Augment the Kraken! Increasing the scientific capability and capacity of the NSF's most powerful supercomputer

University Of Tennessee Knoxville, Knoxville TN

Investigators

Abstract

1041709 Andrews This award 12 cabinets of compute nodes, with an additional 144 TF and 18 TB of memory, to Kraken, taking it to 1,174 TF and 147 TB. This will increase its node count from 8,256 to 9,408 by adding 1,152 nodes. With the addition of 1,152 nodes, Kraken will have significant room left to run other jobs simultaneously with 8,192 node jobs. Indeed, it will be possible to run a 8,192 job and a 1,024 node job at the same time. Given the ?bi-modal? distribution of the user jobs, with most job sizes at either 8,192 and above, or at 1,024 and below, this will greatly improve the responsiveness of the machine for users. The Kraken upgrade will allow users to extend their codes by scaling them up to the largest NSF supercomputer, with over 110,000 cores, implementing new models that could not have been run before this upgrade. There already a number of users scaling their applications to the full size of the current Kraken, and some of them are already prepared to use a larger system. Additionally, this will help facilitate scaling for applications already chosen to run on the Track 1 Blue Waters system, and prepare them for that very large machine.