Overwrite Configuration Technique in Multicast Configuration Scheme for Dynamically Reconfigurable Processor Arrays

A new configuration scheduling algorithm in multicast configuration scheme is proposed and evaluated over re-duction ratio of configuration data transfer cycles and power/energy overhead on a coarse-grained dynamically reconfigurable processor array (DRPA). As a case study, the proposed methods are applied to some real applica-tions on a DRPA architecture MuCCRA-1. As a result, we confirmed that the proposed overwrite configuration tech-nique for DRPAs reduced an application configuration cy-cles 66.5 % at maximum compared to one without multicast and 20.2 % compared to one without the overwrite configu-ration. It also decreased the configuration energy consump-tion 18.7 % at maximum beyond the overhead of memory overwrites. 1