TY - GEN
T1 - Exploring the optimal size for multicasting configuration data of dynamically Reconfigurable processors
AU - Nakamura, T.
AU - Sano, T.
AU - Hasegawa, Y.
AU - Tsutsumi, S.
AU - Tunbunheng, V.
AU - Amano, H.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - The configuration data transfer time of a dynamically re-configurable processor often bottlenecks the hardware context switching time and degrades its computation performance. In order to reduce data transferring time from a central memory to hardware context memory modules in all Processing Elements (PEs) and Switching Elements (SEs), a multicasting mechanism called RoMultiC (Row-Muticast Configuration) was proposed. However, the original RoMultiC used the whole PE or SE as a unit of multicast, the reduction of transfers is limited. Here, the trade-off between the granularity of multicast and hardware increase are evaluated, and the best way to make the multicast bit-map is explored. Evaluation results show that time for transfer is reduced up to 42% compared with the original RoMultiC with only 2% hardware overhead.
AB - The configuration data transfer time of a dynamically re-configurable processor often bottlenecks the hardware context switching time and degrades its computation performance. In order to reduce data transferring time from a central memory to hardware context memory modules in all Processing Elements (PEs) and Switching Elements (SEs), a multicasting mechanism called RoMultiC (Row-Muticast Configuration) was proposed. However, the original RoMultiC used the whole PE or SE as a unit of multicast, the reduction of transfers is limited. Here, the trade-off between the granularity of multicast and hardware increase are evaluated, and the best way to make the multicast bit-map is explored. Evaluation results show that time for transfer is reduced up to 42% compared with the original RoMultiC with only 2% hardware overhead.
UR - http://www.scopus.com/inward/record.url?scp=63049089788&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63049089788&partnerID=8YFLogxK
U2 - 10.1109/FPT.2008.4762376
DO - 10.1109/FPT.2008.4762376
M3 - Conference contribution
AN - SCOPUS:63049089788
SN - 9781424427963
T3 - Proceedings of the 2008 International Conference on Field-Programmable Technology, ICFPT 2008
SP - 137
EP - 144
BT - Proceedings of the 2008 International Conference on Field-Programmable Technology, ICFPT 2008
T2 - 2008 International Conference on Field-Programmable Technology, ICFPT 2008
Y2 - 7 December 2008 through 10 December 2008
ER -