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Computing Facilities & Capabilities. Julian Borrill Computational Research Division, Berkeley Lab & Space Sciences Laboratory, UC Berkeley. Computing Issues. Data Volume Data Processing Data Storage Data Security Data Transfer Its all about the data. Data Volume.
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Computing Facilities & Capabilities Julian Borrill Computational Research Division, Berkeley Lab & Space Sciences Laboratory, UC Berkeley
Computing Issues • Data Volume • Data Processing • Data Storage • Data Security • Data Transfer Its all about the data
Data Volume • Planck data volume drives (almost) everything • LFI : • 22 detectors with 32.5, 45 & 76.8 Hz sampling • 4 x 1010 samples per year • 0.2 TB time-ordered data + 1.0 TB full detector pointing data • HFI : • 52 detectors with 200 Hz sampling • 3 x 1011 samples per year • 1.3 TB time-ordered data + 0.2 TB full boresight pointing data • LevelS (e.g. CTP “Trieste” simulations) : • 4 LFI detectors with 32.5 Hz sampling • 4 x 109 samples per year • 2 scans x 2 beams x 2 samplings x 7 components + 2 noises • 1.0 TB time-ordered data + 0.2 TB full detector pointing data
Data Processing • Operation count scales linearly (& inefficiently) with # analyses, # realizations, # iterations, # samples : 100 x 100 x 100 x 100 x 1011 ~ O(10) Eflop • NERSC • Seaborg : 6080 CPU, 9 Tf/s • Jacquard : 712 CPU, 3 Tf/s (21 x Magique-II) • Bassi : 888 CPU, 7 Tf/s • NERSC-5 : O(100) Tf/s, first-byte in 2007 • O(2 x 106) CPU-hours/year => O(4) Eflop/yr (10GHz/5%) • USPDC cluster • Specification & location TBD, first-byte in 2007 • O(100) CPU x 7000 hours/year => O(0.4) Eflop/yr (5GHz/3%) • IPAC small cluster dedicated to ERCSC
Processing 9 Tf/s NERSC Seaborg 3 Tf/s NERSC Jacquard 7 Tf/s NERSC Bassi 0.1 Tf/s ERCSC Cluster 0.5 Tf/s USPDC Cluster 100 Tf/s NERSC 5
Data Storage • Archive at IPAC • mission data • O(10) TB • Long-term at NERSC using HPSS • mission + simulation data & derivatives • O(2) PB • Spinning disk at USPDC cluster & at NERSC using NGF • current active data subset • O(2 - 20) TB • Processor memory at USPDC cluster & at NERSC • running job(s) • O(1 - 10+) GB/CPU & O(0.1 - 10) TB total
Processing + Storage 9 Tf/s 6 TBNERSC Seaborg 2/20 PB NERSC HPSS 3 Tf/s 2 TBNERSC Jacquard 10 TB IPAC Archive 20/200 TB NERSC NGF 7 Tf/s 4 TB NERSC Bassi 0.1 Tf/s 50 GBERCSC Cluster 2 TB USPDC Cluster 0.5 Tf/s 200 GB USPDC Cluster 100 Tf/s 50 TB NERSC 5
Data Security • UNIX filegroups • special account : user planck • permissions _r__/___/___ • Personal keyfob to access planck acount • real-time grid-certification of individuals • fobs issued & managed by IPAC • single system for IPAC, NERSC & USPDC cluster • Allows securing of selected data • e.g. mission vs simulation • Differentiates access to facilities and to data • standard personal account & special planck account
Processing + Storage + Security IPAC KEYFOB REQUIRED 9 Tf/s 7 TB NERSC Seaborg 2/20 PB NERSC HPSS 3 Tf/s 2 TB NERSC Jacquard 10 TB IPAC Archive 20/200 TB NERSC NGF 7 Tf/s 4 TB NERSC Bassi 0.1 Tf/s 50 GB ERCSC Cluster 2 TB USPDC Cluster 0.5 Tf/s 200 GB USPDC Cluster 100 Tf/s 50 TBNERSC 5
Data Transfer • From DPCs to IPAC • transatlantic tests being planned • From IPAC to NERSC • (check networks/bandwidth with Bill Johnston) • From NGF to/from HPSS • (check bandwidth with David Skinner) • From NGF to memory (most real-time critical) • within NERSC • (check bandwidths with David Skinner) • offsite depends on location • 10Gb/s to LBL over dedicated data link on Bay Area MAN
Processing + Storage + Security + Networks IPAC KEYFOB REQUIRED 9 Tf/s 7 TB NERSC Seaborg 2/20 PB NERSC HPSS 3 Tf/s 2 TBNERSC Jacquard 10 Gb/s 10 Gb/s 10 TB IPAC Archive 20/200 TB NERSC NGF DPCs 10 Gb/s ? 10 Gb/s 10 Gb/s 7 Tf/s 4TB NERSC Bassi ? ? ? 30 Gb/s 0.1 Tf/s 50 GB ERCSC Cluster 2 TB USPDC Cluster 0.5 Tf/s 200 GBUSPDC Cluster 100 Tf/s 50 TB NERSC 5 ?
