thank u all for this useful info …. special thanks for jaclaz )
The real question behind could be how to crack aes256, just the OP maybe didn't want to ask this publicly )
The answer is you don't crack eas256, no matter how much you would invest in workstations, servers, gpu clusters, etc. You play the lottery, that's it )
I built this one over the course of a couple of years (see the 4 GPU version)
https://
It's hella expensive to do and won't come together exactly as specified. For example, you can definitely squeeze all four Tesla CUDA cards in there, but the bottom one totally blocks all access to the SAS/SATA header. You'll also require a few other hacks here and there.
I ran Ubuntu on it, which was another level of complicated. Linux has been my daily driver for over a decade and my forensic OS of choice for nearly as long. The problems had to do with the motherboard's Linux support, or lack thereof, and negotiating the GPUs as a non-video asset.
Once things reached a stable level, test cases that really taxed those Tesla GPUs were a lot harder to come by than I'd considered when I first started planning for the project. Besides that, the resulting machine was noisy, gobbled up electricity like I eat cake, and could melt an igloo in December. Most GPU-centric work we did was still relegated to an older Mac Pro workstation attached to an even older Hardware Accelerator (read single external GPU) from Digital Intelligence. The Mac was quiet, cool, and easy to work with. The Tesla workstation was none of those.
I hadn't worked the bugs out of the workstation too long before I retired, so I don't really know how much or what kind of use it's seen since then. I'll say that I enjoyed the build, but can't imagine doing it again unless I owned or worked in a shop that had problems walking in the door on a daily basis that I could prove to myself a single GPU run-of-the-mill forensic workstation couldn't handle in a reasonable amount of time.