Preparing NERSC users for Cori, a Cray XC40 system with Intel many integrated cores. (25th August 2017)
- Record Type:
- Journal Article
- Title:
- Preparing NERSC users for Cori, a Cray XC40 system with Intel many integrated cores. (25th August 2017)
- Main Title:
- Preparing NERSC users for Cori, a Cray XC40 system with Intel many integrated cores
- Authors:
- He, Yun
Cook, Brandon
Deslippe, Jack
Friesen, Brian
Gerber, Richard
Hartman‐Baker, Rebecca
Koniges, Alice
Kurth, Thorsten
Leak, Stephen
Yang, Woo‐Sun
Zhao, Zhengji
Baron, Eddie
Hauschildt, Peter - Other Names:
- Xhafa Fatos guestEditor.
Michael Scott guestEditor.
He Yun guestEditor. - Abstract:
- Summary: The newest NERSC supercomputer Cori is a Cray XC40 system consisting of 2, 388 Intel Xeon Haswell nodes and 9, 688 Intel Xeon‐Phi "Knights Landing" (KNL) nodes. Compared to the Xeon‐based clusters NERSC users are familiar with, optimal performance on Cori requires consideration of KNL mode settings; process, thread, and memory affinity; fine‐grain parallelization; vectorization; and use of the high‐bandwidth MCDRAM memory. This paper describes our efforts preparing NERSC users for KNL through the NERSC Exascale Science Application Program, Web documentation, and user training. We discuss how we configured the Cori system for usability and productivity, addressing programming concerns, batch system configurations, and default KNL cluster and memory modes. System usage data, job completion analysis, programming and running jobs issues, and a few successful user stories on KNL are presented.
- Is Part Of:
- Concurrency and computation. Volume 30:Number 1(2018)
- Journal:
- Concurrency and computation
- Issue:
- Volume 30:Number 1(2018)
- Issue Display:
- Volume 30, Issue 1 (2018)
- Year:
- 2018
- Volume:
- 30
- Issue:
- 1
- Issue Sort Value:
- 2018-0030-0001-0000
- Page Start:
- n/a
- Page End:
- n/a
- Publication Date:
- 2017-08-25
- Subjects:
- cross compilation -- Intel Xeon Phi -- KNL -- performance optimization -- process and thread affinity -- user support
Parallel processing (Electronic computers) -- Periodicals
Parallel computers -- Periodicals
004.35 - Journal URLs:
- http://onlinelibrary.wiley.com/ ↗
- DOI:
- 10.1002/cpe.4291 ↗
- Languages:
- English
- ISSNs:
- 1532-0626
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3405.622000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 5421.xml