Title :
Performance of a multicomputer type DSP system ´NOVI´ for motion picture coding
Author :
Ohta, N. ; Fujii, T. ; Kanayama, Y. ; Ono, S.
Author_Institution :
Transmission Syst. Lab., NTT, Kanagawa, Japan
Abstract :
The architecture and performance of a multicomputer-type digital signal-processing (DSP) system are discussed. The NOVI system has been created to examine methods for organizing parallel DSP systems and developing parallel programs for a wide range of DSP applications. NOVI presently consists of 36 processing nodes, in each of which an INMOS Transputer is used as a CPU. Its parallel program debugging assistant system facilitates powerful debugging functions to observe all program states. A load-balancing technique using interframe prediction and layered large-grain data flow is proposed to achieve higher performance for data-dependent algorithms such as motion-picture coding. The expected performance of the NOVI system with the proposed technique is also discussed.<>
Keywords :
computerised picture processing; encoding; multiprocessing systems; program debugging; special purpose computers; INMOS Transputer; NOVI system; data-dependent algorithms; debugging functions; interframe prediction; layered large-grain data flow; load-balancing technique; motion picture coding; multicomputer type DSP system; parallel DSP systems; parallel architecture; parallel program debugging; parallel programs; performance; Computer architecture; Debugging; Digital signal processing; Hardware; Motion pictures; Organizing; Parallel processing; Personal digital assistants; Processor scheduling; Signal processing algorithms;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15405
