QUESTION 19
A machine cycle refers to
A. |
Fetching an instruction |
|
B. |
Clock speed |
|
C. |
Fetching, decoding and executing an instruction |
|
D. |
Executing and instruction |
|
E. |
Decoding an instruction |
A machine cycle refers to Fetching, decoding and executing an instruction
Fetching, decoding and executing an instruction |
QUESTION 19 A machine cycle refers to A. Fetching an instruction B. Clock speed C. Fetching,...
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: [17pts] 3. IF ID EEX MEM | WB 250ps 350ps 150ps300ps200ps a. what is the clock cycle time in a pipelined and non-pipelined (ie, single cycle) processor? what is the total latency of one lw instruction in a pipelined and non-pipelined (i.e., single cycle) processor? b. What is the total...
A processor is designed such that the clock of the processor runs at 1 GHz. The following table gives the instruction frequencies for the benchmark and how many cycles each instruction takes. Instruction Type Frequency Cycles Load & Stores 25% 10 cycles Arithmetic Instructions 65% 6 cycles Branch instructions 10% 4 cycles (a) Calculate the CPI for the above benchmark. (b) Suppose the amount of registers are doubled, such that clock cycle time increases by 40%. What is the new...
400 MHz CPU with 5 stage execution, 1 clock Instruction fetch 1 clock Decode 0 clock data fetch 8 clock execution 0 clock write back. A. How many clocks to complete 1 instruction? B. How many instructions are completed in a second if not pipelined? C. How many instructions are completed in a second if pipelined? D. How many instructions are completed in a second if pipelined and execution stage superscalar?
A non-pipelined processor has a clock rate of 1 GHz and an average instruction takes 9 cycles to execute. The manufacturer has decided to design a pipelined version of this processor. For this purpose, the instruction cycle has been divided into five stages with the following latencies: Stage 1 – 2.0 ns,Stage 2 – 1.5 ns, Stage 3 – 1.0 ns, Stage 4 – 2.6 ns, Stage 5 – 1.9 ns. Each stage will require an extra 0.4 ns for...
Base machine has a 2.4GHz clock rate. There is L1 and L2 cache. L1 cache is 256K, direct mapped write through. 90% (read) hit rate without penalty, miss penalty is 4 cycles. (cost of reading L2) All writes take 1 cycle. L2 cache is 2MB, 4 way set associative write back. 95% hit rate, 60 cycle miss penalty (cost of reading memory). 30% of all instructions are reads, 10% writes. All instructions take 1 cycle - except reads which take...
Given 3 different instruction types, A, B and C. Each type-A, B and C instruction takes 30ns, 20ns and 50ns to complete, respectively. An assembly program is written with 20 type-A, 30 type-B and 40 type-C instructions. Assume a single-issue not pipelined processor, how much time (in nano-seconds) is required to complete the execution of this program? Now let us pipeline these instructions based on a cycle time of 10ns. To pipeline these instructions equally and ideally using this cycle...
Liminal stage in a life cycle ritual refers to _____________ A Experiential authenticity B A state of being on the threshold of ordinary social position C Re-integration D Re-birth E Up-casting
Question 1: Consider two different implementations, M1 and M2, of the same instruction set. There are four classes of instructions (A, B, C, and D) in the instruction set. M1 has a clock rate of 500 MHz while M2’s clock rate is 750 MHz. The average number of cycles for each instruction class of M1 and M2 are shown in the following table: Class CPI for this class on M1 CPI for this class on M2 A 1 2 B...
QUESTION 19 A class B amplifier conducts for O a. 90° of input cycle O b. 180° of input cycle O c. 270° of input cycle O d. 360° of input cycle QUESTION 20 The maximum efficiency of a class A power amplifier is O a. 50 % b. 25 % OC. 75 % d. 95 %
Q.4 [10 points] A processor is designed such that the clock of the processor runs at 2.0 GHz. The following table gives the instruction frequencies for the benchmark and how many cycles each instruction takes. Instruction Type Frequency Cycles Load & Stores 25% 8 cycles Arithmetic Instructions 60% 6 cycles Branch instructions 15% 4 cycles (a) (2 points) Calculate the CPI for the above benchmark. (b) (4 points) Suppose the amount of registers are doubled, such that clock cycle time...