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74 lines
2.5 KiB
Plaintext
74 lines
2.5 KiB
Plaintext
---
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title: "WDL"
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description: "Using Tracer with WDL workflows"
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---
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Tracer integrates with WDL (Workflow Description Language) pipelines executed through engines like Cromwell or miniWDL.
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It automatically traces all WDL tasks as they run, giving per-task performance data and cross-node visibility without modifying workflow definitions.
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## Why use Tracer in combination with WDL
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While WDL focuses on portability and reproducibility, it lacks system-level telemetry.
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Tracer adds observability that helps teams debug and optimize large WDL workflows:
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- Step-level execution graphs for each WDL task
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- Real-time metrics for CPU, memory, I/O, and storage
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- Correlated logs and system traces even if task logs are minimal
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- Cost and resource attribution by sample, node, or step
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- Works locally, in HPC, or in cloud environments (AWS, GCP, Azure)
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## Getting Started
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### Prerequisites
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- WDL engine installed and working (e.g., Cromwell or miniWDL)
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- Tracer installed on [your operating system](/environments/overview)
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### Just run your pipeline, Tracer will automatically attach
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If Tracer is already installed on your operating system, you only need to enable the Tracer agent for pipelines that have not been run with Tracer before.<br/>
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In that case, run the following command:
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```bash
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sudo tracer init --token <your-token>
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```
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<Info> Go to our [onboarding](https://app.tracer.cloud/dashboard) to get your own personal token</Info>
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When running this command, you will be asked to name your pipeline for clear labeling in the dashboard.
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## Examples
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Launch the Tracer demo workflow:
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```bash
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sudo tracer demo
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```
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Or run your WDL pipeline as usual.
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Once the pipeline starts, open the Tracer dashboard, and you’ll see each WDL task as a timeline step updating in real time.
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<Card href="https://app.tracer.cloud/">
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<img
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className="block dark:hidden"
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src="/images/logo/tracer/Tracer Full Body - Black.png"
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alt="Tracer Logo"
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style={{ width: '10%', height: 'auto', marginBottom: '1rem' }}
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/>
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<img
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className="hidden dark:block"
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src="/images/logo/tracer/Tracer Full Body - Black.png"
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alt="Tracer Logo"
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style={{ width: '10%', height: 'auto', marginBottom: '1rem' }}
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/>
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<div style={{ fontSize: '1.3rem', fontWeight: '700', marginBottom: '1rem', color: 'inherit' }}>
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Watch your pipeline run in the Tracer dashboard
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</div>
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<div style={{ color: 'inherit' }}>
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View real-time metrics, resource usage, and performance insights for your pipeline runs.
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</div>
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</Card>
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