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Handling oom/malloc Failures

Because we run individual nodes without swap space, memory demands must be met locally. To do this set the Linux tuning parameters, overcommit_memory and overcommit_ratio, as follows.

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Limiting access to cluster compute nodes

To reconfigure the system so that all interaction between the compute cluster and the VMWare-based SSP is moderated by the RedHat-native OS, do the following:

  • Reconfigure VMWare to add NAT
  • Reconfigure Red Hat
  • Reconfigure the VMWare SSP

Note that these instructions apply to SiCortex release 2.2.b

SC072
Last Updated: 08/04/2008

Marginal MGTnet links can cause boot failure

Typically, SiCortex systems are configured with one (SC648) or four (SC5832) gigabyte Ethernet ports that connect the SSP to management nodes in the system (m[0,2,4,6]n6 on the SC5832, and m0n6 on the SC648).

Software
Last Updated: 06/11/2008