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hf-multimodal and vllm-vlm model types and mmmu task as a prototype feature. We welcome users to try out this in-progress feature and stress-test it for themselves, and suggest they check out lmms-eval, a wonderful project originally forking off of the lm-evaluation-harness, for a broader range of multimodal tasks, models, and features.local-completions model type to evaluate the model.A new v0.4.0 release of lm-evaluation-harness is available !
New updates and features include:
Please see our updated documentation pages in docs/ for more details.
Development will be continuing on the main branch, and we encourage you to give us feedback on what features are desired and how to improve the library further, or ask questions, either in issues or PRs on GitHub, or in the EleutherAI discord!
This project provides a unified framework to test generative language models on a large number of different evaluation tasks.
Features:
The Language Model Evaluation Harness is the backend for 🤗 Hugging Face's popular Open LLM Leaderboard, has been used in hundreds of papers, and is used internally by dozens of organizations including NVIDIA, Cohere, BigScience, BigCode, Nous Research, and Mosaic ML.
To install the lm-eval package from the github repository, run:
git clone --depth 1 https://github.com/EleutherAI/lm-evaluation-harness
cd lm-evaluation-harness
pip install -e .
We also provide a number of optional dependencies for extended functionality. A detailed table is available at the end of this document.
A user guide detailing the full list of supported arguments is provided here, and on the terminal by calling lm_eval -h. Alternatively, you can use lm-eval instead of lm_eval.
A list of supported tasks (or groupings of tasks) can be viewed with lm-eval --tasks list. Task descriptions and links to corresponding subfolders are provided here.
transformersTo evaluate a model hosted on the HuggingFace Hub (e.g. GPT-J-6B) on hellaswag you can use the following command (this assumes you are using a CUDA-compatible GPU):
lm_eval --model hf \
--model_args pretrained=EleutherAI/gpt-j-6B \
--tasks hellaswag \
--device cuda:0 \
--batch_size 8
Additional arguments can be provided to the model constructor using the --model_args flag. Most notably, this supports the common practice of using the revisions feature on the Hub to store partially trained checkpoints, or to specify the datatype for running a model:
lm_eval --model hf \
--model_args pretrained=EleutherAI/pythia-160m,revision=step100000,dtype="float" \
--tasks lambada_openai,hellaswag \
--device cuda:0 \
--batch_size 8
Models that are loaded via both transformers.AutoModelForCausalLM (autoregressive, decoder-only GPT style models) and transformers.AutoModelForSeq2SeqLM (such as encoder-decoder models like T5) in Huggingface are supported.
Batch size selection can be automated by setting the --batch_size flag to auto. This will perform automatic detection of the largest batch size that will fit on your device. On tasks where there is a large difference between the longest and shortest example, it can be helpful to periodically recompute the largest batch size, to gain a further speedup. To do this, append :N to above flag to automatically recompute the largest batch size N times. For example, to recompute the batch size 4 times, the command would be:
lm_eval --model hf \
--model_args pretrained=EleutherAI/pythia-160m,revision=step100000,dtype="float" \
--tasks lambada_openai,hellaswag \
--device cuda:0 \
--batch_size auto:4
[!Note] Just like you can provide a local path to
transformers.AutoModel, you can also provide a local path tolm_evalvia--model_args pretrained=/path/to/model
accelerateWe support three main ways of using Hugging Face's accelerate 🚀 library for multi-GPU evaluation.
To perform data-parallel evaluation (where each GPU loads a separate full copy of the model), we leverage the accelerate launcher as follows:
accelerate launch -m lm_eval --model hf \
--tasks lambada_openai,arc_easy \
--batch_size 16
(or via accelerate launch --no-python lm_eval).
For cases where your model can fit on a single GPU, this allows you to evaluate on K GPUs K times faster than on one.
WARNING: This setup does not work with FSDP model sharding, so in accelerate config FSDP must be disabled, or the NO_SHARD FSDP option must be used.
The second way of using accelerate for multi-GPU evaluation is when your model is too large to fit on a single GPU.
In this setting, run the library outside the accelerate launcher, but passing parallelize=True to --model_args as follows:
lm_eval --model hf \
--tasks lambada_openai,arc_easy \
--model_args parallelize=True \
--batch_size 16
This means that your model's weights will be split across all available GPUs.
For more advanced users or even larger models, we allow for the following arguments when parallelize=True as well:
device_map_option: How to split model weights across available GPUs. defaults to "auto".max_memory_per_gpu: the max GPU memory to use per GPU in loading the model.max_cpu_memory: the max amount of CPU memory to use when offloading the model weights to RAM.offload_folder: a folder where model weights will be offloaded to disk if needed.The third option is to use both at the same time. This will allow you to take advantage of both data parallelism and model sharding, and is especially useful for models that are too large to fit on a single GPU.
accelerate launch --multi_gpu --num_processes {nb_of_copies_of_your_model} \
-m lm_eval --model hf \
--tasks lambada_openai,arc_easy \
--model_args parallelize=True \
--batch_size 16
To learn more about model parallelism and how to use it with the accelerate library, see the accelerate documentation
Warning: We do not natively support multi-node evaluation using the hf model type! Please reference our GPT-NeoX library integration for an example of code in which a custom multi-machine evaluation script is written.
Note: we do not currently support multi-node evaluations natively, and advise using either an externally hosted server to run inference requests against, or creating a custom integration with your distributed framework as is done for the GPT-NeoX library.
nemo modelsNVIDIA NeMo Framework is a generative AI framework built for researchers and pytorch developers working on language models.
To evaluate a nemo model, start by installing NeMo following the documentation. We highly recommended to use the NVIDIA PyTorch or NeMo container, especially if having issues installing Apex or any other dependencies (see latest released containers). Please also install the lm evaluation harness library following the instructions in the Install section.
NeMo models can be obtained through NVIDIA NGC Catalog or in NVIDIA's Hugging Face page. In NVIDIA NeMo Framework there are conversion scripts to convert the hf checkpoints of popular models like llama, falcon, mixtral or mpt to nemo.
Run a nemo model on one GPU:
lm_eval --model nemo_lm \
--model_args path=<path_to_nemo_model> \
--tasks hellaswag \
--batch_size 32
It is recommended to unpack the nemo model to avoid the unpacking inside the docker container - it may overflow disk space. For that you can run:
mkdir MY_MODEL
tar -xvf MY_MODEL.nemo -c MY_MODEL
nemo modelsBy default, only one GPU is used. But we do support either data replication or tensor/pipeline parallelism during evaluation, on one node.
model_args of devices to the number of data replicas to run. For example, the command to run 8 data replicas over 8 GPUs is:torchrun --nproc-per-node=8 --no-python lm_eval \
--model nemo_lm \
--model_args path=<path_to_nemo_model>,devices=8 \
--tasks hellaswag \
--batch_size 32
model_args of tensor_model_parallel_size and/or pipeline_model_parallel_size. In addition, you also have to set up devices to be equal to the product of tensor_model_parallel_size and/or pipeline_model_parallel_size. For example, the command to use one node of 4 GPUs with tensor parallelism of 2 and pipeline parallelism of 2 is:torchrun --nproc-per-node=4 --no-python lm_eval \
--model nemo_lm \
--model_args path=<path_to_nemo_model>,devices=4,tensor_model_parallel_size=2,pipeline_model_parallel_size=2 \
--tasks hellaswag \
--batch_size 32
Note that it is recommended to substitute the python command by torchrun --nproc-per-node=<number of devices> --no-python to facilitate loading the model into the GPUs. This is especially important for large checkpoints loaded into multiple GPUs.
Not supported yet: multi-node evaluation and combinations of data replication with tensor or pipeline parallelism.
vLLMWe also support vLLM for faster inference on supported model types, especially faster when splitting a model across multiple GPUs. For single-GPU or multi-GPU — tensor parallel, data parallel, or a combination of both — inference, for example:
lm_eval --model vllm \
--model_args pretrained={model_name},tensor_parallel_size={GPUs_per_model},dtype=auto,gpu_memory_utilization=0.8,data_parallel_size={model_replicas} \
--tasks lambada_openai \
--batch_size auto
To use vllm, do pip install lm_eval[vllm]. For a full list of supported vLLM configurations, please reference our vLLM integration and the vLLM documentation.
vLLM occasionally differs in output from Huggingface. We treat Huggingface as the reference implementation, and provide a script for checking the validity of vllm results against HF.
[!Tip] For fastest performance, we recommend using
--batch_size autofor vLLM whenever possible, to leverage its continuous batching functionality!
[!Tip] Passing
max_model_len=4096or some other reasonable default to vLLM through model args may cause speedups or prevent out-of-memory errors when trying to use auto batch size, such as for Mistral-7B-v0.1 which defaults to a maximum length of 32k.
Our library also supports the evaluation of models served via several commercial APIs, and we hope to implement support for the most commonly used performant local/self-hosted inference servers.
To call a hosted model, use:
export OPENAI_API_KEY=YOUR_KEY_HERE
lm_eval --model openai-completions \
--model_args model=davinci \
--tasks lambada_openai,hellaswag
We also support using your own local inference server with servers that mirror the OpenAI Completions and ChatCompletions APIs.
lm_eval --model local-completions --tasks gsm8k --model_args model=facebook/opt-125m,base_url=http://{yourip}:8000/v1/completions,num_concurrent=1,max_retries=3,tokenized_requests=False,batch_size=16
Note that for externally hosted models, configs such as --device which relate to where to place a local model should not be used and do not function. Just like you can use --model_args to pass arbitrary arguments to the model constructor for local models, you can use it to pass arbitrary arguments to the model API for hosted models. See the documentation of the hosting service for information on what arguments they support.
| API or Inference Server | Implemented? | --model <xxx> name | Models supported: | Request Types: |
|---|---|---|---|---|
| OpenAI Completions | :heavy_check_mark: | openai-completions, local-completions | All OpenAI Completions API models | generate_until, loglikelihood, loglikelihood_rolling |
| OpenAI ChatCompletions | :heavy_check_mark: | openai-chat-completions, local-chat-completions | All ChatCompletions API models | generate_until (no logprobs) |
| Anthropic | :heavy_check_mark: | anthropic | Supported Anthropic Engines | generate_until (no logprobs) |
| Anthropic Chat | :heavy_check_mark: | anthropic-chat, anthropic-chat-completions | Supported Anthropic Engines | generate_until (no logprobs) |
| Textsynth | :heavy_check_mark: | textsynth | All supported engines | generate_until, loglikelihood, loglikelihood_rolling |
| Cohere | :hourglass: - blocked on Cohere API bug | N/A | All cohere.generate() engines | generate_until, loglikelihood, loglikelihood_rolling |
| Llama.cpp (via llama-cpp-python) | :heavy_check_mark: | gguf, ggml | All models supported by llama.cpp | generate_until, loglikelihood, (perplexity evaluation not yet implemented) |
| vLLM | :heavy_check_mark: | vllm | Most HF Causal Language Models | generate_until, loglikelihood, loglikelihood_rolling |
| Mamba | :heavy_check_mark: | mamba_ssm | Mamba architecture Language Models via the mamba_ssm package | generate_until, loglikelihood, loglikelihood_rolling |
| Huggingface Optimum (Causal LMs) | ✔️ | openvino | Any decoder-only AutoModelForCausalLM converted with Huggingface Optimum into OpenVINO™ Intermediate Representation (IR) format | generate_until, loglikelihood, loglikelihood_rolling |
| Neuron via AWS Inf2 (Causal LMs) | ✔️ | neuronx | Any decoder-only AutoModelForCausalLM supported to run on huggingface-ami image for inferentia2 | generate_until, loglikelihood, loglikelihood_rolling |
| Neural Magic DeepSparse | ✔️ | deepsparse | Any LM from SparseZoo or on HF Hub with the "deepsparse" tag | generate_until, loglikelihood |
| Neural Magic SparseML | ✔️ | sparseml | Any decoder-only AutoModelForCausalLM from SparseZoo or on HF Hub. Especially useful for models with quantization like zoo:llama2-7b-gsm8k_llama2_pretrain-pruned60_quantized | generate_until, loglikelihood, loglikelihood_rolling |
| Your local inference server! | :heavy_check_mark: | local-completions or local-chat-completions | Support for OpenAI API-compatible servers, with easy customization for other APIs. | generate_until, loglikelihood, loglikelihood_rolling |
Models which do not supply logits or logprobs can be used with tasks of type generate_until only, while local models, or APIs that supply logprobs/logits of their prompts, can be run on all task types: generate_until, loglikelihood, loglikelihood_rolling, and multiple_choice.
For more information on the different task output_types and model request types, see our documentation.
[!Note] For best performance with closed chat model APIs such as Anthropic Claude 3 and GPT-4, we recommend carefully looking at a few sample outputs using
--limit 10first to confirm answer extraction and scoring on generative tasks is performing as expected. providingsystem="<some system prompt here>"within--model_argsfor anthropic-chat-completions, to instruct the model what format to respond in, may be useful.
A number of other libraries contain scripts for calling the eval harness through their library. These include GPT-NeoX, Megatron-DeepSpeed, and mesh-transformer-jax.
To create your own custom integration you can follow instructions from this tutorial.
[!Note] For tasks unsuitable for direct evaluation — either due risks associated with executing untrusted code or complexities in the evaluation process — the
--predict_onlyflag is available to obtain decoded generations for post-hoc evaluation.
If you have a Metal compatible Mac, you can run the eval harness using the MPS back-end by replacing --device cuda:0 with --device mps (requires PyTorch version 2.1 or higher). Note that the PyTorch MPS backend is still in early stages of development, so correctness issues or unsupported operations may exist. If you observe oddities in model performance on the MPS back-end, we recommend first checking that a forward pass of your model on --device cpu and --device mps match.
[!Note] You can inspect what the LM inputs look like by running the following command:
python write_out.py \ --tasks <task1,task2,...> \ --num_fewshot 5 \ --num_examples 10 \ --output_base_path /path/to/output/folderThis will write out one text file for each task.
To verify the data integrity of the tasks you're performing in addition to running the tasks themselves, you can use the --check_integrity flag:
lm_eval --model openai \
--model_args engine=davinci \
--tasks lambada_openai,hellaswag \
--check_integrity
For models loaded with the HuggingFace transformers library, any arguments provided via --model_args get passed to the relevant constructor directly. This means that anything you can do with AutoModel can be done with our library. For example, you can pass a local path via pretrained= or use models finetuned with PEFT by taking the call you would run to evaluate the base model and add ,peft=PATH to the model_args argument:
lm_eval --model hf \
--model_args pretrained=EleutherAI/gpt-j-6b,parallelize=True,load_in_4bit=True,peft=nomic-ai/gpt4all-j-lora \
--tasks openbookqa,arc_easy,winogrande,hellaswag,arc_challenge,piqa,boolq \
--device cuda:0
Models provided as delta weights can be easily loaded using the Hugging Face transformers library. Within --model_args, set the delta argument to specify the delta weights, and use the pretrained argument to designate the relative base model to which they will be applied:
lm_eval --model hf \
--model_args pretrained=Ejafa/llama_7B,delta=lmsys/vicuna-7b-delta-v1.1 \
--tasks hellaswag
GPTQ quantized models can be loaded by specifying their file names in ,autogptq=NAME (or ,autogptq=True for default names) in the model_args argument:
lm_eval --model hf \
--model_args pretrained=model-name-or-path,autogptq=model.safetensors,gptq_use_triton=True \
--tasks hellaswag
We support wildcards in task names, for example you can run all of the machine-translated lambada tasks via --task lambada_openai_mt_*.
To save evaluation results provide an --output_path. We also support logging model responses with the --log_samples flag for post-hoc analysis.
Additionally, one can provide a directory with --use_cache to cache the results of prior runs. This allows you to avoid repeated execution of the same (model, task) pairs for re-scoring.
To push results and samples to the Hugging Face Hub, first ensure an access token with write access is set in the HF_TOKEN environment variable. Then, use the --hf_hub_log_args flag to specify the organization, repository name, repository visibility, and whether to push results and samples to the Hub - example dataset on the HF Hub. For instance:
lm_eval --model hf \
--model_args pretrained=model-name-or-path,autogptq=model.safetensors,gptq_use_triton=True \
--tasks hellaswag \
--log_samples \
--output_path results \
--hf_hub_log_args hub_results_org=EleutherAI,hub_repo_name=lm-eval-results,push_results_to_hub=True,push_samples_to_hub=True,public_repo=False \
This allows you to easily download the results and samples from the Hub, using:
from datasets import load_dataset
load_dataset("EleutherAI/lm-eval-results-private", "hellaswag", "latest")
For a full list of supported arguments, check out the interface guide in our documentation!
You can seamlessly visualize and analyze the results of your evaluation harness runs using both Weights & Biases (W&B) and Zeno.
You can use Zeno to visualize the results of your eval harness runs.
First, head to hub.zenoml.com to create an account and get an API key on your account page. Add this key as an environment variable:
export ZENO_API_KEY=[your api key]
You'll also need to install the lm_eval[zeno] package extra.
To visualize the results, run the eval harness with the log_samples and output_path flags.
We expect output_path to contain multiple folders that represent individual model names.
You can thus run your evaluation on any number of tasks and models and upload all of the results as projects on Zeno.
lm_eval \
--model hf \
--model_args pretrained=EleutherAI/gpt-j-6B \
--tasks hellaswag \
--device cuda:0 \
--batch_size 8 \
--log_samples \
--output_path output/gpt-j-6B
Then, you can upload the resulting data using the zeno_visualize script:
python scripts/zeno_visualize.py \
--data_path output \
--project_name "Eleuther Project"
This will use all subfolders in data_path as different models and upload all tasks within these model folders to Zeno.
If you run the eval harness on multiple tasks, the project_name will be used as a prefix and one project will be created per task.
You can find an example of this workflow in examples/visualize-zeno.ipynb.
With the Weights and Biases integration, you can now spend more time extracting deeper insights into your evaluation results. The integration is designed to streamline the process of logging and visualizing experiment results using the Weights & Biases (W&B) platform.
The integration provide functionalities
results.json file as an artifact for version control,<task_name>_eval_samples.json file if the samples are logged,First you'll need to install the lm_eval[wandb] package extra. Do pip install lm_eval[wandb].
Authenticate your machine with an your unique W&B token. Visit https://wandb.ai/authorize to get one. Do wandb login in your command line terminal.
Run eval harness as usual with a wandb_args flag. Use this flag to provide arguments for initializing a wandb run (wandb.init) as comma separated string arguments.
lm_eval \
--model hf \
--model_args pretrained=microsoft/phi-2,trust_remote_code=True \
--tasks hellaswag,mmlu_abstract_algebra \
--device cuda:0 \
--batch_size 8 \
--output_path output/phi-2 \
--limit 10 \
--wandb_args project=lm-eval-harness-integration \
--log_samples
In the stdout, you will find the link to the W&B run page as well as link to the generated report. You can find an example of this workflow in examples/visualize-wandb.ipynb, and an example of how to integrate it beyond the CLI.
For more information on the library and how everything fits together, check out all of our documentation pages! We plan to post a larger roadmap of desired + planned library improvements soon, with more information on how contributors can help.
To implement a new task in the eval harness, see this guide.
In general, we follow this priority list for addressing concerns about prompting and other eval details:
These are guidelines and not rules, and can be overruled in special circumstances.
We try to prioritize agreement with the procedures used by other groups to decrease the harm when people inevitably compare runs across different papers despite our discouragement of the practice. Historically, we also prioritized the implementation from Language Models are Few Shot Learners as our original goal was specifically to compare results with that paper.
The best way to get support is to open an issue on this repo or join the EleutherAI Discord server. The #lm-thunderdome channel is dedicated to developing this project and the #release-discussion channel is for receiving support for our releases. If you've used the library and have had a positive (or negative) experience, we'd love to hear from you!
Extras dependencies can be installed via pip install -e ".[NAME]"
| Name | Use |
|---|---|
| api | For using api models (Anthropic, OpenAI API) |
| deepsparse | For running NM's DeepSparse models |
| dev | For linting PRs and contributions |
| gptq | For loading models with GPTQ |
| hf_transfer | For speeding up HF Hub file downloads |
| ifeval | For running the IFEval task |
| neuronx | For running on AWS inf2 instances |
| mamba | For loading Mamba SSM models |
| math | For running math task answer checking |
| multilingual | For multilingual tokenizers |
| optimum | For running Intel OpenVINO models |
| promptsource | For using PromptSource prompts |
| sentencepiece | For using the sentencepiece tokenizer |
| sparseml | For using NM's SparseML models |
| testing | For running library test suite |
| vllm | For loading models with vLLM |
| zeno | For visualizing results with Zeno |
| --------------- | --------------------------------------- |
| all | Loads all extras (not recommended) |
@misc{eval-harness,
author = {Gao, Leo and Tow, Jonathan and Abbasi, Baber and Biderman, Stella and Black, Sid and DiPofi, Anthony and Foster, Charles and Golding, Laurence and Hsu, Jeffrey and Le Noac'h, Alain and Li, Haonan and McDonell, Kyle and Muennighoff, Niklas and Ociepa, Chris and Phang, Jason and Reynolds, Laria and Schoelkopf, Hailey and Skowron, Aviya and Sutawika, Lintang and Tang, Eric and Thite, Anish and Wang, Ben and Wang, Kevin and Zou, Andy},
title = {A framework for few-shot language model evaluation},
month = 07,
year = 2024,
publisher = {Zenodo},
version = {v0.4.3},
doi = {10.5281/zenodo.12608602},
url = {https://zenodo.org/records/12608602}
}
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A framework for evaluating language models
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