University of Southern CaliforniaViterbi School of EngineeringEE357Basic Organization of Computer SystemsPerformance ModelinPerformance ModelingReferences: 1)Textbook2)Mk R d k’lidiShahin Nazarian Fall 2009Mark Redekopp’s slide series
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An Opening Question•An Intel and a Sun/SPARC computer measure their respective rates of instruction execution on the same application written in C •Computer A achieves 160 MIPS (Millions of Instructions Per Second)•Computer B achieves 200 MIPS•Which computer executes the program faster? •It depends on the instruction set and compiler (ultimately, the instruction count). Computer B and its mpilm m n mimpl(f t ) compiler may use many more simpler (faster) instructions to implement the program thereby increasing its instruction execution rate but saying nothing of overall execution time Shahin Nazarian/EE357/Fall 20092