SW26010

The SW26010 is a 260-core manycore processor designed by the National High Performance Integrated Circuit Design Center in Shanghai. It implements the Sunway architecture, a 64-bit reduced instruction set computing (RISC) architecture designed by China. The SW26010 has four clusters of 64 Compute-Processing Elements (CPEs) which are arranged in an eight-by-eight array. The CPEs support SIMD instructions, and are capable of performing eight double-precision floating-point operations per cycle. Each cluster is accompanied by a more conventional general-purpose core called the Management Processing Element (MPE) that provides supervisory functions. Each cluster has its own dedicated DDR3 SDRAM controller, and a memory bank with its own address space. The processor runs at a clock speed of 1.45 GHz.

The CPE cores feature 64 KB of scratchpad memory for data and 16 KB for instructions, and communicate via a network on a chip, instead of having a traditional cache hierarchy. The MPE's have a more traditional setup, with 32 KB L1 instruction and data caches and a 256 KB L2 cache. Finally, the on-chip network connects to a single system interconnection interface that connects the chip to the outside world.

The SW26010 is used in the Sunway TaihuLight supercomputer, which, as of November 2016^[update], is the world's fastest supercomputer as ranked by the TOP500 project. The system uses 40,960 SW26010s to obtain 93.01 PFLOPS on the LINPACK benchmark.

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