shahsaurabh1990

01-25-2013, 05:15 AM

I am writing an OpenCL code which parallelizes finding the minimum number in an array.

Here is my kernel function:

What i am doing is comparing all the elements with all the other elements and the element which is greater i am changing the corresponding value of M[i] to 1. At last we have only one element in M array with value 0, with that index we can look in the A array and have our minimum value

__kernel void array(__global int *A, __global int *M) {

// Get index of the element

int i = get_global_id(0);

int j = get_global_id(1);

//barrier(CLK_LOCAL_MEM_FENCE);

// Do the operation

if(A[i]<A[j] && i!=j)

{M[j]=1;}

}

I am getting all the values M array as 0.

But the output should be that only one value of the M array should be 0. and that index would give me the min number index in array A.

Here is my kernel function:

What i am doing is comparing all the elements with all the other elements and the element which is greater i am changing the corresponding value of M[i] to 1. At last we have only one element in M array with value 0, with that index we can look in the A array and have our minimum value

__kernel void array(__global int *A, __global int *M) {

// Get index of the element

int i = get_global_id(0);

int j = get_global_id(1);

//barrier(CLK_LOCAL_MEM_FENCE);

// Do the operation

if(A[i]<A[j] && i!=j)

{M[j]=1;}

}

I am getting all the values M array as 0.

But the output should be that only one value of the M array should be 0. and that index would give me the min number index in array A.