I just planning to get a HD7970(6Gb) to use as a GPU acceleration for Pyro, 7970's score of OpenCL looks very nice exclude the “Programming Principles: Bitonic Merge Sort”
http://clbenchmark.com/compare.jsp?config_0=11905561&config_1=14470292 [clbenchmark.com]

what is “Bitonic Merge Sort”? does it important to Pyro??
could give me some info, please. thank you


iGou

A bitonic sort is a parallel sorting algorithm. I don't believe it's used in Pyro, though the viewport uses it in a very limited fashion for Med and High Transparency, for sorting depth samples.

So far as I recall, bitonic sort is usually used for sorting using a hypercube network, (though I don't know if anyone builds hypercube networks anymore). Regular merge sort would probably be faster in most cases, unless I'm missing something.

Thanks. those info very help!!
finally, I think now I can go to the shop and choose a new one.