Vampir

Vampir is a visualization tool for handling and analyzing instrumented and sampled event traces generated by Score-P. It provides powerful performance-analysis capabilities for highly parallel applications.

Vampir is available as a commercial product since 1996, requiring purchase for “standard” or “professional” licenses directly from vampir.eu. However, it is usable as a module on the cluster of the GWDG.

To use Vampir remotely, X11 forwarding must be enabled when connecting to a node:

ssh -X glogin-gpu.hpc.gwdg.de

Vampir can be loaded with the same module commands used for Score-P. For example:

module load vampir/10.7.0

Below is an example Vampir view, showing time-line based visualization of I/O operations alongside function summaries and activity distributions.

Vampir example output Vampir example output