Can I utilise cores in GPU from c# WITHOUT change to code?

Question

I realise there are several questions on this subject but I believe my angle is unique.

I have a mature C# app that I use for scientific number crunching. In the code I start 24 C# threads on my 24 HyperThread (i.e. I have 2 CPUs each with 6 cores/ 12 threads) workstation. I run Windows 7 and it handles it brilliantly - I am able to use my full processing power to get my work done.

I see that some GPUs advertise "448 cores". If I bought one of these would my c# app be able to utilise them? I mean without rewriting my code in any major way. Would the threads I start get taken up by the GPU cores instead of the CPU HyperThreads as is the case now?

FOLLOW ON QUESTION

Hi, I appreciate the answers I am getting - even if negative.

Is there any other hardware I should be thinking about (not too expensive) that would give me a large number of Cores, but would be able to run my c# code without a rewrite?

Answer 1

You'd need to rewrite your code really to make use of a gpu. These links might be useful:-

CUDA .NET - CUDA functionality through .NET apps.

CUDA Sharp - C# wrapper for nVidia Toolkit

These are based on the nVidia CUDA system so you'd need an nVidia card for this of course.

Answer 2

Heh... no. No way no how. Those "cores" aren't the same. To take advantage of any GPU computing, you need to write your computations in a very specific way. Try OpenCL maybe. But the answer to your question is no.

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As for your edit, the only possible thing with few changes (depending on how you've currently structured it) is a processor. If you're not making general software, you could probably run 48 non-HT individual cores. Maybe that's not the bottleneck, though. You could increase your RAM to make everything generally faster to a certain point.