Topic: KNC ASIC Users Thread & FAQ - page 2. (Read 8745 times)

Thank you! The good news is that has been stable for at least 20 minutes now. The bad news is that it now runs at ~230Gh/s instead of ~275Gh/s for the 10 minutes it would run before throwing endless FPGA core 21 errors. I hope they sort this out soon.

Try this:
downgrade to 0.90 and upgrade than to 0.94, do a hard reset, wait till miner is online, maybe u'll get an error message pool config is wrong or something like that, connect with putty and restart cgminer/config.

I've mounted two Noctua NF-S12B FLX Fans sucking air out to streamline the airflow in case.

Does anyone know why my Saturn stops hashing after 15 minutes???! This is ridiculous, it will hash @275-280 and then cgminer will start throwing FPGA errors and then either die completely or turn off a core and run @170ish Gh/s, but its never consistent. I've used 3 different PSU's and used all of the available firmware versions (mine came with 0.91).

What the F??! Anyone have any insight, or at least know how I can script cgminer via Putty to restart every 10 minutes? The case is off and when it hashes it hashes fine, but then, it just....dies. What gives?!?!

Reporting my experience so far:

I have one of the duds.  v0.9.4, case off, box fan.  Only 440 GH/s, ~16% error rate, and 900W.

Using Bertmod 0.2 I was able to look at the voltages and such.  Looks like my unit is being overvolted to 0.92V on all the modules.  As far as I can tell the nominal voltage is 0.7V, so I think their firmware is choosing to overvolt to compensate for bad chip(s).  So all the dies are pulling 50 Amps, driving my total power usage to 900W.

I suspect that not all of the dies are bad; only some.  But the firmware is indifferent to the particular needs of each die, and simply overvolts all of them to keep up the hashrate.  If that's the case, I could see a future update which only overvolts the under-performing dies, reducing my overall power consumption.

It's better than nothing, and I sincerely understand that KNC's schedule was extraordinarily tight.  I commend them for meeting their goals on such an ambitious project.  It's still disappointing to see some people getting good units, and others getting bad units, though

EDIT: I poked around with the firmware.  It seems that I was wrong about it setting the voltage to 0.9V automatically.  Rather, it looks like it's that way from the factory; the firmware isn't setting the voltage.  Though the screenshot here shows someone at 0.7V.  So for whatever reason KNC is shipping some units at 0.7V and some at 0.9V.

On top of that, unless the DC/DC modules they're using have changed, these are only rated for 40A.  Mine are pushing 50A.  ...

I did discover, though, that it's possible to digitally tweak the voltage.  Perhaps a future firmware upgrade will take advantage of that.  I don't have the balls to try it myself manually.

Oh no...all my Jupiter has been stolen!!!  I shouldn't have used p2pool.... Oh wait, back to reality, everything is good...still hashing.

The pool has your IP.  That is more than enough.

God help you if you use P2Pool.

According to this post on the KnC miners forum, there are users interested in using MultiMiner with their KnC miners.

Any of you lucky folks feel like testing the Stratum Proxy feature in MultiMiner to see if it works with your KnC miner? It currently works well with Erupter Blades and I'm curious to see if it will work with KnC miners.

First, download and run MultiMiner. Go into the Settings and choose bfgminer as the backend miner. Then click Advanced backend miner settings and enable the Stratum Proxy setting.



This will cause a "virtual" device to show in MultiMiner which you can then use to configure coins, pools, failover, etc.

Then you should be able to configure your KnC miner to use the IP address and port of the Stratum Proxy configured above.

Again it works with the Blade miners and I am curious to see if it works with the KnC hardware as well. Thanks in advance if anyone feels like having a play and leaving some feedback!

Good to know, I had the same problems on Eligius.

Firmware .94 is a WIN was having multi probs couldn't run .92-.93 etc... Now it seems solid at 470-480!! not to bad was hoping to have a full on half terrahash of power but this is nice considering I paid for a 350-400ghs machine?

I'm only using 535 watts, it spikes to 555w at CG start but then drops slow to settle at 535. Is this normal? I'm hearing people saying they're running 850watts?! I have a Corsair HX850 and the cores are at 44c to 35c. I KNOW this thing can push a LOT more.

Good job KNC but lets unleash this thing in the next firmware.

EDIT: FW .94 not winning anymore, It slow dies after a few hr.

thanks for the info/pointer ckolivas !

edit: they've just released a new fiw version (.94) hopefully they have fixed that. 

Read from here onwards:
https://bitcointalksearch.org/topic/m.3294238

Has anyone an idea why Jupiters and p2pool don't like eachother?
Mine is operated by a third person because I can't take care on it my own. But it's delivering only 300 GH/sec because cgminer takes often some thinging breaks. On other pools it works fine so far...

New firmware out...

this is precisely what's happening to me. stick with 0.91 cause .92/.93 cause cgminer to restart very frequently

My Jupiter won't run the .92 or .93 firmware it just causes CGminer to crash over and over. I've found .91 to be the most stable and fast avg. 460ghs@535 watts and guys get a meter so you can see when you are hashing, It's been a life saver. Using 50btc.com pool

I think the main problem we're all having is that KNC in their infinite wisdom spiked(maybe to harsh) almost every Jupiter with 1 lower grade unit you can see in the one I have 3 units that have "1" stickers on them and the HOT one thats causing issues has a "3". Our machines can only hash as fast as our worst unit right now. Other company sell by grade as KNC should start doing if they can't solve this with a firmware update.

P.S. Can someone post a cheat sheet on cgminer commands ur using? I'm not a linux noob just cgminer and this OS on Jupiter. Basics start, stop maybe add redundancy pools if KNC does not in FW .94

Hi guys I have a Jupiter and have been around the forums a long while 1yr... new name under VPN.

OK how do you mine with a VPN? Easy get an old PC load it with PFsense and use openvpn to route all traffic through the VPN. Really any linux will do. Search engine skills required for this task yet not to hard to pull off. Can do the same trick with TOR using linux it's called a transparent anonymizing proxy < search that. TOR's own site has instructions how to set it up.

How to find the miner IP, log into your router 192.168.0.1 or 192.168.1.1 go to the DHCP page or the ARP table and find the IP. You can also use nmap with GUI like umit in ubuntu. Just 'sudo apt-get install umit' go into it (yes root) and type in the target box 192.168.0.* then quick detect, go!

Yeah mining through tor...no latency or connectivity issues there.  How about just not posting your IP, address, or order information....otherwise known as common sense.

Suggestion: Figure out how to mine through Tor or similar anonymizing network

Remember, several people with early batch Avalons had their homes broken into and their units stolen.

Why take unnecessary risk?

One more thing:

Thanks to all of you guys on the KNCMINER chat page.
Your assistance was vital.

Zum Wohl!

Green light up front, blue back on the beaglebone a ways.
Solid on the left, blinking on the right.