Dsps, Gpps, and Multimedia Applications | an Evaluation Using Dspstone

The DSPstone evaluation methodology is applied to evaluate performance of xed{ and oating{point digital signal (DSP), and general purpose (GPP) processors with appropriate C compilers. Main goal was to estimate run{ time e ciency on code which is representative for baseband processing in multimedia applications. The results show that for DSP{type code, like FIR ltering, 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 oating{point DSP and GPP processors introduce signi cant run-time overhead on DSP-type code. This overhead mostly disappears if the programming of xed{ and oating{point DSP processors is done using language extensions.