bench.wasm : same as "bench" but runs in the browser (#89)
Georgi Gerganov
2 years ago
parent
85c9ac18b5
commit
fcf515de60
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#
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# libbench
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#
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set(TARGET libbench)
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add_executable(${TARGET}
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emscripten.cpp
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)
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target_link_libraries(${TARGET} PRIVATE
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whisper
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)
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unset(EXTRA_FLAGS)
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if (WHISPER_WASM_SINGLE_FILE)
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set(EXTRA_FLAGS "-s SINGLE_FILE=1")
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message(STATUS "Embedding WASM inside bench.js")
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add_custom_command(
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TARGET ${TARGET} POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E copy
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${CMAKE_BINARY_DIR}/bin/libbench.js
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${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/bench.wasm/bench.js
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)
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endif()
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set_target_properties(${TARGET} PROPERTIES LINK_FLAGS " \
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--bind \
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-s USE_PTHREADS=1 \
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-s PTHREAD_POOL_SIZE=8 \
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-s INITIAL_MEMORY=1024MB \
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-s TOTAL_MEMORY=1024MB \
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-s FORCE_FILESYSTEM=1 \
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-s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap']\" \
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${EXTRA_FLAGS} \
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")
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#
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# bench.wasm
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#
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set(TARGET bench.wasm)
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/index-tmpl.html ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${TARGET}/index.html @ONLY)
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/../helpers.js ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${TARGET}/helpers.js @ONLY)
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# bench.wasm
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Benchmark the performance of whisper.cpp in the browser using WebAssembly
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Link: https://whisper.ggerganov.com/bench/
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Terminal version: [examples/bench](/examples/bench)
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## Build instructions
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```bash
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# build using Emscripten (v3.1.2)
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git clone https://github.com/ggerganov/whisper.cpp
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cd whisper.cpp
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mkdir build-em && cd build-em
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emcmake cmake ..
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make -j
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# copy the produced page to your HTTP path
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cp bin/bench.wasm/* /path/to/html/
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cp bin/libbench.worker.js /path/to/html/
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```
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#include "whisper.h"
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#include <emscripten.h>
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#include <emscripten/bind.h>
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#include <cmath>
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#include <string>
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#include <thread>
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#include <vector>
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constexpr int N_THREAD = 8;
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// TODO: get rid of this vector of contexts - bad idea in the first place
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std::vector<struct whisper_context *> g_contexts(4, nullptr);
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std::thread g_worker;
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void bench_main(size_t index) {
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const int n_threads = std::min(N_THREAD, (int) std::thread::hardware_concurrency());
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// whisper context
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auto & ctx = g_contexts[index];
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fprintf(stderr, "%s: running benchmark with %d threads - please wait...\n", __func__, n_threads);
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if (int ret = whisper_set_mel(ctx, nullptr, 0, WHISPER_N_MEL)) {
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fprintf(stderr, "error: failed to set mel: %d\n", ret);
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return;
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}
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if (int ret = whisper_encode(ctx, 0, n_threads) != 0) {
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fprintf(stderr, "error: failed to encode model: %d\n", ret);
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return;
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}
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whisper_print_timings(ctx);
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fprintf(stderr, "\n");
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fprintf(stderr, "If you wish, you can submit these results here:\n");
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fprintf(stderr, "\n");
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fprintf(stderr, " https://github.com/ggerganov/whisper.cpp/issues/89\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "Please include the following information:\n");
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fprintf(stderr, "\n");
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fprintf(stderr, " - CPU model\n");
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fprintf(stderr, " - Operating system\n");
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fprintf(stderr, " - Browser\n");
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fprintf(stderr, "\n");
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}
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EMSCRIPTEN_BINDINGS(bench) {
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emscripten::function("init", emscripten::optional_override([](const std::string & path_model) {
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for (size_t i = 0; i < g_contexts.size(); ++i) {
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if (g_contexts[i] == nullptr) {
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g_contexts[i] = whisper_init(path_model.c_str());
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if (g_contexts[i] != nullptr) {
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if (g_worker.joinable()) {
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g_worker.join();
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}
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g_worker = std::thread([i]() {
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bench_main(i);
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});
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return i + 1;
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} else {
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return (size_t) 0;
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}
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}
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}
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return (size_t) 0;
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}));
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emscripten::function("free", emscripten::optional_override([](size_t index) {
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if (index < g_contexts.size()) {
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whisper_free(g_contexts[index]);
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g_contexts[index] = nullptr;
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}
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}));
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}
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<!doctype html>
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<html lang="en-us">
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<head>
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<title>bench : Benchmark whisper.cpp performance in the browser</title>
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<style>
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#output {
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width: 100%;
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height: 100%;
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margin: 0 auto;
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margin-top: 10px;
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border-left: 0px;
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border-right: 0px;
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padding-left: 0px;
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padding-right: 0px;
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display: block;
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background-color: black;
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color: white;
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font-size: 10px;
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font-family: 'Lucida Console', Monaco, monospace;
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outline: none;
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white-space: pre;
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overflow-wrap: normal;
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overflow-x: scroll;
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}
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</style>
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</head>
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<body>
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<div id="main-container">
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<b>bench : Benchmark whisper.cpp performance in the browser</b>
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<br><br>
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You can find more about this project on <a href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/bench.wasm">GitHub</a>.
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<br><br>
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<hr>
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Select the model you would like to use and click the "Bench" button.<br>
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The results will be displayed in the textarea below.
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<br><br>
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<div id="model-whisper">
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Whisper model: <span id="model-whisper-status"></span>
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<button id="fetch-whisper-tiny-en" onclick="loadWhisper('tiny.en')">tiny.en (75 MB)</button>
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<button id="fetch-whisper-base-en" onclick="loadWhisper('base.en')">base.en (142 MB)</button>
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<span id="fetch-whisper-progress"></span>
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<input type="file" id="whisper-file" name="file" onchange="loadFile(event, 'whisper.bin')" />
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</div>
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<br>
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<div id="input">
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<button id="bench" onclick="onBench()" disabled>Bench</button>
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<button id="clear" onclick="clearCache()">Clear Cache</button>
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</div>
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<hr>
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Debug output:
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<textarea id="output" rows="20"></textarea>
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<br>
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<b>Troubleshooting</b>
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<br><br>
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The page does some heavy computations, so make sure:
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<ul>
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<li>To use a modern web browser (e.g. Chrome, Firefox)</li>
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<li>To use a fast desktop or laptop computer (i.e. not a mobile phone)</li>
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<li>Your browser supports WASM <a href="https://webassembly.org/roadmap/">Fixed-width SIMD</a></li>
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</ul>
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<div class="cell-version">
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<span>
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Build time: <span class="nav-link">@GIT_DATE@</span> |
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Commit hash: <a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/commit/@GIT_SHA1@">@GIT_SHA1@</a> |
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Commit subject: <span class="nav-link">@GIT_COMMIT_SUBJECT@</span> |
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<a class="nav-link" href="https://github.com/ggerganov/whisper.cpp/tree/master/examples/bench.wasm">Source Code</a> |
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</span>
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</div>
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</div>
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<script type="text/javascript" src="helpers.js"></script>
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<script type='text/javascript'>
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// the bench instance
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var instance = null;
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// model name
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var model_whisper = null;
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var Module = {
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print: printTextarea,
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printErr: printTextarea,
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setStatus: function(text) {
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printTextarea('js: ' + text);
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},
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monitorRunDependencies: function(left) {
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},
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preRun: function() {
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printTextarea('js: Preparing ...');
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},
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postRun: function() {
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printTextarea('js: Initialized successfully!');
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}
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};
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//
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// fetch models
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//
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let dbVersion = 1
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let dbName = 'whisper.ggerganov.com';
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let indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
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function storeFS(fname, buf) {
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// write to WASM file using FS_createDataFile
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// if the file exists, delete it
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try {
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Module.FS_unlink(fname);
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} catch (e) {
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// ignore
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}
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Module.FS_createDataFile("/", fname, buf, true, true);
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printTextarea('storeFS: stored model: ' + fname + ' size: ' + buf.length);
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model_whisper = fname;
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document.getElementById('model-whisper-status').innerHTML = 'loaded "' + model_whisper + '"!';
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if (model_whisper != null) {
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document.getElementById('bench').disabled = false;
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}
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}
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function loadFile(event, fname) {
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var file = event.target.files[0] || null;
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if (file == null) {
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return;
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}
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printTextarea("loadFile: loading model: " + file.name + ", size: " + file.size + " bytes");
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printTextarea('loadFile: please wait ...');
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var reader = new FileReader();
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reader.onload = function(event) {
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var buf = new Uint8Array(reader.result);
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storeFS(fname, buf);
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}
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reader.readAsArrayBuffer(file);
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document.getElementById('fetch-whisper-tiny-en').style.display = 'none';
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document.getElementById('fetch-whisper-base-en').style.display = 'none';
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document.getElementById('whisper-file' ).style.display = 'none';
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document.getElementById('model-whisper-status' ).innerHTML = 'loaded model: ' + file.name;
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}
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function loadWhisper(model) {
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let urls = {
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'tiny.en': 'https://whisper.ggerganov.com/ggml-model-whisper-tiny.en.bin',
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'base.en': 'https://whisper.ggerganov.com/ggml-model-whisper-base.en.bin',
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};
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let sizes = {
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'tiny.en': 75,
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'base.en': 142,
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};
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let url = urls[model];
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let dst = 'whisper.bin';
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let size_mb = sizes[model];
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document.getElementById('fetch-whisper-tiny-en').style.display = 'none';
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document.getElementById('fetch-whisper-base-en').style.display = 'none';
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document.getElementById('model-whisper-status').innerHTML = 'loading "' + model + '" ... ';
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cbProgress = function(p) {
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let el = document.getElementById('fetch-whisper-progress');
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el.innerHTML = Math.round(100*p) + '%';
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};
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cbCancel = function() {
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var el;
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el = document.getElementById('fetch-whisper-tiny-en'); if (el) el.style.display = 'inline-block';
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el = document.getElementById('fetch-whisper-base-en'); if (el) el.style.display = 'inline-block';
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el = document.getElementById('model-whisper-status'); if (el) el.innerHTML = '';
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};
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loadRemote(url, dst, size_mb, cbProgress, storeFS, cbCancel, printTextarea);
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}
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//
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// main
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//
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function onBench() {
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if (instance) {
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Module.free(instance);
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}
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instance = Module.init('whisper.bin');
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if (instance) {
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printTextarea("js: whisper initialized, instance: " + instance);
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}
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document.getElementById('bench').disabled = true;
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if (!instance) {
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printTextarea("js: failed to initialize whisper");
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return;
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}
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}
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</script>
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<script type="text/javascript" src="bench.js"></script>
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</body>
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</html>
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