Title :
Enhancing multimedia processing by wave-pipelining integer units and floating point units in whole
Author :
Fukase, Masa-aki ; Noda, Kazunori ; Yokoyama, Atsuko ; Sato, Tomoaki
Author_Institution :
Grad. Sch. of Sci. & Technol., Hirosaki Univ., Hirosaki
Abstract :
A ubiquitous processor, HCgorilla followed Java CPU for multimedia processing and was built in RNG (random number generators) for cipher processing. Then, HCgorilla had an execution stage composed of several units for those sophisticated processing. Since the execution stage kept physical separation, each function took different latency. This required instruction scheduling similarly to regular super scalar processors. We describe, in this paper, the improvement of HCgorilla to solve this issue. Specifically, the execution stage composed of arithmetic units is wave-pipelined in whole. This completely merges the parallel structure without physical separation. The waved multifunctional execution unit is effective to realize wide-range dynamic ILP (instruction level parallelism) at a rate higher than regular superscalar processors.
Keywords :
Java; multimedia systems; random number generation; scheduling; ubiquitous computing; HCgorilla; Java CPU; cipher processing; floating point unit; instruction level parallelism; instruction scheduling; multimedia processing; random number generator; sophisticated processing; ubiquitous processor; wave-pipelining integer unit; waved multifunctional execution unit; Arithmetic; Clocks; Delay; Electronic mail; Hardware; Java; Multimedia systems; Pipelines; Processor scheduling; Streaming media; Ubiquitous; execution unit; floating point; processor; wave-pipeline;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on
Conference_Location :
Krabi
Print_ISBN :
978-1-4244-2101-5
Electronic_ISBN :
978-1-4244-2102-2
DOI :
10.1109/ECTICON.2008.4600523
