AFAIK, JavaCL / OpenCL4Java is the only OpenCL binding that is available on all platforms right now (including MacOS X, FreeBSD, Linux, Windows, Solaris, all in Intel 32, 64 bits and ppc variants, thanks to its use of JNA). It has demos that actually run fine from Java Web Start at least on Mac and … Read more
It is a sampled measurement over a time period. For a given time period, it reports what percentage of time one or more GPU kernel(s) was active (i.e. running). It doesn’t tell you anything about how many SMs were used, or how “busy” the code was, or what it was doing exactly, or in what … Read more
Metaphorically speaking ati has a good engine compared to nvidia. But nvidia has a better car 😀 This is mostly because nvidia has invested good amount of its resources (in money and people) to develop important libraries required for scientific computing (BLAS, FFT), and then a good job again in promoting it. This may be … Read more
Nope, you can’t use CUDA for that. CUDA is limited to NVIDIA hardware. OpenCL would be the best alternative. Khronos itself has a list of resources. As does the StreamComputing.eu website. For your AMD specific resources, you might want to have a look at AMD’s APP SDK page. Note that at this time there are … Read more
[Edit OCT 2017 as even this answer gets quite old] Most of these answers are quite old, so I thought I’d give an updated summary of where I think each project is: GPU.Net (TidePowerd) – I tried this 6 months ago or so, and did get it working though it took a little bit of … Read more
Two of the best references are NVIDIA Fermi Compute Architecture Whitepaper GF104 Reviews I’ll try to answer each of your questions. The programmer divides work into threads, threads into thread blocks, and thread blocks into grids. The compute work distributor allocates thread blocks to Streaming Multiprocessors (SMs). Once a thread block is distributed to a … Read more
For any optimization, it’s always best to test, test, test. I would try at least sorting networks and insertion sort. If I were betting, I’d put my money on insertion sort based on past experience. Do you know anything about the input data? Some algorithms will perform better with certain kinds of data. For example, … Read more