Users could prepare their own data for benchmark. 1. Please prepare a SPD matrix with double precision floating point data type. 2. Please prepare golden reference vector and result vector which is the product of the matrix and the golden reference. 3. Please make sure the matrix size is NxN and vector size is N 4. Please make sure*N* is multiple of 16. 5. Please store the matrix, golden reference vector and result vector to binary files named A.mat, x.mat and b.mat respectively, and place them into a directory.