Date: Mon, 08 Oct 2012 13:43:23 -0400 From: "Rick \"Zero_Chaos\" Farina" <zerochaos@...too.org> To: john-users@...ts.openwall.com Subject: Re: CUDA tweaking to your actual GPU -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/08/2012 01:17 PM, magnum wrote: > On 8 Oct, 2012, at 18:11 , Solar Designer <solar@...nwall.com> wrote: > >> On Mon, Oct 08, 2012 at 11:40:40AM -0400, Rick Zero_Chaos Farina wrote: >>> So can we do the same for cuda then? >> >> The same == what? Several things have been mentioned. Anyhow, I and >> others in here understand that distros want to be able to have a single >> mostly-binary build that is near-optimal for a wide range of systems. >> We do have this in mind. >> >>> This is what hashcat does now as well. >> >> As far as I'm aware, hashcat uses precompiled kernels with both OpenCL >> and CUDA - perhaps many for each hash type, yes (for different GPUs). > > Why would you want precompiled kernels for a distro though? I assume Hashcat does this mostly for protecting its source code - which we do not need (nor want) to. There are obvious benefits with run-time compilation, and *especially* for distros. It was designed that way for a reason. If you'd make a "jumbo-opencl" package from our current tree, with dependecies of *any* opencl framework package(s), the end user will be able to run it even if his/her hardware (and drivers/framework) are newer than the JtR package itself. I recall seeing some sm_10 or something in the sources suggesting to change to 20 or 30 or whatever depending on hardware. Please don't shoot me if I'm wrong, I freely admit I'm not looking right now but I bet you know what I'm talking about. > > I think we have other important tasks for distros though: Apart from the license mess... I'm not sure our current placement of OpenCL and CUDA headers and sources - in the run directory - works at all with a systemwide build. Has anyone tried that? Will they currently end up in the systemwide bin directory or in ~/.john? Will the OpenCL or CUDA program find them at all? *.cl ends up in /etc and john finds it fine. Gentoo has been shipping opencl/cuda enabled jtr since it was released. Thanks, Zero -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQIcBAEBAgAGBQJQcxC7AAoJEKXdFCfdEflK2PgP/jH8Pg+Gn45Em/rhc0MnSB9Y Rlp6oMBL3qKBuzUm2uFMKvPY1zlz9xD5K18KO8y9JptFpKI9dletjRc9e5xlbtQ7 4PQvxzrr+yIZX0/YFp3CDKP0uebBrjH0d0IArw0LaoKA7Gt6DP8pVUhRE3HNvqx1 5qMHxKCnBarpFHY+4hE6Ku25X6q0b+kOibn879ZIuoF22kFr2NrWJQwDB+nRqBYk 6IHXL5S3OHQuzDuOnRAKm3nviAQvsW3lxFfRShdz6IumdkZzeAzY+Api7wHH5c54 QZVlhbi4p2hGOQkb1IbV5ETBOlzIe4yXpTqYzPuHEi+eXea9M8F/xp5BDzUkmbXD OvWqGKYJQwtNFziE2RYkxS6DY+Z83v5HReVCZuN3tNDAvInjy7edd1N+DQkg9JT3 5Pkrxg6Etoy3eIEkq3Mz7NN7aRR7IQueINA9sZLs61CojUsOM0vTk5rt+y7932Ue aEEdtAzv4XcDztSCgVlcX5mqv6wmIyJ+I7OUJCJ7MFp671hiRDY+nT1UngwtL+b9 faBKJdE90PxArJoHpyB0LbLlSQrry6WplFlLhhVRxNMzTrV7ytwglsXZkgvSiOha /Mm8oUR4rBcaasC7QwXnHhdGSJLEKomjwcuL/TEJRghTuoWh/MKmDFV6NyKJJqbN /8O7ZY2dsrjIQscIVAQf =3TAu -----END PGP SIGNATURE-----
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