Raijin supercomputer receives IBM Power Systems


By Technology Decisions Staff
Monday, 30 October, 2017


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IBM’s latest Power Systems have been integrated with National Computational Infrastructure’s (NCI) supercomputer, Raijin.

The technology will enable NCI to introduce an open architecture solution for HPC technology in its data centre.

This will provide greater flexibility and efficiency to support the needs of Australian researchers.

“To be the first ever Australian organisation to join the OpenPOWER Foundation provides recognition of NCI’s standing and represents a step toward a more heterogeneous architecture,” said Allan Williams, associate director (services and technologies) at NCI.

NCI staff have been working closely with Australia’s scientific community to qualify a range of memory-intensive applications for use under IBM’s architecture. With further input from NCI’s optimisation team, these applications have produced impressive performance benchmarks using Power Systems.

“IBM’s Power Systems scale scientific simulation and modelling to new heights in NCI’s Raijin supercomputer,” said Dave Turek, vice president of exascale systems at IBM.

“The extraordinary bandwidth in Power Systems provides a significant performance advantage, and we look forward to scientists exploiting those capabilities now and into the future.”

NCI is the first institution to port Q-Chem, a quantum chemistry package, over to Power Systems. Initial benchmarks of this optimisation have outpaced the same application running under Broadwell x86 architecture, opening new and immediate possibilities for computational chemists.

Additionally, NCI’s optimisation of NAMD molecular dynamics code on Power Systems saw performance gains when compared to existing Broadwell x86 architecture. Initial benchmark results of MILC in Power Systems also saw modest to significant improvements over existing x86 systems.

Based on the benchmarks from the research testbed, it is anticipated that a wide range of scientific disciplines could eventually benefit from optimised performance under POWER architecture, including the fields of physics, biology and chemistry.

This new software exists alongside over 3000 other applications that have already been optimised by NCI’s HPC optimisation team for the existing x86 and GPU systems that power Raijin. NCI will continue a process of Power Systems qualification and optimisation for other scientific applications to meet researcher demand.

NCI is the first institution to merge both POWER and x86 architectures into the same scheduling system, offering diversity, accessibility and freedom of choice for researchers accessing HPC through NCI. The IBM Power Systems are accessible through the existing PBSPro scheduler and have been integrated into NCI’s LDAP and accounting systems.

Furthermore, the Power Systems will benefit from Mellanox EDR and FDR interconnect at speeds of up to 100 Gbps, granting access to over 40 PB of fast Lustre storage that is already available across other Raijin platforms.

NCI’s commitment to investing in the latest computing resources continues with the integration of IBM’s Power Systems into the Raijin cluster. This integration builds on NCI’s consolidated approach to advanced computing, combining high-performance CPU and GPU clusters with the fastest file systems in the Southern Hemisphere — a heterogenous environment that will best serve the research community’s needs.

Image credit: ©iStockphoto.com/Baran Özdemir

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