Swedish ASIC miner company kncminer.com - page 231.

xstr8guy

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Glow Stick Dance!

Quote from: Ollie on September 28, 2014, 09:39:28 AM

Raspberry pi performance should not be the issue, since Bitfury made miners with hundreds of gigahashes using raspberry controller. Software can be causing low performance though.

Titans put a hell of a lot more stress on the CPU than old Bitfury rigs. BBB's are the way to go for more powerful miners.

Also be sure to have a good SD card. My Bitfury rigs had constant corruption problems with the crappy SD cards that Bitfury supplied. Once I replaced them with high quality cards, my problems went away.

Tigggger

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Quote from: lucazane on September 28, 2014, 03:11:13 PM

.... mining fast coin => you will loose a lot of hashrate.

You can just mine coin like litecoin or feathercoin

this explain why the Titan doesn't work well on multipool

This has been true for every piece of KNC Hardware.

Whereas everything else I own handles blocks changes without missing a beat, KNC hardware slows to a crawl for a good 10 seconds every time there is a new block or a request for a work restart.

Not sure what they've done to cause this, why it's never been looked at, and why nothing else does the same, but it's been like this since the jupiter.

loktang1125

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Quote from: Sitarow on September 28, 2014, 02:48:47 PM

Quote from: loktang1125 on September 28, 2014, 02:18:28 PM

4 TITANS : two on 330mhs and two on 220mhs

That's two 220mhs actually running fine, but they just keep restart makes a avg hash 220hash shown on pool

what pool?

changed to coinotron
1 of 4 titans cant even connect to wemineltc
i have no idea why

lucazane

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watching the BFG log, I found :

Quote

[2014-09-28 20:07:51] Stratum from pool 0 detected new block
[2014-09-28 20:07:53] KNC 0: Flushing stale works (New work)
[2014-09-28 20:07:55] KNC 1: Flushing stale works (New work)
[2014-09-28 20:07:56] KNC 2: Flushing stale works (New work)
[2014-09-28 20:07:58] KNC 3: Flushing stale works (New work)

The last asic is hashing 7 seconds bad data cause he don't know fast enought the new block

and looking at the speed, confirm that :

Quote

KNC 0: | 75.44/72.79/72.22Mh/s | A: 61 R:1+0(1.6%) HW:20/1.0%
KNC 1: | 66.69/65.84/65.11Mh/s | A: 51 R:1+0(1.9%) HW:39/2.1%
KNC 2: | 67.52/63.71/60.76Mh/s | A: 54 R:3+0(5.3%) HW: 6/.33%
KNC 3: | 59.50/59.40/58.27Mh/s | A: 65 R:2+0(3.0%) HW:13/.77%

.... mining fast coin => you will loose a lot of hashrate.

You can just mine coin like litecoin or feathercoin

this explain why the Titan doesn't work well on multipool

Sitarow

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Quote from: loktang1125 on September 28, 2014, 02:18:28 PM

4 TITANS : two on 330mhs and two on 220mhs

That's two 220mhs actually running fine, but they just keep restart makes a avg hash 220hash shown on pool

what pool?

samsonn25

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Quote from: Meizirkki on September 28, 2014, 09:58:10 AM

Quote from: Ollie on September 28, 2014, 09:39:28 AM

Raspberry pi performance should not be the issue, since Bitfury made miners with hundreds of gigahashes using raspberry controller. Software can be causing low performance though.

Raspberry Pi is just barely powerful enough to run a full bank of Bitfury cards. And bitfury's design is as simple as it gets. IIRC connecting to an active miner for monitoring was enough to cause minor performance issues. Raspberry Pi is also known for corrupting it's SD card very quickly. So in every way it's a very poor choice for a controller.

Agree. It better for budget man on simple system.

loktang1125

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4 TITANS : two on 330mhs and two on 220mhs

That's two 220mhs actually running fine, but they just keep restart makes a avg hash 220hash shown on pool

RHA

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Can anyone provide me with a Titan SD card image? Preferably with 1.01 firmware.
(Made after a factory settings reset or at least with known password used, or else it'll be of no use.)
It looks like my device needs card reflashing, but there is no card image at KnCMiner pages.
An image can be created with e.g. Win32DiskImager.

Searing

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Clueless!

Quote from: poodle63 on September 28, 2014, 10:16:35 AM

Guess Titan is over clocked, according to reply from other people, it looks like 225mh is the best frequency for Titan cubes, could be some yield issue on the chip, so hashing drop suddenly is the sign.

Guess firmware can't improvement too much of hashing power, could be a flaw they didnt detect under tap out Titan chip, so hope this is not the root cause of Titan, otherwise we all screwed in the end.

well if it is 225 mh is tops kinda thing they may compensate imho...if it is just a flaky frankenjupiter DIY kit kinda 300mh problems from KNC's point of view we will eat it all imho

at this point I don't know which if any would be worse? the same?

this looks like the death of even KNC's fantasy of scrypt-N unless they are delusional (lets see rich as hell in 1 year..power mad...naw)

vipgelsi

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Quote from: s1gs3gv on September 28, 2014, 10:05:29 AM

It is clear now why KNC didn't ship a 5 cube Titan ...

But they are mining for themself with no problem i bet.

s1gs3gv

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ex uno plures

Quote from: poodle63 on September 28, 2014, 10:16:35 AM

we all screwed in the end.

Au contraire, we were all screwed from the beginning.

poodle63

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Leading Crypto Sports Betting & Casino Platform

Guess Titan is over clocked, according to reply from other people, it looks like 225mh is the best frequency for Titan cubes, could be some yield issue on the chip, so hashing drop suddenly is the sign.

Guess firmware can't improvement too much of hashing power, could be a flaw they didnt detect under tap out Titan chip, so hope this is not the root cause of Titan, otherwise we all screwed in the end.

Test User

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Miner and technician

Quote from: Ollie on September 28, 2014, 09:39:28 AM

Raspberry pi performance should not be the issue, since Bitfury made miners with hundreds of gigahashes using raspberry controller. Software can be causing low performance though.

Raspberry Pi performance may be the problem. The Pi has to check the hash from the cubes.

SHA256 is a very easy hash to calculate. Scrypt is much harder. Raspberry pi takes about 30,000 times longer for a scrypt check, than a SHA256 check.

s1gs3gv

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ex uno plures

It is clear now why KNC didn't ship a 5 cube Titan ...

poodle63

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Leading Crypto Sports Betting & Casino Platform

So, after reading reply from other people, I got few questions,
First question is which pool is better for Titan or big ASIC scrypt miner?
Second question is how many Titan ship per day, and would knc be able to solve firmware issues?
Third question is would knc open source their firmware for us, and why are they choose pi not BBB this time, I don't get it, too risky.

Meizirkki

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Quote from: Ollie on September 28, 2014, 09:39:28 AM

Raspberry pi performance should not be the issue, since Bitfury made miners with hundreds of gigahashes using raspberry controller. Software can be causing low performance though.

Raspberry Pi is just barely powerful enough to run a full bank of Bitfury cards. And bitfury's design is as simple as it gets. IIRC connecting to an active miner for monitoring was enough to cause minor performance issues. Raspberry Pi is also known for corrupting it's SD card very quickly. So in every way it's a very poor choice for a controller.

s1gs3gv

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ex uno plures

Quote from: Elenelen on September 28, 2014, 09:28:26 AM

No the don't. But the controller has it's own issues: if 4 Cubes are connected then you cannot open the Advanced-page anymore, because it times out (after 50 seconds).

I don't know if you would find it useful, but some browsers like Firefox allow you to set the default timeout value. Changing this to a higher value would give the advanced page more time to load. Instructions on setting the network timeout for Firefox are here : http://superuser.com/questions/303217/how-can-i-change-the-connection-timeout-setting-in-firefox

Searing

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Clueless!

Quote from: Elenelen on September 28, 2014, 09:28:26 AM

Quote from: s1gs3gv on September 28, 2014, 08:59:07 AM

Quote from: Elenelen on September 28, 2014, 06:04:47 AM

I run with 2 cubes without problems (nearly zero rejects, nearly zero hardware errors, and 155 Mh/s). But two faulty cubes. one gives that error above, the other gives "failed to set workstate" and both dump BGFminer within a few minutes.

Elenelen, do either of your 2 faulty cubes work ok when used alone on the controller ?

No the don't. But the controller has it's own issues: if 4 Cubes are connected then you cannot open the Advanced-page anymore, because it times out (after 50 seconds). If 3 cubes are connected the advanced-page pops up after 30 seconds.

threads on www.kncminer.com forums that it is looking like part of the many problems with the Titan is the raspberry Pi just may not be up to the task of 4 cubes

or worse....

good thing KNC is motivated to help us with the arctic cloud and their data halls and the 150 to 200 million dollars they have made in the last year...right

the silence from KNC is deafening....having PTSD flashbacks to BFL

sheesh

Ollie

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Raspberry pi performance should not be the issue, since Bitfury made miners with hundreds of gigahashes using raspberry controller. Software can be causing low performance though.

lucazane

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KnC need to compensate the buyer of the titan.

Topic: Swedish ASIC miner company kncminer.com - page 231. (Read 3049515 times)