Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

The Myrinet network doesn appear to fully functioning. How do I debug it?

April 26, 2017appear debug fully functioning myrinet Network

0

Posted

The Myrinet network doesn appear to fully functioning. How do I debug it?

1 Answer

0

Posted

We use High-Performance Linpack (HPL), the program used to rank computers on the Top500 Supercomputer lists, to debug Myrinet. HPL is installed on all compute nodes by default. To run HPL on the compute nodes, see Interactive Mode. Then it is just a matter of methodically testing the compute nodes, that is, start with compute-0-0 and compute-0-1 and make sure they are functioning, then move to compute-0-2 and compute-0-3, etc. When you find a suspected malfunctioning compute node, the first thing to do is verify the Myrinet map (this contains the routes from this compute node to all the other Myrinet-connected compute nodes).