Creating the Dashboard
I have an interest in data visualization, and follow many blogs that show off new methods. On one occasion, I saw Dashing mentioned.
I wrote several jobs to retrieve data from numerous sources. Most of the information is from HCC's local instance of OSG's Gratia accounting system. The HCC Dashboard uses our gratia system for:
- How many CPU hours where consumed on our resources.
- Current usage by User (http://hcc.unl.edu//gratia/)
Each box is an instances of a widget. A widget is a combination of HTML, SCSS, and CoffeeScript that are used to parse and present the data.
Current Dashboard Design
Most of the information on the dashboard is in the form of monitoring. The current number of cores used on our resources and the top users widgets use Gratia monitoring information. The networking graph uses Ganglia.
We also include a "Hourly Price on Amazon EC2" widget. This combines the computing, storage, and networking costs (extrapolated from current values), and displays an expected price per hour on Amazon. The computing is easily the most expensive component.
Who Uses it?
HCC uses it to display the current status of our computing center. It is useful to see if anything is working incorrectly. For example, we where able to spot problems on one of our clusters when the number of running cores decreased significantly, which was caused by the scheduler draining off a significant portion of the cluster in order for a single user to run a toy job.
The top users is also interesting for HCC researchers when the come into the offices. They are able to see their own usernames on the big display, prominently displayed.
|Growing collection of visualizations|