uSane Teaser Video
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his video introduces the uSane toolkit, which tests the performance of your interconnect and lets you know if the cluster is ready to run applications. The toolkit also checks to see whether the cluster has been set up correctly, and if the file share is accessible to the compute nodes. In addition, uSane tests individual links and identifies any that are slow, so that you can be sure that all links are running as fast as they should be.
The uSane package contains a README file, a bin directory, and some sample usages of the set-base command. The video gives a brief description of the included tests:
- Cmd: A test that runs a simple command on a single CPU on a compute node (command line)
- MpiHi: A more robust parallel "Hello World" program (C Code)
- cNodeLate: A test that checks the MPI latency on all pairs of nodes ( C code)
- cNodeBand: A test that checks the MPI bandwidth on all pairs of nodes (C code)
- cCheck (if needed): An MPI ping-pong bandwidth latency test that verifies whether data sent returns without transmission errors. This test is handy for link verification or for generating both network and CPU load.
- cFlood (if needed): A multiple ping-pong bandwidth test that floods a switch with traffic to see if it can handle a full load.
