import{s as Xe,n as Re,o as Qe}from"../chunks/scheduler.3a17fb72.js";import{S as Pe,i as Fe,e as u,s as a,c as i,h as Ne,a as f,d as s,b as n,f as ze,g as p,j as U,k as Le,l as Ye,m as t,n as m,t as r,o,p as M}from"../chunks/index.093f8863.js";import{C as qe,H as c,E as Oe}from"../chunks/MermaidChart.svelte_svelte_type_style_lang.87e87726.js";import{C as Y}from"../chunks/CodeBlock.0812be60.js";function De(ve){let y,q,F,O,$,D,T,K,h,Ve=`Lighteval allows you to use VLLM as a backend, providing significant speedups for model evaluation.
To use VLLM, simply change the <code>model_args</code> to reflect the arguments you want to pass to VLLM.`,ee,g,xe='<p>Documentation for VLLM engine arguments can be found <a href="https://docs.vllm.ai/en/latest/serving/engine_args.html" rel="nofollow">here</a></p>',le,w,se,j,te,J,ae,b,Ge=`VLLM can distribute the model across multiple GPUs using data parallelism, pipeline parallelism, or tensor parallelism.
You can choose the parallelism method by setting the appropriate parameters in the <code>model_args</code>.`,ne,C,ie,_,We="For example, if you have 4 GPUs, you can split the model across them using tensor parallelism:",pe,I,me,L,re,v,Be="If your model fits on a single GPU, you can use data parallelism to speed up the evaluation:",oe,V,Me,x,ue,G,Ee=`For more advanced configurations, you can use a YAML configuration file for the model.
An example configuration file is shown below and can be found at <code>examples/model_configs/vllm_model_config.yaml</code>.`,fe,W,ce,B,Ue,d,Ae=`<p>In case of out-of-memory (OOM) issues, you might need to reduce the context size of the
model as well as reduce the <code>gpu_memory_utilization</code> parameter.</p>`,ye,E,ge,A,de,H,He="<li><code>gpu_memory_utilization</code>: Controls how much GPU memory VLLM can use (default: 0.9)</li> <li><code>max_model_length</code>: Maximum sequence length for the model</li> <li><code>swap_space</code>: Amount of CPU memory to use for swapping (in GB)</li>",$e,Z,Te,k,Ze="<li><code>tensor_parallel_size</code>: Number of GPUs for tensor parallelism</li> <li><code>data_parallel_size</code>: Number of GPUs for data parallelism</li> <li><code>pipeline_parallel_size</code>: Number of GPUs for pipeline parallelism</li>",he,S,we,z,ke="<li><code>temperature</code>: Controls randomness in generation (0.0 = deterministic, 1.0 = random)</li> <li><code>top_p</code>: Nucleus sampling parameter</li> <li><code>top_k</code>: Top-k sampling parameter</li> <li><code>max_new_tokens</code>: Maximum number of tokens to generate</li> <li><code>repetition_penalty</code>: Penalty for repeating tokens</li>",je,X,Je,R,be,Q,Se="<li><strong>Out of Memory Errors</strong>: Reduce <code>gpu_memory_utilization</code> or <code>max_model_length</code></li> <li><strong>Worker Process Issues</strong>: Ensure <code>VLLM_WORKER_MULTIPROC_METHOD=spawn</code> is set for multi-GPU setups</li> <li><strong>Model Loading Errors</strong>: Check that the model name and revision are correct</li>",Ce,P,_e,N,Ie;return $=new qe({props:{containerStyle:"float: right; margin-left: 10px; display: inline-flex; position: relative; z-index: 10;"}}),T=new c({props:{title:"Using VLLM as Backend",local:"using-vllm-as-backend",headingTag:"h1"}}),w=new c({props:{title:"Basic Usage",local:"basic-usage",headingTag:"h2"}}),j=new Y({props:{code:"bGlnaHRldmFsJTIwdmxsbSUyMCU1QyUwQSUyMCUyMCUyMCUyMCUyMm1vZGVsX25hbWUlM0RIdWdnaW5nRmFjZUg0JTJGemVwaHlyLTdiLWJldGElMjIlMjAlNUMlMEElMjAlMjAlMjAlMjBpZmV2YWw=",highlighted:`lighteval vllm \\
    <span class="hljs-string">&quot;model_name=HuggingFaceH4/zephyr-7b-beta&quot;</span> \\
    ifeval`,wrap:!1}}),J=new c({props:{title:"Parallelism Options",local:"parallelism-options",headingTag:"h2"}}),C=new c({props:{title:"Tensor Parallelism",local:"tensor-parallelism",headingTag:"h3"}}),I=new Y({props:{code:"ZXhwb3J0JTIwVkxMTV9XT1JLRVJfTVVMVElQUk9DX01FVEhPRCUzRHNwYXduJTIwJTI2JTI2JTIwbGlnaHRldmFsJTIwdmxsbSUyMCU1QyUwQSUyMCUyMCUyMCUyMCUyMm1vZGVsX25hbWUlM0RIdWdnaW5nRmFjZUg0JTJGemVwaHlyLTdiLWJldGElMkN0ZW5zb3JfcGFyYWxsZWxfc2l6ZSUzRDQlMjIlMjAlNUMlMEElMjAlMjAlMjAlMjBpZmV2YWw=",highlighted:`<span class="hljs-built_in">export</span> VLLM_WORKER_MULTIPROC_METHOD=spawn &amp;&amp; lighteval vllm \\
    <span class="hljs-string">&quot;model_name=HuggingFaceH4/zephyr-7b-beta,tensor_parallel_size=4&quot;</span> \\
    ifeval`,wrap:!1}}),L=new c({props:{title:"Data Parallelism",local:"data-parallelism",headingTag:"h3"}}),V=new Y({props:{code:"ZXhwb3J0JTIwVkxMTV9XT1JLRVJfTVVMVElQUk9DX01FVEhPRCUzRHNwYXduJTIwJTI2JTI2JTIwbGlnaHRldmFsJTIwdmxsbSUyMCU1QyUwQSUyMCUyMCUyMCUyMCUyMm1vZGVsX25hbWUlM0RIdWdnaW5nRmFjZUg0JTJGemVwaHlyLTdiLWJldGElMkNkYXRhX3BhcmFsbGVsX3NpemUlM0Q0JTIyJTIwJTVDJTBBJTIwJTIwJTIwJTIwaWZldmFs",highlighted:`<span class="hljs-built_in">export</span> VLLM_WORKER_MULTIPROC_METHOD=spawn &amp;&amp; lighteval vllm \\
    <span class="hljs-string">&quot;model_name=HuggingFaceH4/zephyr-7b-beta,data_parallel_size=4&quot;</span> \\
    ifeval`,wrap:!1}}),x=new c({props:{title:"Using a Configuration File",local:"using-a-configuration-file",headingTag:"h2"}}),W=new Y({props:{code:"bGlnaHRldmFsJTIwdmxsbSUyMCU1QyUwQSUyMCUyMCUyMCUyMCUyMmV4YW1wbGVzJTJGbW9kZWxfY29uZmlncyUyRnZsbG1fbW9kZWxfY29uZmlnLnlhbWwlMjIlMjAlNUMlMEElMjAlMjAlMjAlMjBpZmV2YWw=",highlighted:`lighteval vllm \\
    <span class="hljs-string">&quot;examples/model_configs/vllm_model_config.yaml&quot;</span> \\
    ifeval`,wrap:!1}}),B=new Y({props:{code:"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",highlighted:`<span class="hljs-attr">model_parameters:</span>
    <span class="hljs-attr">model_name:</span> <span class="hljs-string">&quot;HuggingFaceTB/SmolLM-1.7B-Instruct&quot;</span>
    <span class="hljs-attr">revision:</span> <span class="hljs-string">&quot;main&quot;</span>
    <span class="hljs-attr">dtype:</span> <span class="hljs-string">&quot;bfloat16&quot;</span>
    <span class="hljs-attr">tensor_parallel_size:</span> <span class="hljs-number">1</span>
    <span class="hljs-attr">data_parallel_size:</span> <span class="hljs-number">1</span>
    <span class="hljs-attr">pipeline_parallel_size:</span> <span class="hljs-number">1</span>
    <span class="hljs-attr">gpu_memory_utilization:</span> <span class="hljs-number">0.9</span>
    <span class="hljs-attr">max_model_length:</span> <span class="hljs-number">2048</span>
    <span class="hljs-attr">swap_space:</span> <span class="hljs-number">4</span>
    <span class="hljs-attr">seed:</span> <span class="hljs-number">1</span>
    <span class="hljs-attr">trust_remote_code:</span> <span class="hljs-literal">True</span>
    <span class="hljs-attr">add_special_tokens:</span> <span class="hljs-literal">True</span>
    <span class="hljs-attr">multichoice_continuations_start_space:</span> <span class="hljs-literal">True</span>
    <span class="hljs-attr">pairwise_tokenization:</span> <span class="hljs-literal">True</span>
    <span class="hljs-attr">subfolder:</span> <span class="hljs-literal">null</span>
    <span class="hljs-attr">generation_parameters:</span>
      <span class="hljs-attr">presence_penalty:</span> <span class="hljs-number">0.0</span>
      <span class="hljs-attr">repetition_penalty:</span> <span class="hljs-number">1.0</span>
      <span class="hljs-attr">frequency_penalty:</span> <span class="hljs-number">0.0</span>
      <span class="hljs-attr">temperature:</span> <span class="hljs-number">1.0</span>
      <span class="hljs-attr">top_k:</span> <span class="hljs-number">50</span>
      <span class="hljs-attr">min_p:</span> <span class="hljs-number">0.0</span>
      <span class="hljs-attr">top_p:</span> <span class="hljs-number">1.0</span>
      <span class="hljs-attr">seed:</span> <span class="hljs-number">42</span>
      <span class="hljs-attr">stop_tokens:</span> <span class="hljs-literal">null</span>
      <span class="hljs-attr">max_new_tokens:</span> <span class="hljs-number">1024</span>
      <span class="hljs-attr">min_new_tokens:</span> <span class="hljs-number">0</span>`,wrap:!1}}),E=new c({props:{title:"Key VLLM Parameters",local:"key-vllm-parameters",headingTag:"h2"}}),A=new c({props:{title:"Memory Management",local:"memory-management",headingTag:"h3"}}),Z=new c({props:{title:"Parallelism Settings",local:"parallelism-settings",headingTag:"h3"}}),S=new c({props:{title:"Generation Parameters",local:"generation-parameters",headingTag:"h3"}}),X=new c({props:{title:"Troubleshooting",local:"troubleshooting",headingTag:"h2"}}),R=new c({props:{title:"Common Issues",local:"common-issues",headingTag:"h3"}}),P=new 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