Homework Answers
Tiling is used to allows loop transformation and data to be accessed in tiles.It focused on different levels of memory and can have maximum reuse of data.
1. Maximum size =10
2. Tiling used to improve performance by looping. elements are accessing on same cache and block size=4.
4^1
4^2
...........4^10
The performance increased by power of the size.
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Le size 4) to improve the performance of the Q3: Use tling (til following code. If N-20 and the c...
4B, 20%) compare performance of a Processor with cache vs. without cache. Assume an Ideal processor with 1 cycle memory access, CPI1 Assume main memory access time of 8 cycles Assume 40% instruct...
4B, 20%) compare performance of a Processor with cache vs. without cache. Assume an Ideal processor with 1 cycle memory access, CPI1 Assume main memory access time of 8 cycles Assume 40% instructions require memory data access Assume cache access time of I cycle Assume hit rate 0.90 for instructiens, 0.80 for data Assume miss penalty (time to read memory inte cache and from cache to Processor with cache processor) is 10 cycles >Compare execution times of 100-thousand instructions:
4B,...
4.9 [10/20/20/15/15] Consider the following code, which multiplies two vec- tors that contain sin...
4.9 [10/20/20/15/15]<4.2> Consider the following code, which multiplies two vec- tors that contain single-precision complex values: for (i-0:i <300:i++) Assume that the processor runs at 700 MHz and has a maximum vector length of 64. The load/store unit has a start-up overhead of 15 cycles; the multiply unit, 8 cycles; and the add/subtract unit, 5 cycles. a. [101 <4.3> What is the arithmetic intensity of this kemel? Justify your answer. b. [20] <4.2> Convert this loop into RV64V assembly code...
1. (10 points) Suppose you have a load-store computer with the following instruction mix Operation Frequency...
1. (10 points) Suppose you have a load-store computer with the following instruction mix Operation Frequency Number of clock cycles ALU ops Loads Stores Branches 40 % 20 % 18% 22 % 4 4 The ALU ops (arithmetic logic unit ops) typically use operands in CPU registers and hence they take fewer clock cycles to execute. However, if you want to add a memory operand to a CPU register, then you would have to explicitly load it into a CPU...
a) Use the following R code to empirically check the Central Limit Theorem via simulation .n...
a) Use the following R code to empirically check the Central Limit Theorem via simulation .n <- 40 # sample size m <- c(1:200) #create a vector of length 200 for (i in 1:200) { #simulate 200 samples x <- rnorm(n) m[i] <- mean(x) } hist(m) b) Repeat part (a) with n=200 and compare the histograms. Describe what you observe and what you expect when n increases. c) Repeat parts (a) and (b) with runif() and rexp() respectively instead of...
Vocabulary Exercises is the communication channel that connects all computer system components Cache types that are...
Vocabulary Exercises is the communication channel that connects all computer system components Cache types that are generally implemented on the same chip as the CPU include 3. thus controlling access to the bus by all other The CPU is always capable of being a(a) devices in the computer system. 4. An) is a reserved area of memory used to resolve differences in data transfer rate or data transfer unit size. 5. A(n) is an area of fast memory where data...
The following C++ code has a problem where the loop can exceed the size of the...
The following C++ code has a problem where the loop can exceed the size of the array if the user inputs too many numbers. #include <iostream> using namespace std; int main() { int nums[20] = { 0 }; int a[10] = { 0 }; cout << a << endl; cout << nums << endl; cout << "How many numbers? (max of 10)" << endl; cin >> nums[0]; for (int i = 0; i < nums[0]; i++) { cout << "Enter...
C PROGRAM The following is code prints the current activation record number, the memory address of...
C PROGRAM The following is code prints the current activation record number, the memory address of the current array, followed by the estimated size of the current activation record as a distance between the current array address and the array address from the previous activation record. I need it to run until a segmentation fault occurs and also it must print the estimated size of the runtime stack as a product of the size of current activation record and the...
The following C code keeps returning a segmentation fault! Please debug so that it compiles. Also...
The following C code keeps returning a segmentation fault! Please debug so that it compiles. Also please explain why the seg fault is happening. Thank you #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> // @Name loadMusicFile // @Brief Load the music database // 'size' is the size of the database. char** loadMusicFile(const char* fileName, int size){ FILE *myFile = fopen(fileName,"r"); // Allocate memory for each character-string pointer char** database = malloc(sizeof(char*)*size); unsigned int song=0; for(song =0; song < size;...
basic c++ 2. AC++ program contains the following C++ code (assume an int occupies 2 bytes...
basic c++
2. AC++ program contains the following C++ code (assume an int occupies 2 bytes each in memory): int x[ ] = { 10, 20, 30, 40, 50, 60, 70, 80); int *ptrx ptrx = x; Array x starts at memory location 2140. a. What is the value assigned to ptrx? b. What is the value of (x+2)? c. What is the value of *x? d. What is the value of (*x+2)? e. What is the value of *(x+2)?...
How to use C to output this: indigo1 376 % lab9 Capacity = 4 Capacity =...
How to use C to output this:
indigo1 376 % lab9
Capacity = 4
Capacity = 8
0 5 10 15 20
Capacity = 16
0 5 10 15 20 25 30 35 40
Capacity = 32
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105
110 115 120 125...
4B, 20%) compare performance of a Processor with cache vs. without cache. Assume an Ideal processor with 1 cycle memory access, CPI1 Assume main memory access time of 8 cycles Assume 40% instructions require memory data access Assume cache access time of I cycle Assume hit rate 0.90 for instructiens, 0.80 for data Assume miss penalty (time to read memory inte cache and from cache to Processor with cache processor) is 10 cycles >Compare execution times of 100-thousand instructions:
4B,...
4.9 [10/20/20/15/15]<4.2> Consider the following code, which multiplies two vec- tors that contain single-precision complex values: for (i-0:i <300:i++) Assume that the processor runs at 700 MHz and has a maximum vector length of 64. The load/store unit has a start-up overhead of 15 cycles; the multiply unit, 8 cycles; and the add/subtract unit, 5 cycles. a. [101 <4.3> What is the arithmetic intensity of this kemel? Justify your answer. b. [20] <4.2> Convert this loop into RV64V assembly code...
1. (10 points) Suppose you have a load-store computer with the following instruction mix Operation Frequency Number of clock cycles ALU ops Loads Stores Branches 40 % 20 % 18% 22 % 4 4 The ALU ops (arithmetic logic unit ops) typically use operands in CPU registers and hence they take fewer clock cycles to execute. However, if you want to add a memory operand to a CPU register, then you would have to explicitly load it into a CPU...
Vocabulary Exercises is the communication channel that connects all computer system components Cache types that are generally implemented on the same chip as the CPU include 3. thus controlling access to the bus by all other The CPU is always capable of being a(a) devices in the computer system. 4. An) is a reserved area of memory used to resolve differences in data transfer rate or data transfer unit size. 5. A(n) is an area of fast memory where data...
basic c++
2. AC++ program contains the following C++ code (assume an int occupies 2 bytes each in memory): int x[ ] = { 10, 20, 30, 40, 50, 60, 70, 80); int *ptrx ptrx = x; Array x starts at memory location 2140. a. What is the value assigned to ptrx? b. What is the value of (x+2)? c. What is the value of *x? d. What is the value of (*x+2)? e. What is the value of *(x+2)?...
How to use C to output this:
indigo1 376 % lab9
Capacity = 4
Capacity = 8
0 5 10 15 20
Capacity = 16
0 5 10 15 20 25 30 35 40
Capacity = 32
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105
110 115 120 125...
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