Reducing application runtime variability on Jaguar XT5
Operating system (OS) noise is defined as interference generated by the OS that prevents a
compute core from performing``useful''work. Compute node kernel daemons, network
interfaces, and other OS related services are major sources of such interference. This
interference on individual compute cores can vary in duration and frequency, and can cause
de-synchronization (jitter) in collective communication tasks and thus results in variable
(degraded) overall parallel application performance. This behavior is more observable in …
compute core from performing``useful''work. Compute node kernel daemons, network
interfaces, and other OS related services are major sources of such interference. This
interference on individual compute cores can vary in duration and frequency, and can cause
de-synchronization (jitter) in collective communication tasks and thus results in variable
(degraded) overall parallel application performance. This behavior is more observable in …
[PDF][PDF] Reducing application runtime variability on jaguar xt5
Operating system (OS) noise is defined as interference generated by the OS that prevents a
compute core from performing “useful” work. Compute node kernel daemons, network
interfaces, and other OS related services are major sources of such interference. This
interference on individual compute cores can vary in duration and frequency, and can cause
de-synchronization (jitter) in collective communication tasks and thus results in variable
(degraded) overall parallel application performance. This behavior is more observable in …
compute core from performing “useful” work. Compute node kernel daemons, network
interfaces, and other OS related services are major sources of such interference. This
interference on individual compute cores can vary in duration and frequency, and can cause
de-synchronization (jitter) in collective communication tasks and thus results in variable
(degraded) overall parallel application performance. This behavior is more observable in …
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