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Author Topic: Algorithmically placed FPGA miner: 255MH/s/chip, supports all known boards  (Read 109612 times)
BR0KK
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May 21, 2012, 12:19:13 PM
 #221

aww 10 Days .... Cheesy

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May 21, 2012, 12:52:16 PM
 #222

What a tease. You'd better release something that goes 300 mhash/s at 10 watts, if you're going to keep us in suspense like this. Tongue

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May 21, 2012, 07:08:52 PM
 #223

Somebody at BFL just shat his pants.

False, but you did figure out what this is a countdown for Tongue

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May 21, 2012, 08:28:34 PM
 #224


Who are you? Apple or Samsung?

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May 21, 2012, 08:36:05 PM
 #225

It's just a countdown to his birthday. Cake and grief counseling will be available.
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May 21, 2012, 08:38:37 PM
 #226

I wonder if existing Spartan6 boards people have will require hardware changes for this firmware, like power related circuitry

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May 21, 2012, 09:13:08 PM
 #227

I wonder if existing Spartan6 boards people have will require hardware changes for this firmware, like power related circuitry

He has already said that the ZTEX boards, including the latest and greatest 1.15y, will draw more power using his 1 1/2 miners (or 3 half-miners) compared to the original 210 MH/s ZTEX bitstream, and since they all have a 8 Amp DC/DC converter, the headroom is small. Just HOW small, I don't know.
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May 21, 2012, 09:13:53 PM
 #228

i dont (hope) not than this wouldn't be good for his selling  Smiley

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May 21, 2012, 10:45:51 PM
 #229

X6500 compatibility is what interests me Smiley

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May 21, 2012, 11:17:56 PM
 #230

It's probably just counting down to the end of the month in your time zone

Hrm, I specified the time zone in the javascript code, so it should show the same countdown regardless of timezone.

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May 21, 2012, 11:34:47 PM
 #231

It's probably just counting down to the end of the month in your time zone

Hrm, I specified the time zone in the javascript code, so it should show the same countdown regardless of timezone.

Interested and watching.


TargetDate = "5/31/2012 12:00 PM GMT-7";
BackColor = "white";
ForeColor = "black";
CountActive = true;
CountStepper = -1;
LeadingZero = true;
DisplayFormat = "%%D%%d %%H%%:%%M%%:%%S%%.%%SS%%";
FinishMessage = "It is finally here!";
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May 21, 2012, 11:55:31 PM
 #232

It's probably just counting down to the end of the month in your time zone

Hrm, I specified the time zone in the javascript code, so it should show the same countdown regardless of timezone.

I was only a guess based on different people having different times.

I noticed it stops counting when I go to another window/tab in safari on iOS

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May 21, 2012, 11:59:26 PM
 #233

X6500 compatibility is what interests me Smiley

The x6500 uses regulators that are specified for 10A, and would probably work for 12-15A if there is enough airflow.
Actually we've heard reports of a case of a similar regulator surviving around 200% load for days, and that board seemed to run perfectly stable.

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May 22, 2012, 04:24:25 PM
 #234

you may want to take a look at this http://www.bitfury.org/xc6slx150.html these guys are claiming 435 mh/s per LX-150  Shocked
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May 22, 2012, 04:29:21 PM
 #235

you may want to take a look at this http://www.bitfury.org/xc6slx150.html these guys are claiming 435 mh/s per LX-150  Shocked

That seems to say on actual silicon they could only achieve 240MH/s (which is still quite good).
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May 22, 2012, 04:51:22 PM
 #236

you may want to take a look at this http://www.bitfury.org/xc6slx150.html these guys are claiming 435 mh/s per LX-150  Shocked

That seems to say on actual silicon they could only achieve 240MH/s (which is still quite good).

Very interesting read and if I am reading right they actually achieved 300MHs..

"Achieved resultThen we got following clock from Trace timing analysis tool - 2.968 ns design performance limitations. That's pretty cool - means 337 Mhz clock. You can view timing report by clicking here. And in our first prototype things seemed to work, but we have not analyzed error rates. When we have finished implementation of communication protocol with computer and measured error rates, we got bad luck, as with low error rates (below 0.5%) it functions only at 240 Mhz at core voltage 1.25 V (giving about 300 Mh/s and consuming acout 12W), and it still functions at 290 Mhz, but error rate is so high - about 85% of cores are giving errors. Also interesting detail, that if we strip and remove half of rounds, then it works at 290 Mhz well. 300 Mhz @ 1.25 V core voltage is undoable because of random hangs.

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May 22, 2012, 05:09:19 PM
 #237

you may want to take a look at this http://www.bitfury.org/xc6slx150.html these guys are claiming 435 mh/s per LX-150  Shocked

That seems to say on actual silicon they could only achieve 240MH/s (which is still quite good).

Very interesting read and if I am reading right they actually achieved 300MHs..

"Achieved resultThen we got following clock from Trace timing analysis tool - 2.968 ns design performance limitations. That's pretty cool - means 337 Mhz clock. You can view timing report by clicking here. And in our first prototype things seemed to work, but we have not analyzed error rates. When we have finished implementation of communication protocol with computer and measured error rates, we got bad luck, as with low error rates (below 0.5%) it functions only at 240 Mhz at core voltage 1.25 V (giving about 300 Mh/s and consuming acout 12W), and it still functions at 290 Mhz, but error rate is so high - about 85% of cores are giving errors. Also interesting detail, that if we strip and remove half of rounds, then it works at 290 Mhz well. 300 Mhz @ 1.25 V core voltage is undoable because of random hangs.

"
Yeah, you're right there. I grabbed the wrong number there. I would love to see independent verification of any of these results. 300MH/s is 50% more than anyone else is currently running. At least with eldentyrell's there's been a long and incremental development time that lends credence to it. 300MH/s is a huge number.
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May 22, 2012, 05:20:10 PM
 #238

on the personal front, i suggest stop doing any effort on these pipelined architecture.

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May 22, 2012, 05:25:44 PM
 #239

I would love to see independent verification of any of these results. 300MH/s is 50% more than anyone else is currently running. At least with eldentyrell's there's been a long and incremental development time that lends credence to it. 300MH/s is a huge number.

aye, +100 there.

on the personal front, i suggest stop doing any effort on these pipelined architecture.

wha chew talkin' bout, Willis?

If you're not excited by the idea of being an early adopter 'now', then you should come back in three or four years and either tell us "Told you it'd never work!" or join what should, by then, be a much more stable and easier-to-use system. - GA
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May 22, 2012, 05:27:21 PM
 #240

you may want to take a look at this http://www.bitfury.org/xc6slx150.html these guys are claiming 435 mh/s per LX-150  Shocked

That seems to say on actual silicon they could only achieve 240MH/s (which is still quite good).

Very interesting read and if I am reading right they actually achieved 300MHs..

"Achieved resultThen we got following clock from Trace timing analysis tool - 2.968 ns design performance limitations. That's pretty cool - means 337 Mhz clock. You can view timing report by clicking here. And in our first prototype things seemed to work, but we have not analyzed error rates. When we have finished implementation of communication protocol with computer and measured error rates, we got bad luck, as with low error rates (below 0.5%) it functions only at 240 Mhz at core voltage 1.25 V (giving about 300 Mh/s and consuming acout 12W), and it still functions at 290 Mhz, but error rate is so high - about 85% of cores are giving errors. Also interesting detail, that if we strip and remove half of rounds, then it works at 290 Mhz well. 300 Mhz @ 1.25 V core voltage is undoable because of random hangs.

"
"One of our test chips worked at 300 Mhz at 1.5 V core, which is significantly above datasheet maximum allowed core voltage."
That's 375 MHash/sec

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