Vincent, Each of the 16 processors on the chip has a single precision floating point unit, which includes multiplication. What it doesn't have is 64-bit floating point. And they already have samples at 28nm, so get off your high horse and admit that you got this wrong. It is a cool project and I look forward to seeing these boards next year.
See page 36 of the epiphany_arch_reference_3.12.10.03.pdf found here: http://www.adapteva.com/support/docs/e3-reference-manual/ Quoted here: " 7.1.4 Floating-Point Unit The floating-point unit (FPU) complies with the single precision floating point IEEE754 standard, executes one floating-point instruction per clock cycle, supports round-to-nearest even and round-to-zero rounding modes, and supports floating-point exception handling. The operations performed are: addition, subtraction, fused multiply-add, fused multiply-subtract, fixed-to-float conversion, absolute, float-to-fixed conversion. Operands are read from the 64-entry register file and are written back to the register file at the end of the operation. No restrictions are placed on register usage. Regular floating-point operations such as floating-point multiply/add read two 32-bit registers and produce a 32-bit result. A fused multiply-add instruction takes three input operands and produces a single accumulated result. A large number of floating-point signal-processing algorithms use the multiply-accumulate operations, and for these applications the fused operations has the potential of reducing the number clock cycles significantly. " On Sat, Oct 27, 2012 at 6:02 AM, Vincent Diepeveen <[email protected]> wrote: > Not gonna be easy for him. > > Last time i checked producing a low volume low power chip in a couple > of thousands > it was $50 a chip. > > He'll have to deliver now a few thousands of ARM socs with such a co > processor for $99 a person > around may 2013, and the co processor must have at least 16 processors. > > Then there is shipment costs and the ARM SOC costs. > > Now in Europe there would be VAT on top of the total amount as well, > making it tougher > to get the total costs at $99. In most nations VAT is just above 21% > going up to 25% in Eastern Europe. > > So there is going to be very little, if any, profit on this. > > At most a few dollars. > > All this for a co processor that's supposed to not have a > multiplication unit - so it can't comply to OpenCL. > > On Oct 27, 2012, at 10:48 AM, Eugen Leitl wrote: > >> >> Thanks to everybody who contributed! >> >> http://www.kickstarter.com/projects/adapteva/parallella-a- >> supercomputer-for-everyone >> >> 4,295 >> Backers >> $782,862 >> pledged of $750,000 goal >> _______________________________________________ >> Beowulf mailing list, [email protected] sponsored by Penguin >> Computing >> To change your subscription (digest mode or unsubscribe) visit >> http://www.beowulf.org/mailman/listinfo/beowulf > > _______________________________________________ > Beowulf mailing list, [email protected] sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf -- Tim Mattox, Ph.D. - [email protected] _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
