Any know the best compatible gpu board to manage decrypt signals? Unknow if firepro 8xxx series is ok or have a best performance card? El 26/03/2014 10:39, "Nikos Balkanas" <nbalka...@gmail.com> escribió:
> > > > On Wed, Mar 26, 2014 at 5:12 PM, Joel Eriksson <joel.eriks...@gmail.com>wrote: > >> Using CPUs instead of GPUs doesn't make any sense at all, CPUs are a >> _lot_ slower than GPUs for these kinds of computations and you would need a >> cluster (i.e much more expensive) to be able to get similar performance. >> >> > You don't need a cluster for a multiprocessing board. Just a > multiprocessing kernel that linux provides. Radeon's GPUs are, to my > knowledge, AMD CPUs, but at lower frequencies. Granted, you don't have a > general kernel running on top of them, but an MP kernel has load balancing > and preemptive multitasking that kraken hasn't. ;-) > > But we are in agreement here. If you have a GPU sitting idle, why not take > advantage of it? > > To really crush both CPUs and GPUs, you could create an ASIC for it >> instead. I bet that there are A5/1 cracking ASICs out there already, just >> not in the hands of the public AFAIK. Using FPGAs would be a decent middle >> ground. >> > > Yeap. > >> >> Cheers, >> Joel >> >> >> On Wed, Mar 26, 2014 at 2:22 PM, Nikos Balkanas <nbalka...@gmail.com>wrote: >> >>> >>> >>> >>> On Wed, Mar 26, 2014 at 1:51 PM, Joel Eriksson >>> <joel.eriks...@gmail.com>wrote: >>> >>>> It will be _a lot_ slower. If you want to have any chance of >>>> intercepting frequency hopping calls (without having receivers constantly >>>> recording everything at each of the possible frequencies) you need to use >>>> GPUs and SSDs. If you don't have to deal with frequency hopping, and don't >>>> have to decipher in near real-time, it doesn't matter as much. >>>> >>>> Regards, >>>> Joel >>>> >>>> >>> In such case, wouldn't it make more sense to have more CPUs on the MB? >>> >>> >>>> On Wed, Mar 26, 2014 at 11:36 AM, Nikos Balkanas >>>> <nbalka...@gmail.com>wrote: >>>> >>>>> >>>>> >>>>> >>>>> On Wed, Mar 26, 2014 at 8:40 AM, Amber and Sarosh < >>>>> amber_sar...@hotmail.com> wrote: >>>>> >>>>>> Hi All, >>>>>> Can anyone please guide if GPUs are necessary for rainbow table >>>>>> lookup using kraken to find the key to decipher an intercepted >>>>>> communication or is it possible to do this using just CPUs? In case the >>>>>> later is possible how much time it will take approximately? >>>>>> >>>>>> >>>>> GPUs are not necessary, just desirable. If GPUs are missing, kraken >>>>> will still work with A5Cpu.so, but it will be somewhat slower. Assuming >>>>> that during cracking your PC is CPU limited, the benefit should scale >>>>> roughly with your setup ratio of GPU power/CPU power. In reality you will >>>>> run into RAM and table I/O bottlenecks before that. In short it is highly >>>>> depended on your setup ;-) >>>>> >>>>> The idea is, that the easier factor to improve is the CPU, so why not >>>>> do it? >>>>> >>>>> Nikos >>>>> >>>>>> Regards, >>>>>> Naheed, Amber & Sarosh >>>>>> >>>>>> _______________________________________________ >>>>>> A51 mailing list >>>>>> A51@lists.srlabs.de >>>>>> https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> A51 mailing list >>>>> A51@lists.srlabs.de >>>>> https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 >>>>> >>>>> >>>> >>>> >>>> -- >>>> Best Regards, >>>> Joel Eriksson >>>> >>> >>> >> >> >> -- >> Best Regards, >> Joel Eriksson >> > > > _______________________________________________ > A51 mailing list > A51@lists.srlabs.de > https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 > >
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