Homewor5 Comments
April 20, 2014
Problem 1 (30 points)
/ Generate row comm & col comm , g e t row rank & c o l r a n k .
int c o l o r ;
c o l o r=rank / nproc row ;
MPI Comm split (MPI COMM WORLD, c
Homework1
March 3, 2014
Problem 1
The trivial implementation suggested in the question is as follows:
double local_sum[MAX_NUM_THREADS];
/Initialize local_sum[i]=0;
#pragma omp parallel for shared (h,
CS 525 Parallel Computing
Spring 2014
Homework 3
Given: Feb. 13, 2014; Due: Feb. 27, 2014 11:50 A.M.
(Before class begins)
I would like you to work on Homework problems on your own without help from o
Homework2
March 3, 2014
Problem 1&2
A sample code is as below:
double* pageRank(int n, double *matrix, int* mindex, int *cindex)cfw_
double *vold;
double *vnew;
double *vtmp;
double tol=0.00001;
int s
Homework4 Solution
March 24, 2014
Problem 1&2
Ping-Pong Test
int i;
MPI_Status status;
if (myid=0)cfw_
for(i=0;i<ROUNDS;i+)cfw_
MPI_Send(buf,size,MPI_DOUBLE,1,99,MPI_COMM_WORLD);
MPI_Recv(buf2,size,MP
CS 525 Parallel Computing
Spring 2014
Homework 4
Given: Feb. 27, 2014; Due: March 13, 2014 11:50 A.M.
(Before class begins)
I would like you to work on Homework problems on your own without help from
Homewor5 Comments
April 28, 2014
Problem 1 (30 points)
int s o r t ( int data , int np , int rank , int nproc ) cfw_
int i ;
/ Quick /Merge S o r t L o c a l l y
l o c a l M e r g e S o r t ( data , n
CS 525 Parallel Computing
Spring 2014
Homework 2
Given: Jan. 30, 2014; Due: Feb. 12, 2014 11:50 A.M.
(Before class begins)
I would like you to work on Homework problems on your own without help from o
CS 525 Parallel Computing
Spring 2014
Homework 5
Given: March 29, 2014; Due: April 10, 2014 11:50 A.M.
(Before class begins)
I would like you to work on Homework problems on your own without help from
Homework3 Comments
March 13, 2014
Problem 1
A sample code is as below:
double* cg(int n, double *value, int* colind, int* rbegin, double *b, int rank, int nproc)cfw_
int np=n/nproc;
int i,j,k,l;
int c
PA G E R A N K
David F. Gleich
February 19, 2013
There are quite a few ways of deriving the PageRank equation. Kleinberg and Tardos
describes what I call the two fixes approach. I prefer the random su
Notes on HW 5: Foxs Algorithm for Matrix Multiplication
March 28, 2014
Foxs Algorithm
Foxs algorithm computes the product of two matrices, C = A B.
Lets assume that the three matrices are square of or
Parallel Coloring Algorithms
on Distributed-Memory Pla8orms
Assefaw Gebremedhin
CS525, Spring 2014
Feb 20, 2014
In Last Lecture:
Introduced graph coloring
Saw examples
Problem 1:
1 point for correct judgement. 1 point for the reason. Any reasonable explain would get the point.
(1) True. If this variable (loop index) would otherwise be shared, it is implicitly made p
Sorting Algorithms
Ananth Grama, Anshul Gupta, George Karypis, and Vipin Kumar
To accompany the text `Introduction to Parallel Computing',
Addison Wesley, 2003.
Topic Overview
Issues in Sorting on Pa
CS 525 Parallel Computing
Spring 2014
Homework 1
Given: Jan. 21, 2014; Due: Jan. 30, 2014 11:50 A.M.
(Before class begins)
I would like you to work on Homework problems on your own without help from o
CS 525 Parallel Computing
Problem Set 7 Spring 2014
Given: April 29, 2014; NOT DUE!
This Problem Set covers mostly material that was taught since HW 6 was given, and it overlaps
a bit with material fr
Parallel Coloring Algorithms
on Shared-Memory Pla6orms
Assefaw Gebremedhin
CS525, Spring 2014
Feb 18 2014
Graph coloring
A vertex coloring of a graph G=(V,E) is a mappi