Bitcoin Forum
April 25, 2019, 03:22:09 AM *
News: Latest Bitcoin Core release: 0.17.1 [Torrent]
  Home Help Search Login Register More  
  Show Posts
Pages: [1]
1  Alternate cryptocurrencies / Mining (Altcoins) / Re: DR3 keeps restarting every 30-45 mins, IDK why. on: October 07, 2018, 05:10:58 PM
yes both the rootfs and alerts on the ram are in my log (like yours)  - though im stable and fine on at 450 Hz

nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
nand: Micron MT29F2G08ABAEAWP
nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
nand: WARNING: pl35x-nand: the ECC used on your system is too weak compared to the one required by the NAND chip
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
PCI: CLS 0 bytes, default 64
Trying to unpack rootfs image as initramfs...
rootfs image is not initramfs (no cpio magic); looks like an initrd
Freeing initrd memory: 12428K (ccede000 - cdb01000)

2  Alternate cryptocurrencies / Mining (Altcoins) / Re: DR3 keeps restarting every 30-45 mins, IDK why. on: October 07, 2018, 05:42:38 AM
My (2) DR3 are hashing 2+ days since PDU reset, but i have seen my first one that i had since monday reboot on its own a few times.  I'm holding about 8.5 - 8.7 TH/s confirme by pool side too.  About 3.5 % HW errors though.

I've got frequency maxed on both at 450, Chip temps are ranging from  I:56 O:78 on worst chip, and I54 O:72 on the best.   PCB is i:45 O:63

I see the same kernel log items you do doesnt seem to be an issue  No reboots in 2+ days though.   I'm using pool to china, from USA (not the best idea but it was a quick one to get started with)

Oct  4 22:32:54 (none) local0.warn cgminer[950]: Chain 0 set_temperature_offset_value_chain_sensor
Oct  4 22:32:54 (none) local0.notice cgminer[950]: set_temperature_offset_value_chain_sensor: Chain0 Sensor0 temp offset : 05,
Oct  4 22:32:54 (none) local0.notice cgminer[950]: chain:0 local:36 remote:35
Oct  4 22:32:54 (none) local0.warn cgminer[950]: Chain 0 set_temperature_offset_value_chain_sensor
Oct  4 22:32:55 (none) local0.notice cgminer[950]: set_temperature_offset_value_chain_sensor: Chain0 Sensor0 temp offset : 06,
Oct  4 22:32:55 (none) local0.notice cgminer[950]: chain:0 local:41 remote:38
Oct  4 22:32:55 (none) local0.warn cgminer[950]: Chain 0 set_temperature_offset_value_chain_sensor
Oct  4 22:32:55 (none) local0.notice cgminer[950]: set_temperature_offset_value_chain_sensor: Chain0 Sensor1 temp offset : 03,
Oct  4 22:32:56 (none) local0.notice cgminer[950]: chain:0 local:41 remote:40
Oct  4 22:32:56 (none) local0.warn cgminer[950]: Chain 0 set_temperature_offset_value_chain_sensor
Oct  4 22:32:56 (none) local0.notice cgminer[950]: set_temperature_offset_value_chain_sensor: Chain0 Sensor1 temp offset : 04,
Oct  4 22:32:56 (none) local0.notice cgminer[950]: 1 calibration_sensor_offset_chain
Oct  4 22:32:56 (none) local0.notice cgminer[950]: chain:1 local:35 remote:29
3  Alternate cryptocurrencies / Mining (Altcoins) / Re: Bitmain launches the new AntMiner DR3 (Decred ASIC Miner) on: October 07, 2018, 01:55:05 AM
i clocked both of mine to the max at 450 Frequency, lots of HW errors - im at 3.6% HW error rate doing this at max frequency

From the web interface
1d6h34m24s   Current GH/S  8,526.48    AVG GH/S  8,531.99  

Both run about the same, (the other is showing 8.7 TH/s

Got 1 on monday and other on thursday (due to held up in customs).  No fees via Fedex for US customs on both (both were in same order too, dont know why 1 came monday and the other was delayed until thursday) - no power supplies ordered, but i can tell you bitmain is gaming the paperwork with random jibberish as to whats inside so fedex probably too confused on that aspect.  Different from prior antminer orders.

From the dashboard at (im in the US, using their china node so not optimized but didn't have time yet to setup anything else) as  i'm not on any pools that supported DCR stuff.  And as usual it wouldnt work at nicehash when i tried there first.

DCR earnings Yesterday

And its showing 17.56 TH/s avg at the pool for what it's worth and 16.5 TH/s 'real time' showing at's pool. .  So obviously my hw errors and reported speed net down to the real number they show.

I've got too many items plugged in to tell what its pulling at the wall with the over clock sorry.  But my APC PDU shows 3.92 KW with (2) of these Antminers, and 4 x Z9 mini's and about another 200 watts for a couple of cisco ASA / switches in thatrack powered on the same pdu.  

No doubt it will be a long ROI battle at the end, but getting in as early as possible leaves some hope.

But figured that info may help some.  My opinion, its a horrible power hungry box compared to other DECRED miners coming soon, but i've learned my lesson - get the very first units, or don't bother.  Then sell it on ebay about 30-45 days in... guaranteed roi that way.   Of course just because i learned my lesson doesn't mean I will follow it, i just keep running them in the farm long past when i should sell them off usually.

4  Alternate cryptocurrencies / Mining (Altcoins) / Re: 4 x Z9 mini or 1 x Z9 ? Z9 teardown on: October 02, 2018, 03:38:20 AM
One item on the cost analysis - at least if you are in the U.S., is the 25% and 2.6% tarrifs.  The Z9 will trigger the > $2500 incoming to the US tarrif check, guaranteed, and cost you a lot more.

If you buy (3) Z9 mini's at a time, per carrier (fedex/dhl/etc) and spread it out to no more than 3 at a time, you stay under the US customs $2500 import duty 'trigger'.

I know this from personal experience, with at least 6 batches of 3 x Z9 mini's over the last 35 days.  Not one has hit the 25% tarrif, 1 of the 6 hit the 2.6 % tarif (A dhl package from china vs hong kong).   I can't say with guarantee that the carriers or government wont mail me a bill 2 years from now for the 25%, but everything I've personally experienced in prior orders and the recent is stay under $2500 per 'shipment' (dont order PSU's either so its not a complete product) and you can avoid it.

Z9 full is not worth vs the z9 mini in my opinion, its cheaper for the mini's when factoring shipping tarrifs in the US at least.  But I prefer the divide and conquer, in case of hash board or other failure vs a bigger box that could all die at once.

P.s. rethink your qty (4) z9 mini plan of order, get only 3, and stay under the $2500 limit.  If you want more, order a second batch via a 2nd carrier (fedex is best, then dhl, and ups last on my list personally for using).  That will avoid things for you (based on my personal experience, i've read elsewhere others have not been so lucky as me).  but I guarantee if you exceed $2500 on any US import, you will trigger the full review and get hit.
5  Alternate cryptocurrencies / Mining (Altcoins) / GPU Benchmark - vs CPU benchmark on: September 22, 2018, 04:20:20 PM
While not alt coin 100% specific, or mining 100% specific, - i'm working on a white paper related to both so i hope the question in this spot is appropriate.

What benchmark tool (windows or linux) can anyone suggest that would provide a numeric value of output that shows both CPU and GPU that could relate to each other in the same score type.  

what I am looking for is very similar to how NiceHash algorithm checks for best output on a specific miner's computer (showing the Hash per second on the CPU vs each gpu).  The difference for me is I'm simply looking to get that type of calculation comparison in a way that may not be so cryptocurrency focused (i.e. using Nicehash as my bench mark tool).

This is for a white paper i'm working on that is not crypto specific but still relates.  I'm trying to find something that shows the relationship between GPU models (RX580, Vega 64, and GTX 1080 TI in my case) and any cpu to show how more efficient on power consumption the GPU is in doing a specific benchmark.  (I'm monitoring power to compare versus the 'score' of whatever benchmark I can use).

The only caveat is the benchmark tool I use needs to be publicly accepted - not home grown.  I've gone through LinPack, PassMark, BaseMark, UserBenchMark, Unigine_Heaven, and a few others.   The common thing I'm running into is they state the 'gpu' success in 1 metric (say Frames per second) versus the computer/cpu score in another metric (say flops per second).  Linpack has some gpu related items - but only for CUDA (wont work on the AMD also).  Writing my own benchmark (say a simple hash per second test say with cryptonight or something - unfortunately isn't going to meet the needs of a publicly accepted benchmark suite to use as my baseline).

My goal is to get the exact same benchmark number (say fps) compared against both to show the relationship.  I also realize that different benchmarks that are cpu specific vs gpu specific throw the results in favor of whatever they are written at.  I'm trying to visually show that a GPU is about 7 x more power efficient at the 'same' benchmarked mathematical task as say the CPU.

Sorry for the techo-babble-  but I seen some very smart posts on here and this I figured was my best shot to find one of you to point me in the write direction for my white paper research element I'm trying to produce.

thank you.
6  Alternate cryptocurrencies / Mining (Altcoins) / Re: Mining with Free Electricity on: September 06, 2018, 05:25:57 AM
One other option.   Get some big electric extension cords / net metering and sell that 20 kw back to the grid

20kw at 12 cents per kWh is about 21,000$ a year. You wonít get that though depending on local laws you might on net metering plans

25 x l3+ antminers in free electricity of 20 kw earns about $15k right now less cost of 25 antminers ($3k used on eBay) So net $12k year one

You are better off selling the electricity to neighbors if you can back feed it some how like solar net metered services include

If you go crazy and put out in some bigger miners that cost way more up front and longer roi maybe you can out pace that for profit of just selling the the electricity

For example 60 x z9mini is about 20 kw.  Thatís about $50k up front shipped.  And daily profit dropping fast Iíd expect an average around 3$ a day over 12 months best case. That puts at about $1k income per miner   I know today th looks great at 10$ to 15$ daily. Itís dropping fast and avg 12 Month income
daily could be under $1 due to difficulty in a few months.  Itís a gamble you roi at all even with free electricity based on past antminer releases the last 12 months - and you have to spend a lot to find out versus that used eBay l3 antminers  I suggested is guaranteed slow grind profit. Even if litecoin dificulty grows you will roi that hardware when bought used
7  Alternate cryptocurrencies / Mining (Altcoins) / Re: Bitmain launches the Z9 Equihash miner on: September 06, 2018, 05:08:35 AM
Does anyone have the timestamp of the cgminer.conf file and the /config directory from stock on September batch?   

I have a unit which is reporting oxoo on one of the boards, and need to restore back to original configuration before shipping it in.


Cgminer.conf will auto change time stamp any time you so much as change the pool information. It is over written each time.  So they canít see you over clocked from that file if you simply set the frequency back to 500

The log files though show your frequency each reboot and startup so delete your logs or do a factory reset from browser first and then verify logs gone on file systems
8  Alternate cryptocurrencies / Mining (Altcoins) / Re: My Starter rig on: September 06, 2018, 04:41:47 AM
Late to the game is an understatement, hopefully your gpu's were bought at the bottom pricing of today and not tied into the higher prices 30-60 days ago. 

Good choice on the Vega - I suggest you check out cast-xmr - personal experience its the best and only stable consistent option (use fo XMR/monero).

Also don't try mixing the 1070's and vega (Nvidia and AMD don't play as nice together as they should).  Can it be done?  Yes.   But the level of grief for stability especially on the vega cards is high. 

I run some 13 x Vega 56 and 8 x Vega 56 / 64 setups stable for days and weeks (just saying that out loud sounds like a laugh compared to nvidia stability rigs  that are up for weeks to month+ without issues/reboots).  Normally if you go vega, you keep them on their own rigs and have a lot of tweaking to do unless you want to pull your hair out (power play tables in the registry, and card clock/power settings are always a challenge on vegas).  I'm sure people here will have some success stories mixing vega with others, but i've not seen it once you run rigs at higher scale.

9  Alternate cryptocurrencies / Mining (Altcoins) / Re: 50 GPU Mining Farm Earns Less Than $10 A Day - VoskCoin Mining Farm Profits on: September 06, 2018, 04:30:54 AM
1 Word.  ok its not even a word..  HODL.

I feel the pain on the gpu (and asic) farming, we need to make mining great again.  

A year ago people said dont buy GPU/ASIC, take the money and invest it in the coin instead.  I didn't listen, I doubled down....

Well if you had followed that advice to take the same money instead of buying mining equipment, just buy coins at the prices a year ago --- you would of lost 60-70% of that investment.   At least putting it into mining hardware, you have some coin, some experience (that will help in some way some day in a career, or side project), and you can keep running it in the 'red' and HODL.  Don't bother trying to sell the gear on ebay - its like trying to sell your coin at the bottom, its just too late.  Ride it out.

10  Alternate cryptocurrencies / Mining (Altcoins) / Re: Mining with Free Electricity on: September 06, 2018, 03:58:39 AM
I have the opportunity to mine with 20Kw of free electricity.  Does anyone have any opinions on what the best system to use would be to maximise profits?

if cost of the mining equipment is a major concern, go with your comments below about Asic Antminer L3+ - about $130 each on Ebay.  Don't buy them new, just buy in mass used.  They are not hugely profitable unless power cost is low (and if free, its a big win and ROI would be super fast at those costs per antminer).  For 20 KW you could place about 25 of these, each generates about $600/year right now of litecoin (but if market goes up....).   Thats a 350% plus ROI on the cost of equipment in 1 year, or break even in 3 months.  Doesn't get much better.

More expensive miners (like the Z9 and Z9 minis) look great on paper, but due to people jumping in on it (and its really new) it will have a negative ROI just like the rest of the antminers at some point within the next 6 to 12 months.  And the cost to get those new in demand ASIC (or GPU) would be top dollar, that is hard to earn back .  Buy used on EBAY (or your equivalent) and you can make easy money guaranteed with ROI versus everyone else who has to buy the latest and newest high priced gear to grind out a fast return.  With your free power you are guaranteed a win.

Good luck - tell us how it goes.
11  Alternate cryptocurrencies / Altcoin Discussion / Re: The $257 Million Cryptocurrency that Wants to Upend Cloud Data Storage is Almost on: September 06, 2018, 03:45:57 AM
hard to believe any block chain related cloud file storage can find success, but best of luck to their team.  Having dove into Siacoin and their file storage concept for blockchain, burned enough to see that its just not the right use of the technology.
12  Alternate cryptocurrencies / Mining (Altcoins) / Re: Bitmain launches the Z9 Equihash miner on: September 06, 2018, 03:39:49 AM

All mine has under frequency is balance.  Do I have to downgrade the firmware?

As linked just above  - quick way is to edit the using f12 via browser under your advanced settings to set the 500 value for frequency to your over clock (see  However another quick way depending on how your farm may be setup is just to ssh in and edit the file in /config/cgminer.conf and edit the frequency by hand there in that file, and then reboot the antminer (type 'reboot' if you are in ssh).

For those not familiar with SSH, check out a program calledWinSCP or  PuttY.  WinSCP is even easier, it lets you navigate and edit files too), and just connect using the default user 'root' default password is 'admin' to your port for SSH/SCP (port 22).  You can then if using PuttY edit the file using VI (good luck if you are new to unix, sorry but google is your friend).  WinSCP is much easier to remotely access and edit files on the antminer.  Perhaps easier than using developer mode (f12) in your browser to hand edit frequency.

Again the file is located in folder    /config    and is named cgminer.conf  - you may find it easier to manage things there on all your different antminers anyway than browser access if you have lots to manage.

p.s. I use 675 Frequency and get about 14 K up to as high as 15.92 K output - varies between my different Z9 minis for the same setting (all batch 2's) and even unstable on others.  Still adjusting to fine the best stable one.

edit: 3 of my units from 'china' (fedex delivery) clock at 675 fine and stable, produce 14 to 15.9 K output.  My other 3 units that came from Hong Kong shipping origin (DHL) all dropped out a chip after about 10-15 minutes, at 675 Clock Frequency.  at 650 Clock its stable for those 3 units producing about 13.9 K up to about 14.4 K.  Arrived within a day of each other this week batch #2 - the theory that different batches, and chip quality can differ would hold true.   Why hong kong vs china origin ship units differ I dont know.  Serial numbers on the 3 from honk kong end in 914, 919, and 932.  The China serial numbers are wildly different for letters and numbers, again all 3 arrived and shipped together from china.  Temps on all are 68C to 70C for what its worth on the over clock.  (Its hot out here and using open-air system with fans).

Pages: [1]
Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!