Reprints from my posting to SAN-Tech Mailing List and ...


[san-tech][03583] NCSA Blue Waters deploys Redundant Arrays of Independent Tapes (RAIT)

Date: Thu, 12 Jul 2012 16:03:02 +0900
2012年 4月 16日~18日に開催された HPC User Forumの資料を見ていて気付いた
のですが、NCSA Blue Watersのテープシステム (Spectra Logic T-Finity Libraries
380 raw petabytes (PB)) では、Redundant Arrays of Independent Tapes (RAIT)

"Blue Waters"
 Merle Giles, NCSA Business & Economic Development
 HPC User Forum - Richmond VA - April 2012

RAIT (Page 12)
*)Multiple data classes depending on file size to take advantage of tape
  writing strategies
    4+1, 7+2, 10+2, etc
    Trade off latency vs performance - Depends on the size of the data
*)Multiple levels of RAIT part of the requirements
Blue Waters Project

[san-tech][03582] Slide: LRZ SuperMUC at Workshop: Toward Green Computing Centers (2012/06/28), TERATEC Forum 2012

Date: Thu, 12 Jul 2012 11:32:48 +0900
"How many DRAMs does it take to populate a supercomputer?
 746,496 plus a lot of hot water for cooling"
 July 25, 2012, Denali Memory Report

2012年 6月の TOP500で 4位 (インテル互換系システムとして最速) となった、
Leibniz-Rechenzentrum (LRZ) SuperMUCの講演資料です。
SuperMUCは IBM System x iDataPlexによる温水冷却システムです;

"Energy-efficient High Performance Computing with SuperMUC"
 Arndt BODE, Director
 Leibniz-Supercomputer Center of the Bavarian Academy of Sciences LRZ
 June 28, 2012
 Toward Green Computing Centers, Workshop at TERATEC Forum 2012

SuperMUC Petascale System


[san-tech][03578] Slide: International Workshop on Runtime and Operating Systems for Supercomputers (ROSS 2012), (2012/06/29)

Date: Wed, 11 Jul 2012 14:43:18 +0900

International Workshop on
Runtime and Operating Systems for Supercomputers (ROSS 2012)
Held in conjunction with ICS 2012, Venice, Italy, June 29, 2012

"The complexity of node architectures in supercomputers increases
 as we cross petaflop milestones on the way towards Exascale.
 Increasing levels of parallelism in multi- and many-core chips and
 emerging heterogeneity of computational resources coupled with energy
 and memory constraints force a reevaluation of our approaches towards
 operating systems and runtime environments. The International Workshop
 on Runtime and Operating Systems for Supercomputers provides a forum
 for researchers to exchange ideas and discuss research questions that
 are relevant to upcoming supercomputers."


[san-tech][03577] Slide/Video: Velocity 2012 - O'Reilly Conferences (2012/06/25 -27)

Date: Tue, 10 Jul 2012 19:21:30 +0900
2012年 6月 25日~27日に開催された

O'Reilly Velocity 2012
Web Performance & Operations Conference, June 25 - 27, 2012

の Slide/Videoが公開されています:
Velocity 2012 Speaker Slides & Video
*)Web Performance
*)Velocity Culture
*)Mobile Performance

Velocity 2012 Schedule

YouTube List:
Velocity US 2012, O'Reilly
O'Reilly Channel