[Hardware] Fully unrolled RC5 on FPGA

[Kris Amy]

What sort of GPU would be needed? I have a spare 7900GS that could be thrown
to the cause.

Cheers,
Kris

-----Original Message-----
From: Frédéric Bastien [mailto:nouiz at nouiz.org] 
Sent: Thursday, 16 November 2006 8:58 AM
To: Hardware
Subject: Re: [Hardware] Fully unrolled RC5 on FPGA

Hi,

The current GPU are being transformed to stream processor. I assume we 
can transform the RC5 algorithm on this architecture by streaming the 
key to the engines. But I never coded for GPU or the RC5. I suppose, 
this approach will be not have an optimized processor as an ASIC or an FPGA.

But, how many people are ready to buy a new board for this purpose? How 
many people who buy new computer with a good GPU will accept to share 
it? What I'm telling is that I think their is more people in the second 
group. I see it as the same reason why we use a distributed architecture 
instead of buying a super-super-computer. It is cheaper as people 
already have the hardware and the power cost is not counted by the 
individual who install the software.

But as all project, we need people who can invest time in them. I can't. 
Their is people that are interested to make an implementation on FPGA. 
This is GREAT and give more chance that this will be done especially 
since their is a working implementation. But, they need to finish the 
last step.

Just my personal thinking on this project. Continue the good work!!

Frédéric Bastien

Olivier Meyer wrote:
> Folding at home is trying to use graphic cards, but there is one reason 
> why FPGA is much better:
> A graphics card is NOT DESIGNED to execute general purpose code. It is 
> made to render video and 3D images. What Folding has done is they have 
> managed to use the restricted instruction set to do their 
> protein-folding stuff. An FPGA design is the one thing less customisable 
> than an ASIC. We can choose whatever we want to put on the FPGA, and we 
> can make it check 1 key/cycle. I wonder, can our FPGA implementation be 
> used on cheap, low power FPGAs that a student can afford (hint, hint!).
> 
> Has anyone tried to use 74HC discrete logic to make an RC5-72 core?
> 
> 
> On 11/15/06, *Frédéric Bastien* <nouiz at nouiz.org 
> <mailto:nouiz at nouiz.org>> wrote:
> 
>     To my knowledge Folding at home try to use graphic card and not FPGA.
>     This could be interesting as this don't require new hardware. But we
>     will need people that have time to implement it.
> 
>     Frédéric Bastien
> 
>     Olivier Meyer wrote:
>      > If we will use a microcontroller to control the FPGA, an AVR
>     would be
>      > much better than a PIC for many reasons:
>      > *more register space
>      > *a GCC port
>      > *higher speed.
>      >
>      > Notice that we got to the FPGA before Folding at Home!
>      >
>      > On 11/15/06, * gmeurice at dice.ucl.ac.be
>     <mailto:gmeurice at dice.ucl.ac.be> <mailto:gmeurice at dice.ucl.ac.be
>     <mailto:gmeurice at dice.ucl.ac.be>>*
>      > <gmeurice at dice.ucl.ac.be <mailto:gmeurice at dice.ucl.ac.be>
>     <mailto:gmeurice at dice.ucl.ac.be <mailto:gmeurice at dice.ucl.ac.be>>>
>     wrote:
>      >
>      >     Bonjour,
>      >
>      >     Tuesday, November 14, 2006, 8:41:25 PM, you wrote:
>      >
>      >     JLB> Hi Guerric,
>      >
>      >     JLB> Any chance I can get you go target your design to an
>      >     XCV2000E-6BG560C
>      >     JLB> and tell me if it fits and what the clock rate estimate
is?
>      >
>      >     JLB> It's just a data point for me to compare two year old
>     data to
>      >     the XCV4LX
>      >     JLB> numbers.
>      >
>      >     JLB> Thanks,
>      >     JLB> John
>      >
>      >     Ok, I can do that.
>      >     The design will need 4 times the number of bRAMs compared
>     with the
>      >     Virtex4 design: 16-bit data width and no "read before write"
>     mode.
>      >
>      >     With this kind of RAMs, a register on the B signal of the
>     KeySchedule
>      >     bloc could be saved using the fact that input is mirrored to
the
>      >     output of the bRAM while writing. I currently don't plan to
>     make this
>      >     optimization. (this would mean a saving of 26*3 *32/2 = 1250
>     Slices).
>      >     Whatever, it is probably bad from a place&route point of view.
>      >
>      >     I will test the full design with the new long shift register
>     and will
>      >     provides the implementation results.
>      >
>      >     --
>      >     Guerric
>      >
>      >
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>      >     http://lists.distributed.net/mailman/listinfo/hardware
>      >
>      >
>      >
>      >
>      > --
>      > -----------------------
>      > Olivier V. Meyer
>      > Congress shall make no law respecting an establishment of
>     religion, or
>      > prohibiting the free exercise thereof; or abridging the freedom of
>      > speech, or of the press; or the right of the people peaceably to
>      > assemble, and to petition the government for a redress of
grievances.
>      >
>      >
>      >
>
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> 
> 
> -- 
> -----------------------
> Olivier V. Meyer
> Congress shall make no law respecting an establishment of religion, or 
> prohibiting the free exercise thereof; or abridging the freedom of 
> speech, or of the press; or the right of the people peaceably to 
> assemble, and to petition the government for a redress of grievances.
> 
> 
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