Topic: Swedish ASIC miner company kncminer.com - page 204. (Read 3049514 times)

I would advise caution sending personal/financial information to random people on the internet, even ones who claim to be Swedish lawyers...

i'll send you a email now !
people come on ! lets sue this assholes

Hi all,

My name is Henrik Ask and I represent a debt collector in Sweden called God Finans (Good Finance in english).
I just got a case from a client here in Sweden who had not got his refund on a Neptune and we helped him get his money back.

As I understand it there are more people out there that have claims on KnC Miner. Please feel free to contact me and I will be glad to help you get your money back.

You can contact me on [email protected]

Hey,  what the hell you replying to this post you didn't buy this hunk of shit called a Titan.  Furthermore, change your avatar, it makes me want to play with my chicken.   

The same disclaimer: I have no KNC products.

You need not to reboot it every 5 days unless there is a memory leak so it stops to work or respond.

Looking at the Top screenshot I see that there is a plenty of free RAM. Also, there is zero of swap space used. So I do not see the point to have a swap partition enabled at all.
To disable swap partition open the /etc/fstab file and comment out the line that has 'swap' word in it by putting the sharp character ('#') at the beginning of the line, then save file and reboot. Should you have any issues with web interface or anything else due to exactly this tuning you may re-enable swap by removing the comment.

Anyway, provided that swap is most likely not used the one thing that may actually kill the SD cards (apart from improper power off sequence) is a frequent writes the OS does to the file system when it accesses any file if the file system mounted with default options. By default the system updates last access time on each file it accesses (even for read only operation on a file). So each time when a new process is spawned its atime is updated. When any script is run by the cron job for example, all related files have their atime updated. To change that behavior you need to change the options used to mount the file system. In the same /etc/fstab file locate the lines related to the persistent file systems:


This is as I set it for my RPi that runs for more than a year inside bitfury based miner with the same SD card (a cheap one, I don't recall the brand). The place where this miner installed sometimes has power outages (once-twice a month) but even these events did not kill the SD in my miner.

The tips are greatly appreciated if the thing above helps someone.
14NY8VQTaCSFBuY4Dnrchr5ayXFRr2Nu5p

I can not understand why so slow

With Jupiter they had ship all the batch 1 until one month
And now why
They do that

Any recent Titan shipments received ?

Anybody who paid on day 2 receive a Titan yet ?

I suggest keep an eye on 'top'.
In particular the "KiB Mem:" line.
Reboot before 'free' reaches zero.

I made my observation on just 2 snapshots and noticed increased RAM usage.
It might level off in which case there is a different cause of SD corruption.

Next on the list is lack of resources.
Any load level above 1.0 is sub optimal.
Even OC'd there is a bottleneck.

I would definately NOT always have a web page open on the miner.
I'd consider not always having 'screen' running.
I'd also only run 'top' when I was gonna look, it uses resources too.


YMMV

Very interesting. I'm using a faster than class 10 card (UHS-1), a SanDisk Extreme Pro 32GB. As a Linux noob, should I just reboot the Titan every ~5 days or so? Or should I attempt to figure out how to disable the swap partition?

Disclaimer: I have no Titan but I do dabble with RPi on occasion.
I have also been using Linux for over 20 years.
Back in the days of expensive RAM, swap problems were on most peoples radar.

I think the SD corruption is caused by 'swap' partition.

Based on 2 screenshots, 2 days apart, by Prelude above, one 'might' determine...
The miner has a slow RAM leak.
I'd guess 6-8 days till it runs out of RAM
(based on the tiny sample of 2 screenshots)

If/when it runs out of RAM it starts using the swap partition for RAM storage.

With a fast 'spinning platter' hard disk swapping RAM to disk destroys performance.

With swap on an SD card expect worse performance.
Using an SD for swap could be expected to kill the SD card also.
IMneverHO

If it were mine I would eliminate the swap partition and learn to live with available RAM.
I'd consider it better that the miner just stop and reboot when RAM is exhausted.
I doubt it would keep mining anyways because swap is too slow to use as RAM.
At least it would restart without SD corruption.

A class 10 SDcard might help but they were not designed for random access usage.


YMMV

Ok, OCed mine a bit.


Only OCed the CPU from 700MHz to 900MHz. I see no point OCing the GPU and RAM for this purpose. I'm guessing OCing the RAM especially could lead to issues with the SD card?

Doesn't seem to have made much of a difference:



Advanced tab does load a bit quicker, though.

Has OCing the pi shown any benefit for you? After a few minutes of looking at top, the highest usage I saw was ~87% of the pi's CPU across all processes. Doesn't seem to be a bottleneck.



I do have 2 dead DC/DC, though.

OCing may corrupt the SD card very quickly. Be careful

Indeed, Avenger posted some epic ones (hint: there is more).


If you want to squeeze more performance out of your RPi:

1) SSH to titan as root
2) edit file '/boot/config.txt'
3) add
4) reboot
5) if you like, verify clock speed 'cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq'


*note:
max values were not stable, so I reduced them by 10%
arm_freq=1000
core_freq=500
sdram_freq=500

Now THAT'S funny shit right there!!!!!!!!!!!!!!!! 

Where were you guys back in March? 

we need a swedish muppet 'engineer' but till then this will have to do

(hey....the skill level shown in the same as a knc engineer at any rate)

(instead of bork, bork ..replace with NO ROI, NO REFUNDS, NO IDEAS OF WTF IS WRONG......so to speak)

What a joke of a company give the people there money back or deiliver the goods

ok thanks will likly go 'over kill' and also get the sandisk extreme pro 32gb class 10 for the heck of it

well lets see now on the Titan

what I have done in anticipation of the doorstop/space heater (don't laugh I live in Minnesota so at least I can get SOMETHING out of it for heat wft)

1) Instead of ONE corsair 1200i for a supposeded 1100w Titan ....I need TWO corsair 1200i power supplies instead (real wattage seems to be from 1300 to 1540w from what i see on this thread)

2) got the www.shakmods.com Y cables  setup for use with the corsair 1200i units (2 cables per psu to be safe I guess...otherwise? anyone?) so 1 per Titan plus 1 for controller

3) this euro version of the triplite 220v iso surge protector (hey they start on fire maybe there will be a surge and shut of huh?) got the euro plug (the cable that comes
with ti works fine to psu) just because one does not want to mix this up with standard 120 mickey mouse ISO's .just in case (although you can get a 220v with the
mickey mouse 220v plugs) anyway here is the link..on unit for each corsair 1200i

http://www.amazon.com/gp/product/B00006HZ4M/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

4) now I guess just to be safe gonna get the scandisk extreme class 10 32gb replacement (flash for backup) SD card

well anything else anyone can think I can do in preparation for this wonderful NO REFUND NO ROI Titan doorstop/space heater?

it will all be for naught...but best to keep busy as  the frigging alt coin miner ship sinks don't ya know (denial is all I have....sigh)

anyway any other things to watch out for let me know ...supposedly I asked the corsair rep the corsair 1200i units are supposedly? 16awg as well as the shokmods.com
y adapters....

I plan on using the Y adapter 16awg from www.shokmods.com after reading issues on here ONE LEAD of the 2 leads per Titan ..total of 4 cables 1 per psu

other then the HEAT from this beast helping the house the only other angle I MAY have people can look into is the local xcel elec utility place...WILL come
by and give me cheaper commercial rates for the electric by looking at my equip and load

needless to say 1 desktop will be up as the BIZ computer and 2 other cpu's will be up as miners with the old GPU cards and if lucky can toss on the A/C
and the Jupiter with the addition of the Titan ..I should show enough NON home use to get the rates

this may be moot in that elec costs are lower but fees are higher may be a wash...but wtf i don't plan on mining much if at all next year if i
can save 3-4c per kwh it is worth them coming over no charge and checking my equip use

just a heads up others may want to try ..but again some confusion...with increased fees for commercial use it may just be the same
also under a home plan it can be on budget (averaged out) on comercial not so much

but hey it is an angle to look into maybe ...just what they told me over the phone

well any other hints on titan besides the obvious of don't open it ...sell it on hand on ebay for 4.8k when it arrives (note the price below)

sold today from ebay

http://www.ebay.com/sch/i.html?_from=R40|R40&_nkw=knc+titan&_in_kw=1&_ex_kw=&_sacat=0&LH_Sold=1&_udlo=&_udhi=&_samilow=&_samihi=&_sadis=15&_stpos=&_sargn=-1%26saslc%3D1&_salic=1&_sanli=1&_sop=12&_dmd=1&_ipg=50&LH_Complete=1

thats all i have for angles right now (desperate thou they may seem)

Searing