CMA-Cube: A scalable reconfigurable accelerator with 3-D wireless inductive coupling interconnect

CMA-Cube is the second prototype of building block scalable reconfigurable accelerator using inductive coupling interconnect. It uses the wireless inductive coupling interconnect as a packet switching network which connects accelerators. As an accelerator core, CMA (Cool Mega Array), which consists of a large coarse-grained PE array with combinatorial circuits and tiny micro-controller, is applied. Evaluation results of Cube-1 Quad Core which consists of a host embedded CPU and three CMA-Cubes achieved 3.15 times performance acceleration as that without accelerators when JPEG decoder is executed.