One particular thing that keeps intrigued is why accesing system mem in device kernels isn't supported right now in OpenCL as this is turn seems to be supported both by AMD and Nvidia in both their implementations (since CUDA 2.2 and CAL). I also remember seing one presentation dated back to late 2007 citing support in Brook+ as future plans so it must be there by now..
I don't know how if any this has on AMD hardware but at least for CUDA is praised as a very potentially important feature..
I'm refering as an extension and perhaps is going to be added soon.. and perhaps
it is because is requires some work..
For more info in CUDA where is called pinned system mapped mem.. more or less.. see ddj article..
Sunday, 25 October 2009
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