US DoE (Argonne) to acquire AMD+Nvidia supercomputer as testbed for delayed Intel-based exascale supercomputer

From Reuters: The Nvidia and AMD machine, to be called Polaris, will not be a replacement for the Intel-based Aurora machine slated for the Argonne National Lab near Chicago, which was poised to be the nation's fastest computer when announced in 2019.

Instead, Polaris, which will come online this year, will be a test machine for Argonne to start readying its software for the Intel machine, the people familiar with the matter said.

Cray and AMD will build 1.5 exaFLOPS supercomputer for DOE

From Ars Technica: AMD and Cray have announced that they're building "Frontier," a new supercomputer for the Department of Energy at Oak Ridge National Laboratory. The goal is to deliver a system that can perform 1.5 exaflops: 1.5×1018 floating point operations per second.

The current (Nov 2018) Top 500 leader, Summit at ORNL, runs at 0.2 exaflops.