Hi Adrien, I have some confusion about the method collapse8(long[ ] arr) in ForUtil class
On line 85, the loop times are 16, because there are 128 elements in arr, and eight elements were processed at a time. My question is why not choose the elements in order , like in the first loop, arr[0] ~ arr[7] were chosen, in the second loop, arr[8] ~ arr[15] were chosen … Is it cause the compiler cann’t generate SIMD instructions or just something else? Could you help me find the answer here？
