A 1.07 Tbit/s 128×128 swizzle network for SIMD processors

A novel circuit switched swizzle network called XRAM is presented. XRAM uses an SRAM-based approach producing a compact footprint that scales well with network dimensions while supporting all permutations and multicasts. Capable of storing multiple shuffle configurations and aided by a novel sense-amp for robust bit-line evaluation, a 128×128 XRAM fabricated in 65nm achieves a bandwidth exceeding 1Tbit/s, enabling a 64-lane SIMD engine operating at 0.72V to save 46.8% energy over an iso-throughput conventional 16-lane implementation at 1.1V.