Re: [boost] Integer sorting

On Sun, Jan 20, 2019 at 12:22 PM Fenil Mehta via Boost wrote:

Hi,

I am Fenil Mehta, a 3rd year Computer Science and Engineering student.

In response to the past suggestions I have added the comparison graphs of ir_sort::integer_sort for different size of integers and various array lengths with various sorting algorithms of boost to my GitHub[1]. I have also added the explanation of basic working to my GitHub[1]

For arrays of large objects, I have made an improvement which is more efficient as compared to any sorting algorithm I have ever tried (including ska_sort, std::sort, boost::sort::spreadsort::integer_sort, boost::sort::pdqsort, boost::sort::spinsort, boost::sort::flat_stable_sort). It is about two times faster than ska_sort, spreadsort, pdqsort and five times faster than std::sort, spinsort, flat_stable_sort.

From my knowledge and the learning's of past six months by working on this sorting project(ir_sort), I have few more optimizations in mind which would improve the sorting speed even more.

I would like to contribute to this organization in view of GSoC(Google Summer of Code) 2019. It would be great if someone could mentor me regarding the improved sorting algorithm that I have written in C++14.

[1] GitHub link: https://github.com/fenilgmehta/Fastest-Integer-Sort

Regards, Fenil Mehta

On Sat, Dec 29, 2018 at 2:59 PM degski via Boost wrote:

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On Sat, 29 Dec 2018 at 11:16, degski wrote:

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It would be useful to benchmark against ska_sort[1] as well [in addition to the Boost implementation], which I would say is the fastest (radix-)sort around [and simple to use].

Some write-up on "how it works"[2]

degski

Your numbers are impressive, but how can you have a sort algorithm that is O(n) complexity? I know that I could go and analyse your code, but it would be easier if you just explained it. Adrian