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<div class="bd-toc-item navbar-nav"><p aria-level="2" class="caption" role="heading"><span class="caption-text">Getting Started</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../key-features.html">Key Features</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../torch.html">PyTorch Backend</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_medusa_decoding.html">Generate Text Using Medusa Decoding</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_multilora.html">Generate text with multiple LoRA adapters</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_async.html">Generate Text Asynchronously</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_distributed.html">Distributed LLM Generation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_logits_processor.html">Control generated text using logits post processor</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_lookahead_decoding.html">Generate Text Using Lookahead Decoding</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_quantization.html">Generation with Quantization</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_async_streaming.html">Generate Text in Streaming</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_guided_decoding.html">Generate text with guided decoding</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference.html">Generate text</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_customize.html">Generate text with customization</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_auto_parallel.html">Automatic Parallelism with LLM</a></li>
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</ul>
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</details></li>
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<li class="toctree-l1 current active"><a class="current reference internal" href="#">Common Customizations</a></li>
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<li class="toctree-l1 has-children"><a class="reference internal" href="llm_api_examples.html">Examples</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
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<li class="toctree-l2"><a class="reference internal" href="llm_medusa_decoding.html">Generate Text Using Medusa Decoding</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_multilora.html">Generate text with multiple LoRA adapters</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_async.html">Generate Text Asynchronously</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_distributed.html">Distributed LLM Generation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_logits_processor.html">Control generated text using logits post processor</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_lookahead_decoding.html">Generate Text Using Lookahead Decoding</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_quantization.html">Generation with Quantization</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_async_streaming.html">Generate Text in Streaming</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_guided_decoding.html">Generate text with guided decoding</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference.html">Generate text</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_inference_customize.html">Generate text with customization</a></li>
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<li class="toctree-l2"><a class="reference internal" href="llm_auto_parallel.html">Automatic Parallelism with LLM</a></li>
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</ul>
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</details></li>
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">Model Definition API</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../python-api/tensorrt_llm.layers.html">Layers</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../python-api/tensorrt_llm.models.html">Models</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../python-api/tensorrt_llm.plugin.html">Plugin</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../python-api/tensorrt_llm.quantization.html">Quantization</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../python-api/tensorrt_llm.runtime.html">Runtime</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../commands/trtllm-build.html">trtllm-build</a></li>
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">Architecture</span></p>
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<li class="toctree-l1"><a class="reference internal" href="../architecture/overview.html">TensorRT-LLM Architecture</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../architecture/add-model.html">Adding a Model</a></li>
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">Advanced</span></p>
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<ul class="nav bd-sidenav">
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<li class="toctree-l1"><a class="reference internal" href="../advanced/gpt-attention.html">Multi-Head, Multi-Query, and Group-Query Attention</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../advanced/gpt-runtime.html">C++ GPT Runtime</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../advanced/graph-rewriting.html">Graph Rewriting Module</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../advanced/inference-request.html">Inference Request</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../advanced/lora.html">Run gpt-2b + LoRA using GptManager / cpp runtime</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../advanced/expert-parallelism.html">Expert Parallelism in TensorRT-LLM</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../advanced/disaggregated-service.html">Disaggregated-Service (experimental)</a></li>
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<li class="toctree-l1 has-children"><a class="reference internal" href="../performance/performance-tuning-guide/index.html">Performance Tuning Guide</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
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<li class="toctree-l2"><a class="reference internal" href="../performance/performance-tuning-guide/benchmarking-default-performance.html">Benchmarking Default Performance</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../performance/performance-tuning-guide/useful-build-time-flags.html">Useful Build-Time Flags</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../performance/performance-tuning-guide/tuning-max-batch-size-and-max-num-tokens.html">Tuning Max Batch Size and Max Num Tokens</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../performance/performance-tuning-guide/deciding-model-sharding-strategy.html">Deciding Model Sharding Strategy</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../performance/performance-tuning-guide/fp8-quantization.html">FP8 Quantization</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../performance/performance-tuning-guide/useful-runtime-flags.html">Useful Runtime Options</a></li>
|
||
</ul>
|
||
</details></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../performance/perf-analysis.html">Performance Analysis</a></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Reference</span></p>
|
||
<ul class="nav bd-sidenav">
|
||
<li class="toctree-l1"><a class="reference internal" href="../reference/troubleshooting.html">Troubleshooting</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../reference/support-matrix.html">Support Matrix</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../reference/precision.html">Numerical Precision</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../reference/memory.html">Memory Usage of TensorRT-LLM</a></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Blogs</span></p>
|
||
<ul class="nav bd-sidenav">
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/H100vsA100.html">H100 has 4.6x A100 Performance in TensorRT-LLM, achieving 10,000 tok/s at 100ms to first token</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/H200launch.html">H200 achieves nearly 12,000 tokens/sec on Llama2-13B with TensorRT-LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/Falcon180B-H200.html">Falcon-180B on a single H200 GPU with INT4 AWQ, and 6.7x faster Llama-70B over A100</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/quantization-in-TRT-LLM.html">Speed up inference with SOTA quantization techniques in TRT-LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/XQA-kernel.html">New XQA-kernel provides 2.4x more Llama-70B throughput within the same latency budget</a></li>
|
||
</ul>
|
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</div>
|
||
</nav></div>
|
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</a>
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</li>
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<li class="breadcrumb-item active" aria-current="page"><span class="ellipsis">Common Customizations</span></li>
|
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</ul>
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</nav>
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<div id="searchbox"></div>
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<article class="bd-article">
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<section id="common-customizations">
|
||
<h1>Common Customizations<a class="headerlink" href="#common-customizations" title="Link to this heading">#</a></h1>
|
||
<section id="quantization">
|
||
<h2>Quantization<a class="headerlink" href="#quantization" title="Link to this heading">#</a></h2>
|
||
<p>TensorRT-LLM can quantize the Hugging Face model automatically. By setting the appropriate flags in the <code class="docutils literal notranslate"><span class="pre">LLM</span></code> instance. For example, to perform an Int4 AWQ quantization, the following code triggers the model quantization. Please refer to complete list of <a class="reference external" href="https://nvidia.github.io/TensorRT-LLM/_modules/tensorrt_llm/quantization/mode.html#QuantAlgo">supported flags</a> and acceptable values.</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span><span class="w"> </span><span class="nn">tensorrt_llm.llmapi</span><span class="w"> </span><span class="kn">import</span> <span class="n">QuantConfig</span><span class="p">,</span> <span class="n">QuantAlgo</span>
|
||
|
||
<span class="n">quant_config</span> <span class="o">=</span> <span class="n">QuantConfig</span><span class="p">(</span><span class="n">quant_algo</span><span class="o">=</span><span class="n">QuantAlgo</span><span class="o">.</span><span class="n">W4A16_AWQ</span><span class="p">)</span>
|
||
|
||
<span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="o"><</span><span class="n">model</span><span class="o">-</span><span class="nb">dir</span><span class="o">></span><span class="p">,</span> <span class="n">quant_config</span><span class="o">=</span><span class="n">quant_config</span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="sampling">
|
||
<h2>Sampling<a class="headerlink" href="#sampling" title="Link to this heading">#</a></h2>
|
||
<p>SamplingParams can customize the sampling strategy to control LLM generated responses, such as beam search, temperature, and <a class="reference external" href="https://github.com/NVIDIA/TensorRT-LLM/blob/main/tensorrt_llm/llmapi/utils.py#L55-L76">others</a>.</p>
|
||
<p>As an example, to enable beam search with a beam size of 4, set the <code class="docutils literal notranslate"><span class="pre">sampling_params</span></code> as follows:</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span><span class="w"> </span><span class="nn">tensorrt_llm.llmapi</span><span class="w"> </span><span class="kn">import</span> <span class="n">LLM</span><span class="p">,</span> <span class="n">SamplingParams</span><span class="p">,</span> <span class="n">BuildConfig</span>
|
||
|
||
<span class="n">build_config</span> <span class="o">=</span> <span class="n">BuildConfig</span><span class="p">()</span>
|
||
<span class="n">build_config</span><span class="o">.</span><span class="n">max_beam_width</span> <span class="o">=</span> <span class="mi">4</span>
|
||
|
||
<span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="o"><</span><span class="n">llama_model_path</span><span class="o">></span><span class="p">,</span> <span class="n">build_config</span><span class="o">=</span><span class="n">build_config</span><span class="p">)</span>
|
||
<span class="c1"># Let the LLM object generate text with the default sampling strategy, or</span>
|
||
<span class="c1"># you can create a SamplingParams object as well with several fields set manually</span>
|
||
<span class="n">sampling_params</span> <span class="o">=</span> <span class="n">SamplingParams</span><span class="p">(</span><span class="n">beam_width</span><span class="o">=</span><span class="mi">4</span><span class="p">)</span> <span class="c1"># current limitation: beam_width should be equal to max_beam_width</span>
|
||
|
||
<span class="k">for</span> <span class="n">output</span> <span class="ow">in</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span><span class="o"><</span><span class="n">prompt</span><span class="o">></span><span class="p">,</span> <span class="n">sampling_params</span><span class="o">=</span><span class="n">sampling_params</span><span class="p">):</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="n">output</span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><code class="docutils literal notranslate"><span class="pre">SamplingParams</span></code> manages and dispatches fields to C++ classes including:</p>
|
||
<ul class="simple">
|
||
<li><p><a class="reference external" href="https://nvidia.github.io/TensorRT-LLM/_cpp_gen/runtime.html#_CPPv4N12tensorrt_llm7runtime14SamplingConfigE">SamplingConfig</a></p></li>
|
||
<li><p><a class="reference external" href="https://nvidia.github.io/TensorRT-LLM/_cpp_gen/executor.html#_CPPv4N12tensorrt_llm8executor12OutputConfigE">OutputConfig</a></p></li>
|
||
</ul>
|
||
<p>Refer to the <a class="reference external" href="https://nvidia.github.io/TensorRT-LLM/llm-api/index.html#tensorrt_llm.llmapi.SamplingParams">class documentation</a> for more details.</p>
|
||
</section>
|
||
<section id="build-configuration">
|
||
<h2>Build Configuration<a class="headerlink" href="#build-configuration" title="Link to this heading">#</a></h2>
|
||
<p>Apart from the arguments mentioned above, you can also customize the build configuration with the <code class="docutils literal notranslate"><span class="pre">build_config</span></code> class and other arguments borrowed from the trtllm-build CLI. These build configuration options provide flexibility in building engines for the target hardware and use cases. Refer to the following example:</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="o"><</span><span class="n">model</span><span class="o">-</span><span class="n">path</span><span class="o">></span><span class="p">,</span>
|
||
<span class="n">build_config</span><span class="o">=</span><span class="n">BuildConfig</span><span class="p">(</span>
|
||
<span class="n">max_num_tokens</span><span class="o">=</span><span class="mi">4096</span><span class="p">,</span>
|
||
<span class="n">max_batch_size</span><span class="o">=</span><span class="mi">128</span><span class="p">,</span>
|
||
<span class="n">max_beam_width</span><span class="o">=</span><span class="mi">4</span><span class="p">))</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Refer to the <a class="reference external" href="https://github.com/NVIDIA/TensorRT-LLM/blob/main/tensorrt_llm/builder.py#L470-L501">buildconfig documentation</a> for more details.</p>
|
||
</section>
|
||
<section id="runtime-customization">
|
||
<h2>Runtime Customization<a class="headerlink" href="#runtime-customization" title="Link to this heading">#</a></h2>
|
||
<p>Similar to <code class="docutils literal notranslate"><span class="pre">build_config</span></code>, you can also customize the runtime configuration with the <code class="docutils literal notranslate"><span class="pre">runtime_config</span></code>, <code class="docutils literal notranslate"><span class="pre">peft_cache_config</span></code> or other <a class="reference external" href="https://github.com/NVIDIA/TensorRT-LLM/blob/main/tensorrt_llm/llmapi/llm_utils.py#L186-L223">arguments</a> borrowed from the Executor APIs. These runtime configuration options provide additional flexibility with respect to KV cache management, GPU memory allocation and so on. Refer to the following example:</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span><span class="w"> </span><span class="nn">tensorrt_llm.llmapi</span><span class="w"> </span><span class="kn">import</span> <span class="n">LLM</span><span class="p">,</span> <span class="n">KvCacheConfig</span>
|
||
|
||
<span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="o"><</span><span class="n">llama_model_path</span><span class="o">></span><span class="p">,</span>
|
||
<span class="n">kv_cache_config</span><span class="o">=</span><span class="n">KvCacheConfig</span><span class="p">(</span>
|
||
<span class="n">free_gpu_memory_fraction</span><span class="o">=</span><span class="mf">0.8</span><span class="p">))</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="tokenizer-customization">
|
||
<h2>Tokenizer Customization<a class="headerlink" href="#tokenizer-customization" title="Link to this heading">#</a></h2>
|
||
<p>By default, the LLM API uses transformers’ <code class="docutils literal notranslate"><span class="pre">AutoTokenizer</span></code>. You can override it with your own tokenizer by passing it when creating the LLM object. Refer to the following example:</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="o"><</span><span class="n">llama_model_path</span><span class="o">></span><span class="p">,</span> <span class="n">tokenizer</span><span class="o">=<</span><span class="n">my_faster_one</span><span class="o">></span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The LLM() workflow should use your tokenizer instead.</p>
|
||
<p>It is also possible to input token IDs directly without <code class="docutils literal notranslate"><span class="pre">Tokenizers</span></code> with the following code. The code produces token IDs without text because the tokenizer is not used.</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="o"><</span><span class="n">llama_model_path</span><span class="o">></span><span class="p">)</span>
|
||
|
||
<span class="k">for</span> <span class="n">output</span> <span class="ow">in</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate</span><span class="p">([</span><span class="mi">32</span><span class="p">,</span> <span class="mi">12</span><span class="p">]):</span>
|
||
<span class="o">...</span>
|
||
</pre></div>
|
||
</div>
|
||
<section id="disable-tokenizer">
|
||
<h3>Disable Tokenizer<a class="headerlink" href="#disable-tokenizer" title="Link to this heading">#</a></h3>
|
||
<p>For performance considerations, you can disable the tokenizer by passing <code class="docutils literal notranslate"><span class="pre">skip_tokenizer_init=True</span></code> when creating <code class="docutils literal notranslate"><span class="pre">LLM</span></code>. In this case, <code class="docutils literal notranslate"><span class="pre">LLM.generate</span></code> and <code class="docutils literal notranslate"><span class="pre">LLM.generate_async</span></code> will expect prompt token ids as input. Refer to the following example:</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="o"><</span><span class="n">llama_model_path</span><span class="o">></span><span class="p">)</span>
|
||
<span class="k">for</span> <span class="n">output</span> <span class="ow">in</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate</span><span class="p">([[</span><span class="mi">32</span><span class="p">,</span> <span class="mi">12</span><span class="p">]],</span> <span class="n">skip_tokenizer_init</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="n">output</span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>You will get something like:</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">RequestOutput</span><span class="p">(</span><span class="n">request_id</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">prompt</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">prompt_token_ids</span><span class="o">=</span><span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">15043</span><span class="p">,</span> <span class="mi">29892</span><span class="p">,</span> <span class="mi">590</span><span class="p">,</span> <span class="mi">1024</span><span class="p">,</span> <span class="mi">338</span><span class="p">],</span> <span class="n">outputs</span><span class="o">=</span><span class="p">[</span><span class="n">CompletionOutput</span><span class="p">(</span><span class="n">index</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">text</span><span class="o">=</span><span class="s1">''</span><span class="p">,</span> <span class="n">token_ids</span><span class="o">=</span><span class="p">[</span><span class="mi">518</span><span class="p">,</span> <span class="mi">10858</span><span class="p">,</span> <span class="mi">4408</span><span class="p">,</span> <span class="mi">29962</span><span class="p">,</span> <span class="mi">322</span><span class="p">,</span> <span class="mi">306</span><span class="p">,</span> <span class="mi">626</span><span class="p">,</span> <span class="mi">263</span><span class="p">,</span> <span class="mi">518</span><span class="p">,</span> <span class="mi">10858</span><span class="p">,</span> <span class="mi">20627</span><span class="p">,</span> <span class="mi">29962</span><span class="p">,</span> <span class="mi">472</span><span class="p">,</span> <span class="mi">518</span><span class="p">,</span> <span class="mi">10858</span><span class="p">,</span> <span class="mi">6938</span><span class="p">,</span> <span class="mi">1822</span><span class="p">,</span> <span class="mi">306</span><span class="p">,</span> <span class="mi">626</span><span class="p">,</span> <span class="mi">5007</span><span class="p">,</span> <span class="mi">304</span><span class="p">,</span> <span class="mi">4653</span><span class="p">,</span> <span class="mi">590</span><span class="p">,</span> <span class="mi">4066</span><span class="p">,</span> <span class="mi">297</span><span class="p">,</span> <span class="mi">278</span><span class="p">,</span> <span class="mi">518</span><span class="p">,</span> <span class="mi">11947</span><span class="p">,</span> <span class="mi">18527</span><span class="p">,</span> <span class="mi">29962</span><span class="p">,</span> <span class="mi">2602</span><span class="p">,</span> <span class="mi">472</span><span class="p">],</span> <span class="n">cumulative_logprob</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">logprobs</span><span class="o">=</span><span class="p">[])],</span> <span class="n">finished</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Note that the <code class="docutils literal notranslate"><span class="pre">text</span></code> field in <code class="docutils literal notranslate"><span class="pre">CompletionOutput</span></code> is empty since the tokenizer is deactivated.</p>
|
||
</section>
|
||
</section>
|
||
<section id="generation">
|
||
<h2>Generation<a class="headerlink" href="#generation" title="Link to this heading">#</a></h2>
|
||
<section id="asyncio-based-generation">
|
||
<h3>Asyncio-Based Generation<a class="headerlink" href="#asyncio-based-generation" title="Link to this heading">#</a></h3>
|
||
<p>With the LLM API, you can also perform asynchronous generation with the <code class="docutils literal notranslate"><span class="pre">generate_async</span></code> method. Refer to the following example:</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">llm</span> <span class="o">=</span> <span class="n">LLM</span><span class="p">(</span><span class="n">model</span><span class="o">=<</span><span class="n">llama_model_path</span><span class="o">></span><span class="p">)</span>
|
||
|
||
<span class="k">async</span> <span class="k">for</span> <span class="n">output</span> <span class="ow">in</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate_async</span><span class="p">(</span><span class="o"><</span><span class="n">prompt</span><span class="o">></span><span class="p">,</span> <span class="n">streaming</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="n">output</span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>When the <code class="docutils literal notranslate"><span class="pre">streaming</span></code> flag is set to <code class="docutils literal notranslate"><span class="pre">True</span></code>, the <code class="docutils literal notranslate"><span class="pre">generate_async</span></code> method will return a generator that yields each token as soon as it is available. Otherwise, it returns a generator that wait for and yields only the final results.</p>
|
||
</section>
|
||
<section id="future-style-generation">
|
||
<h3>Future-Style Generation<a class="headerlink" href="#future-style-generation" title="Link to this heading">#</a></h3>
|
||
<p>The result of the <code class="docutils literal notranslate"><span class="pre">generate_async</span></code> method is a <a class="reference external" href="https://docs.python.org/3/library/asyncio-future.html#asyncio.Future">Future-like</a> object, it doesn’t block the thread unless the <code class="docutils literal notranslate"><span class="pre">.result()</span></code> is called.</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># This will not block the main thread</span>
|
||
<span class="n">generation</span> <span class="o">=</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate_async</span><span class="p">(</span><span class="o"><</span><span class="n">prompt</span><span class="o">></span><span class="p">)</span>
|
||
<span class="c1"># Do something else here</span>
|
||
<span class="c1"># call .result() to explicitly block the main thread and wait for the result when needed</span>
|
||
<span class="n">output</span> <span class="o">=</span> <span class="n">generation</span><span class="o">.</span><span class="n">result</span><span class="p">()</span>
|
||
</pre></div>
|
||
</div>
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||
<p>The <code class="docutils literal notranslate"><span class="pre">.result()</span></code> method works like the <a class="reference external" href="https://docs.python.org/zh-cn/3/library/asyncio-future.html#asyncio.Future.result">result</a> method in the Python Future, you can specify a timeout to wait for the result.</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">output</span> <span class="o">=</span> <span class="n">generation</span><span class="o">.</span><span class="n">result</span><span class="p">(</span><span class="n">timeout</span><span class="o">=</span><span class="mi">10</span><span class="p">)</span>
|
||
</pre></div>
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</div>
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<p>There is an async version, where the <code class="docutils literal notranslate"><span class="pre">.aresult()</span></code> is used.</p>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">generation</span> <span class="o">=</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate_async</span><span class="p">(</span><span class="o"><</span><span class="n">prompt</span><span class="o">></span><span class="p">)</span>
|
||
<span class="n">output</span> <span class="o">=</span> <span class="k">await</span> <span class="n">generation</span><span class="o">.</span><span class="n">aresult</span><span class="p">()</span>
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