Date: Sun, 28 Apr 2013 05:10:19 +0400 From: Solar Designer <solar@...nwall.com> To: announce@...ts.openwall.com Cc: john-users@...ts.openwall.com Subject: [openwall-announce] Openwall/Parallella Google Summer of Code project opportunity Hi, The Parallella project has kindly agreed to provide co-mentorship and hardware for a Google Summer of Code project under Openwall involving development for the brand new Parallella board. You might have heard of Parallella from their recent Kickstarter campaign, where they have successfully raised funds to develop power-efficient parallel computing boards with their own 16-core and 64-core Epiphany chips as well as Xilinx Zynq FPGAs. (The boards are just starting to ship now.) The Epiphany chip uses a novel architecture: each of its 32-bit RISC cores has 32 KB of local memory, yet each core can also access any other core's local memory. The architecture is designed to scale to up to 4096 cores per chip. The emphasis was on reaching high floating-point performance (single-precision multiply-add) per Watt. In the GSoC project proposed under Openwall, we'll focus on cryptographic uses instead (making good use of the local memory, but unfortunately not of the FPUs). Success of this project and any shortcomings we identify might help shape up future revisions of the Epiphany architecture. (In fact, I've already posted to the Parallella forum some crazy ideas on how the Epiphany ISA may be made more suitable for symmetric crypto.) We're looking to implement bcrypt and scrypt cracking and Litecoin mining on Epiphany. For scrypt (and Litecoin), we'll need to take advantage of its deliberate time-memory tradeoff. With it, the 32 KB of local memory is sufficient for Litecoin mining (with only a ~2x performance hit), despite of Litecoin's use of scrypt at 128 KB (when implemented on regular x86 CPUs). Here are the specifics (and some additional ideas): http://openwall.info/wiki/ideas#Support-for-coprocessor-boards-for-John-the-Ripper Ideally, all of this should be integrated with John the Ripper, which may run either on the ARM CPU on the Parallella board and access the Epiphany chip as a coprocessor, or it may run on a traditional desktop computer and access the entire Parallella board as a coprocessor. (The boards readily have Linux running on the ARM, so putting JtR in there shouldn't be difficult.) Here's the announcement of GNU Radio/Parallella and Openwall/Parallella GSoC project opportunities from Parallella: http://www.parallella.org/2013/04/26/google-summer-of-code-opportunities/ Also see the Parallella Community forums: http://forums.parallella.org and website of the company behind this project, Adapteva: http://www.adapteva.com Student applications are accepted by May 3rd 19:00 UTC from the Google Summer of Code website: http://www.google-melange.com/gsoc/org/google/gsoc2013/openwall Please don't wait until the last moment - apply sooner, then edit your application before the deadline if necessary. Also, besides applying formally, please contact us to discuss the specifics of your proposal and arrange for a qualification task (to be completed before the student selection deadline of around May 20). Alexander
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