1) Assume to include in a processor a new fast floating-point unit that speeds up floating-point...
1) Assume to include in a processor a new fast floating-point unit that speeds up floating-point operations by an average factor 2×. In addition, assume that floating-point operations take 20% of the original program execution. What is the overall speedup?
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1) Assume to include in a processor a new fast floating-point
unit that speeds up floating-point...
.13 : Assume that we make an enhancement to a computer that improves some mode of...
.13 : Assume that we make an enhancement to a computer that improves some mode of execution by a factor of 10. Enhanced mode is used 50% of the time, measured as a percentage of the execution time when the enhanced mode is in use. Recall that Amdahl’s law depends on the fraction of the original, unenhanced execution time that could make use of enhanced mode. Thus, we cannot directly use this 50% measurement to compute speedup with Amdahl’s law....
Assume that speeding up the floating-point operations causes a slow down in the data cache accesses....
Assume that speeding up the floating-point operations causes a slow down in the data cache accesses. For example, given the additional space taken by the more sophisticated floating-point unit, memory operations take some extra cycles to get to the cache. Specifically, assume that data cache accesses, which consume 10% of the original program execution time, are now slowed down by a factor 1.5×. What is the overall speedup? [
4. (10 pt) A processor Assuming that the integer instructions requires 80% of the original execution...
4. (10 pt) A processor Assuming that the integer instructions requires 80% of the original execution time, and the floating point instructions requires 20%. How much faster should the integer instructions run for overall speedup of 2? (What is the improvement factor for a speedup of 2?) program consisting of integer instructions and floating-point instructions. runs a Improvement Factor
Memory operations currently take 30% of execution time. A new widget called a cache speeds up...
Memory operations currently take 30% of execution time. A new widget called a cache speeds up 80% memory operations by a factor of 4. A second new widget called an L2 cache speeds up 1/2 of the remaining 20% by a factor of 2. What is the total speed up?
2. Given Amdal's Law as shown below (1-2) Form A: T(0,N) 1 Form B:S(s) = (1-p)+...
2. Given Amdal's Law as shown below (1-2) Form A: T(0,N) 1 Form B:S(s) = (1-p)+ The 60% of program could be parallellized. Using latest compiler, the serial part of N 1) the program double its performance. If the program running on a 5 processor machine, calculate its whole speedup ? (4 marks) 2) What is the overall speedup if we make 90 % of a program run 10 times faster? (4 marks) V Four parts of a program need...
Assume for arithmetic, load/store, and branch instructions, a processor has CPls of 3, 15, and 7, respectively. Also as...
Assume for arithmetic, load/store, and branch instructions, a processor has CPls of 3, 15, and 7, respectively. Also assume that on a single processor a program requires the execution of 3.12E9 arithmetic instructions, 1.75E9 load/store instructions, and 512Million branch instructions. Assume that each processor has a 2.5GHz clock frequency. Assume that, as the program is parallelized to run over multiple cores, the number of arithmetic and load/store instructions per processor divided by 0.8xp ( where p is the number of...
Assume that for a program, compiler A results in a dynamic instruction count of 8.0E8 and...
Assume that for a program, compiler A results in a dynamic instruction count of 8.0E8 and has an execution time of 2.4 s, while compiler B results in a dynamic instruction count of 1.25E9 and an execution time of 1.8 s. a. [10] Find the average CPI for each program given that the processor has a clock cycle time of 2 ns. b. [10] Assume the compiled programs run on two different processors. If the execution times on the two...
1a. convert the following decimal number to 32 bit single precision Floating point binary number and...
1a. convert the following decimal number to 32 bit single precision Floating point binary number and convert that binary number to hexadecimal NUMBER = -134.5 in decimal b. convert the following 32-bit single precision floating point number to decimal: 01000111111100000000000000000000 2. Using Booth's algorithm, multiply the decimal numbers -12 and +13. 3. you have two improvement alternatives, which is better and why? The first one improves 15% of the instructions, and it improves that speed by a factor of 6....
In this exercise, assume that we are considering enhancing a quad-core machine by adding encryption hardware...
In this exercise, assume that we are considering enhancing a quad-core machine by adding encryption hardware to it. When computing encryption operations, it is 20 times faster than the normal mode of execution. We will define the percentage of encryption as the percentage of time in the original execution that is spent performing encryption operations. The specialized hardware increases power consumption by 2%. A: Draw a graph that plots the speedup as a percentage of the computation spent performing encryption....
Compller A Compler B Execution Ti Execution Time No. Instructions meNo. Instructions b. 1.9 s 1.60E+09 1.30E+09 2.1 s 1...
Compller A Compler B Execution Ti Execution Time No. Instructions meNo. Instructions b. 1.9 s 1.60E+09 1.30E+09 2.1 s 1.71 [5] <1.4> For the same program, two different compilers are used. The table above shows the execution time of the two different compiled programs. Find the average CPI for each program given that the processor has a clock cycle time of 1 ns. 1.7.2 [5] <1.4> Assume the compiled programs run on two different processors If the execution times on...
4. (10 pt) A processor Assuming that the integer instructions requires 80% of the original execution time, and the floating point instructions requires 20%. How much faster should the integer instructions run for overall speedup of 2? (What is the improvement factor for a speedup of 2?) program consisting of integer instructions and floating-point instructions. runs a Improvement Factor
2. Given Amdal's Law as shown below (1-2) Form A: T(0,N) 1 Form B:S(s) = (1-p)+ The 60% of program could be parallellized. Using latest compiler, the serial part of N 1) the program double its performance. If the program running on a 5 processor machine, calculate its whole speedup ? (4 marks) 2) What is the overall speedup if we make 90 % of a program run 10 times faster? (4 marks) V Four parts of a program need...
Assume for arithmetic, load/store, and branch instructions, a processor has CPls of 3, 15, and 7, respectively. Also assume that on a single processor a program requires the execution of 3.12E9 arithmetic instructions, 1.75E9 load/store instructions, and 512Million branch instructions. Assume that each processor has a 2.5GHz clock frequency. Assume that, as the program is parallelized to run over multiple cores, the number of arithmetic and load/store instructions per processor divided by 0.8xp ( where p is the number of...
Compller A Compler B Execution Ti Execution Time No. Instructions meNo. Instructions b. 1.9 s 1.60E+09 1.30E+09 2.1 s 1.71 [5] <1.4> For the same program, two different compilers are used. The table above shows the execution time of the two different compiled programs. Find the average CPI for each program given that the processor has a clock cycle time of 1 ns. 1.7.2 [5] <1.4> Assume the compiled programs run on two different processors If the execution times on...
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