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81  Bitcoin / Hardware / Re: Looking for system integrators for new asic on: June 04, 2013, 05:08:58 AM
It is now June.  Time for an update.
82  Bitcoin / Hardware / Re: KnCMiner Openday on: May 30, 2013, 04:48:30 AM
It's a PROTOTYPE with HALF the number of modules of the FULL PRODUCT. 
83  Bitcoin / Hardware / Re: *New PCI-E Based ASIC miners 1.2th/s - 1.9th's +\- 10%* on: May 26, 2013, 02:52:41 AM
Holy $#!+ what a f&@#in' train wreck.  If this guy actually was who he says he is, he would at least be able to speak the lingo.  

SCAM!  Go ahead prove me wrong.  Send me a board that you designed.  But not one from some other web site you commandeered from a legitimate company.  Hell, even send me PHOTOS of the board you designed.
84  Bitcoin / Hardware / Re: Looking for system integrators for new asic on: May 25, 2013, 04:02:39 AM
Still no updates from helveticoin? 

Hmmm... I'm wondering about the KnCminer and ORSoC partnership....

So what's up helveticoin?  Any news yet?
85  Bitcoin / Pools / Re: [2000 GH/s] EMC: 0 Fee/PPS/DGM/Dwolla/SMS/2FA/GBT/Stratum/Vardiff on: May 19, 2013, 12:22:24 PM
Last activity 18 hours ago, but all my workers are currently hashing away .. ?!
Same here.  Very strange.
86  Economy / Collectibles / Re: CASASCIUS PHYSICAL BITCOIN - In Stock Now! (pic) on: April 10, 2013, 06:59:53 AM
I wanted some community input on this just for fun:

I'm at a point where I have a 1/2oz silver coin die done that says 5 BITCOINS.  But 5 BTC is now worth a hell of a lot more than it was when I started.

I almost want to start over and do 1oz=1BTC 1/2oz=1/2BTC and a smaller coin for 0.1 BTC... all in silver, and offer each (at least the biggest one or two) with the optional gold plated B like I did last time.

Do I run some coins with the 5 BITCOINS die, or just scrap it?  It will seem kind of weird having a 5 and a 0.5 BTC coin that are, well, alike in every way, including the year 2013, and I'm tempted to just scrap the die.


I suggest you just wait another month when 1 BTC = 1 oz of GOLD!!   Grin  Wink
87  Bitcoin / Hardware / Re: First BFL ASIC! on: April 06, 2013, 02:16:26 AM
Quote
Info
Opening date: Sept. 23, 2012
Bet deadline: March 4, 2013 end of day Eastern Time
Event date: April 1, 2013 end of day Eastern Time
Category: Technology
Total agree bets: 213.82
Total disagree bets: 334.53
Total weighted agree bets: 233413.233
Total weighted disagree bets: 605930.295

Since it says "April 1, 2013 end of day Eastern Time", wouldn't that give them until 23:59PM on April 1?  By my estimation, they were 23 hours early.  Perhaps the person who wrote the bet INTENDED to say "March 31, 2013 end of day Eastern Time" but that's not what was written.

Disclaimer:  I had a bet on a different site hoping BFL would ship in March 2013.  I lost that bet.
88  Bitcoin / Hardware / Re: wild and unsubstantiated speculation about BFL's power woes on: April 04, 2013, 02:08:25 AM
Disclaimer: I don't know anything that hasn't been posted here in the forum, and I have been too busy to read more than 5-10% of that, I have no inside info, this is just speculation based on past chip design experience, yadda yadda.

It sounds like BFL is having some difficulties with their chips (a) running at ~25% of rated speed and (b) consuming 4-9x more power than they planned.  These numbers are vague since the info in the postings I've come across has always been patchy and has been presented very poorly (they'll quote an actual hashrate but decline to say what device it came from, or show a photo of a kill-a-watt but decline to say exactly what's plugged into it, etc).  I would welcome a simple and straightforward posting by BFL saying "we have the chips running at X% of advertised speed and consuming Y J/GH".

They've also mentioned that the wafer-probing tests (which I assume ran only a tiny portion of one chip at a time due to the fact that unpackaged chips overheat when run at full speed) produced the power results they expected, but the packaged chips consume way too much power.

I'm going to make a wild guess here and speculate that they ran all their pre-production SPICE simulations using the default 25 degree C temperature.

This is a pretty common mistake.  It would also explain everything I've seen so far.

Circuits always simulate ridiculously well if you run SPICE at 25 degrees.  The problem is that any circuit doing substantial amounts of computation will generate enough heat to raise the local temperature to at least 100 degrees C.  This in turn reduces the power efficiency even further (circuits running hot run slower and burn more power), an effect that feeds on itself.  Even the best packaging and heatsinking still leaves 3-4 degrees C per watt, and often those figures neglect to include the thermal resistivity of the CMOS bulk (another few degrees C per watt).  Multiply all of that by a 10-20W chip and the junction temperature is going to be a lot closer to 100-110 degrees than 25 degrees in any sort of reasonable ambient temperature.

Repeated disclaimer: this is just a wild guess, I have almost zero information, I have been way too busy with other urgent crap to read most of the forum threads, etc, etc.

Similar to the OP, I have no inside information, only that which has been posted on the public forums.  I do have a few points of clarification - based on my limited understanding of BFL's situation.

1) None of the wafers have been wafer-probed and BFL does not have capability to do so.  I would hope and expect they will fix this in the future.  If the die do yield well (say > 95% good), then it is reasonable to skip wafer probe and do a "blind build".  This is what BFL gambled on.

2) Of the first 6 wafers, they choose to "burn" one by skipping the bumping process (because it was causing delays) and use wire bonding to a bare minimum number of the bump pads.  These test die could not be fully tested or run at full speed for the obvious reason that only a few of the power / ground pads were connected.  These die from wafer 1 had good power - at least within the expected range.  They did this while waiting for the other wafers to get bumped so they could verify functionality of the design.

3) Wafer 2 was bumped and packaged.  (Note that wafers 3 to 6 were bumped but NOT packaged at this time.  They should be packaged by now though.)  These are the chips that have been mounted to test boards and exhibit the high power levels. 

4) I have seen nothing posted about the current status of wafers 3 to 6.  It is POSSIBLE that BFL's power issues COULD be limited to wafer 2 and wafers 3 to 6 will have "good" power.  It is well know in the chip business that there can be (and often IS) a variation from wafer to wafer on parameters such as frequency and power.  Of course, the fab tries to minimize these variations, but they do occur.  Especially for the first wafers out. 

5) In addition, there is a variation of different die on the same wafer.  If BFL happened to pick poor die for their test boards, then other die from wafer 2 might be lower power.  However, I do not think this is likely in this instance.

6) BFL has said they will underclock devices to meet a reasonable power envelope and then ship more units to each customer so that they will still receive the GH/s that they ordered.  So if the SC Singles need to run at half speed (30GH/s) to not overload the power circuitry, then a customer that ordered one will actually receive two.  I do not expect there to be a fire problem.

7) BFL has said they are re-designing the boards to improve the power situation.  To me this is unclear what they are doing.  I think Josh said something about using 2 regulators instead of 1 - but I could have that wrong.

The above is true to the best of my understanding but of course could be partly (or completely) wrong since I can only interpret what I've seen on the forums.

Additional disclaimer: As stated earlier on this forum, I have ordered an SC Single.  Yes, I am biased but I try to minimize that bias in all my posts and state as much factual information as possible and remove my opinion from it.
89  Bitcoin / Hardware / Re: Want to start a ASIC mining rig retailer on: April 03, 2013, 12:18:55 AM
Wouldn't it be nice to be able to buy mining hardware on demand, and not have to wait months? I play tennis with an investment banker who's interest has been perked by Bitcoin.

So first I need to figure out how much it will cost to develope the hardware. If some experts could provide me with some details so that I can provide them to the board designers, that would be great. None of you happen to have a Gerber file for an ASIC miner by any chance, do you?  Smiley
The boards are the easy part.  Any decent college kid can do those. 

What you will not be able to easily acquire are the ASIC chips themselves.  You're looking at a multi-million dollar project (and at least 12 months) to design a chip to be competitive with what will be out there in that time frame.  If it was as easy as you think it is, there would be 20 or more companies selling them already.
90  Bitcoin / Mining / Re: rpi B for cgminer on: April 02, 2013, 02:37:48 AM
Is anyone running p2pool on an rpi?  I would guess the memory overhead of running bitcoin-qt would be WAY too much for the 256MB memory in my rpi (or 512MB in the newer ones) and SD card combination. 

Has anyone done this yet?  If so, what were your results?
91  Bitcoin / Pools / Re: [2000 GH/s] EMC: .7 Chain 0 Fee/PPS/DGM/Dwolla/SMS/2FA/GBT/Stratum/Vardiff on: March 28, 2013, 06:12:19 PM
I can't seem to get a reply on the EMC forums, so I'll post here:

What's the deal with the rewards dropping to less than half of what all the profitcalc sites say it should be?
Profitcalcs say I should be earning roughly 0.05 BTC per day, whereas EMC is only crediting me with about 0.018 BTC per day.
This has been going on for several days now, and is costing me real money at the current BTC exchange rate.
I've tried asking for clarification, but haven't gotten a solid answer yet.
Can someone help straighten this out, or do I need to just find another pool?

Thanks,
Elmojo
It is similar for me.  My understanding is that the luck is bad so payout is bad.  Wait a few days and the luck should get better.  I'm assuming your using DGM not PPS right?
92  Bitcoin / Hardware / Re: -= Galaxy 1 - 20nm ASIC Announcement =- on: March 28, 2013, 12:48:05 AM
In summary what I meant is that his LinkedIn profile is humorous at best, but there is some confirmation of his LinkedIn job history available via Google search.  IE, he may actually be who he says he is, which seems to be a possibly delusional dreamer with big ideas that are likely beyond his reach.

I think it's 50/50 that this guy is in the very early stages of trying to launch an ASIC (the other 50 being that it's a simple scam)
I think it's 99999/1 that he fails.

I would concur with this.  The only way it will work is if the guy is able to pull together over $2M in funding and a team of at least 3 or 4 very good chip designers.  (Could maybe be done with 2 very experienced people, but would probably require a team of 6 or more.)  The mask set itself will be in the $1M+ range for 20nm. 

This ignores the fact that 20nm is apparently not available until after his "delivery date".  If I cared, I could check with our fab people on TSMC's real schedule.  But I don't care.
93  Bitcoin / Pools / Re: [5.5TH/s] Ozcoin Pooled Mining |DGM 1%|PoT 2%|PPS 3%|Stratum+VarDiff port 80 on: March 25, 2013, 12:54:00 AM
I would like to continue to mine my measly 0.9GH/s on Ozcoin but I cannot get the configuration right after the changes made roughly 9 hours ago.  

Using cgminer 2.11.3 on http://us.ozco.in:8332    (I was on port 80.)

Since my hashrate was so small I was not using stratum and I was under the impression I would not be forced to do so.  Perhaps that is my problem.  Do I have to use stratum on Ozcoin now?

Edit:  Do I need to use "stratum+tcp://" instead of "http://" ?
94  Bitcoin / Bitcoin Discussion / Re: Bitcoin and me (Hal Finney) on: March 22, 2013, 04:01:31 PM
Hal,

Thank you for all you have contributed to bitcoin and for sharing your story.  Very inspiring.
95  Bitcoin / Hardware / Re: Public request to all custom ASIC manufacturers - chip photos on: March 19, 2013, 01:30:40 AM
Another 'tired' chips under microscope site, but it
Looks more like they are prepared to 'rip off' the ASIC designs.

"We are also building an in-house ASIC prototyping line based on maskless lithography and silicon-on-sapphire wafers. Our design goal here is quick turnaround time and reduced number of technological steps rather than top performance or high wafer throughput. "


^^ This.  If I were a bitcoin ASIC designer, I'd send them a photo of my chip, but not a chip.
96  Bitcoin / Mining software (miners) / Re: CGMINER GPU FPGA overc monit fanspd RPC stratum linux/windws/osx/mip/r-pi 2.11.3 on: March 17, 2013, 01:19:15 PM
I am NOT going to say this again. Everyone experiment for yourselves. Scrypt tuning is witchcraft and you need to find the right incantation for your device and sacrifice the correct number of goats while facing towards your holy centre.

Can you please add this to the README (that nobody reads)?   Grin
97  Other / CPU/GPU Bitcoin mining hardware / Re: Chips lovers, I though you might enjoy "opening microchips and what's inside?" on: March 14, 2013, 07:55:12 PM
For the record:  From my decades of experience with chip design, I believe BFL's ASIC is real and all that has been stated publicly (including the crappy lengthy delays) is consistent with typical teething pains accompanying a first effort in such a project - especially from a company that has never done it before.  If it is in fact a hoax / scam, then they have REALLY done their homework in generating photos and statements consistent enough to fool me.  However, I am confident that it is real.

Disclaimer: I own one BFL Single (FPGA) and have one SC Single (ASIC) on order.  Although I'm obviously biased, I try very hard to remove that bias from any technical evaluation.
98  Other / CPU/GPU Bitcoin mining hardware / Re: Chips lovers, I though you might enjoy "opening microchips and what's inside?" on: March 14, 2013, 07:43:37 PM
Color me confused!

If this is a chip...



Then this is just a part of the chip.



Yet, weren't we led to believe that the following is a chip?




Different chip designs look different - just like different motherboard designs look different.  

Of your 3 photos, I believe the last one is actually a CAD software output of an earlier revision of the BFL ASIC.  I think that was the version for he QFN package.  The newest one that should ship "within 4 to 6 weeks" has a different top layer metal for the BGA package but almost certainly looks the same / similar to this photo if you remove the top layer.
99  Bitcoin / Mining / Re: Home made bitcoin miner... on: March 14, 2013, 04:14:30 PM
opentoe: this an Actel ProASIC3 chip. And despite the marketing name, this is an FPGA, not an ASIC: http://www.actel.com/products/pa3/default.aspx Based on the VQFP-100 package it has got to be an A3P030, A3P060, A3P125, or A3P250.

It is absolutely not made specifically for Bitcoin mining. There is no way whatsoever that this generic 130nm FPGA beats the power efficiency of the 40nm Arria II FPGA (BFL Mini Rig) or 45nm Spartan6 FPGA (in pretty much all other Bitcoin miners).

Sorry for the false accusation of attempting to scam. It turns out you were merely ignorant of what hardware type you had.

I agree.  5MH/s maybe, but not 5GH/s.  In my opinion, this is probably not worth investigating further.  Of course, it would be great to be proven wrong.  But I'm doubtful.
100  Bitcoin / Bitcoin Discussion / Re: [ANN] BitSafe Hardware Wallet Now Shipping on: March 14, 2013, 03:23:15 AM
This looks like a great product.  I have only 1 question:

What happens to my keys & bitcoins if I loose the device or it stops working because my dog chewed on it?
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