Date: Sat, 5 Mar 2016 18:45:27 +0100 From: Matus UHLAR - fantomas <uhlar@...tomas.sk> To: john-users@...ts.openwall.com Subject: Re: devices for --dev= option >W dniu 05.03.2016 o 17:12, Matus UHLAR - fantomas pisze: >> in README-OPENCL I read about --dev= option, but I don't quite understand >> what it means. >> >> this is error from "john --list=opencl-devices --dev=help" >> >> Error: --device must be numerical, or one of "all", "cpu", "gpu" and >> "accelerator". >> >> is it supposed to list opencl-capable devices only? On 05.03.16 17:57, Marek Wrzosek wrote: >I think it should be: > >john --list=opencl-devices > >to list OpenCL-capable devices. yes, but I somehow couldn't get --dev to complain without that one... >And --device option is to choose one or more devices, if you have more >than one OpenCL-capable device, for actual cracking process. This option >allow only numerical values or keywords "all", "cpu", "gpu", >"accelerator" (or "acc" for short). yes, my question was if --dev only applies to opencl devices... > To use OpenCL you need to choose >format with OpenCL support. autoswitching formats to nvidia or opencl versions would be great... > But I could be wrong, because I don't have >any OpenCL-capable device. I have nvidia capable of opencl and cuda... however openl seems to be faster. The CPU should be opencl-capable too, and as long as the card has about 225% performance of the CPU, using them all would be the best combination. -- Matus UHLAR - fantomas, uhlar@...tomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Windows 2000: 640 MB ought to be enough for anybody
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