))) {
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verbose_ = true;
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} else if (options_parsing && parse_flag(argv, i, "-h", "--help")) {
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help_ = true;
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return 0;
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} else if (options_parsing && strcmp(argv[i], "--") == 0) {
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options_parsing = false;
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} else if (positional_args_i == 0) {
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if (!argv[i][0] || argv[i][0] == '-') {
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return 1;
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}
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++positional_args_i;
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model_ = argv[i];
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} else if (positional_args_i == 1) {
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++positional_args_i;
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user_ = argv[i];
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} else {
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user_ += " " + std::string(argv[i]);
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}
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}
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return 0;
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}
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void help() const {
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printf(
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"Description:\n"
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" Runs a llm\n"
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"\n"
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"Usage:\n"
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" llama-run [options] model [prompt]\n"
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"\n"
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"Options:\n"
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" -c, --context-size <value>\n"
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" Context size (default: %d)\n"
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" -n, --ngl <value>\n"
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" Number of GPU layers (default: %d)\n"
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" -v, --verbose, --log-verbose\n"
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" Set verbosity level to infinity (i.e. log all messages, useful for debugging)\n"
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" -h, --help\n"
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" Show help message\n"
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"\n"
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"Commands:\n"
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" model\n"
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" Model is a string with an optional prefix of \n"
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" huggingface:// (hf://), ollama://, https:// or file://.\n"
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" If no protocol is specified and a file exists in the specified\n"
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" path, file:// is assumed, otherwise if a file does not exist in\n"
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" the specified path, ollama:// is assumed. Models that are being\n"
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" pulled are downloaded with .partial extension while being\n"
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" downloaded and then renamed as the file without the .partial\n"
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" extension when complete.\n"
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"\n"
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"Examples:\n"
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" llama-run llama3\n"
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" llama-run ollama://granite-code\n"
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" llama-run ollama://smollm:135m\n"
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" llama-run hf://QuantFactory/SmolLM-135M-GGUF/SmolLM-135M.Q2_K.gguf\n"
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" llama-run "
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"huggingface://bartowski/SmolLM-1.7B-Instruct-v0.2-GGUF/SmolLM-1.7B-Instruct-v0.2-IQ3_M.gguf\n"
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" llama-run https://example.com/some-file1.gguf\n"
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" llama-run some-file2.gguf\n"
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" llama-run file://some-file3.gguf\n"
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" llama-run --ngl 999 some-file4.gguf\n"
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" llama-run --ngl 999 some-file5.gguf Hello World\n",
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llama_context_default_params().n_batch, llama_model_default_params().n_gpu_layers);
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}
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};
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struct progress_data {
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size_t file_size = 0;
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std::chrono::steady_clock::time_point start_time = std::chrono::steady_clock::now();
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bool printed = false;
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};
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static int get_terminal_width() {
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#if defined(_WIN32)
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
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return csbi.srWindow.Right - csbi.srWindow.Left + 1;
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#else
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struct winsize w;
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ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
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return w.ws_col;
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#endif
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}
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#ifdef LLAMA_USE_CURL
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class File {
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public:
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FILE * file = nullptr;
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FILE * open(const std::string & filename, const char * mode) {
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file = fopen(filename.c_str(), mode);
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return file;
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}
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int lock() {
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if (file) {
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# ifdef _WIN32
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fd = _fileno(file);
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hFile = (HANDLE) _get_osfhandle(fd);
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if (hFile == INVALID_HANDLE_VALUE) {
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fd = -1;
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return 1;
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}
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OVERLAPPED overlapped = { 0 };
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if (!LockFileEx(hFile, LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY, 0, MAXDWORD, MAXDWORD,
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&overlapped)) {
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fd = -1;
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return 1;
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}
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# else
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fd = fileno(file);
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if (flock(fd, LOCK_EX | LOCK_NB) != 0) {
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fd = -1;
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return 1;
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}
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# endif
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}
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return 0;
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}
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~File() {
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if (fd >= 0) {
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# ifdef _WIN32
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if (hFile != INVALID_HANDLE_VALUE) {
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OVERLAPPED overlapped = { 0 };
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UnlockFileEx(hFile, 0, MAXDWORD, MAXDWORD, &overlapped);
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}
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# else
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flock(fd, LOCK_UN);
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# endif
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}
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if (file) {
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fclose(file);
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}
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}
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private:
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int fd = -1;
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# ifdef _WIN32
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HANDLE hFile;
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# endif
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};
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class HttpClient {
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public:
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int init(const std::string & url, const std::vector<std::string> & headers, const std::string & output_file,
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const bool progress, std::string * response_str = nullptr) {
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std::string output_file_partial;
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curl = curl_easy_init();
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if (!curl) {
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return 1;
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}
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progress_data data;
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File out;
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if (!output_file.empty()) {
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output_file_partial = output_file + ".partial";
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if (!out.open(output_file_partial, "ab")) {
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printe("Failed to open file\n");
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return 1;
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}
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if (out.lock()) {
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printe("Failed to exclusively lock file\n");
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return 1;
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}
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}
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set_write_options(response_str, out);
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data.file_size = set_resume_point(output_file_partial);
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set_progress_options(progress, data);
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set_headers(headers);
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perform(url);
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if (!output_file.empty()) {
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std::filesystem::rename(output_file_partial, output_file);
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}
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return 0;
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}
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~HttpClient() {
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if (chunk) {
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curl_slist_free_all(chunk);
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}
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if (curl) {
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curl_easy_cleanup(curl);
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}
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}
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private:
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CURL * curl = nullptr;
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struct curl_slist * chunk = nullptr;
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void set_write_options(std::string * response_str, const File & out) {
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if (response_str) {
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, capture_data);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, response_str);
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} else {
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, out.file);
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}
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}
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size_t set_resume_point(const std::string & output_file) {
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size_t file_size = 0;
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if (std::filesystem::exists(output_file)) {
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file_size = std::filesystem::file_size(output_file);
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curl_easy_setopt(curl, CURLOPT_RESUME_FROM_LARGE, static_cast<curl_off_t>(file_size));
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}
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return file_size;
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}
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void set_progress_options(bool progress, progress_data & data) {
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if (progress) {
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curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
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curl_easy_setopt(curl, CURLOPT_XFERINFODATA, &data);
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curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, update_progress);
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}
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}
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void set_headers(const std::vector<std::string> & headers) {
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if (!headers.empty()) {
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if (chunk) {
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curl_slist_free_all(chunk);
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chunk = 0;
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}
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for (const auto & header : headers) {
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chunk = curl_slist_append(chunk, header.c_str());
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}
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curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);
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}
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}
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void perform(const std::string & url) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
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curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
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curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
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curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L);
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res = curl_easy_perform(curl);
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if (res != CURLE_OK) {
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printe("curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
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}
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}
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static std::string human_readable_time(double seconds) {
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int hrs = static_cast<int>(seconds) / 3600;
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int mins = (static_cast<int>(seconds) % 3600) / 60;
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int secs = static_cast<int>(seconds) % 60;
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if (hrs > 0) {
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return fmt("%dh %02dm %02ds", hrs, mins, secs);
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} else if (mins > 0) {
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return fmt("%dm %02ds", mins, secs);
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} else {
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return fmt("%ds", secs);
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}
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}
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static std::string human_readable_size(curl_off_t size) {
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static const char * suffix[] = { "B", "KB", "MB", "GB", "TB" };
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char length = sizeof(suffix) / sizeof(suffix[0]);
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int i = 0;
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double dbl_size = size;
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if (size > 1024) {
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for (i = 0; (size / 1024) > 0 && i < length - 1; i++, size /= 1024) {
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dbl_size = size / 1024.0;
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}
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}
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return fmt("%.2f %s", dbl_size, suffix[i]);
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}
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static int update_progress(void * ptr, curl_off_t total_to_download, curl_off_t now_downloaded, curl_off_t,
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curl_off_t) {
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progress_data * data = static_cast<progress_data *>(ptr);
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if (total_to_download <= 0) {
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return 0;
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}
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total_to_download += data->file_size;
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const curl_off_t now_downloaded_plus_file_size = now_downloaded + data->file_size;
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const curl_off_t percentage = calculate_percentage(now_downloaded_plus_file_size, total_to_download);
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std::string progress_prefix = generate_progress_prefix(percentage);
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const double speed = calculate_speed(now_downloaded, data->start_time);
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const double tim = (total_to_download - now_downloaded) / speed;
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std::string progress_suffix =
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generate_progress_suffix(now_downloaded_plus_file_size, total_to_download, speed, tim);
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int progress_bar_width = calculate_progress_bar_width(progress_prefix, progress_suffix);
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std::string progress_bar;
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generate_progress_bar(progress_bar_width, percentage, progress_bar);
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print_progress(progress_prefix, progress_bar, progress_suffix);
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data->printed = true;
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return 0;
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}
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static curl_off_t calculate_percentage(curl_off_t now_downloaded_plus_file_size, curl_off_t total_to_download) {
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return (now_downloaded_plus_file_size * 100) / total_to_download;
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}
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static std::string generate_progress_prefix(curl_off_t percentage) { return fmt("%3ld%% |", percentage); }
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static double calculate_speed(curl_off_t now_downloaded, const std::chrono::steady_clock::time_point & start_time) {
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const auto now = std::chrono::steady_clock::now();
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const std::chrono::duration<double> elapsed_seconds = now - start_time;
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return now_downloaded / elapsed_seconds.count();
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}
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static std::string generate_progress_suffix(curl_off_t now_downloaded_plus_file_size, curl_off_t total_to_download,
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double speed, double estimated_time) {
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const int width = 10;
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return fmt("%*s/%*s%*s/s%*s", width, human_readable_size(now_downloaded_plus_file_size).c_str(), width,
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human_readable_size(total_to_download).c_str(), width, human_readable_size(speed).c_str(), width,
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human_readable_time(estimated_time).c_str());
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}
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static int calculate_progress_bar_width(const std::string & progress_prefix, const std::string & progress_suffix) {
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int progress_bar_width = get_terminal_width() - progress_prefix.size() - progress_suffix.size() - 3;
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if (progress_bar_width < 1) {
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progress_bar_width = 1;
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}
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return progress_bar_width;
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}
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static std::string generate_progress_bar(int progress_bar_width, curl_off_t percentage,
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std::string & progress_bar) {
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const curl_off_t pos = (percentage * progress_bar_width) / 100;
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for (int i = 0; i < progress_bar_width; ++i) {
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progress_bar.append((i < pos) ? "█" : " ");
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}
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return progress_bar;
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}
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static void print_progress(const std::string & progress_prefix, const std::string & progress_bar,
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const std::string & progress_suffix) {
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printe("\r%*s\r%s%s| %s", get_terminal_width(), " ", progress_prefix.c_str(), progress_bar.c_str(),
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progress_suffix.c_str());
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}
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// Function to write data to a file
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static size_t write_data(void * ptr, size_t size, size_t nmemb, void * stream) {
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FILE * out = static_cast<FILE *>(stream);
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return fwrite(ptr, size, nmemb, out);
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}
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// Function to capture data into a string
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static size_t capture_data(void * ptr, size_t size, size_t nmemb, void * stream) {
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std::string * str = static_cast<std::string *>(stream);
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str->append(static_cast<char *>(ptr), size * nmemb);
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return size * nmemb;
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}
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};
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#endif
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class LlamaData {
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public:
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llama_model_ptr model;
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llama_sampler_ptr sampler;
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llama_context_ptr context;
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std::vector<llama_chat_message> messages;
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std::vector<std::string> msg_strs;
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std::vector<char> fmtted;
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int init(Opt & opt) {
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model = initialize_model(opt);
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|
if (!model) {
|
|
return 1;
|
|
}
|
|
|
|
context = initialize_context(model, opt.context_size_);
|
|
if (!context) {
|
|
return 1;
|
|
}
|
|
|
|
sampler = initialize_sampler();
|
|
return 0;
|
|
}
|
|
|
|
private:
|
|
#ifdef LLAMA_USE_CURL
|
|
int download(const std::string & url, const std::vector<std::string> & headers, const std::string & output_file,
|
|
const bool progress, std::string * response_str = nullptr) {
|
|
HttpClient http;
|
|
if (http.init(url, headers, output_file, progress, response_str)) {
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
int download(const std::string &, const std::vector<std::string> &, const std::string &, const bool,
|
|
std::string * = nullptr) {
|
|
printe("%s: llama.cpp built without libcurl, downloading from an url not supported.\n", __func__);
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
int huggingface_dl(const std::string & model, const std::vector<std::string> headers, const std::string & bn) {
|
|
// Find the second occurrence of '/' after protocol string
|
|
size_t pos = model.find('/');
|
|
pos = model.find('/', pos + 1);
|
|
if (pos == std::string::npos) {
|
|
return 1;
|
|
}
|
|
|
|
const std::string hfr = model.substr(0, pos);
|
|
const std::string hff = model.substr(pos + 1);
|
|
const std::string url = "https://huggingface.co/" + hfr + "/resolve/main/" + hff;
|
|
return download(url, headers, bn, true);
|
|
}
|
|
|
|
int ollama_dl(std::string & model, const std::vector<std::string> headers, const std::string & bn) {
|
|
if (model.find('/') == std::string::npos) {
|
|
model = "library/" + model;
|
|
}
|
|
|
|
std::string model_tag = "latest";
|
|
size_t colon_pos = model.find(':');
|
|
if (colon_pos != std::string::npos) {
|
|
model_tag = model.substr(colon_pos + 1);
|
|
model = model.substr(0, colon_pos);
|
|
}
|
|
|
|
std::string manifest_url = "https://registry.ollama.ai/v2/" + model + "/manifests/" + model_tag;
|
|
std::string manifest_str;
|
|
const int ret = download(manifest_url, headers, "", false, &manifest_str);
|
|
if (ret) {
|
|
return ret;
|
|
}
|
|
|
|
nlohmann::json manifest = nlohmann::json::parse(manifest_str);
|
|
std::string layer;
|
|
for (const auto & l : manifest["layers"]) {
|
|
if (l["mediaType"] == "application/vnd.ollama.image.model") {
|
|
layer = l["digest"];
|
|
break;
|
|
}
|
|
}
|
|
|
|
std::string blob_url = "https://registry.ollama.ai/v2/" + model + "/blobs/" + layer;
|
|
return download(blob_url, headers, bn, true);
|
|
}
|
|
|
|
std::string basename(const std::string & path) {
|
|
const size_t pos = path.find_last_of("/\\");
|
|
if (pos == std::string::npos) {
|
|
return path;
|
|
}
|
|
|
|
return path.substr(pos + 1);
|
|
}
|
|
|
|
int remove_proto(std::string & model_) {
|
|
const std::string::size_type pos = model_.find("://");
|
|
if (pos == std::string::npos) {
|
|
return 1;
|
|
}
|
|
|
|
model_ = model_.substr(pos + 3); // Skip past "://"
|
|
return 0;
|
|
}
|
|
|
|
int resolve_model(std::string & model_) {
|
|
int ret = 0;
|
|
if (string_starts_with(model_, "file://") || std::filesystem::exists(model_)) {
|
|
remove_proto(model_);
|
|
|
|
return ret;
|
|
}
|
|
|
|
const std::string bn = basename(model_);
|
|
const std::vector<std::string> headers = { "--header",
|
|
"Accept: application/vnd.docker.distribution.manifest.v2+json" };
|
|
if (string_starts_with(model_, "hf://") || string_starts_with(model_, "huggingface://")) {
|
|
remove_proto(model_);
|
|
ret = huggingface_dl(model_, headers, bn);
|
|
} else if (string_starts_with(model_, "ollama://")) {
|
|
remove_proto(model_);
|
|
ret = ollama_dl(model_, headers, bn);
|
|
} else if (string_starts_with(model_, "https://")) {
|
|
download(model_, headers, bn, true);
|
|
} else {
|
|
ret = ollama_dl(model_, headers, bn);
|
|
}
|
|
|
|
model_ = bn;
|
|
|
|
return ret;
|
|
}
|
|
|
|
// Initializes the model and returns a unique pointer to it
|
|
llama_model_ptr initialize_model(Opt & opt) {
|
|
ggml_backend_load_all();
|
|
llama_model_params model_params = llama_model_default_params();
|
|
model_params.n_gpu_layers = opt.ngl_ >= 0 ? opt.ngl_ : model_params.n_gpu_layers;
|
|
resolve_model(opt.model_);
|
|
printe(
|
|
"\r%*s"
|
|
"\rLoading model",
|
|
get_terminal_width(), " ");
|
|
llama_model_ptr model(llama_load_model_from_file(opt.model_.c_str(), model_params));
|
|
if (!model) {
|
|
printe("%s: error: unable to load model from file: %s\n", __func__, opt.model_.c_str());
|
|
}
|
|
|
|
printe("\r%*s\r", static_cast<int>(sizeof("Loading model")), " ");
|
|
return model;
|
|
}
|
|
|
|
// Initializes the context with the specified parameters
|
|
llama_context_ptr initialize_context(const llama_model_ptr & model, const int n_ctx) {
|
|
llama_context_params ctx_params = llama_context_default_params();
|
|
ctx_params.n_ctx = ctx_params.n_batch = n_ctx >= 0 ? n_ctx : ctx_params.n_batch;
|
|
llama_context_ptr context(llama_new_context_with_model(model.get(), ctx_params));
|
|
if (!context) {
|
|
printe("%s: error: failed to create the llama_context\n", __func__);
|
|
}
|
|
|
|
return context;
|
|
}
|
|
|
|
// Initializes and configures the sampler
|
|
llama_sampler_ptr initialize_sampler() {
|
|
llama_sampler_ptr sampler(llama_sampler_chain_init(llama_sampler_chain_default_params()));
|
|
llama_sampler_chain_add(sampler.get(), llama_sampler_init_min_p(0.05f, 1));
|
|
llama_sampler_chain_add(sampler.get(), llama_sampler_init_temp(0.8f));
|
|
llama_sampler_chain_add(sampler.get(), llama_sampler_init_dist(LLAMA_DEFAULT_SEED));
|
|
|
|
return sampler;
|
|
}
|
|
};
|
|
|
|
// Add a message to `messages` and store its content in `msg_strs`
|
|
static void add_message(const char * role, const std::string & text, LlamaData & llama_data) {
|
|
llama_data.msg_strs.push_back(std::move(text));
|
|
llama_data.messages.push_back({ role, llama_data.msg_strs.back().c_str() });
|
|
}
|
|
|
|
// Function to apply the chat template and resize `formatted` if needed
|
|
static int apply_chat_template(LlamaData & llama_data, const bool append) {
|
|
int result = llama_chat_apply_template(
|
|
llama_data.model.get(), nullptr, llama_data.messages.data(), llama_data.messages.size(), append,
|
|
append ? llama_data.fmtted.data() : nullptr, append ? llama_data.fmtted.size() : 0);
|
|
if (append && result > static_cast<int>(llama_data.fmtted.size())) {
|
|
llama_data.fmtted.resize(result);
|
|
result = llama_chat_apply_template(llama_data.model.get(), nullptr, llama_data.messages.data(),
|
|
llama_data.messages.size(), append, llama_data.fmtted.data(),
|
|
llama_data.fmtted.size());
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Function to tokenize the prompt
|
|
static int tokenize_prompt(const llama_model_ptr & model, const std::string & prompt,
|
|
std::vector<llama_token> & prompt_tokens) {
|
|
const int n_prompt_tokens = -llama_tokenize(model.get(), prompt.c_str(), prompt.size(), NULL, 0, true, true);
|
|
prompt_tokens.resize(n_prompt_tokens);
|
|
if (llama_tokenize(model.get(), prompt.c_str(), prompt.size(), prompt_tokens.data(), prompt_tokens.size(), true,
|
|
true) < 0) {
|
|
printe("failed to tokenize the prompt\n");
|
|
return -1;
|
|
}
|
|
|
|
return n_prompt_tokens;
|
|
}
|
|
|
|
// Check if we have enough space in the context to evaluate this batch
|
|
static int check_context_size(const llama_context_ptr & ctx, const llama_batch & batch) {
|
|
const int n_ctx = llama_n_ctx(ctx.get());
|
|
const int n_ctx_used = llama_get_kv_cache_used_cells(ctx.get());
|
|
if (n_ctx_used + batch.n_tokens > n_ctx) {
|
|
printf("\033[0m\n");
|
|
printe("context size exceeded\n");
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// convert the token to a string
|
|
static int convert_token_to_string(const llama_model_ptr & model, const llama_token token_id, std::string & piece) {
|
|
char buf[256];
|
|
int n = llama_token_to_piece(model.get(), token_id, buf, sizeof(buf), 0, true);
|
|
if (n < 0) {
|
|
printe("failed to convert token to piece\n");
|
|
return 1;
|
|
}
|
|
|
|
piece = std::string(buf, n);
|
|
return 0;
|
|
}
|
|
|
|
static void print_word_and_concatenate_to_response(const std::string & piece, std::string & response) {
|
|
printf("%s", piece.c_str());
|
|
fflush(stdout);
|
|
response += piece;
|
|
}
|
|
|
|
// helper function to evaluate a prompt and generate a response
|
|
static int generate(LlamaData & llama_data, const std::string & prompt, std::string & response) {
|
|
std::vector<llama_token> tokens;
|
|
if (tokenize_prompt(llama_data.model, prompt, tokens) < 0) {
|
|
return 1;
|
|
}
|
|
|
|
// prepare a batch for the prompt
|
|
llama_batch batch = llama_batch_get_one(tokens.data(), tokens.size());
|
|
llama_token new_token_id;
|
|
while (true) {
|
|
check_context_size(llama_data.context, batch);
|
|
if (llama_decode(llama_data.context.get(), batch)) {
|
|
printe("failed to decode\n");
|
|
return 1;
|
|
}
|
|
|
|
// sample the next token, check is it an end of generation?
|
|
new_token_id = llama_sampler_sample(llama_data.sampler.get(), llama_data.context.get(), -1);
|
|
if (llama_token_is_eog(llama_data.model.get(), new_token_id)) {
|
|
break;
|
|
}
|
|
|
|
std::string piece;
|
|
if (convert_token_to_string(llama_data.model, new_token_id, piece)) {
|
|
return 1;
|
|
}
|
|
|
|
print_word_and_concatenate_to_response(piece, response);
|
|
|
|
// prepare the next batch with the sampled token
|
|
batch = llama_batch_get_one(&new_token_id, 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int read_user_input(std::string & user) {
|
|
std::getline(std::cin, user);
|
|
return user.empty(); // Should have data in happy path
|
|
}
|
|
|
|
// Function to generate a response based on the prompt
|
|
static int generate_response(LlamaData & llama_data, const std::string & prompt, std::string & response,
|
|
const bool stdout_a_terminal) {
|
|
// Set response color
|
|
if (stdout_a_terminal) {
|
|
printf("\033[33m");
|
|
}
|
|
|
|
if (generate(llama_data, prompt, response)) {
|
|
printe("failed to generate response\n");
|
|
return 1;
|
|
}
|
|
|
|
// End response with color reset and newline
|
|
printf("\n%s", stdout_a_terminal ? "\033[0m" : "");
|
|
return 0;
|
|
}
|
|
|
|
// Helper function to apply the chat template and handle errors
|
|
static int apply_chat_template_with_error_handling(LlamaData & llama_data, const bool append, int & output_length) {
|
|
const int new_len = apply_chat_template(llama_data, append);
|
|
if (new_len < 0) {
|
|
printe("failed to apply the chat template\n");
|
|
return -1;
|
|
}
|
|
|
|
output_length = new_len;
|
|
return 0;
|
|
}
|
|
|
|
// Helper function to handle user input
|
|
static int handle_user_input(std::string & user_input, const std::string & user_) {
|
|
if (!user_.empty()) {
|
|
user_input = user_;
|
|
return 0; // No need for interactive input
|
|
}
|
|
|
|
printf(
|
|
"\r%*s"
|
|
"\r\033[32m> \033[0m",
|
|
get_terminal_width(), " ");
|
|
return read_user_input(user_input); // Returns true if input ends the loop
|
|
}
|
|
|
|
static bool is_stdin_a_terminal() {
|
|
#if defined(_WIN32)
|
|
HANDLE hStdin = GetStdHandle(STD_INPUT_HANDLE);
|
|
DWORD mode;
|
|
return GetConsoleMode(hStdin, &mode);
|
|
#else
|
|
return isatty(STDIN_FILENO);
|
|
#endif
|
|
}
|
|
|
|
static bool is_stdout_a_terminal() {
|
|
#if defined(_WIN32)
|
|
HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
|
|
DWORD mode;
|
|
return GetConsoleMode(hStdout, &mode);
|
|
#else
|
|
return isatty(STDOUT_FILENO);
|
|
#endif
|
|
}
|
|
|
|
// Function to tokenize the prompt
|
|
static int chat_loop(LlamaData & llama_data, const std::string & user_) {
|
|
int prev_len = 0;
|
|
llama_data.fmtted.resize(llama_n_ctx(llama_data.context.get()));
|
|
static const bool stdout_a_terminal = is_stdout_a_terminal();
|
|
while (true) {
|
|
// Get user input
|
|
std::string user_input;
|
|
while (handle_user_input(user_input, user_)) {
|
|
}
|
|
|
|
add_message("user", user_.empty() ? user_input : user_, llama_data);
|
|
int new_len;
|
|
if (apply_chat_template_with_error_handling(llama_data, true, new_len) < 0) {
|
|
return 1;
|
|
}
|
|
|
|
std::string prompt(llama_data.fmtted.begin() + prev_len, llama_data.fmtted.begin() + new_len);
|
|
std::string response;
|
|
if (generate_response(llama_data, prompt, response, stdout_a_terminal)) {
|
|
return 1;
|
|
}
|
|
|
|
if (!user_.empty()) {
|
|
break;
|
|
}
|
|
|
|
add_message("assistant", response, llama_data);
|
|
if (apply_chat_template_with_error_handling(llama_data, false, prev_len) < 0) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void log_callback(const enum ggml_log_level level, const char * text, void * p) {
|
|
const Opt * opt = static_cast<Opt *>(p);
|
|
if (opt->verbose_ || level == GGML_LOG_LEVEL_ERROR) {
|
|
printe("%s", text);
|
|
}
|
|
}
|
|
|
|
static std::string read_pipe_data() {
|
|
std::ostringstream result;
|
|
result << std::cin.rdbuf(); // Read all data from std::cin
|
|
return result.str();
|
|
}
|
|
|
|
int main(int argc, const char ** argv) {
|
|
Opt opt;
|
|
const int ret = opt.init(argc, argv);
|
|
if (ret == 2) {
|
|
return 0;
|
|
} else if (ret) {
|
|
return 1;
|
|
}
|
|
|
|
if (!is_stdin_a_terminal()) {
|
|
if (!opt.user_.empty()) {
|
|
opt.user_ += "\n\n";
|
|
}
|
|
|
|
opt.user_ += read_pipe_data();
|
|
}
|
|
|
|
llama_log_set(log_callback, &opt);
|
|
LlamaData llama_data;
|
|
if (llama_data.init(opt)) {
|
|
return 1;
|
|
}
|
|
|
|
if (chat_loop(llama_data, opt.user_)) {
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|