NDLI: The universe at extreme scale: multi-petaflop sky simulation on the BG/Q

Content Provider	ACM Digital Library
Author	Peterka, Tom Lukić, Zarija Daniel, David Morozov, Vitali Habib, Salman Kumaran, Kalyan Finkel, Hal Pope, Adrian Heitmann, Katrin Frontiere, Nicholas Insley, Joe Fasel, Patricia
Abstract	Remarkable observational advances have established a compelling cross-validated model of the Universe. Yet, two key pillars of this model -- dark matter and dark energy -- remain mysterious. Next-generation sky surveys will map billions of galaxies to explore the physics of the 'Dark Universe'. Science requirements for these surveys demand simulations at extreme scales; these will be delivered by the HACC (Hybrid/Hardware Accelerated Cosmology Code) framework. HACC's novel algorithmic structure allows tuning across diverse architectures, including accelerated and multi-core systems. On the IBM BG/Q, HACC attains unprecedented scalable performance -- currently 6.23 PFlops at 62% of peak and 92% parallel efficiency on 786,432 cores (48 racks) -- at extreme problem sizes with up to almost two trillion particles, larger than any cosmological simulation yet performed. HACC simulations at these scales will for the first time enable tracking individual galaxies over the entire volume of a cosmological survey.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISBN	9781467308045
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2012-11-10
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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The universe at extreme scale: multi-petaflop sky simulation on the BG/Q