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ClearML helps you get the most out of ultralytics' YOLOv5 through its native built in logger:

  • Track every YOLOv5 training run in ClearML
  • Version and easily access your custom training data with ClearML Data
  • Remotely train and monitor your YOLOv5 training runs using ClearML Agent
  • Get the very best mAP using ClearML Hyperparameter Optimization
  • Turn your newly trained YOLOv5 model into an API with just a few commands using ClearML Serving


  1. Install the clearml python package:

    pip install clearml
  2. To keep track of your experiments and/or data, ClearML needs to communicate to a server. You have 2 server options:

  3. Connect the ClearML SDK to the server by creating credentials (go to the top right in the UI to Settings > Workspace > Create new credentials), then execute the command below and follow the instructions:


That's it! Now, whenever you train a model using YOLOv5, the run will be captured and tracked by ClearML – no additional code necessary.

Training YOLOv5 with ClearML

To enable ClearML experiment tracking, simply install the clearml pip package in your execution environment.

pip install clearml>=1.2.0

This will enable integration with the YOLOv5 training script. In every training run from now on, the ClearML experiment manager will capture:

  • Source code and uncommitted changes
  • Installed packages
  • Hyperparameters
  • Model files (use --save-period n to save a checkpoint every n epochs)
  • Console output
  • Scalars (e.g. mAP_0.5, mAP_0.5:0.95, precision, recall, losses)
  • General information such as machine details, runtime, creation date etc.
  • All produced plots such as label correlogram and confusion matrix
  • Images with bounding boxes per epoch
  • Mosaic per epoch
  • Validation images per epoch
  • And more

All of this is captured into a ClearML Task. By default, a task called Training is created in the YOLOv5 project. To change the task's name or project, use the --project and --name arguments when running the script.

python --project my_project --name my_training --img 640 --batch 16 --epochs 3 --data coco128.yaml --weights --cache
project names

ClearML uses / as a delimiter for subprojects: using example/sample as a name will create the sample task within the example project.

You can see all the captured data in the task's page of the ClearML WebApp. Additionally, you can view all of your YOLOv5 runs tracked by ClearML in the Experiments Table. Add custom columns to the table, such as mAP values, so you can easily sort and see what is the best performing model. You can also select multiple experiments and directly compare them.

Dataset Version Management

Versioning your data separately from your code makes it easier to access the dataset version you need for your experiments. ClearML Data makes data easily accessible from every machine, and links data and experiments for better traceability.

Prepare Your Dataset

The YOLOv5 repository supports a number of different datasets by using yaml files containing their information. By default, datasets are downloaded to the ../datasets folder relative to the repository root folder. For example, if you download the coco128 dataset using the link in the yaml file or the scripts provided by YOLOv5, you get this folder structure:

|_ yolov5
|_ datasets
|_ coco128
|_ images
|_ labels
|_ README.txt

You can use any dataset, as long as you maintain this folder structure. Copy the dataset's corresponding yaml file to the root of the dataset folder.

|_ yolov5
|_ datasets
|_ coco128
|_ images
|_ labels
|_ coco128.yaml # <---- HERE!
|_ README.txt

The yaml file needs to be stored along with your dataset so that ClearML can set up the dataset in a way that it's accessible to train on the data with YOLO.

Upload Your Dataset

To create a ClearML dataset with this data, go to the dataset root folder and run the sync command:

cd coco128
clearml-data sync --project YOLOv5 --name coco128 --folder .

This command syncs the folder's content with ClearML, packaging all of the folder's contents into a ClearML dataset.

Alternatively, you can run these commands one after the other to create a dataset:

# Optionally add --parent <parent_dataset_id> if you want to base
# this version on another dataset version, so no duplicate files are uploaded!
clearml-data create --name coco128 --project YOLOv5
clearml-data add --files .
clearml-data close

Both of these methods print to console a dataset ID, which you can later use to access your dataset:

clearml-data - Dataset Management & Versioning CLI
Creating a new dataset:
ClearML results page:<project-id>/experiments/<dataset-id>/output/log
ClearML dataset page: https://app.clear.mli/datasets/simple/<project-id>/experiments/<dataset-id>
New dataset created id=<dataset-id>

Run Training Using a ClearML Dataset

Now that you have a ClearML dataset, you can very simply use it to train custom YOLOv5 models:

python --img 640 --batch 16 --epochs 3 --data clearml://<your_dataset_id> --weights --cache

Remote Execution

ClearML logs all the information required to reproduce an experiment on a different machine (installed packages, uncommitted changes etc.). The ClearML Agent listens to designated queues and when a task is enqueued, the agent pulls it, recreates its execution environment, and runs it, reporting its scalars, plots, etc. to the experiment manager.

Deploy a ClearML Agent onto any machine (e.g. a cloud VM, a local GPU machine, your own laptop) by simply running the following command on it:

clearml-agent daemon --queue <queues_to_listen_to> [--docker]

Use the ClearML Autoscalers to help you manage cloud workloads in the cloud of your choice (AWS, GCP, Azure) and automatically deploy ClearML agents: the autoscaler automatically spins up and shuts down instances as needed, according to a resource budget that you set.

Cloning, Editing, and Enqueuing

Cloning, editing, enqueuing gif

Use ClearML's web interface to edit task details, like configuration parameters or input models, then execute the task with the new configuration on a remote machine:

  • Clone the experiment
  • Edit the hyperparameters and/or other details
  • Enqueue the task

The ClearML Agent executing the task will use the new values to override any hard coded values.

Executing a Task Remotely

You can set a task to be executed remotely programmatically by adding Task.execute_remotely() to your script. This method stops the current local execution of the task, and then enqueues it to a specified queue to re-run it on a remote machine.

To run the YOLOv5 training script remotely, all you have to do is add loggers.clearml.task.execute_remotely(queue="<queue_name>") to the script after the ClearML logger has been instantiated:

# ...
# Loggers
data_dict = None
if RANK in {-1, 0}:
loggers = Loggers(save_dir, weights, opt, hyp, LOGGER) # loggers instance
if loggers.clearml:
loggers.clearml.task.execute_remotely(queue="my_queue") # <------ ADD THIS LINE
# Data_dict is either None is user did not choose for ClearML dataset or is filled in by ClearML
data_dict = loggers.clearml.data_dict
# …

Hyperparameter Optimization

Use ClearML's HyperParameterOptimizer class to find the hyperparameter values that yield the best performing models.

To run hyperparameter optimization locally, you can use the template script provided with YOLOv5. Notice you need to fill in a baseline task ID, meaning a training task needs to have been run at least once. This experiment will be cloned multiple times, and each clone's parameter will be overridden with a new value.