tmsr - Search: fpga

1089 entries in 0.631s

asciilifeform: (XC6216 was the one and only known fpga where random wiring was guaranteed -never- to release the magic smoke.)

BingoBoingo: fluffypony: neither. Pick beast from the 80's and write it to a cheap FPGA dev board

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock] | Page 109 | Bitcointa.l

kakobrekla: https://bitcointa.lk/threads/starting-a-new-fpga-mining-farm-contract-cognitive-resurrected-on-havelock.47052/page-109#post-4510378

asciilifeform: BingoBoingo: vaxberry pie << pick up fpga dev board on ebay.

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

tg2: shit even shoddy first gen sha fpga's are still being sold lol

decimation: That 'therac-25' incident is interesting, thanks for the tip. If you are making a 'firmware interlock' for a radiation machine, I would think you would at least make it in TTL or on an FPGA or something.

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

asciilifeform: perhaps if cray were alive, you could buy 'fpga' the size of a billboard...

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

asciilifeform: and that, while certain interesting classes of attack are impossible on an fpga,

asciilifeform: my point was that you end up trusting a big fat american duopoly when using modern fpga.

asciilifeform: (fpga has no idea where the 'cache' will be on the fabric, or even that it will be configured as cpu rather than, say, decompressor)

asciilifeform: it is quite true that you cannot put this kind of trap in an fpga without making the whole thing look quite ridiculous even under an optical microscope.

asciilifeform: several places have massive fpga clusters, hijack those.

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

asciilifeform: if fpga with published internal specs existed (as it did in 1994, say) but of modern proportions, this could change.

mike_c: fpga that did blockchain parsing would completely ignore tx malleabiality (as it should). PEP would tell you WHY you are ignoring it, so when you are writing custom shit you don't mess it up.

mike_c: my counterargument was that a formal definition (be it BNF or fpga) of those is less useful than an english spec explaining rationale.

asciilifeform: sort of how i once pontificated re: fpga implementation of bitcoind (e.g. verilog) would be a good 'cruft shedder' exercise.

asciilifeform: in the early days of fpga mining

BingoBoingo: Rpi might actually be an interesting thing if maybe they would have went MIPS (or FPGA and pick a core of choice) and offered ECC Ram

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

asciilifeform: likewise, each vendor (and even particular flavours of fpga from same vendor) provides slightly different building blocks on top of the usual LUTs

asciilifeform: if you don't optimize for a particular fpga, you can't get anything close to the maximum rated clock of the sdram in question

asciilifeform: because the opencores libs aren't optimized for a particular fpga

asciilifeform: the correspondence between each bit of the bitstream and the internal logic of the fpga is a $billion secret

Azelphur: that's one of my things I'd like to work on in the future, he asked for the 6 month plan, which goes beyond the FPGA ;)

Azelphur: and baring in mind he's pretty much perfectly qualified (number theory / fpga) it'll be interesting to see what he comes up with

mircea_popescu: Azelphur so your product you've won with is a fpga ?!

Azelphur: but you do have a point, I could get our FPGA guy to post some stuff

Azelphur: mircea_popescu: perhaps, but our FPGA engineer isn't (I picked the engineer myself)

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

asciilifeform: or hell, even fpga with sdram controller

BingoBoingo: asciilifeform: Turing coin? That ultimate FPGA coin you've mentioned before.

mircea_popescu: early on a fpga

benkay: sounds like the xilinx tools are designed to implement a certain set of routines in silicon but the silicon itself can't change the implemented routines until you bake the configuration of the fpga into the fpga itself. am i close?

asciilifeform: likewise, and even more elementary: can't make a self-reconfiguring xilinx (or other fpga based) system without x86/unix in the loop unless you can ditch the vendor's toolchain

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on[Havelock]

mircea_popescu: fpga + ram much better solution

mircea_popescu: "It is possible to do scrypt with a fpga, so that implies asic is possible too."

thestringpuller: i guess you can always just do FPGA

BingoBoingo: asciilifeform: Any particular FPGA toolchains worth leaning or do they get replaced too soon.

benkay: asciilifeform: examples: targeting fpga's; dynamic workfns (as you mentioned); sorcery resistance

asciilifeform: mircea_popescu: if you're sitting on a warehouse full of fpga.

BingoBoingo: Seems for Litecoin devotees this insanity is going to be magnified as CoinDesk has just reprinted so many people's "press releases" about impending litecoin ASICs and if a single manufacterer delivers it will have meant Litecoin skipped that awkward FPGA adolescence while still staying a fraction of a fraction of bitcoin

mircea_popescu: consequently, the first fpga's were pretty much a potluck affair

mircea_popescu: is anyone fpga-ing litecoin yet ?

benkay: what kind of hashing scenario would target fpga's well?

asciilifeform: trick is to devise an alt where the ideal miner is actually a full fpga.

asciilifeform: re: the folks sitting on heaps of obsolete fpga: why hasn't even one started an altcoin with a diddled workfunction

topace: or, for most of the fpga's trade-in value

Diablo-D3: to interact with the fpga

asciilifeform: yeah actually even my own toy fpga miner had this one.

mircea_popescu: afaik this has been done since the fpga days right ?

jborkl: the size of a old fpga single

benkay: timecube fpga buttcorn minors

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on [BTC-TC]

asciilifeform: Luke-Jr: sdram plus fpga which does nothing but sCrypt, vs. a general-purpose pc?

asciilifeform: everybody knows that you can get FPGA+sdram socket boards for pocket change, right?

dexX7: mircea_popescu: i just wanted to exploit this rare situation of "lecturing you" :) scrypt is designed in a way that the bottleneck is rather the amount of fast accessible memory than computational speed and people say "litecoin is fpga/asic resistant" for that reason

Azelphur: the massive GPU difficulty spike, then the massive FPGA difficulty spike, and the Mt. Gox hack that dropped the exchange rate to practically zero

benkay: an interesting question is how many btc would be required to buy enough GPU/FPGA horsepower to effect a 51% attack

mod6: i suppose that something like urbit could actually live inside of other software eventually as some sort of embedded system. or if it ever took the leap to native hardware, it could run on some sort of FPGA or pre-set asic chip.

pankkake: http://cointerra.com/coolit-systems-selected-cointerra-partner-liquid-cooling-solutions/ that's actually more interesting to me than their fpga demo

pankkake: Pending "Scrypt ASIC will exist in 2013", haha, I like this one. have we even seen a fpga?

MilkyLep: cointerra recently showed thier fpga if im not mistaken

thestringpuller: lol people mine on fpga's

benkay: (fpga's or loosened out asics...w/e)

benkay: although fpga arrays are how i'm going to heat the next office

asciilifeform: question then is: ebay is chock-full of FPGA miner rigs being sold off for pennies on the dollar. why isn't anyone buying them up for use as space heaters?

chaang-noi: well... im not pro bfl at all.... i was one of the first to call bs on the specs, and that was fpga shit

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on [BTC-TC]

jurov: they got FPGA-like power/perfomrance ratio

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on [BTC-TC]

mircea_popescu: that's one sad turn of events tbh, they certainly impressed back in the fpga days when they figured out what old chips bfl sanded off to pass as their ip

Hollywood: Well BFL I think (someone correct me that can remember more) fpga was off by 300% on power, Asic was off by 300% on power

gecko_x2: til year end and the difficulty is expected to be much higher at that time. It's also worth pointing out that FPGA era products were still very valuable well into ASIC generation rollout, and the relative power difference between 65nm and 28nm is much much less. "

bgupta: singles where FPGA based, no?

ozbot: COGNITIVE: Model FPGA Performance | BMF

ThickAsThieves: http://tsukino.ca/bmf/2012/06/03/cognitive-model-fpga-performance/

ThickAsThieves: is this from when usagi was a girl? http://tsukino.ca/bmf/2012/06/03/cognitive-model-fpga-performance/

ozbot: Starting a new FPGA mining farm/contract Cognitive Resurrected on [BTC-TC]

smidge: why, do we have upcoming ipos of people posting fpga pics?

smidge: namworld you first need a picture of a fpga to enable ipo frenzy

userioao: well it doesn't help we just got a photo of fpga plugged into 3g router

Vbs: http://www.easic.com/high-speed-transceivers-low-cost-power-fpga-nre-asic-45nm-easic-nextreme-2/easic-nextreme-2-fast-turnaround-asics-manufacturing/

Vbs: this is eAsic's 45nm chip http://www.easic.com/high-speed-transceivers-low-cost-power-fpga-nre-asic-45nm-easic-nextreme-2/easic-nextreme-2-look-up-table-lut-architecture/

Chaang-Noi: i joined the forum to troll bfl with thei fpga claims of power.. they were 4005 off and i won a bet