Introduction

Implement Parallel Matrix-Vector Multiplication and Parallel Jacobi's Method

Input & Output Format

The input to the algorithm is two files containing the matrix A and vector b.
The output of the program is the vector x. File format is described in more details below.
The program should take 3 command line arguments: input mat.txt, input vec.txt and output.txt.
Sample command line input:
$ mpiexec -np 4 ./pjacobi input_mat.txt input_vec.txt output.txt

File Format

input_mat.txt: contains n + 1 lines for an n × n matrix A

• First line: value of n
• Following n lines: space-delimited elements of the matrix
  (Datatype - Doubles)

input_vec.txt: contains 1 line for the vector b

• First line: n space-delimited elements of vector b
  (Datatype - Doubles)

output.txt: contains 1 line for the vector x

• First line: n space-delimited elements of vector x
  (Datatype - Doubles, up to 16 decimal points)