Hi Andreas, That code is the latest, I haven't touched it in a long time since my work has taken me away from opencl for the time being. As for the licensing, I put in an MIT license so its free as far as I'm concerned. Some of the radix code comes straight from the nvidia sdk example, we had to modify it a good bit to sort keys and values but I'm not sure what their licenses are.
This is also definitely not the best implementation of radix, as there is a much faster (and open) CUDA implementation. I would have hoped it would be ported to OpenCL by now, and there is this project: http://code.google.com/p/ocl-radix-sort/ which is GPL. good luck! I'd like to hear about any improvements that come along! Ian On Sun, Jan 15, 2012 at 9:35 AM, Andreas Kloeckner <[email protected]>wrote: > Hi Ian, > > On Sun, 17 Apr 2011 22:29:41 -0400, Ian Johnson <[email protected]> wrote: > > I finally bit the bullet and got radix working in PyOpenCL :) > > It's also improved over the SDK example because it does keys and values, > > mostly thanks to my advisor. > > Additionally this sort will handle any size array as long as it is a > power > > of 2. The shipped example does not allow for arrays smaller than 32768, > but > > I've hooked up their naive scan to allow all smaller arrays. > > > > > https://github.com/enjalot/adventures_in_opencl/tree/master/experiments/radix/nv > > all you really need are radix.py, RadixSort.cl and Scan_b.cl > > > > some simple tests are at the bottom of radix.py > > > > I hammered this out because I need it for a project, it's not all that > clean > > and I didn't add support for sorting on keys only (altho it wouldn't take > > much to add that, and I intend to at a later time when I need the > > functionality). Hopefully this helps someone else out there. I'll also be > > porting it using my own OpenCL C++ wrappers to include in my fluid > > simulation library at some point. > > > > I also began looking at AMD's radix from their SPH tutorial, but they use > > local atomics which are not supported on my 9600M > > Out of personal need, I'm thinking of bringing some kind of sort > functionality into PyOpenCL. I saw that you made a number of > enhancements to your sort code since you sent the announcement. Is your > most recent sort code still in the repo above? What is the license for > that code? More generally, what course of action would you recommend? > > Thanks in advance for your help, > Andreas > -- Ian Johnson http://enja.org
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