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MuCCRA-3 is a low power coarse-grained Dynamically Reconfigurable Processor Array (DRPA) for a flexible off-loading engine in various SoC (System-on-a-Chip). Similar to the other DRPAs, it has an array of processing elements (PEs), a simple coarse-grained processor, consisting of an ALU and a register file, and dynamic reconfiguration of the array enables time-multiplexed execution. DRPAs including...
A kind of image processing with a low power dynamically reconfigurable processor array (DRPA) prototype MuCCRA-3 implemented with 65 nm CMOS process will be shown. The measured power is also exhibited during execution, and compared with Xilinx Virtex-5 FPGA using exactly the same environment. The demonstration shows that more than 10 times better power efficient computation is achieved using MuCCRA-3...
A dynamically reconfigurable processor array (DRPA) is consisting of a number of PEs, and its interconnection of PE array gives a large effect on the total area, energy and performance. However, there is no study of DRPAs focused on their PE network. In this paper, we designed four types of DRPAs based on MuCCRA, developed in MuCCRA(multi-core configurable reconfigurable architecture) project. They...
One of benefit of coarse-grained dynamically reconfigurable processor arrays (DRPAs) is their low dynamic power consumption by operating a number of processing element (PE) in parallel with a low frequency clock. However, in the future advanced process, the leakage power will occupy a considerable part of the total power consumption, and it may degrade the advantage of DRPAs. In order to reduce the...
Based on the power consumption analysis of a real dynamically reconfigurable processor array (DRPA) prototype MuCCRA-3, it appears that the key of power saving is keeping the datapath on the processing element (PE) array as possible. Fine grain partial reconfiguration (FGPR) is a simple technique to minimize the change of configuration code in a hardware context switching. In FGPR, a configuration...
In multi-context dynamically reconfigurable processor array (DRPA), the required number of contexts is often increased by those with low resource usage. In order to execute such contexts without wasting a context memory, we propose a new execution mode called instruction buffer mode in addition to the normal multi-context mode. In this mode, a configuration code from the central configuration memory...
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