Swedish ASIC miner company kncminer.com

[Puppet]

I think the interesting point that hasn't been raised yet (as far as I've seen in this epic thread) is how KNC have binned their chips, if at all. BFL have 2 chips per Jalapeno and each can be (and usually seems to be) of a different quality in terms of hash rate and they must manually balance which chips get put on which board to achieve the advertised hashrate. Bigger boards have way more chips and it then becomes a classic partitioning problem.

Very good point, AFAIK, the chips are currently not binned at all. Not even tested for functioning (neither wafer probing or final chip testing) before being soldered on the PCB. Thats a huge mistake IMO, one that was pointed out months ago. They could be testing/binning the completed modules, but Ive not heard a word on that.

[Searing]

WELL this is kinda off topic..but in regards to the KNC miner issues...we may be complaining about a brush fire in back and are unaware that over the hill ROME is burning

not good imho

http://thenextweb.com/insider/2013/10/11/payments-company-dwolla-abruptly-announces-the-closure-of-its-bitcoin-service/

ie dwolla-abruptly-announces-the-closure-of-its-bitcoin-service



er ...where the heck did I put my fiddle?


Searing

[The Avenger]

Second question: What is the minimum guaranteed hashrate of a Jupiter?

As advertised:
"550+ Gh/s per device"

(from https://www.kncminer.com/categories/miners)

They could worm out of it by saying that this is projected hashrate for November delivery, but remember the launch video?

http://www.youtube.com/watch?v=JFOcI8nK2xI which is currently linked on the front page of their website. This is what they are claiming they are shipping "The actual hashing performance" to quote Sam. And "It's not 400GH/s". "It's a 500 machine"

Notice the massive X through the 400GH/s.



So forget 400GH/s.

Anything less than the 500GH/s and they are misrepresenting, which I'm fairly sure would be a criminal offence.

[Searing]

Second question: What is the minimum guaranteed hashrate of a Jupiter?

As advertised:
"550+ Gh/s per device"

(from https://www.kncminer.com/categories/miners)

Anything less than that and they are misrepresenting, which I'm fairly sure would be a criminal offence.

yeah they would have probably been "golden" if they simply said we have 'stock units" that will do 400gh ....we have some experimental mods that look promising that have gotten as much as 550gh depending on the quality of your chips" we will make this available to all to play with....but in an effort to get the units out the door at this time we stand by the 400gh or 150gh more then we originally thought in April......we will have a place on the forums for these "experimental upgrades" all are welcome to try asap.


its all on how you "present stuff" imho

my 2c worth

Searing

[sickpig]

I don't want to complain too much as I am a DAY1 customer that did receive one Saturn at home and another one
online hashing at the KnC datacenter. I also received my (first ?) bonus/compensation from KnC.
But I also thought I post this comparision (as reported by Bitminter):


http://postimg.org/image/82x69elyj/

bad!

If I were in your shoes I would try bertmod. it' not a real fw upgrade, it doesn't require a reboot, it just replace the status web page with a new
one with a lot of more info. (see: http://forum.kncminer.com/forum/main-category/main-forum/6183-bertmod-0-2-unofficial-firmware-mod-feedback-thread)
if you think it's too risky... the .bin file is just a tar.gz, extract it, copy asic_status.pl on your miner and then run:

Code:

perl ./asic_status.pl > status.html

My Saturn unit at home runs 0.93, case closed (but optimized the flaps/wings inside the case = bent them to not disturb the airflow)
and uses 270W (at 230V).

do you mind to up a pic of your internal airflow optimization?

[trepex]

do you mind to up a pic of your internal airflow optimization?

Sure.
This picture was taken with an iphone through the closed case, sorry for the bad quality.
I don't want to open my case at the moment.


http://s14.postimg.org/tl4834ak1/Photo_11_10_13_12_26_23.jpg

Remember, it makes only sense for Saturns. Those flaps/wings (how would a native speaker call them?)
make much sense for a Jupiter!

[sickpig]

do you mind to up a pic of your internal airflow optimization?

Sure.
This picture was taken with an iphone through the closed case, sorry for the bad quality.
I don't want to open my case at the moment.

http://s14.postimg.org/tl4834ak1/Photo_11_10_13_12_26_23.jpg

Remember, it makes only sense for Saturns. Those flaps/wings (how would a native speaker call them?)
make much sense for a Jupiter!

thanks for the pic !

[Elenelen]

I think the interesting point that hasn't been raised yet (as far as I've seen in this epic thread) is how KNC have binned their chips, if at all. BFL have 2 chips per Jalapeno and each can be (and usually seems to be) of a different quality in terms of hash rate and they must manually balance which chips get put on which board to achieve the advertised hashrate. Bigger boards have way more chips and it then becomes a classic partitioning problem.

Very good point, AFAIK, the chips are currently not binned at all. Not even tested for functioning (neither wafer probing or final chip testing) before being soldered on the PCB. Thats a huge mistake IMO, one that was pointed out months ago. They could be testing/binning the completed modules, but Ive not heard a word on that.

I just installed "bertmod 0.2.1 by uski" on my bad performing Jupiter (only 380 gh/s). And shows two Asci-chips (2 and 3) with lots of disabled cores:

ASIC_0
   Die_0: 48 cores on, 0 cores off
   Die_1: 48 cores on, 0 cores off
   Die_2: 46 on, 2 off
   Die_3: 46 on, 2 off   >> 98 %
ASIC_1
   Die_0: 48 on, 0 off
   Die_1: 48 on, 0 off
   Die_2: 48 on, 0 off
   Die_3: 48 on, 0 off  >> 100%
ASIC_2
   Die_0: 47 on, 1 off
   Die_1: 47 on, 1 off
   Die_2: 19 on, 29 off
   Die_3: 47 on, 1 off  >> 83%
ASIC_2
   Die_0: 48 on, 0 off
   Die_1: 48 on, 0 off
   Die_2: 3 on, 45 off
   Die_3: 48 on, 0 off  >> 76%

In total there are 81 cores off. That's about 10.5 % not working.... This while I'm only hashing 412 Ghs at the moment.  As 412 / 550 is about 25% less performance, I guess that there is quite some overhead in the FGPA management and Firmware to "steamline" a stable system (about 15% additional loss)....

[hagbase]

Firmware: 0.94
PSU: Cougar S700
Cooling: default + 2x Noctua NF-S12B FLX




Any adivce on PSU?

700 plenty... you might try raise your diff a bit more...  like 250

Ok raised diff to 256, working fine with 260GH/s.

Just asking for PSU advice cause Cougar S700 is silver certified and my  saturn wasn't stable before connecting two Noctua Fans to PSU(sucking air out)
KnCs PSU specs say, PSU must be gold certified, maybe thats why i'm getting so much HW Errors?
I'm also looking foward to buy 2 upgrade modules next year so i need to change PSU anyway.

[jelin1984]

i think tha something wrong with firmware
which
cause CORE OFF

does anyone have any answer from knc from that problem?

[Searing]

i think tha something wrong with firmware
which
cause CORE OFF

does anyone have any answer from knc from that problem?

bitcoinorama had a prev post that knc thinks it is a firmware problem and are working on it look at past threads

[-Redacted-]

Firmware: 0.94
PSU: Cougar S700
Cooling: default + 2x Noctua NF-S12B FLX




Any adivce on PSU?

700 plenty... you might try raise your diff a bit more...  like 250

Ok raised diff to 256, working fine with 260GH/s.

Just asking for PSU advice cause Cougar S700 is silver certified and my  saturn wasn't stable before connecting two Noctua Fans to PSU(sucking air out)
KnCs PSU specs say, PSU must be gold certified, maybe thats why i'm getting so much HW Errors?
I'm also looking foward to buy 2 upgrade modules next year so i need to change PSU anyway.

Silver, Gold, etc. refer to PSU internal efficiency.  Wouldn't have anything to do with H/W errors.

Suppose you have a 500 W power supply, a system that pulls 250 W at full load,  running at full load all the time.

Power drawn from the wall in an 8 hour day:

Basic - 312.5 W
Bronze - 304.9 W
Silver - 294.1 W
Gold - 277.8 W
Platinum - 271.7 W

That means that over basic you save 7.6 W/h with bronze, 18.4 W/h with silver, 34.7 W/h with gold, and 40.8 W/h with platinum. With 8 hours a day at full load that comes out to be 1.82 kWh, 4.42 kWh, 8.33 kWh, and 9.79 kWh saved per month with bronze, silver, gold, and platinum respectively.

At 0.15 per kWh, and a 24 hour day, you'd save $52.86 a year with a platinum supply versus a non-rated supply.

[trepex]

Code:

perl ./asic_status.pl > status.html

Thanks for the info about that bertmod.bin file being just a tar.gz!
I felt much better only running that perl script.

Hint to the development group: bring out a pure ASCII version!

So my home Saturn looks OK, I will check why there is a temperature and performance difference.



I have no access to the slower Saturn hosted at KnC. So I currently can not say anything about
the temperature and disabled cores about that one.

[Nemo1024]

AND, why some ppls hosted rigs have been pointed to provide KNCs wallet with coins?

Source? Otherwise don't spread FUD.

I am actually glad I have a late hosted order. Hopefully all the kinks have been ironed out by then.

All early orders (if they did their pre-purchase research properly) basically signed up to be guinea pigs in return for a certain probability that everything worked perfectly from the start.

And as anyone working with IT knows, the chances of that are minimal (enter the famous Murphy's Law). The fact that KnC managed to have a product that is working over the initial spec in at least 80% of the times on their first try is monumental.

[operador]

^Yeah, 550+ yeah, my ass... I am hosted and stuck at 100 average....

[edgar]

AND, why some ppls hosted rigs have been pointed to provide KNCs wallet with coins?

Source? Otherwise don't spread FUD.

I am actually glad I have a late hosted order. Hopefully all the kinks have been ironed out by then.

All early orders (if they did their pre-purchase research properly) basically signed up to be guinea pigs in return for a certain probability that everything worked perfectly from the start.

And as anyone working with IT knows, the chances of that are minimal (enter the famous Murphy's Law). The fact that KnC managed to have a product that is working over the initial spec in at least 80% of the times on their first try is monumental.

please keep up.

im not about to go sifting through thousands of posts just to reiterate what more than one HOSTED miner has already reported.

knc may well have broken some tech records but facts are facts, just because you have not read them does not make them irrelevant.

and there are PLENTY of early orders yet to arrive, in fact it seems we (they) have stalled out at around 2000.

do you require sauce with that also to make it less 'FUDdy'

E2A - thanks for not ignoring 1 of my several questions, though i wasnt really asking you its nice to not be ignored.

i half agree with the later orders maybe having the kinks ironed out - the other half of me thinks that maybe all the good chips will be used in house while we end up with the dregs...

[thomashrev89]

^Yeah, 550+ yeah, my ass... I am hosted and stuck at 100 average....

are you reading speed through pool? i use slush and it showed 30 at the start and slowly ramped up to 450 after about 10 hours.
even tho the miner ran at 400-450 from the beginning.

[The Avenger]

My post from kncforum.

    Miner Type: Jupiter
    CGMiner Hash Rate (average): 445Gh/s
    CGMiner HW Error : 25-30%
    Firmware Version: .94
    Uptime: 12 Hour
    Case: Off
    4 VRM per board

Bertmod shows input voltage 11.8-12 V, output voltage 0.89-0.93 V, output current 45-58 W

This is how i feel.

Pahh haha haa! That made me laugh  

[hagbase]

Firmware: 0.94
PSU: Cougar S700
Cooling: default + 2x Noctua NF-S12B FLX




Any adivce on PSU?

700 plenty... you might try raise your diff a bit more...  like 250

Ok raised diff to 256, working fine with 260GH/s.

Just asking for PSU advice cause Cougar S700 is silver certified and my  saturn wasn't stable before connecting two Noctua Fans to PSU(sucking air out)
KnCs PSU specs say, PSU must be gold certified, maybe thats why i'm getting so much HW Errors?
I'm also looking foward to buy 2 upgrade modules next year so i need to change PSU anyway.

Silver, Gold, etc. refer to PSU internal efficiency.  Wouldn't have anything to do with H/W errors.

Suppose you have a 500 W power supply, a system that pulls 250 W at full load,  running at full load all the time.

Power drawn from the wall in an 8 hour day:

Basic - 312.5 W
Bronze - 304.9 W
Silver - 294.1 W
Gold - 277.8 W
Platinum - 271.7 W

That means that over basic you save 7.6 W/h with bronze, 18.4 W/h with silver, 34.7 W/h with gold, and 40.8 W/h with platinum. With 8 hours a day at full load that comes out to be 1.82 kWh, 4.42 kWh, 8.33 kWh, and 9.79 kWh saved per month with bronze, silver, gold, and platinum respectively.

At 0.15 per kWh, and a 24 hour day, you'd save $52.86 a year with a platinum supply versus a non-rated supply.

I'm paying 0,47$ or 0,35€ but thats not why i'm asking for adivce, its all about this: "A power supply (PSU) certified as 80+ Gold (high quality power with low variations)"

[operador]

^Yeah, 550+ yeah, my ass... I am hosted and stuck at 100 average....

are you reading speed through pool? i use slush and it showed 30 at the start and slowly ramped up to 450 after about 10 hours.

I tried, eligius then 50btc, both stuck at 100 GH/s, maybe I'll try slush...
Congrats on getting 450, you're one of the lucky few