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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="../overview.html">Overview</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../quick-start-guide.html">Quick Start Guide</a></li>
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<li class="toctree-l1 has-children"><a class="reference internal" href="../installation/index.html">Installation</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="../installation/containers.html">Pre-built release container images on NGC</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/linux.html">Installing on Linux via <code class="docutils literal notranslate"><span class="pre">pip</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="../installation/build-from-source-linux.html">Building from Source Code on Linux</a></li>
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</ul>
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</details></li>
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</ul>
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">Deployment Guide</span></p>
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<ul class="nav bd-sidenav">
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<li class="toctree-l1 has-children"><a class="reference internal" href="../examples/llm_api_examples.html">LLM 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="../examples/llm_inference.html">Generate text</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_inference_async.html">Generate text asynchronously</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_inference_async_streaming.html">Generate text in streaming</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_inference_distributed.html">Distributed LLM Generation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_guided_decoding.html">Generate text with guided decoding</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_logits_processor.html">Control generated text using logits processor</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_multilora.html">Generate text with multiple LoRA adapters</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_sparse_attention.html">Sparse Attention</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_speculative_decoding.html">Speculative Decoding</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_kv_cache_connector.html">KV Cache Connector</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_kv_cache_offloading.html">KV Cache Offloading</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_runtime.html">Runtime Configuration Examples</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_sampling.html">Sampling Techniques Showcase</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_mgmn_llm_distributed.html">Run LLM-API with pytorch backend on Slurm</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_mgmn_trtllm_bench.html">Run trtllm-bench with pytorch backend on Slurm</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples/llm_mgmn_trtllm_serve.html">Run trtllm-serve with pytorch backend on Slurm</a></li>
|
||
</ul>
|
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</details></li>
|
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<li class="toctree-l1 has-children"><a class="reference internal" href="../examples/trtllm_serve_examples.html">Online Serving 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="../examples/curl_chat_client.html">Curl Chat Client</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/curl_chat_client_for_multimodal.html">Curl Chat Client For Multimodal</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/curl_completion_client.html">Curl Completion Client</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/deepseek_r1_reasoning_parser.html">Deepseek R1 Reasoning Parser</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/genai_perf_client.html">Genai Perf Client</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/genai_perf_client_for_multimodal.html">Genai Perf Client For Multimodal</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/openai_chat_client.html">OpenAI Chat Client</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/openai_chat_client_for_multimodal.html">OpenAI Chat Client for Multimodal</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/openai_completion_client.html">OpenAI Completion Client</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/openai_completion_client_for_lora.html">Openai Completion Client For Lora</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../examples/openai_completion_client_json_schema.html">OpenAI Completion Client with JSON Schema</a></li>
|
||
</ul>
|
||
</details></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../examples/dynamo_k8s_example.html">Dynamo K8s Example</a></li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../deployment-guide/index.html">Model Recipes</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deployment-guide/quick-start-recipe-for-deepseek-r1-on-trtllm.html">Quick Start Recipe for DeepSeek R1 on TensorRT LLM - Blackwell & Hopper Hardware</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deployment-guide/quick-start-recipe-for-llama3.3-70b-on-trtllm.html">Quick Start Recipe for Llama3.3 70B on TensorRT LLM - Blackwell & Hopper Hardware</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deployment-guide/quick-start-recipe-for-llama4-scout-on-trtllm.html">Quick Start Recipe for Llama4 Scout 17B on TensorRT LLM - Blackwell & Hopper Hardware</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deployment-guide/quick-start-recipe-for-gpt-oss-on-trtllm.html">Quick Start Recipe for GPT-OSS on TensorRT-LLM - Blackwell Hardware</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deployment-guide/quick-start-recipe-for-qwen3-next-on-trtllm.html">Quick Start Recipe for Qwen3 Next on TensorRT LLM - Blackwell & Hopper Hardware</a></li>
|
||
</ul>
|
||
</details></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Models</span></p>
|
||
<ul class="nav bd-sidenav">
|
||
<li class="toctree-l1"><a class="reference internal" href="../models/supported-models.html">Supported Models</a></li>
|
||
|
||
<li class="toctree-l1"><a class="reference internal" href="../models/adding-new-model.html">Adding a New Model</a></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">CLI Reference</span></p>
|
||
<ul class="nav bd-sidenav">
|
||
<li class="toctree-l1"><a class="reference internal" href="../commands/trtllm-bench.html">trtllm-bench</a></li>
|
||
|
||
<li class="toctree-l1"><a class="reference internal" href="../commands/trtllm-eval.html">trtllm-eval</a></li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../commands/trtllm-serve/index.html">trtllm-serve</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../commands/trtllm-serve/trtllm-serve.html">trtllm-serve</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../commands/trtllm-serve/run-benchmark-with-trtllm-serve.html">Run benchmarking with <code class="docutils literal notranslate"><span class="pre">trtllm-serve</span></code></a></li>
|
||
</ul>
|
||
</details></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">API Reference</span></p>
|
||
<ul class="nav bd-sidenav">
|
||
<li class="toctree-l1"><a class="reference internal" href="../llm-api/index.html">LLM API Introduction</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../llm-api/reference.html">API Reference</a></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Features</span></p>
|
||
<ul class="current nav bd-sidenav">
|
||
<li class="toctree-l1"><a class="reference internal" href="feature-combination-matrix.html">Feature Combination Matrix</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="attention.html">Multi-Head, Multi-Query, and Group-Query Attention</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="disagg-serving.html">Disaggregated Serving (Beta)</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="kvcache.html">KV Cache System</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="long-sequence.html">Long Sequences</a></li>
|
||
<li class="toctree-l1 current active"><a class="current reference internal" href="#">LoRA (Low-Rank Adaptation)</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="multi-modality.html">Multimodal Support in TensorRT LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="overlap-scheduler.html">Overlap Scheduler</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="paged-attention-ifb-scheduler.html">Paged Attention, IFB, and Request Scheduling</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="parallel-strategy.html">Parallelism in TensorRT LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="quantization.html">Quantization</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="sampling.html">Sampling</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="speculative-decoding.html">Speculative Decoding</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="checkpoint-loading.html">Checkpoint Loading</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="auto_deploy/auto-deploy.html">AutoDeploy (Prototype)</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="ray-orchestrator.html">Ray Orchestrator (Prototype)</a></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Developer Guide</span></p>
|
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<ul class="nav bd-sidenav">
|
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<li class="toctree-l1"><a class="reference internal" href="../developer-guide/overview.html">Architecture Overview</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../developer-guide/perf-analysis.html">Performance Analysis</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../developer-guide/perf-benchmarking.html">TensorRT LLM Benchmarking</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../developer-guide/ci-overview.html">Continuous Integration Overview</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../developer-guide/dev-containers.html">Using Dev Containers</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../developer-guide/api-change.html">LLM API Change Guide</a></li>
|
||
</ul>
|
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">Blogs</span></p>
|
||
<ul class="nav bd-sidenav">
|
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<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog10_ADP_Balance_Strategy.html">ADP Balance Strategy</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog11_GPT_OSS_Eagle3.html">Running GPT-OSS-120B with Eagle3 Speculative Decoding on GB200/B200 (TensorRT LLM)</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog12_Combining_Guided_Decoding_and_Speculative_Decoding.html">Combining Guided Decoding and Speculative Decoding: Making CPU and GPU Cooperate Seamlessly</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog13_Inference_Time_Compute_Implementation_in_TensorRT-LLM.html">Inference Time Compute Implementation in TensorRT LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog14_Scaling_Expert_Parallelism_in_TensorRT-LLM_part3.html">Scaling Expert Parallelism in TensorRT LLM (Part 3: Pushing the Performance Boundary)</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog1_Pushing_Latency_Boundaries_Optimizing_DeepSeek-R1_Performance_on_NVIDIA_B200_GPUs.html">Pushing Latency Boundaries: Optimizing DeepSeek-R1 Performance on NVIDIA B200 GPUs</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog2_DeepSeek_R1_MTP_Implementation_and_Optimization.html">DeepSeek R1 MTP Implementation and Optimization</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog3_Optimizing_DeepSeek_R1_Throughput_on_NVIDIA_Blackwell_GPUs.html">Optimizing DeepSeek R1 Throughput on NVIDIA Blackwell GPUs: A Deep Dive for Developers</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog4_Scaling_Expert_Parallelism_in_TensorRT-LLM.html">Scaling Expert Parallelism in TensorRT LLM (Part 1: Design and Implementation of Large-scale EP)</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog5_Disaggregated_Serving_in_TensorRT-LLM.html">Disaggregated Serving in TensorRT LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog6_Llama4_maverick_eagle_guide.html">How to launch Llama4 Maverick + Eagle3 TensorRT LLM server</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog7_NGram_performance_Analysis_And_Auto_Enablement.html">N-Gram Speculative Decoding in TensorRT LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog8_Scaling_Expert_Parallelism_in_TensorRT-LLM_part2.html">Scaling Expert Parallelism in TensorRT LLM (Part 2: Performance Status and Optimization)</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/tech_blog/blog9_Deploying_GPT_OSS_on_TRTLLM.html">Running a High Performance GPT-OSS-120B Inference Server with TensorRT LLM</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../blogs/Best_perf_practice_on_DeepSeek-R1_in_TensorRT-LLM.html">How to get best performance on DeepSeek-R1 in TensorRT LLM</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/XQA-kernel.html">New XQA-kernel provides 2.4x more Llama-70B throughput within the same latency budget</a></li>
|
||
<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>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Quick Links</span></p>
|
||
<ul class="nav bd-sidenav">
|
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<li class="toctree-l1"><a class="reference external" href="https://github.com/NVIDIA/TensorRT-LLM/releases">Releases</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/NVIDIA/TensorRT-LLM">Github Code</a></li>
|
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<li class="toctree-l1"><a class="reference external" href="https://github.com/NVIDIA/TensorRT-LLM/issues?q=is%3Aissue%20state%3Aopen%20label%3Aroadmap">Roadmap</a></li>
|
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</ul>
|
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">Use TensorRT Engine</span></p>
|
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<ul class="nav bd-sidenav">
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<li class="toctree-l1"><a class="reference internal" href="../legacy/tensorrt_quickstart.html">LLM API with TensorRT Engine</a></li>
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</nav></div>
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<div class="bd-content">
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<div class="header-article-items header-article__inner">
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<div class="header-article-items__start">
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<div class="header-article-item">
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<nav aria-label="Breadcrumb" class="d-print-none">
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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">LoRA (Low-Rank Adaptation)</span></li>
|
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</ul>
|
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</nav>
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</div>
|
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|
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</div>
|
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<div id="searchbox"></div>
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<article class="bd-article">
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<section class="tex2jax_ignore mathjax_ignore" id="lora-low-rank-adaptation">
|
||
<h1>LoRA (Low-Rank Adaptation)<a class="headerlink" href="#lora-low-rank-adaptation" title="Link to this heading">#</a></h1>
|
||
<p>LoRA (Low-Rank Adaptation) is a parameter-efficient fine-tuning technique that enables adapting large language models to specific tasks without modifying the original model weights. Instead of fine-tuning all parameters, LoRA introduces small trainable rank decomposition matrices that are added to existing weights during inference.</p>
|
||
<section id="table-of-contents">
|
||
<h2>Table of Contents<a class="headerlink" href="#table-of-contents" title="Link to this heading">#</a></h2>
|
||
<ol class="arabic simple">
|
||
<li><p><a class="reference internal" href="#background">Background</a></p></li>
|
||
<li><p><a class="reference internal" href="#basic-usage">Basic Usage</a></p>
|
||
<ul class="simple">
|
||
<li><p><a class="reference internal" href="#single-lora-adapter">Single LoRA Adapter</a></p></li>
|
||
<li><p><a class="reference internal" href="#multi-lora-support">Multi-LoRA Support</a></p></li>
|
||
</ul>
|
||
</li>
|
||
<li><p><a class="reference internal" href="#advanced-usage">Advanced Usage</a></p>
|
||
<ul class="simple">
|
||
<li><p><a class="reference internal" href="#lora-with-quantization">LoRA with Quantization</a></p></li>
|
||
<li><p><a class="reference internal" href="#nemo-lora-format">NeMo LoRA Format</a></p></li>
|
||
<li><p><a class="reference internal" href="#cache-management">Cache Management</a></p></li>
|
||
</ul>
|
||
</li>
|
||
<li><p><a class="reference internal" href="#trtllm-serve-with-lora">TRTLLM serve with LoRA</a></p>
|
||
<ul class="simple">
|
||
<li><p><a class="reference internal" href="#yaml-configuration">YAML Configuration</a></p></li>
|
||
<li><p><a class="reference internal" href="#starting-the-server">Starting the Server</a></p></li>
|
||
<li><p><a class="reference internal" href="#client-usage">Client Usage</a></p></li>
|
||
</ul>
|
||
</li>
|
||
<li><p><a class="reference internal" href="#trtllm-bench-with-lora">TRTLLM bench with LORA</a></p>
|
||
<ul class="simple">
|
||
<li><p><a class="reference internal" href="#yaml-configuration">YAML Configuration</a></p></li>
|
||
<li><p><a class="reference internal" href="#run-trtllm-bench">Run trtllm-bench</a></p></li>
|
||
</ul>
|
||
</li>
|
||
</ol>
|
||
</section>
|
||
<section id="background">
|
||
<h2>Background<a class="headerlink" href="#background" title="Link to this heading">#</a></h2>
|
||
<p>The PyTorch backend provides LoRA support, allowing you to:</p>
|
||
<ul class="simple">
|
||
<li><p>Load and apply multiple LoRA adapters simultaneously</p></li>
|
||
<li><p>Switch between different adapters for different requests</p></li>
|
||
<li><p>Use LoRA with quantized models</p></li>
|
||
<li><p>Support both HuggingFace and NeMo LoRA formats</p></li>
|
||
</ul>
|
||
</section>
|
||
<section id="basic-usage">
|
||
<h2>Basic Usage<a class="headerlink" href="#basic-usage" title="Link to this heading">#</a></h2>
|
||
<section id="single-lora-adapter">
|
||
<h3>Single LoRA Adapter<a class="headerlink" href="#single-lora-adapter" title="Link to this heading">#</a></h3>
|
||
<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</span><span class="w"> </span><span class="kn">import</span> <span class="n">LLM</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">tensorrt_llm.lora_manager</span><span class="w"> </span><span class="kn">import</span> <span class="n">LoraConfig</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">tensorrt_llm.executor.request</span><span class="w"> </span><span class="kn">import</span> <span class="n">LoRARequest</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">tensorrt_llm.sampling_params</span><span class="w"> </span><span class="kn">import</span> <span class="n">SamplingParams</span>
|
||
|
||
<span class="c1"># Configure LoRA</span>
|
||
<span class="n">lora_config</span> <span class="o">=</span> <span class="n">LoraConfig</span><span class="p">(</span>
|
||
<span class="n">lora_dir</span><span class="o">=</span><span class="p">[</span><span class="s2">"/path/to/lora/adapter"</span><span class="p">],</span>
|
||
<span class="n">max_lora_rank</span><span class="o">=</span><span class="mi">8</span><span class="p">,</span>
|
||
<span class="n">max_loras</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span>
|
||
<span class="n">max_cpu_loras</span><span class="o">=</span><span class="mi">1</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="c1"># Initialize LLM with LoRA support</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="s2">"/path/to/base/model"</span><span class="p">,</span>
|
||
<span class="n">lora_config</span><span class="o">=</span><span class="n">lora_config</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="c1"># Create LoRA request</span>
|
||
<span class="n">lora_request</span> <span class="o">=</span> <span class="n">LoRARequest</span><span class="p">(</span><span class="s2">"my-lora-task"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="s2">"/path/to/lora/adapter"</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Generate with LoRA</span>
|
||
<span class="n">prompts</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"Hello, how are you?"</span><span class="p">]</span>
|
||
<span class="n">sampling_params</span> <span class="o">=</span> <span class="n">SamplingParams</span><span class="p">(</span><span class="n">max_tokens</span><span class="o">=</span><span class="mi">50</span><span class="p">)</span>
|
||
|
||
<span class="n">outputs</span> <span class="o">=</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span>
|
||
<span class="n">prompts</span><span class="p">,</span>
|
||
<span class="n">sampling_params</span><span class="p">,</span>
|
||
<span class="n">lora_request</span><span class="o">=</span><span class="p">[</span><span class="n">lora_request</span><span class="p">]</span>
|
||
<span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="multi-lora-support">
|
||
<h3>Multi-LoRA Support<a class="headerlink" href="#multi-lora-support" title="Link to this heading">#</a></h3>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># Configure for multiple LoRA adapters</span>
|
||
<span class="n">lora_config</span> <span class="o">=</span> <span class="n">LoraConfig</span><span class="p">(</span>
|
||
<span class="n">lora_target_modules</span><span class="o">=</span><span class="p">[</span><span class="s1">'attn_q'</span><span class="p">,</span> <span class="s1">'attn_k'</span><span class="p">,</span> <span class="s1">'attn_v'</span><span class="p">],</span>
|
||
<span class="n">max_lora_rank</span><span class="o">=</span><span class="mi">8</span><span class="p">,</span>
|
||
<span class="n">max_loras</span><span class="o">=</span><span class="mi">4</span><span class="p">,</span>
|
||
<span class="n">max_cpu_loras</span><span class="o">=</span><span class="mi">8</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="n">model</span><span class="o">=</span><span class="s2">"/path/to/base/model"</span><span class="p">,</span> <span class="n">lora_config</span><span class="o">=</span><span class="n">lora_config</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Create multiple LoRA requests</span>
|
||
<span class="n">lora_req1</span> <span class="o">=</span> <span class="n">LoRARequest</span><span class="p">(</span><span class="s2">"task-1"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="s2">"/path/to/adapter1"</span><span class="p">)</span>
|
||
<span class="n">lora_req2</span> <span class="o">=</span> <span class="n">LoRARequest</span><span class="p">(</span><span class="s2">"task-2"</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="s2">"/path/to/adapter2"</span><span class="p">)</span>
|
||
|
||
<span class="n">prompts</span> <span class="o">=</span> <span class="p">[</span>
|
||
<span class="s2">"Translate to French: Hello world"</span><span class="p">,</span>
|
||
<span class="s2">"Summarize: This is a long document..."</span>
|
||
<span class="p">]</span>
|
||
|
||
<span class="c1"># Apply different LoRAs to different prompts</span>
|
||
<span class="n">outputs</span> <span class="o">=</span> <span class="n">llm</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span>
|
||
<span class="n">prompts</span><span class="p">,</span>
|
||
<span class="n">sampling_params</span><span class="p">,</span>
|
||
<span class="n">lora_request</span><span class="o">=</span><span class="p">[</span><span class="n">lora_req1</span><span class="p">,</span> <span class="n">lora_req2</span><span class="p">]</span>
|
||
<span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
</section>
|
||
<section id="advanced-usage">
|
||
<h2>Advanced Usage<a class="headerlink" href="#advanced-usage" title="Link to this heading">#</a></h2>
|
||
<section id="lora-with-quantization">
|
||
<h3>LoRA with Quantization<a class="headerlink" href="#lora-with-quantization" title="Link to this heading">#</a></h3>
|
||
<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.models.modeling_utils</span><span class="w"> </span><span class="kn">import</span> <span class="n">QuantConfig</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">tensorrt_llm.quantization.mode</span><span class="w"> </span><span class="kn">import</span> <span class="n">QuantAlgo</span>
|
||
|
||
<span class="c1"># Configure quantization</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">FP8</span><span class="p">,</span>
|
||
<span class="n">kv_cache_quant_algo</span><span class="o">=</span><span class="n">QuantAlgo</span><span class="o">.</span><span class="n">FP8</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="c1"># LoRA works with quantized models</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="s2">"/path/to/model"</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>
|
||
<span class="n">lora_config</span><span class="o">=</span><span class="n">lora_config</span>
|
||
<span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="nemo-lora-format">
|
||
<h3>NeMo LoRA Format<a class="headerlink" href="#nemo-lora-format" title="Link to this heading">#</a></h3>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># For NeMo-format LoRA checkpoints</span>
|
||
<span class="n">lora_config</span> <span class="o">=</span> <span class="n">LoraConfig</span><span class="p">(</span>
|
||
<span class="n">lora_dir</span><span class="o">=</span><span class="p">[</span><span class="s2">"/path/to/nemo/lora"</span><span class="p">],</span>
|
||
<span class="n">lora_ckpt_source</span><span class="o">=</span><span class="s2">"nemo"</span><span class="p">,</span>
|
||
<span class="n">max_lora_rank</span><span class="o">=</span><span class="mi">8</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="n">lora_request</span> <span class="o">=</span> <span class="n">LoRARequest</span><span class="p">(</span>
|
||
<span class="s2">"nemo-task"</span><span class="p">,</span>
|
||
<span class="mi">0</span><span class="p">,</span>
|
||
<span class="s2">"/path/to/nemo/lora"</span><span class="p">,</span>
|
||
<span class="n">lora_ckpt_source</span><span class="o">=</span><span class="s2">"nemo"</span>
|
||
<span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="cache-management">
|
||
<h3>Cache Management<a class="headerlink" href="#cache-management" title="Link to this heading">#</a></h3>
|
||
<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.llm_args</span><span class="w"> </span><span class="kn">import</span> <span class="n">PeftCacheConfig</span>
|
||
|
||
<span class="c1"># Fine-tune cache sizes</span>
|
||
<span class="n">peft_cache_config</span> <span class="o">=</span> <span class="n">PeftCacheConfig</span><span class="p">(</span>
|
||
<span class="n">host_cache_size</span><span class="o">=</span><span class="mi">1024</span><span class="o">*</span><span class="mi">1024</span><span class="o">*</span><span class="mi">1024</span><span class="p">,</span> <span class="c1"># 1GB CPU cache</span>
|
||
<span class="n">device_cache_percent</span><span class="o">=</span><span class="mf">0.1</span> <span class="c1"># 10% of free GPU memory</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="n">model</span><span class="o">=</span><span class="s2">"/path/to/model"</span><span class="p">,</span>
|
||
<span class="n">lora_config</span><span class="o">=</span><span class="n">lora_config</span><span class="p">,</span>
|
||
<span class="n">peft_cache_config</span><span class="o">=</span><span class="n">peft_cache_config</span>
|
||
<span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
</section>
|
||
<section id="trtllm-serve-with-lora">
|
||
<h2>TRTLLM serve with LoRA<a class="headerlink" href="#trtllm-serve-with-lora" title="Link to this heading">#</a></h2>
|
||
<section id="yaml-configuration">
|
||
<h3>YAML Configuration<a class="headerlink" href="#yaml-configuration" title="Link to this heading">#</a></h3>
|
||
<p>Create an <code class="docutils literal notranslate"><span class="pre">extra_llm_api_options.yaml</span></code> file:</p>
|
||
<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">lora_config</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="nt">lora_target_modules</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="s">'attn_q'</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="s">'attn_k'</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="s">'attn_v'</span><span class="p p-Indicator">]</span>
|
||
<span class="w"> </span><span class="nt">max_lora_rank</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">8</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="starting-the-server">
|
||
<h3>Starting the Server<a class="headerlink" href="#starting-the-server" title="Link to this heading">#</a></h3>
|
||
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>python<span class="w"> </span>-m<span class="w"> </span>tensorrt_llm.commands.serve
|
||
<span class="w"> </span>/path/to/model<span class="w"> </span><span class="se">\</span>
|
||
<span class="w"> </span>--extra_llm_api_options<span class="w"> </span>extra_llm_api_options.yaml
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="client-usage">
|
||
<h3>Client Usage<a class="headerlink" href="#client-usage" title="Link to this heading">#</a></h3>
|
||
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span><span class="w"> </span><span class="nn">openai</span>
|
||
|
||
<span class="n">client</span> <span class="o">=</span> <span class="n">openai</span><span class="o">.</span><span class="n">OpenAI</span><span class="p">(</span><span class="n">base_url</span><span class="o">=</span><span class="s2">"http://localhost:8000/v1"</span><span class="p">,</span> <span class="n">api_key</span><span class="o">=</span><span class="s2">"dummy"</span><span class="p">)</span>
|
||
|
||
<span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">completions</span><span class="o">.</span><span class="n">create</span><span class="p">(</span>
|
||
<span class="n">model</span><span class="o">=</span><span class="s2">"/path/to/model"</span><span class="p">,</span>
|
||
<span class="n">prompt</span><span class="o">=</span><span class="s2">"What is the capital city of France?"</span><span class="p">,</span>
|
||
<span class="n">max_tokens</span><span class="o">=</span><span class="mi">20</span><span class="p">,</span>
|
||
<span class="n">extra_body</span><span class="o">=</span><span class="p">{</span>
|
||
<span class="s2">"lora_request"</span><span class="p">:</span> <span class="p">{</span>
|
||
<span class="s2">"lora_name"</span><span class="p">:</span> <span class="s2">"lora-example-0"</span><span class="p">,</span>
|
||
<span class="s2">"lora_int_id"</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span>
|
||
<span class="s2">"lora_path"</span><span class="p">:</span> <span class="s2">"/path/to/lora_adapter"</span>
|
||
<span class="p">}</span>
|
||
<span class="p">},</span>
|
||
<span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
</section>
|
||
<section id="trtllm-bench-with-lora">
|
||
<h2>TRTLLM bench with LORA<a class="headerlink" href="#trtllm-bench-with-lora" title="Link to this heading">#</a></h2>
|
||
<section id="id1">
|
||
<h3>YAML Configuration<a class="headerlink" href="#id1" title="Link to this heading">#</a></h3>
|
||
<p>Create an <code class="docutils literal notranslate"><span class="pre">extra_llm_api_options.yaml</span></code> file:</p>
|
||
<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="nt">lora_config</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="nt">lora_dir</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/workspaces/tensorrt_llm/loras/0</span>
|
||
<span class="w"> </span><span class="nt">max_lora_rank</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">64</span>
|
||
<span class="w"> </span><span class="nt">max_loras</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">8</span>
|
||
<span class="w"> </span><span class="nt">max_cpu_loras</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">8</span>
|
||
<span class="w"> </span><span class="nt">lora_target_modules</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">attn_q</span>
|
||
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">attn_k</span>
|
||
<span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">attn_v</span>
|
||
<span class="w"> </span><span class="nt">trtllm_modules_to_hf_modules</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="nt">attn_q</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">q_proj</span>
|
||
<span class="w"> </span><span class="nt">attn_k</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">k_proj</span>
|
||
<span class="w"> </span><span class="nt">attn_v</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">v_proj</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="run-trtllm-bench">
|
||
<h3>Run trtllm-bench<a class="headerlink" href="#run-trtllm-bench" title="Link to this heading">#</a></h3>
|
||
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>trtllm-bench<span class="w"> </span>--model<span class="w"> </span><span class="nv">$model_path</span><span class="w"> </span>throughput<span class="w"> </span>--dataset<span class="w"> </span><span class="nv">$dataset_path</span><span class="w"> </span>--extra_llm_api_options<span class="w"> </span>extra_llm_api_options.yaml<span class="w"> </span>--num_requests<span class="w"> </span><span class="m">64</span><span class="w"> </span>--concurrency<span class="w"> </span><span class="m">16</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
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</section>
|
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</section>
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<ul class="visible nav section-nav flex-column">
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<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#table-of-contents">Table of Contents</a></li>
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<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#background">Background</a></li>
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<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#basic-usage">Basic Usage</a><ul class="nav section-nav flex-column">
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<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#single-lora-adapter">Single LoRA Adapter</a></li>
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<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#multi-lora-support">Multi-LoRA Support</a></li>
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<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#nemo-lora-format">NeMo LoRA Format</a></li>
|
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<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#cache-management">Cache Management</a></li>
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|
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<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#yaml-configuration">YAML Configuration</a></li>
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<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#client-usage">Client Usage</a></li>
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