Consider the following two processors. P1 has a clock rate of 4 GHz, average CPI of 0.9, and requires the execution of 5.0E9 instructions. P2 has a clock rate of 3 GHz, an average CPI of 0.75, and requires the execution of 1.0E9 instructions. Part A: A common fallacy is to use MIPS (millions of instructions per second) to compare the performance of two different processors and consider that the processor with the largest MIPS has the largest performance. Check if this is true for P1 and P2. Part B: Another common performance figure is MFLOPS (millions of floating- point operations per second), defined as: MFLOPS = No. FP operations/(execution time × 1E6) Assume that 40% of the instructions executed on both P1 and P2 are floating-point instructions. Find the MFLOPS fiqures for the processors.

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Consider the following two processors. P1 has a clock rate of 4 GHz, average CPI of
0.9, and requires the execution of 5.0E9 instructions. P2 has a clock rate of 3 GHz, an
average CPI of 0.75, and requires the execution of 1.0E9 instructions.
Part A: A common fallacy is to use MIPS (millions of instructions per second) to
compare the performance of two different processors and consider that the
processor with the largest MIPS has the largest performance. Check if this
is true for P1 and P2.
Part B: Another common performance figure is MFLOPS (millions of floating-
point operations per second), defined as:
MFLOPS = No. FP operations/ (execution time × 1E6)
Assume that 40% of the instructions executed on both P1 and P2 are
floating-point instructions.
Find the MFLOPS figures for the processors.
Transcribed Image Text:Consider the following two processors. P1 has a clock rate of 4 GHz, average CPI of 0.9, and requires the execution of 5.0E9 instructions. P2 has a clock rate of 3 GHz, an average CPI of 0.75, and requires the execution of 1.0E9 instructions. Part A: A common fallacy is to use MIPS (millions of instructions per second) to compare the performance of two different processors and consider that the processor with the largest MIPS has the largest performance. Check if this is true for P1 and P2. Part B: Another common performance figure is MFLOPS (millions of floating- point operations per second), defined as: MFLOPS = No. FP operations/ (execution time × 1E6) Assume that 40% of the instructions executed on both P1 and P2 are floating-point instructions. Find the MFLOPS figures for the processors.
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