Hmm, after getting a bit of stuff working with the CPU OpenCL yesterday I thought i'd better dig deeper into the GPU side of things. Kinda wish I hadn't. It's ... a bit ... messy. It's kind of like it wants to be a vector processor but can't make up it's mind. To get the best performance you have to know a lot more details about the internals (on the specific card in question) than you do on something like the CELL CPU, and it's more difficult to realise it. The minuscule local store could be a real bottleneck. I wish I still had linux on my PS3 to be able to try out some CELL code to compare, but fucking Sony did that in didn't they?
I guess it'll be a challenge.
Thursday 10 June 2010
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