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The bitonic sorting algorithm is devised for the input length n being a power of 2.

To check the noticeable time gap, we put 2^1516, 2^20, 2^2524.

void bitonicSort(int* array, int N){

==Assignment3==

While working on the project, we discovered that cudaMemcpy(HtoD) and (DtoH) takes long time. so, we decided to use pinned memory instead of pageable memory to improve its performance. "cudaHostAlloc() will allocate pinned memory which is always stored in RAM and can be accessed by GPU's DMA(direct memory access) directly" [[File:Resultone.png|500px|thumb|left|pinned memory vs pageable memory]]

~~Use pinned memory instead of pageable memory cudaHostAlloc();~~

~~"It will allocate pinned memory which is always stored in RAM and can be accessed by GPU's DMA(direct memory access) directly"~~

~~[[File:Resultone.png|500px|thumb|left|~~ using pinned memory vs is 2 times faster than pageable memory]]

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