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1  Bitcoin / Hardware / Re: Cointerra Terraminer IV Unboxing and Setup on: February 19, 2014, 06:23:48 PM
We are also seeing some issues with one of the CT miners:

The unhealthy miner:


And for comparison a healthy one:


Miners are on different networks, and first miner's has been mining a little on the backup pool, so we are suspecting some network issues at the moment.
Local network ping to the miner was healthy all time, so now we are checking external network connection.
The miner has also completely stopped once and had to be rebooted. Unfortunately miner does not expose any logs, but only current stats Sad

Thanks for sharing the issue with not hashing core, we will also try to look for that as well.
2  Bitcoin / Mining / Re: Wow Mining hashrate just broke 2 PH/s according to Blockchain.info on: October 14, 2013, 05:02:11 PM
The exact number is 2097152 GH = 2 PH.

There is no exact number, just estimates.

I am saying that 2 PH equals to exactly 2097152 GH, for those interested to capture exact moment.

It does not.

2 PH = 2000 TH = 2000000 GH = 2000000000 MH = etc... You get the idea.

Lets not propagate the sillyness of the computer-storage world where standard metric quantities are mutilated to the nearest power of 2. It's all neat powers of 10 in the SI unit system, like it's supposed to be.

Computer Science deals often with powers of 2. Same a s bitcoin.

Let's see that sillyness below:

If you use power of 2 then:
4GH/s produces 1 shares per second.
1TH/s produces 1 share of difficulty 8 per second.

In base of 10 you have:
4HG/s = 4,000,000,000 H/s would produces 0.931322574615478515625 shares per second
1TH/s would produce 0.9094947017729282379150390625 shares of diffuculty per second.
etc.

You get the idea.

3  Bitcoin / Hardware / Re: CoinTerra announces <$3/GH January pricing and new product availability on: September 13, 2013, 03:51:36 PM
I'm pretty sure the CoinTerra team is legit, though I have no idea what asxproject.com is or was and stuff related to that.

Why? I assume: "If Dr. Naveed Sherwan is legit and involved in CT, CoinTerra is legit also".

1. He is a team member and there is reference to Open Silicon:
http://cointerra.com/team/

2. Open Silicon is huge:
http://en.wikipedia.org/wiki/Open-Silicon

3. He is CEO of OS:
http://www.open-silicon.com/management/

4. The "proof" that Mr. Sherwan is indeed involved in CT:
http://www.youtube.com/K199f61n4qM?t=2m27s

(link in 4. doesn't work).

You didn't actually prove anything. If a scammer wanted to scam us, they could just create website called: http://scamware.com/team/ and put there a reference to Bill Gates, Steve Jobs and Dr Sherwani.
If you try to prove that CT is legit, you can't use CT website as a source.

If you want actualy proof that Dr Sherwani is really affiliated with CT, then it is here:

(assuming you trust me that I didn't PhotoShop that Grin)
4  Bitcoin / Hardware / Re: CoinTerra announces <$3/GH January pricing and new product availability on: September 13, 2013, 04:57:16 AM
At the time of delivery customers may be offered an option to upgrade their TerraMiner for a small charge, further lowering the cost per Gigahash.

Could you please elaborate more how would that work?
Is this applicable for batch 1 and batch 2?
What kind of upgrade would it be, and how small would be the charge?
5  Bitcoin / Hardware / Re: CoinTerra announces its first ASIC - Hash-Rate greater than 500 GH/s on: September 13, 2013, 04:20:07 AM
Don't forget that you can transfer your order to the lower price point batch 2 unit "for a small fee!"

Where did you get that from?

When we contacted info@cointerra.com with our concerns regarding the price strategy, we only got:

Quote
Thanks for the feedback, XYZ.
Have an Awesome Day!
CoinTerra support

which, maybe not intentional, but it didn't sound very good, and wasn't much more usefull either.
6  Bitcoin / Hardware / Re: CoinTerra announces its first ASIC - Hash-Rate greater than 500 GH/s on: September 13, 2013, 12:33:45 AM
Why would anyone order today a December batch for $14,000 if they can get it month later for just $6000?

Do you honestly believe that a 2TH miner running for the whole December (assuming that they deliver December batch on Dec 1st) would earn $8000?
https://bitcointalk.org/index.php?topic=283820.0 (6,000 to 8,000 TH/s by end of 2013)

Assuming BTC = 130USD, 7PH total network hashing power (1G difficulty),
2 TH would produce $3,930 in one month.
(http://mining.thegenesisblock.com/a/48447b86ed)

Given this putting a price tag of $8000 on 1 month earlier delivery is not exactly appropriate.
Also, the Delivery Time was not part of the product until today. If Cointerra is trying to include the Delivery Date as part of the product, then when ordering a product, it should have exact delivery date, not a month.
The current state is, that order from December batch may be shipped on Dec 31 and order from January batch shipped on Jan 1st - and in this case the "difference" between those 2 products is really none.

I'm not really expecting them to drop December price to $6000 as we all agree that Time=Money. But $8000 difference is not really reasonable.

Unfortunately, the current message they are sending to existing customers is more or less:
"Thanks you for being valuable customer and donating to our Research&Development.
We no longer need you and we can drop prices as much as we want.
And also we are renaming our product just in case so you don't ask for anything with respect to the Price Protection"
7  Bitcoin / Hardware / Re: CoinTerra announces its first ASIC - Hash-Rate greater than 500 GH/s on: September 12, 2013, 11:34:09 PM
There is no confusion.
The problem is that, if you ordered already, you no longer have luxury of choosing between price X or price Y.
And to address that problem, Cointerra promised, that in case of changing pricing they will reprice the orders or provide a credit to existing customers.

So far no such announcement was made.
So this brings the question whether they are going to stand up to their promise?

At least to me, TerraMiner IV - 2TH shipping in December 31st is same product as TerraMiner IV - 2TH shipping in January 1st.
8  Bitcoin / Hardware / Re: CoinTerra announces its first ASIC - Hash-Rate greater than 500 GH/s on: September 12, 2013, 10:38:56 PM
TerraMiner IV – 2TH/s, Networked Miner (December Batch) $13,999
TerraMiner IV – 2TH/s, Networked Miner (January Batch) $5,999

https://cointerra.zendesk.com/hc/en-us
"Price Protection

For any undelivered orders in Batch 1, if CoinTerra changes the price of TerraMiner IV systems or GoldStrike1 ASICs before delivery, CoinTerra will re-price all orders and offer either a cash refund or a larger and more valuable hash power credit"

It looks like the TerraMiner IV now costs much less.

When can we expect the repricing of orders or a valuable hash power credit?
Or are you trying to find your way out of the promise you made by just renaming the same product, and calling it a new thing?

It's not even like the "early January" delivery is any different than December delivery + up to 30 days allowed delay.
9  Other / CPU/GPU Bitcoin mining hardware / Re: List of motherboard that require shorting pin A1 B17 for pci-e 1x to work. on: September 24, 2011, 08:49:00 PM
RESOLVED:
I've switched to regular x1 -> x16 ribbon riser and switched from Windows 7 to BAMT. With this, Foxconn A7DA-S 3.0 is nicely mining using 3 cards (2 directly in PCIE x16, 1 in PCIE x1 using riser) *without* shorting any pins.
10  Other / CPU/GPU Bitcoin mining hardware / Re: List of motherboard that require shorting pin A1 B17 for pci-e 1x to work. on: September 17, 2011, 06:51:57 PM
It is Foxconn A7DA-S 3.0.

I can't say for sure whether the port is physically damaged or is it just software issue. On the other machine with the same mobo, there are periods of time when sometimes card is working, sometimes system gets unstable (freezes), but the card is being detected and sometimes card is not being detected at all  - I haven't noticed any rule to it though.
11  Other / CPU/GPU Bitcoin mining hardware / Re: List of motherboard that require shorting pin A1 B17 for pci-e 1x to work. on: September 15, 2011, 04:37:01 PM
Shorting A1-B17 worked on Foxconn (card was detected and running). However after running for 12 hours it seems like the PCIE slot on mobo died. I tried using the second port but apparently it died too shortly after.
I was running total of 3 5830 cards on Foxconn (overclocked from 800 to 900). Is it possible that the card was draining too much power from PCIE x1 which caused it to get damaged?
When you run cards on PCIE x1 do you also redirect A2,A3,B1,B2,B3 pins to use 12V directly from PSU isntead of mobo?
12  Bitcoin / Mining support / Re: Headless Windows Mining? on: September 04, 2011, 06:35:11 AM
I'm not sure why anyone would need dummy plugs on Windows 7...

You need to do 3 steps to configure headless miner on w7:
1) Autlogin: http://pcsupport.about.com/od/windows7/ht/auto-logon-windows-7.htm
2) Add your miner to autostart. Gui-miner allows to specify what miners run on start up, so you only need to add gui-miner shortcut to windows startup. Phoenix miner can be started from .cmd file which would call it with proper args. Ofc, shortcut to .cmd file needs to be added to windows startup.
3) Configure overclocking: seems like GUI-based OC software actually cares about card being plugged to something, but ClockTweak app ( http://bitcointalk.org/index.php?topic=9982 ) is a command line tool and works very nicely from Startup shortcut and can change core clock, memory clock, fan speed etc... for any GPU without a need for dummies - however it costs 0.2BTC - cheaper than making dummy. Note: OC will not work when Remote Desktopping, but works fine from autostart.
13  Economy / Goods / Re: WTS - 1 x 6870 and 1 x 5830 on: August 31, 2011, 05:29:31 AM
I'm interested in 6870, but you can buy a new 6870 at newegg for $155 shipped (http://www.newegg.com/Product/Product.aspx?Item=N82E16814102948) - so $150 is kinda much for an used one.
14  Bitcoin / Mining software (miners) / Re: bitHopper: Python Pool Hopper Proxy on: August 25, 2011, 05:22:04 AM
I think their balance it just heavily delayed, as they wait for enough confirmations. My balance just got updated and the number does make some sense.
15  Bitcoin / Mining software (miners) / Re: bitHopper: Python Pool Hopper Proxy on: August 24, 2011, 04:09:41 AM
Anyone else getting an error where BitHopper stops after a period of time?

It just gets stuck...

[14:16:38] writing to database
[14:17:38] writing to database
[14:18:38] writing to database
[14:19:38] writing to database
[14:20:38] writing to database
[14:21:38] writing to database
[14:22:38] writing to database
[14:23:38] writing to database


+1 for this since i got the latest version

EDIT: this still isn't fixed in the latest version... just a heads up.

I get an LP call then constant "writing to database" messages.
renders my miner useless until i restart bithopper Sad
occurs every 30 minutes approximately for me.

+1

occurs on BH 0.2.2.4-68.

As a workaround I wrote a very simple windows console script which restarts the BH about every 30 minutes. It assumes that there is only a single python.exe process running and that it is a BH.
Code:
@echo off
set DELAY=1800
set PYTHON_IM=python.exe
set PYTHON_PATH=c:\Python27\python.exe
set BH_PATH=d:\c00w-bitHopper\bitHopper.py

:loop
echo Restarting BitHopper....
taskkill /T /IM %PYTHON_IM%
start %PYTHON_PATH% %BH_PATH%
echo Waiting %DELAY% sec...
ping 127.0.0.1 -n %DELAY% >nul
goto :loop
16  Bitcoin / Mining software (miners) / Re: bitHopper: Python Pool Hopper Proxy on: August 23, 2011, 11:05:18 PM
Shocked OMG, look at slush's block #7543:


Lots of BTC for anyone who was able to squeeze a share in. To bad I didn't  Cry
17  Bitcoin / Mining software (miners) / Re: bitHopper: Python Pool Hopper Proxy on: August 22, 2011, 04:46:01 AM
A couple of days ago I switched to the new version of BH and notices some weird behavior.
After some time pools like mtred, ozco are being switched to api_disable. However most of the time shares and scheduler seems to work for them. Does anyone else hit this problem?

btw. BH doesn't show any stats disturbances on Tripplemining chart for me, so I pointed one miner towards it Smiley
18  Bitcoin / Mining software (miners) / Re: bitHopper: Python Pool Hopper Proxy on: August 21, 2011, 03:46:58 PM
w.  When they do steal blocks they submit them under their private wallet, not through their pool.

But the miners found a hash for the block with an address belonging to a pool. Pool owner cannot change the address, as it would render the hash useless.
Pool owner can hide the block and don't report it on website and don't pay for it. If it is rare enough, then it would be hard to detect.
19  Bitcoin / Mining software (miners) / Re: bitHopper: Python Pool Hopper Proxy on: August 21, 2011, 03:42:14 PM
I think the reasons are 1. That would take some effort, 2. Math fail (such as the below-mentioned pool op not believing that pool hoppers reduce earnings, and me being unable to communicate with him in the language of integral calculus and binomial statistics, since he's working at a hosting company at the age I was studying engineering), 3. User resistance (typical PPLNS conversion discussion: "I don't like the idea of my shares expiring..."), and 4. Greed - hopping doesn't reduce the earnings of pool ops, just the users, and more block solves = more fees they get to keep.

...

I am referring to the instability and extra work that hoppers create for pool operators and their users. I happen to know several network problems at bitcoins.lc were from pool hoppers, specifically from hundreds of connections a second being opened by the multipool op and other unknown actors, essentially DDOSing the pool. Jine had to implement firewall caching because of the load the constant stat-refreshing was causing, and had to switch over to to a VM environment with load distribution between six different servers, because proxied and aggregated connections were not re-using TCP sessions properly and would run pushpoold out of TCP/IP ports and crash the pool for all the users. That I might be bitter about, along with having to switch my higher aggression mining tasks to a PPLNS pool instead of my first choice, to avoid earning measurably less.

I do somewhat agree that the game is flawed if you have to kick out the card counters. However, you aren't taking from the house, you are taking from other miners in a situation where the ideal would be that we pool our resources for the good of all. My response is to the self-justifying posts every few pages of this thread that "pools should be glad, we help them solve blocks", or "xxx pool is unscrupulous a-holes because they are taking measures against pool hopping".


Yes, all of the aboove are viable reasons. But that's the real world, if someone is lazy or ignorant, then they ususally get less paid job than someone smart. It is true, that on a pool with hoppers, miners will receive less money. Actually the more correct, would be that on the pool with hoppers, miners receive the exact money they are supposed to receive on a Prop pool. Without hoppers they just receive more bonuses from the short blocks. Blaming hoppers for this is like blaming poker players that they only play good hands and fold on bad hands. Or blaming some people that they only buy lottery coupons when there is a cumulation and the EV from such buy is above 0 and as such reducing the reward for everyday-lottery-players. Hoppers so use the system for their benefits. The first people who started using GPU instead of CPU for mining were also using the system for their benefits, where they suddenly found an "unfair" advantage.

Network stability is related to the implementation of hopping rather than hopping itself. Hopefully BH will improve and be more efficient with retrieving data. But still, our first choice is JSON, which should be cheap for the pool server. If a pool fakes JSON then we download their website Smiley

Mining is a game of chance and game of skill. To mine effectively, you need to use the best software and best hardware, otherwise the results are going to be sub-optimal. Every new GPU added to the network causes all other miners to loose their income. Every new version of mining software kernels also give more money to miners using it on the expense of miners who don't. Mining bitcoins is all about taking it from other miners.


20  Bitcoin / Mining software (miners) / Re: bitHopper: Python Pool Hopper Proxy on: August 20, 2011, 07:54:16 PM

This is what you are doing to bitcoin and pools. The goal of pools is not directly to "solve blocks", and saying that pool hoppers "help solve blocks" is a straw-man argument. A pool is there for bitcoin miners to pool their resources to reduce variability and get more regular payments. Miners do not pool mine to make more or less money, they pool mine to make the same expected amount, but not have to wait months for a payout. Having a bunch of opportunists jump on and saying we "help solve blocks" is merely a convenient and fallacious excuse for stealing the early shares in pool rounds that are compensated more because of the chance of a short round happening, in an otherwise fair payment system for full-time miners. You think your work should be paid more than everybody else's? You think everyone else's earnings should be decreased because the short rounds (that should compensate full-time miners for the long ones they suffer) are exploited? It is fair to hit the bandwidth of a dozen pools web pages every minute and open a bunch of TCP sockets, causing pool ops to need hardware upgrades and spend time with mitigation measures? You think pools want more variability - shorter short rounds and longer long rounds? That is an antisocial narcissistic notion.

Pool hoppers do decrease the earnings of everyone else in pools, and on bitcoin as a whole. Hoppers aren't adding more hashrate to bitcoin, they are just strategically moving around their share submissions to be compensated more for the same amount of work, more than others. This leaves less earnings for others on a pool, and less earnings for all bitcoin users. Legitimate pool miners have less time to submit shares in short rounds, and then they have to split those earnings with more people.

It is game on, pools that still prefer the proportional payment method should do whatever in their power makes their pool mining experience a positive one, including not having egocentrists degrade a fair rewards system and network stability.

If pools care so much about their miners, then why they don't implement a fair reward system like PPLNS or PPS ? PROP is not a fair system. If you submit shares late, you are being paid for them less than for shares submitted early (in terms of expected value), despite that you do the same amount of work - so how this is fair?

And hoppers degarding network stability or earnings of bitcoin as a whole? How? Even if someone cracked SH256 and was able to generate hashes with 100x speed than other it would not destabilize the system. Bitcoin doesn't care about the pools or hoppers. The only thing which matters is that a block should happen every 10 minutes. Who gets the block, doesn't really matter.
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