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Showing 20 of 75 results by iongchun
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Topic
Board Development & Technical Discussion
Re: What is the most secure Two-Factor Authentication Solution?
by
iongchun
on 19/03/2015, 09:46:56 UTC
yubikey neo with yubico authenticator

2fa codes are stored on the token

I wonder how that works. Is the neo the one with bluetooth and is it communicating with the authenticator app on your smartphone? Is it time-based?

The NEO has both USB and NFC interface.
You can use Yubico Authenticator desktop version (Windows/Mac/Linux) or the Android app.
Both time-based (TOTP) and event-based (HOTP) are supported, but since all Yubikeys including NEO has no clock on it,
Yubico Authenticator has to send time data to the Yubikey in order to get TOTP back.
Post
Topic
Board Bitcoin Discussion
Re: Bitcoin 0.9.0 FINAL is available [Changelog] [Download]
by
iongchun
on 20/03/2014, 04:03:00 UTC
There are some quirks in the Italian translation (and some text which hasn't even been translated).

Where can I report them?


The translations in 0.9.0 release is not the latest on Transifex.
I don't understand why the release team don't pull the latest into the release,
especially some strings are just replaced/updated several weeks before the release.
It annoys me as a translator because it happens several times, and I see half-baked translations in a release.
It could be better that the release schedule includes a period to call for translations,
so developers have a deadline to update strings to be localized,
and translators have a deadline to finish their work.
Post
Topic
Board Group buys
Re: Neptune GB With Coinsortium .4 BTC=100 GH/s [Closed]
by
iongchun
on 09/03/2014, 05:54:34 UTC
Did everone Truly received a refund from soniq Huh

I confirm that I received full refund from soniq in December.
Post
Topic
Board Hardware
Re: [ANN] Technobit HEX8A1 - 6/8 chip Coincraft A1 board -999 EUR March delivery
by
iongchun
on 16/02/2014, 01:08:35 UTC
Thanks for the delivery, Marto.
The fans are really noisy, I replace them with low CFM and quiet ones,
and run the HEX8A1 with only 175 in frequency and 870 in voltage parameter.

When connected to Linux machine, lsusb will show:
Bus 001 Device 017: ID 04d8:000a Microchip Technology, Inc. CDC RS-232 Emulation Demo

And it appears as a tty device:
crw-rw---- 1 root dialout 166, 1 2g  16 08:51 /dev/ttyACM2

Showed in dmesg:
[  161.103406] cdc_acm 1-1.1:1.0: This device cannot do calls on its own. It is not a modem.
[  161.103442] cdc_acm 1-1.1:1.0: ttyACM2: USB ACM device

Running with cgminer:
Code:
cgminer version 3.12.3 - Started: [2014-02-15 21:11:05]
------------------------------------------------------------------------------------------
 (5s):151.1G (avg):175.5Gh/s | A:1696768  R:28928  HW:64  WU:38.3/m
 ST: 2  SS: 0  NB: 99  LW: 1891862  GF: 0  RF: 0
 Connected to 10.0.0.254 diff 64 with stratum as user 1X.....
 Block: 168ab84a...  Diff:2.62G  Started: [08:53:52]  Best share: 1.86M
------------------------------------------------------------------------------------------
 [P]ool management [S]ettings [D]isplay options [Q]uit
 HEX8 0: 175  870/ 872mV | 173.9G/175.5Gh/s | A:1696448 R:28928 HW:64/0.24% WU:38.3/m
------------------------------------------------------------------------------------------

While I also run bfgminer with other mining hardware, it seems bfgminer could cause the OS to hang when it probe the tty device.
This can be avoided with run HEX8A1's cgminer first (so the tty device would disappear), or plug the HEX8A1 after bfgminer runs.

Oh, and it runs well with p2pool, with less than 2% DOA, compared to 5~6% DOA for BFL or BitFury devices.
Post
Topic
Board Pools
Re: Benchmark [P2Pool vs btcGuild vs Eligius]
by
iongchun
on 15/02/2014, 11:54:38 UTC
 
Quote
All time total payout: 2.51377786 BTC
...
3) 0.19437356
...
7)0.24787598
...
15) 0.06885736


3) 7) and 15) - that IS NOT  Newly Generated Coins.
Ok. I will check it, but I counted only Newly Generated Coins

Sometimes (ex. when payout queue is very long) wizkid057 would make manual payout with normal transaction,
it is not unusual.
Post
Topic
Board Pools
Re: Confused about which mining pool to join and stick with.
by
iongchun
on 11/02/2014, 06:46:22 UTC

not really...

Just join p2pool.
Its time to decentralize mining again.
0% or very low fees and best payouts.
no chance for anybody to steal your mined coins.
No DDoS Attacks.
Absolute secure.
You will support Bitconcommunity/-network so as it should be.

Believe me: p2pool ist the best!

Nodes you can find here: p2pool-nodes.info or just join my node (full optimized; see my signature).

I agree with you except the port number in your signature Smiley
Post
Topic
Board Pools
Re: Weekly pool and network statistics
by
iongchun
on 30/01/2014, 00:00:11 UTC

Thanks, iongchun. Were you mining long enough to get a feel for pool reliability?

I just tried it for nearly 2 days with 33Gh/s,
20min miner hash rate floats between 25 to 38Ghz/s, I guess it is due to high difficulty (256).
Reject rate is about 1.2%, and pool statistics from bfgminer:
Code:
Unable to get work from server occasions: 2
I think this pool could be considered stable.


They replied to my email almost straight away, which was nice. No complete block history API just yet, but lots of new and interesting information!

Look forward to your report for next week Smiley

Post
Topic
Board Pools
Re: Weekly pool and network statistics
by
iongchun
on 28/01/2014, 05:39:34 UTC

Of course not, you can read from my signature Wink

Perhaps I should have written "Have you mined there?" Smiley

From what I read on f2pool’s website, it is a PPS pool with 4% fee (24 BTC paid per block),
payout is made once a day for miners with balance of 0.0005 BTC or more.
It seems only Stratum is supported as mining protocol.
I guess tx fee is kept by the pool.


Google translate tells me similar. I'll try their support address, but I'm not sure they'll respond to an english email out of the blue.

Hope you have progress with it, organofcorti.
I tried the pool for some time, and observe the following:
1. The pool always gives out works of difficulty 256, no matter with 333Mh/s or 33Gh/s hardware;
2. No pool statistics is available even for a registered user. I can only see user hashrate graph, miner hashrate, balance, etc.;
3. Payout is round to 0.0001, the remaining is kept in user balance.


Regards,
iongchun
Post
Topic
Board Pools
Re: Weekly pool and network statistics
by
iongchun
on 26/01/2014, 13:49:42 UTC

Discus Fish is the pool operator’s nickname, his/her pool is f2pool.com
Pity that no much public data can be found there for unregistered user.


Thanks! I'll have to update the pool name. Do you mine there?

Of course not, you can read from my signature Wink

From what I read on f2pool’s website, it is a PPS pool with 4% fee (24 BTC paid per block),
payout is made once a day for miners with balance of 0.0005 BTC or more.
It seems only Stratum is supported as mining protocol.
I guess tx fee is kept by the pool.
Post
Topic
Board Pools
Re: Weekly pool and network statistics
by
iongchun
on 26/01/2014, 13:33:54 UTC
Thanks for the report, organofcorti.

I am surprised to see Discus Fish growing so rapidly for the past months.
Is it indeed a pool? Or is it sort sort of private mining farm?


Discus Fish is a Chinese pool that was started by Chinese student bitcoin enthusiasts. I don't know much more about it. There's a bit of information about the relationship between Discus Fish and "For Pierce and Paul" here: http://bitcoinstats.com/irc/bitcoin-dev/logs/2013/12/29

Discus Fish is the pool operator’s nickname, his/her pool is f2pool.com
Pity that no much public data can be found there for unregistered user.
Post
Topic
Board Pools
Re: [185 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
iongchun
on 18/01/2014, 12:09:59 UTC

I pay 3% at BTC Guild.  I get paid for orphans, I get merged mining with NMC (impossible on p2pool solo), extremely low variance, 0.2% stales, and transaction fees.

You're going to have a hard time convincing me p2pool is better than that.

M

I don't want to convince you, because we value the benefit of mining differently.
Especially the decentralization and variance part.
Post
Topic
Board Pools
Re: [185 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool
by
iongchun
on 18/01/2014, 02:42:34 UTC


You're comparing with others in p2pool.  I'm comparing with non p2pool.

M

You could think in p2pool way.
If your good share rate is higher/lower than others in p2pool,
your average income is higher/lower than others in non-p2pool.
Then take low miner fee, tx fee, p2p, and coinbase tx as pros, and higher variance as cons.
Post
Topic
Board Pools
Re: [~32 TH] HHTT - Selected Diff/Stratum/PPLNS/Paid Stales/High Availability/Tor
by
iongchun
on 17/01/2014, 05:06:04 UTC

I suppose you mean the difficulty for each worker, since it reads like node-basis (i.e with your miners...).
Actually everyone can adjust this by append the number they want to the username (address or not),
for example, 13qnEgPTxJW6mm88dLpnHXZyryN5EXBciq+16
But I think it just make the graphs looks nicer for small miners  Wink


Ah, didn't know that.  But that auto adjust to something to keep the graphs pretty would be very nice.

This can be done easily, but such a "big pool" feature might not be suitable for p2ool,
I guess it is why forrestv does not implement or hear the request.

You could try --miner-share-rate or --address-share-rate in auto-worker-diff branch of my git fork:
https://github.com/iongchun/p2pool.git
Post
Topic
Board Mining software (miners)
Re: BFGMiner 3.9.0: modular ASIC+FPGA, GBT+Strtm, RPC, Mac/Lnx/W64, Merry Christmas!
by
iongchun
on 15/01/2014, 13:30:44 UTC
Still no Drillbit support...it's only been about 2 months now...
The code is in git, it'll be in 3.10.

Hi Luke, thanks for the driver, just tried the latest code with my Drillbits, I have 2 issues:

1. Stats is unavailable for thumbs, so bfgminer causes lots of "Short read in response to 'T'" error.
Just adding a "if (dev->procs == 1) return false;" in drillbit_get_stats fixes this for me;

2. The range for external clock should be wider, many people overclock Thumbs to higher than 230.
Currently cgminer driver do not limit it, just prints a warning when lower than 80 or higher than 230.
Angus of Drillbit Systems had suggested to try 250 for up to 3GH/s with active cooling and enough power (1000mA).
Post
Topic
Board Hardware
Re: [ANN] Technobit 40 GH/s HEX16B(Bitfury ) now shipping
by
iongchun
on 15/01/2014, 00:36:03 UTC
It's a good idea, please ask refund, it will make my order ship faster Smiley
Yap, you can think as what you say.
Good luck...
Please, when you make online order just enter your address correctly next time

Best

I can only say, what we enter is correct address (postal codes) for any other delivery services, even  for UPS itself.
The problem is in the UPS validation API, either you use it in a wrong way,
or the data on the server is plain wrong or incomplete.

Post
Topic
Board Pools
Re: [~32 TH] HHTT - Selected Diff/Stratum/PPLNS/Paid Stales/High Availability/Tor
by
iongchun
on 14/01/2014, 05:11:23 UTC
2) The p2pool does adjust share difficulty, but on a global basis.  So with just my miners attached, everyone who connected will see about 1k share difficulty, which is again problematic for small miners.

I suppose you mean the difficulty for each worker, since it reads like node-basis (i.e with your miners...).
Actually everyone can adjust this by append the number they want to the username (address or not),
for example, 13qnEgPTxJW6mm88dLpnHXZyryN5EXBciq+16
But I think it just make the graphs looks nicer for small miners  Wink
Post
Topic
Board Hardware
Re: TECHNOBIT S-HASH minig board, Technobit Nanofury and Bitfury chip distribution
by
iongchun
on 27/12/2013, 01:12:15 UTC
Correct. Because all stratum decoding is handled by small microcontroller, with just a few kilobytes of memory, it can be a problem sometimes. The theoretical requirement could be a few megabytes, so there's just no way it can be modified to handle all circumstances.

Most other pools have much smaller requirements, because they only have a simple transaction to their own wallet.

Running v0.1.10 firmware for more than 3 days with Eligius and HHTT:
"Response from pool too long" only occured once with Eligius, and S-HASH switched to HHTT after some pool rejections.
After some time it switched back, and kept working with Eligius again smoothly.
Thanks cscape for  the new firmware!
Post
Topic
Board Hardware
Re: TECHNOBIT S-HASH minig board, Technobit Nanofury and Bitfury chip distribution
by
iongchun
on 24/12/2013, 08:22:50 UTC
Another problem with p2pool is the fast block times, and the fact that the bitfury chips don't have an option to cancel the job they've started. This means that it would be impossible to avoid large percentage of stale blocks.

I see... no wonder NanoFuries and Drillbit miners also have high dead rate (about 6%), like BFL miners.
But the situation of these Bitfury miners is still better than average dead rate (6.7% in month) of p2pool network.
Maybe because it is a common issue for mining hardwares, though with different causes.
Post
Topic
Board Hardware
Re: TECHNOBIT S-HASH minig board, Technobit Nanofury and Bitfury chip distribution
by
iongchun
on 24/12/2013, 07:47:32 UTC
"Response from pool too long" problem also sometimes happens with Eligius,
I guess it is due to large generation transactions for payout?

Correct. Because all stratum decoding is handled by small microcontroller, with just a few kilobytes of memory, it can be a problem sometimes. The theoretical requirement could be a few megabytes, so there's just no way it can be modified to handle all circumstances.

Most other pools have much smaller requirements, because they only have a simple transaction to their own wallet.

I see, then there is little hope for the S-HASH to work with P2pool.
Currently I will stick with Eligius but fallback to HHTT to see how it works.
Thanks for the help!
Post
Topic
Board Hardware
Re: TECHNOBIT S-HASH minig board, Technobit Nanofury and Bitfury chip distribution
by
iongchun
on 24/12/2013, 01:47:55 UTC
Debug information from S-Hash console:

Trying pool 2, server 10.0.0.250:19332 as user shash:
Miner 10.0.0.251 connecting to server 10.0.0.254:19332
unknown tag "jsonrpc"
unknown tag "jsonrpc"
unknown tag "jsonrpc"
set difficulty 1
Response from pool too long. Wait or pick a different pool.
unknown tag "jsonrpc"
set difficulty 1
Response from pool too long. Wait or pick a different pool.
unknown tag "jsonrpc"
....

It seems the software could not handle p2pool stratum well Sad


"Response from pool too long" problem also sometimes happens with Eligius,
I guess it is due to large generation transactions for payout?