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DAC
2004
ACM

Off-chip latency-driven dynamic voltage and frequency scaling for an MPEG decoding

10 years 6 days ago
Off-chip latency-driven dynamic voltage and frequency scaling for an MPEG decoding
This paper describes a dynamic voltage and frequency scaling (DVFS) technique for MPEG decoding to reduce the energy consumption using the computational workload decomposition. This technique decomposes the workload for decoding a frame into onchip and off-chip workloads. The execution time required for the onchip workload is CPU frequency-dependent, whereas the off-chip workload execution time does not change, regardless of the CPU frequency, resulting in the maximum energy savings by setting the minimum frequency during off-chip workload execution time, without causing any delay penalty. This workload decomposition is performed using a performance-monitoring unit (PMU) in the XScale-processor, which provides various statistics such as cache hit/miss and CPU stall, due to data dependency at run time. The onchip workload for an incoming frame is predicted using a framebased history so that the processor voltage and frequency can be scaled to provide the exact amount of computing power...
Kihwan Choi, Ramakrishna Soma, Massoud Pedram
Added 13 Nov 2009
Updated 13 Nov 2009
Type Conference
Year 2004
Where DAC
Authors Kihwan Choi, Ramakrishna Soma, Massoud Pedram
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