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Retired Systems



Hopper, a Cray XE6, with 153,216 compute cores, 217 TB of memory and 2PB of disk is the largest system at NERSC. Read More »



Carver, an IBM iDataPlex system, provides excellent CPU performance, good energy efficiency per flop, and a familiar environment for mid-range parallel applications. Carver's computational nodes contain 2240 Intel Nehalem quad-core processors, 160 Westmere 6-core processors, and 8 Nehalem-EX 8-core processors, for a total of 9,984 cores. Read More »

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Jesup Testbed

Jesup is a Testbed system used to explore emerging hardware and software technologies including Hadoop, Flash Storage, and NoSQL. Read More »


Dirac GPU Cluster

Dirac GPU testbed system was shut down permanently and retired from service at 17:00 on Friday, December 12, 2014. Read More »

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Edison Phase I

Edison Phase I system was retired on 06/24/2013 for the Phase II installation Read More »


Euclid - Retired 01/31/2013

Euclid was retired from NERSC service on 31 January, 2013. View this web page to see migration options. Read More »


Franklin - Retired 04/30/12

NERSC's "Franklin" Cray XT4 system was retired from service on April 30, 2012. Read More »



NERSC's "Bassi" IBM POWER5 system was retired from service on April 7, 2010. Read More »