Computer A: cycle time = 100ps, CPI = 2.0 Computer B: cycle time = 150ps, CPI...
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Computer A: cycle time = 100ps, CPI = 2.0
Computer B: cycle time = 150ps, CPI...
Suppose a computer M3 has an average CPI of 2.7 and a clock rate of 3.7...
Suppose a computer M3 has an average CPI of 2.7 and a clock rate of 3.7 GHz. Please answer the following: (a) Calculate the runtime for a program P with 22,933 instructions, which uses an accelerating co-processor 45 percent of the time, and (b) determine how much faster (or slower) the accelerator needs to run for P to run 1.5 times as fast on M3 with the faster (resp. slower) accelerator.
Suppose a computer M3 has an average CPI of 2.7 and a clock rate of 3.7...
Suppose a computer M3 has an average CPI of 2.7 and a clock rate of 3.7 GHz. Please answer the following: (a) Calculate the runtime for a program P with 22,933 instructions, which uses an accelerating co-processor 45 percent of the time. (b) determine how much faster (or slower) the accelerator needs to run for P to run 1.5 times (1.5X) as fast on M3 with the faster (resp. slower) accelerator. Hint: First set up your equation for Amdahl’s Law,...
Make sure to show how you solved the problem step-by-step: Consider three different processors P1, P2,...
Make sure to show how you solved the problem step-by-step: Consider three different processors P1, P2, and P3, executing the same instruction set. P1 has a clock cycle time of 300 picosecond and a CPI (clock cycles per instruction) of 1.5. P2 has a clock cycle time of 400 picosecond and a CPI of 1.0. P3 has a clock cycle time of 250 picosecond and a CPI of 2.0. P1 is running a program with 10 instructions. P2 is running...
For a given number of instructions, assume CPI is increased by 20%, and clock cycle time...
For a given number of instructions, assume CPI is increased by 20%, and clock cycle time is decreased by 10%. The program execution time ___________. a. remains the same b. increases c. decreases
If a processor has a (total) CPI of 1.2, and a cycle time of 3.7 nanoseconds,...
If a processor has a (total) CPI of 1.2, and a cycle time of 3.7 nanoseconds, what is the average execution time per instruction in nanoseconds (to TWO decimal places)?
Consider the following problem: You are the chief designer for the next generation smart gadget. In...
Consider the following problem: You are the chief designer for the next generation smart gadget. In order to work optimally, you need the fastest processor possible. Processor A has a clock rate of 2GHz and an average CPI of 2.0 Processor B has a clock rate of 8GHz, but the average CPI is 7. What is the cycle time of Processor A? Assume a program has 100 instructions, what is the CPU time for Processor A? What is the cycle...
A computer has a bus with a 8 nsec cycle time, during which it can read...
A computer has a bus with a 8 nsec cycle time, during which it can read or write a 64-bit word from memory. The computer has a disk that uses the bus and transfers 160 Mbytes/sec. The CPU normally fetches and executes one 64-bit instruction every 1 nsec. How much does the disk slow down the CPU?
Computer A executes the MIPS ISA and computer B executes the x86 ISA. On average, programs...
Computer A executes the MIPS ISA and computer B executes the x86 ISA. On average, programs execute 1.5 times as many MIPS instructions as x86 instructions. Computer A has an average CPI of 1.5 and computer B an average CPI of 3. If computer B runs at a 3GHz clock frequency, what speed does computer A have to run at to be at least as fast as computer B?
In this exercise, we examine how pipelining affects the clock cycle time of the processor. Problems in this exercise as...
In this exercise, we examine how pipelining affects the clock cycle time of the processor. Problems in this exercise assume that individual stages of the datapath have the following latencies: IF | ID | EX | MEMIwB 200ps 400ps 150ps 250ps 200ps Also, assume that instructions executed by the processor are broken down as follows: alu beqIwSW 45% 20% 20% 15% 3.1 What is the clock cycle time in a pipelined and non-pipelined processor? 3.2 What is the total latency...
A computer system has the following memory timing clock cycle (CC) specification: Cache access ti...
A computer system has the following memory timing clock cycle (CC) specification: Cache access time 1 CC, Main memory access time 100 CC, and Virtual memory access time 100,000 CC. Find the ratio of Average Memory Access Times (AMAT) of the following two programs and determine which program executes faster: B5. cache miss rate : 25% Main memory miss rate Program B: Cache miss rate 20% Main memory miss rates 10% 5%
A computer system has the following memory timing...
Consider the following problem: You are the chief designer for the next generation smart gadget. In order to work optimally, you need the fastest processor possible. Processor A has a clock rate of 2GHz and an average CPI of 2.0 Processor B has a clock rate of 8GHz, but the average CPI is 7. What is the cycle time of Processor A? Assume a program has 100 instructions, what is the CPU time for Processor A? What is the cycle...
In this exercise, we examine how pipelining affects the clock cycle time of the processor. Problems in this exercise assume that individual stages of the datapath have the following latencies: IF | ID | EX | MEMIwB 200ps 400ps 150ps 250ps 200ps Also, assume that instructions executed by the processor are broken down as follows: alu beqIwSW 45% 20% 20% 15% 3.1 What is the clock cycle time in a pipelined and non-pipelined processor? 3.2 What is the total latency...
A computer system has the following memory timing clock cycle (CC) specification: Cache access time 1 CC, Main memory access time 100 CC, and Virtual memory access time 100,000 CC. Find the ratio of Average Memory Access Times (AMAT) of the following two programs and determine which program executes faster: B5. cache miss rate : 25% Main memory miss rate Program B: Cache miss rate 20% Main memory miss rates 10% 5%
A computer system has the following memory timing...
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