The Cray XC50 is a massively parallel multiprocessor supercomputer manufactured by Cray.^[1] The machine can support Intel Xeon processors, as well as Cavium ThunderX2 processors, Xeon Phi processors and NVIDIA Tesla P100 GPUs.^[2] The processors are connected by Cray's proprietary "Aries" interconnect, in a dragonfly network topology.^[1] The XC50 is an evolution of the XC40, with the main difference being the support of Tesla P100 processors and the use of Cray software release CLE 6 or 7.^[3]

Deployed Cray XC50 systems

India

• Indian Institute of Technology, Bombay (IITB) has deployed a Cray XC50 system named Spacetime with a peak performance of 1 petaflops coupled with Cray ClusterStor L300 Lustre storage system.^[4]

Japan

• The Japanese National Institutes for Quantum and Radiological Science and Technology has deployed on 2018 26th July a XC50 to support the ITER fusion project.^[5] At deployment, it will not be as fast as the Swiss Piz Daint computer; however, it is predicted as one of the top 30 supercomputers in the world, and the fastest available to fusion researchers.^[5]
• The Japan Meteorological Agency is planning to deploy 2 Cray XC50s to help with weather forecasting.^[6] The systems will be deployed with the assistance of Cray and Hitachi.
• The Center for Computational Astrophysics at the National Astronomical Observatory of Japan have deployed a XC50 named ATERUI II, named after a Japanese chief.^[7][8][9] It has 40,200 Xeon cores, with a peak performance of 3.087 petaflops.^[8][10]
• The Railway Technical Research Institute (RTRI) will install five XC50 cabinets and a 720 TB Cray ClusterStor L300 for storage to gain insights on rail transportation. This is their third Cray machine after acquiring an XC30 and CS300, both in 2013.^[11]
• Yokohama City University has selected the air-cooled XC50-AC for life sciences research.^[12]

New Zealand

• New Zealand Science Infrastructure (NeSI) is deploying a XC50 at their High Performance Computing Facility in Wellington.^[13]

South Korea

• The Institute for Basic Science (IBS) is installing a 1.43-petaflop XC50, named Aleph, for climate physics research.^{[14][11][15][16]}

Switzerland

• The Swiss National Supercomputing Centre in Lugano has a 361,760-core XC50 called Piz Daint.^[17] This has been upgraded from a Cray XC30 and Cray XC40 configurations.

United Kingdom

• Cray is developing a XC50 system with ARM processors called Isambard.^[18][19] This will be used for a consortium of Bristol, Bath, Cardiff and Exeter universities.^[19]