Edinburgh DiRAC Resource Grant

Lead Research Organisation: University of Edinburgh
Department Name: Sch of Physics and Astronomy

Abstract

DiRAC (Distributed Research utilising Advanced Computing) is the integrated supercomputing facility for theoretical modelling and HPC-based research in particle physics, nuclear physics, astronomy and cosmology, areas in which the UK is world-leading. It was funded as a result of investment of £12.32 million, from the Government's Large Facilities Capital Fund, together with investment from STFC and from universities. In 2012, the DiRAC facility was upgraded with a further £15 million capital investment from government (DiRAC-2).

The DiRAC facility provides a variety of computer architectures, matching machine architecture to the algorithm design and requirements of the research problems to be solved. The science facilitated includes: using supercomputers to enable scientists to calculate what theories of the early universe predict and to test them against observations of the present universe; undertaking lattice field theory calculations whose primary aim is to increase the predictive power of the Standard Model of elementary particle interactions through numerical simulation of Quantum Chromodynamics; carrying out state-of-the-art cosmological simulations, including the large-scale distribution of dark matter, the formation of dark matter haloes, the formation and evolution of galaxies and clusters, the physics of the intergalactic medium and the properties of the intracluster gas.

This grant is to support the continued operation of the DiRAC facilities until 2017 to ensure that the UK remains one of the world-leaders of theoretical modelling in particle physics, astronomy and cosmology.

Planned Impact

The high-performance computing applications supported by DiRAC typically involve new algorithms and implementations optimised for high energy efficiency which impose demands on computer architectures that the computing industry has found useful for hardware and system software design and testing.

DiRAC researchers have on-going collaborations with computing companies that maintain this strong connection between the scientific goals of the DiRAC Consortium and the development of new computing technologies that drive the commercial high-performance computing market, with economic benefits to the companies involved and more powerful computing capabilities available to other application areas including many that address socio-economic challenges.

Publications

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Vidal J (2020) Efficiency of tidal dissipation in slowly rotating fully convective stars or planets in Monthly Notices of the Royal Astronomical Society

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Elliott E (2021) Efficient exploration and calibration of a semi-analytical model of galaxy formation with deep learning in Monthly Notices of the Royal Astronomical Society

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Yachmenev A (2021) Electric quadrupole transitions in carbon dioxide. in The Journal of chemical physics

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Aarts G (2015) Electrical conductivity and charge diffusion in thermal QCD from the lattice in Journal of High Energy Physics

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Allanson O (2021) Electron Diffusion and Advection During Nonlinear Interactions With Whistler-Mode Waves in Journal of Geophysical Research: Space Physics

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Kukstas E (2020) Environment from cross-correlations: connecting hot gas and the quenching of galaxies in Monthly Notices of the Royal Astronomical Society

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Attanasio F (2022) Equation of state from complex Langevin simulations in EPJ Web of Conferences

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Creci G (2020) Evolution of black hole shadows from superradiance in Physical Review D

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Ryan S (2021) Excited and exotic bottomonium spectroscopy from lattice QCD in Journal of High Energy Physics

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Yurchenko S (2020) ExoMol line lists - XL. Rovibrational molecular line list for the hydronium ion (H3O+) in Monthly Notices of the Royal Astronomical Society

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Owens A (2022) ExoMol line lists - XLVII. Rovibronic molecular line list of the calcium monohydroxide radical (CaOH) in Monthly Notices of the Royal Astronomical Society

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Yurchenko S (2020) ExoMol line lists - XXXIX. Ro-vibrational molecular line list for CO2 in Monthly Notices of the Royal Astronomical Society

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Yurchenko S (2020) ExoMol line lists - XXXVIII. High-temperature molecular line list of silicon dioxide (SiO2) in Monthly Notices of the Royal Astronomical Society

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Yurchenko S (2020) ExoMol molecular line lists - XXXVII. Spectra of acetylene in Monthly Notices of the Royal Astronomical Society

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Van Loon M (2021) Explaining the scatter in the galaxy mass-metallicity relation with gas flows in Monthly Notices of the Royal Astronomical Society

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Stafford S (2020) Exploring extensions to the standard cosmological model and the impact of baryons on small scales in Monthly Notices of the Royal Astronomical Society

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Van Daalen M (2020) Exploring the effects of galaxy formation on matter clustering through a library of simulation power spectra in Monthly Notices of the Royal Astronomical Society

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Cummins D (2022) Extreme pebble accretion in ringed protoplanetary discs in Monthly Notices of the Royal Astronomical Society

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Miles P (2020) Fallback Rates from Partial Tidal Disruption Events in The Astrophysical Journal

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Hernández-Aguayo C (2022) Fast full N-body simulations of generic modified gravity: derivative coupling models in Journal of Cosmology and Astroparticle Physics

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Oppenheimer B (2020) Feedback from supermassive black holes transforms centrals into passive galaxies by ejecting circumgalactic gas in Monthly Notices of the Royal Astronomical Society

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Kong S (2022) Filament formation via collision-induced magnetic reconnection - formation of a star cluster in Monthly Notices of the Royal Astronomical Society

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Cataldi P (2022) Fingerprints of modified gravity on galaxies in voids in Monthly Notices of the Royal Astronomical Society

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Hergt L (2022) Finite inflation in curved space in Physical Review D

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Aarts G (2016) Finite Temperature Lattice QCD --- Baryons in the Quark--Gluon Plasma in Acta Physica Polonica B Proceedings Supplement

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Wilkins S (2022) First Light and Reionisation Epoch Simulations (FLARES) - VI. The colour evolution of galaxies z  = 5-15 in Monthly Notices of the Royal Astronomical Society

 
Description In December 2009, the STFC Facility, DiRAC, was established to provide distributed High Performance Computing (HPC) services for theoretical modelling and HPC-based research in particle physics, astronomy and cosmology. DiRAC provides a variety of computer architectures, matching machine architecture to the algorithm design and requirements of the research problems to be solved. This grant funds the continued operation of the 1.3Pflop/s Blue Gene/Q system at the University of Edinburgh, which was co-developed by Peter Boyle (University of Edinburgh) and IBM to run with high energy efficiency for months at a time on a single problem to solve some of the most complex problems in physics, particularly the strong interactions of quarks and gluons. The DiRAC Facility supports over 250 active researchers at 27 UK HEIs. This includes the research projects of 100 funded research staff (PDRAs and Research Fellows), over 50 post-graduate projects, and £1.6M of funded research grants.
Exploitation Route Theoretical results obtained input to a range of experimental programmes aiming to increase our understanding of Nature. Algorithms and software developed provide input to computer design.
Sectors Digital/Communication/Information Technologies (including Software)

URL http://dirac.ac.uk/
 
Description Intel IPAG QCD codesign project 
Organisation Intel Corporation
Department Intel Corporation (Jones Farm)
Country United States 
Sector Private 
PI Contribution We have collaborated with Intel corporation since 2014 with $720k of total direct funding, starting initially as an Intel parallel computing centre, and expanding to direct close collaboration with Intel Pathfinding and Architecture Group.
Collaborator Contribution We have performed detailed optimisation of QCD codes (Wilson, Domain Wall, Staggered) on Intel many core architectures. We have investigated the memory system and interconnect performance, particularly on Intel's latest interconnect hardware called Omnipath. We found serious performance issues and worked with Intel to plan a solution and this has been verified and is available as beta software. It will reach general availability in the Intel MPI 2019 release, and allow threaded concurrent communications in MPI for the first time. A joint paper on the resolution to this was written with the Intel MPI team, and the application of the same QCD programming techniques to machine learning gradient reduction was applied in the paper to the Baidu Research all reduce library, demonstrating a 10x gain for this critical step in machine learning in clustered environments. We are also working with Intel verifying future architectures that will deliver the exascale performance in 2021.
Impact We have performed detailed optimisation of QCD codes (Wilson, Domain Wall, Staggered) on Intel many core architectures. We have investigated the memory system and interconnect performance, particularly on Intel's latest interconnect hardware called Omnipath. We found serious performance issues and worked with Intel to plan a solution and this has been verified and is available as beta software. It will reach general availability in the Intel MPI 2019 release, and allow threaded concurrent communications in MPI for the first time. A joint paper on the resolution to this was written with the Intel MPI team, and the application of the same QCD programming techniques to machine learning gradient reduction was applied in the paper to the Baidu Research all reduce library, demonstrating a 10x gain for this critical step in machine learning in clustered environments. This collaboration has been renewed annually in 2018, 2019, 2020. Two DiRAC RSE's were hired by Intel to work on the Turing collaboration.
Start Year 2016