cuda 编 程（10） cuda 并行加速时间对比

代码在git

nvcc add1cpu.cu -o add1cpu
./add1cpu

Time = 352.801 ms.
Time = 222.614 ms.
Time = 223.758 ms.
Time = 224.543 ms.
Time = 223.666 ms.
Time = 222.695 ms.
Time = 223.809 ms.
Time = 222.556 ms.
Time = 222.363 ms.
Time = 221.945 ms.
Time = 222.848 ms.
Time = 223.08 +- 0.768013 ms.
No errors

nvcc add2gpu.cu -o add2gpu
./add2gpu 

Time = 2.19098 ms.
Time = 2.19251 ms.
Time = 2.1903 ms.
Time = 2.19136 ms.
Time = 2.1937 ms.
Time = 2.19117 ms.
Time = 2.19638 ms.
Time = 2.19837 ms.
Time = 2.19341 ms.
Time = 2.19328 ms.
Time = 2.18941 ms.
Time = 2.19299 +- 0.00276214 ms.
No errors

cuda并行加速后，速度比c++ cpu下增大100倍