Specify reduction step ordering

[pr0g]

I have some code that is more or less based on the excellent Parallel Sum example.

Is there a way to guarantee the ordering in the reduction step? I have a problem where the order I process the subranges is important and I'm not sure how to do this. I tried adding a std::sort using the range.start value (I stored this in what would be equivalent to the Count struct from the example) but that didn't seem to work. I'd be very grateful if someone could offer some advice on how to achieve this.

Thank you very much for your help and for maintaining this great library!

[pr0g]

It turns out I didn't need this after all. After some further debugging and understanding that ExecuteRange could be called multiple times from the same thread number with different ranges, I was able to get things working. Please feel free to ignore this 🙂