Patent ID: 8516487
Filing Date: 2013-08-20
Classification: G06F

Abstract:
1. A computer implemented method for dynamically relocating a job executing on a plurality of compute nodes in a high performance computing (HPC) system comprising: a relocation manager performs the steps of: 1a) determining to dynamically relocate the job executing on the plurality of compute nodes of the HPC system, where determining to dynamically relocate the job includes accessing a dynamic relocation control parameter in a job record associated with the job to determine if dynamic relocation is currently allowed for the job; 2a) signaling the plurality of compute nodes to pause execution at the next global collective operation using a message passing interface (MPI) to ensure a quiesced messaging state; 3a) waiting until the plurality of compute nodes of the job have signaled they have paused in response to a global collective operation; 4a) moving the job to a new location on the multi-node computer system; and 5a) resuming the job at the new location; wherein each compute node performs the steps of: 1b) receiving the signal to pause execution; 2b) setting a global collective trap in response to the signal to pause execution by a relocation trap mechanism associated with an operating system kernel at the next global collective operation; 3b) the job calling the global collective operation to the message passing interface; 4b) stopping the job and signaling the relocation manager in response to the global collective operation; and