Report on the TianHe-2A System

TitleReport on the TianHe-2A System
Publication TypeTech Report
Year of Publication2017
AuthorsDongarra, J.
Technical Report Series TitleInnovative Computing Laboratory Technical Report
Date Published2017-09
InstitutionUniversity of Tennessee

The TianHe-2A (TH-2A) compute system, designed by China’s National University of Defense Technology (NUDT), is an upgrade of the TianHe-2 (TH-2) system. TianHe is sometimes referred to as “Milkyway,” and the latest iteration of this system is currently undergoing assembly and testing at China’s National Supercomputer Center in Guangzhou (NSCC-GZ). At the time of this report, the system is 25% complete and should be fully functional by November 2017. The most significant enhancement to the system is the upgrade to the TianHe-2 nodes; the old Intel Xeon Phi Knights Corner (KNC) accelerators will be replaced with a proprietary accelerator called the Matrix-2000. In addition, the network has been enhanced, the memory increased, and the number of cabinets expanded. The completed system, when fully integrated with 4,981,760 cores and 3.4 PB of primary memory, will have a theoretical peak performance of 94.97 Pflop/s, which is roughly double the performance of the existing TianHe-2 system. NUDT also developed the heterogeneous programming environment for the Matrix-20002 with support for OpenMP and OpenCL.