OpenCL plans & details

[Bitweasil]

Alright, I think I've worked out what I'm doing with OpenCL.

For those familiar with Atom of oclHashcat, I'm going to do pretty much exactly the same thing.

The nVidia OpenCL implementation, right now, is a giant pain in the ass & generally glitchy. Oh, and did I mention a giant pain in the ass?

However, the AMD/ATI OpenCL implementation is pretty solid (GPU + CPU), and the Intel OpenCL (CPU only for now) implementation seems solid.

So, I'll pull an atom & release the nVidia version as CUDA, and the ATI/CPU version as OpenCL. The really good news is that the bulk of the code doesn't change - much of my code works identically between the CUDA & OpenCL versions. I don't think I'll go as far as ifdef'ing everything in the same files, but I'll probably have a combined source tree for both.

The downside of this is that doing multi-device work (GPU + CPU on the same box) for cracking will be difficult. I suppose I'll just add network support so you can run multiple clients...

I'm hoping to have an OpenCL toolchain done in the next few weeks. The generate is done for MD5/NTLM, so now it's just the tricky bits...

Thoughts?

[Rolf]

Good choice, as NV will never ever ever make OpenCL better than it's CUDA.

[Bitweasil]

I think I even got my BFI_INT patching working properly!

[Byte/\Puker]

Hi Bitweasel,
I'm very interested in your OpenCL version of the GRT. Maybe I can help you in testing.
I have two computers one with an ATI HD5770 and the other with an ATI HD6970.

[Bitweasil]

Hi Bitweasel,
I'm very interested in your OpenCL version of the GRT. Maybe I can help you in testing.
I have two computers one with an ATI HD5770 and the other with an ATI HD6970.

I'll let you know when I have a beta out. What OS are you running? Linux, or Windows? The code is Linux only right now, but I'll be fixing that at some point.

I am hoping to have time to work on it this week

[Byte/\Puker]

Hi Bitweasel,
I'm very interested in your OpenCL version of the GRT. Maybe I can help you in testing.
I have two computers one with an ATI HD5770 and the other with an ATI HD6970.

I'll let you know when I have a beta out. What OS are you running? Linux, or Windows? The code is Linux only right now, but I'll be fixing that at some point.

I am hoping to have time to work on it this week

Sry Windows 7 64 bit but I could install Linux 64 bit on one machine.
Is this version in C++ ?

[Bitweasil]

Yes, the OpenCL stuff is C++ as well. So if you're good to compile on Windows, go for it.

I'll see about doing some Windows OpenCL builds & see how difficult it is.

[Byte/\Puker]

Yes, the OpenCL stuff is C++ as well. So if you're good to compile on Windows, go for it.

I'll see about doing some Windows OpenCL builds & see how difficult it is.

Ok I'll try my best.
But I'm not skilled in C++ I'm still learning basics in C++.
But I think it would be the best to learn something about C++ and OpenCL

[Byte/\Puker]

Hi Bitweasil

something new about the ATI support?

[Bitweasil]

Still working on it.

I could probably throw out the generate beta to let people play with. The cracking tool is still a work in progress - I hope to finish it this weekend and next week. Fighting with some OpenCL implementation problems...