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DSPs, GPPs, and multimedia applications: An evaluation using DSPstone

Authors:: Zivojnovic, V. , Schraut, H. , Willems, M. , Schoenen, R.
Book Title:: Proc. Int. Conf. on Signal Processing Application and Technology (ICSPAT)
Address:: Boston
Date:: Oct. 1995
Language:: English
Abstract:: The DSPstone evaluation methodology is applied to evaluate performance of fixed-- and floating--point digital signal (DSP), and general purpose (GPP) processors with appropriate C compilers. Main goal was to estimate run--time efficiency on code which is representative for baseband processing in multimedia applications. The results show that for DSP--type code, like FIR filtering, DSP processors are superior compared to GPP processors, both in processor and C compiler performance. Also, it is shown that contrary to an established opinion, C compilers for floating--point DSP and GPP processors introduce significant run-time overhead on DSP-type code. This overhead mostly disappears if the programming of fixed-- and floating--point DSP processors is done using language extensions.
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