Cray's pre-exascale Shasta supercomputer gets energy research boffins hot under collar | 10/31/2018 | Staff
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Cray has announced Shasta – a near-composable planned supercomputer supporting multiple CPUs, GPUs and interconnects, including its new high-speed Slingshot Ethernet-compatible fabric that fixes the noisy neighbour network congestion problem.

Shasta is designed to run multiple workload types: Traditional HPC-like modelling and simulation, AI and analytics. It can be built using standard 19-inch or water-cooled racks, including warm-water cooling.

Racks - Blades - Processors - Blade - System

These liquid-cooled racks are designed to hold 64 compute blades with multiple processors per blade. The system is capable of supporting processors exceeding 500W.

It has clustered processing nodes, Cray's ClusterStor and other storage, and there can be more than 100 cabinets.

Side - Things - Support - Intel - AMD

The compute side of things includes support for Intel and AMD x86 CPUs, Marvell Thunder X2 ARM processors, GPUs, such as Nvidia Teslas and AMD Radeons, and FPGAs. These can be mixed and matched in a single Shasta system. Several interconnect options are available: Cray's new Slingshot, Mellanox InfiniBand and Intel's OmniPath, and these can also be mixed and matched in a Shasta system.

Cray is developing the Shasta system management software and it should enable workloads to be created that use specific processors, interconnects and storage, which would look like a form of composability.

Systems - Quarter

Shasta systems should be available in the fourth quarter of 2019.

This is an interconnect using switches with a Rosetta ASIC inside. These have 64 x 200Gbit/s ports and 12.8Tbit/s of bi-directional bandwidth. Slingshot supports up...
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