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Happy Valley

735 bytes added, 13:30, 8 April 2018
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==== Kernel ====
 
'''Source Code'''
 
<pre>
__global__ void bitonic_sort_gpu(int *data, int j, int k) {
 
int i = threadIdx.x + blockDim.x * blockIdx.x;
int ixj = i^j;
int temp;
 
if ((ixj)>i)
{
if ((i&k) == 0 && data[i] > data[ixj]) { /* sort ascending */
temp = data[i];
data[i] = data[ixj];
data[ixj] = temp;
}
 
if ((i&k) != 0 && data[i] < data[ixj]) { /* sort descending */
temp = data[i];
data[i] = data[ixj];
data[ixj] = temp;
}
 
}
}
</pre>
 
'''Launching parameters'''
 
<pre>
int j, k;
for (k = 2; k <= n; k = 2 * k)
{
for (j = k >> 1; j > 0; j = j >> 1)
{
bitonic_sort_gpu <<< (n + ntpb - 1) / ntpb, ntpb >>>(arrGPU_d, j, k);
}
}
</pre>
=== Comparison ===
 
'''Chart Diagram'''
 
[[File:HVBitonicSortCompare.png]]
== Assignment 3 ==
56
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