How to Set Up and Use the Convergence Plot in HPC

Introduction

This guide will walk you through the process of setting up and using the convergence plot feature on Qarnot’s HPC platform. The convergence plot is designed to help engineers monitor the convergence of ongoing simulations, ensuring that the computation is proceeding correctly.

Prerequisites

Access to the HPC platform interface.
A presence of residuals in the solver logs.

Step 1: Understand the Default Configuration

Default Settings

In the current beta version of the product, the convergence plot is configured by default. This means no user action is required to enable the tracking of residuals.

The default option uses a Qarnot script to parse and track residuals throughout the simulation.

Step 2: Locate the Convergence Plot

Accessing the Convergence Plot

Once the simulation has started, you will access the monitoring page.
Select the 2nd tab on the monitoring page to access the convergence plot.

Step 3: Using the Convergence Plot

Interactive Legend

On the left side of the convergence plot, you will find an interactive legend that allows you to:

Hide Displayed Curves: Click on the names of the curves in the legend to hide them.
Display Hidden Curves: Click on the names of the hidden curves in the legend to display them.

Graph Updates

The graph content updates regularly, showing the evolution of the residuals throughout the simulation. This allows engineers to assess the convergence of the case in real-time.

Future Enhancements

In future versions, users will be able to use their own scripts to monitor metrics other than residuals.

Conclusion

By following these steps, you can effectively use the convergence plot feature in your HPC platform to monitor the convergence of your simulations. This tool helps ensure that your computations are proceeding correctly and provides real-time feedback on the case’s progress.