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JOSHUA: Symmetric Active/Active Replication for Highly Available HPC Job and Resource Management

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JOSHUA: Symmetric Active/Active Replication for Highly Available HPC Job and Resource Management
Most of today‘s HPC systems employ a single head node for control, which represents a single point of failure as it interrupts an entire HPC system upon failure. Furthermore, it is also a single point of control as it disables an entire HPC system until repair. One of the most important HPC system service running on the head node is the job and resource management. If it goes down, all currently running jobs loose the service they report back to. They have to be restarted once the head node is up and running again. With this paper, we present a generic approach for providing symmetric active/active replication for highly available HPC job and resource management. The JOSHUA solution provides a virtually synchronous environment for continuous availability without any interruption of service and without any loss of state. Replication is performed externally via the PBS service interface without the need to modify any service code. Test results as well as availability analysis of our p...
Kai Uhlemann, Christian Engelmann, Stephen L. Scot
Added 10 Jun 2010
Updated 10 Jun 2010
Type Conference
Year 2006
Where CLUSTER
Authors Kai Uhlemann, Christian Engelmann, Stephen L. Scott
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