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Alvaro
02-25-2011, 09:30 PM
Hi,

I am a fairly experienced programmer (C, C++, Perl, x86 assembly...) and I would like to get started using OpenCL. I was hoping I could just start by using multiple CPU cores as my device, but every tutorial I've found starts by telling me I need an AMD or NVidia graphics card. I really would prefer to just use my laptop (which runs ubuntu 10.10 and doen't have a fancy graphics card) while I try to figure out the basic syntax of the language, how to compile, etc. I can worry about running on a GPU later.

Is this possible, or do I have to use a real GPU to even compile and run "Hello World"?

Thanks!

david.garcia
02-26-2011, 06:39 AM
Hi Alvaro,

You don't need a GPU to start programming OpenCL. AMD's APP SDK (http://developer.amd.com/gpu/amdappsdk/pages/default.aspx), previously known as ATI/AMD Stream SDK, works fine with any x86 CPU.

Intel also has OpenCL drivers but AFAIK they are still in alpha.

Alvaro
02-27-2011, 01:39 AM
Thank you, David.

I downloaded the ATI Stream SDK and managed to sort of get it to work. I've gotten to the frustrating situation where the "Hello world" program in the samples gives me a segmentation fault when I run it directly, but it works fine if I run it from gdb. A classic heisenbug!

I think I'm not making enough progress, so I'll try the more traditional route of working with a real GPU.