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Showing 20 of 44 results by Tovadnok
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Board Computer hardware
Topic OP
2 * SP30 for sale (Titan data center) $3000 for both miners incl. shipping
by
Tovadnok
on 29/03/2015, 18:57:15 UTC
The title says it all. Two SP30's from the Spondoolies August group buy.
$3000 for both miners including shipping. 4.5TH each.
Post
Topic
Board Hardware
Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs
by
Tovadnok
on 29/03/2015, 13:59:25 UTC
The machines are hosted by Spondoolies at the Titan data center. Spondoolies charges $300 per machine flat rate shipping.

Anyone wants to buy 2 SP30 machines from the August group buy?

My hosting with Spondoolies has expired and I need to sell the machines or they'll be scrapped.

PM me ASAP with a price if you're interested.

It would be perfect to provide an location and approximative shipping cost for 1 or both miners Wink
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Topic
Board Hardware
Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs
by
Tovadnok
on 29/03/2015, 11:49:02 UTC
Anyone wants to buy 2 SP30 machines from the August group buy?

My hosting with Spondoolies has expired and I need to sell the machines or they'll be scrapped.

PM me ASAP with a price if you're interested.
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Topic
Board Hardware
Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs
by
Tovadnok
on 07/09/2014, 17:55:23 UTC
Hi,

Where can I email for tech support for the hosted units?
One of mine dropped to 4TH for the past few days.
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Topic
Board Computer hardware
Topic OP
Antminer S2 for sale, 2.4 BTC
by
Tovadnok
on 05/07/2014, 23:01:29 UTC
Shipping from Canada. Buyer pays shipping
Post
Topic
Board Computer hardware
Topic OP
2 x Antminer S1 with Corsair 750 power supply for sale in North America 0.55 BTC
by
Tovadnok
on 05/07/2014, 22:58:11 UTC
2 Antminer S1s (180Gh/s each) and a Corsair power supply to power both of them for sale.

0.55 btc for everything + shipping. Shipping from Canada.
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Topic
Board Service Discussion
Re: H/w Hosting Directory & Reputation
by
Tovadnok
on 31/05/2014, 03:41:50 UTC
I am sending one sp10 to Iceland, to test everything out.
Will report back at the middle of next week, as everything should be set up by then.

I will have direct access to the miner via webinterface, and i will post some screenshots.

Bitcoin Payment soon! I have suggested them to setup bitcoin payment and they told me that they will put pressure on the CFO to do that. Hooray!

Who is your contact at Advania? I may be interested in hosting a couple there.
Post
Topic
Board Pools
Re: [6600Th] Eligius: 0% Fee BTC, 105% PPS NMC, No registration, CPPSRB (New Thread)
by
Tovadnok
on 30/05/2014, 11:41:14 UTC
My workers keep switching back and forth between eligius and the backup pool. This started about 2 days ago and continues today.
Any ideas why this might be happening? It almost looks like the hash rate is divided evenly between the backup and eligius.

you sure you don't have load balance on?

I don't think so. I'm running a couple of S1's and one S2. A couple of days ago they suddenly started behaving like that.
I now switched to eclipse temporarily and they seem to be hashing at full capacity.
Post
Topic
Board Pools
Re: [6600Th] Eligius: 0% Fee BTC, 105% PPS NMC, No registration, CPPSRB (New Thread)
by
Tovadnok
on 30/05/2014, 09:38:05 UTC
My workers keep switching back and forth between eligius and the backup pool. This started about 2 days ago and continues today.
Any ideas why this might be happening? It almost looks like the hash rate is divided evenly between the backup and eligius.
Post
Topic
Board Hardware
Re: [ANN] Spondoolies-Tech - Best W/GH/s ratio - Shipping from stock
by
Tovadnok
on 24/05/2014, 14:10:29 UTC
Sorry about the uneducated question:

Some DCs quote price per kWh, others quote per amp for a 220v circuit.
What is the correct and realistic conversion between the two? I'm assuming that volts*amps = kWh is missing some efficiency factors?
Post
Topic
Board Hardware
Re: East Canada miners
by
Tovadnok
on 22/05/2014, 23:36:29 UTC
I am in QC and i also pay 0.05$/KWh

I'm in touch with several QC commercial real estate agencies and data centres. Trying to get the best price possible.

Will keep everyone posted. If someone from QC is willing to be an "attending" for, say, $100/month, please post here. I would volunteer, but I'm in ON.
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Topic
Board Hardware
Re: East Canada miners
by
Tovadnok
on 22/05/2014, 12:55:11 UTC
If you can find.

1. A commercial lease that has electricity included.
2. Several 15 amp circuits. ( I figure 1TH/s per circuit.)

I'm in !

Our residential lease, electricity included; could hold 4Th/s (if nobody lived here), at a cost of $200 per TH/s.



I'm not sure if electricity included is a good thing in this case. Usually, that would mean that you're paying a higher price than you would be paying when dealing with Hydro Quebec directly.

I'm looking at some spaces now and will post here when/if I have something.
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Topic
Board Hardware
Topic OP
East Canada miners
by
Tovadnok
on 21/05/2014, 02:11:27 UTC
Anyone interested in setting up a not-for-profit data center for miners in the Montreal area?
The reason for Montreal is cheap electricity prices.

The goal will be to have a space where miners can co-locate at cost. Every miner will be responsible for their own electricity costs. Common expenses such as rent will be split based on space usage.
Post
Topic
Board Wallet software
Re: Gocoin - totally different bitcoin client with deterministic cold wallet
by
Tovadnok
on 19/05/2014, 00:28:26 UTC
Oh, you mean the lock time.
Yeah, sure that should be easy to add.

FAIK, it's just setting the LockTime to a value other than zero.
You can do it yourself, if you like playing with source code.

Look inside wallet/signtx.go, function make_signed_tx() and change:
Code:
tx.Lock_time = 0
... to whatever you need. (like a value read from a command line).

I really encourage people to play with the code - if you are a programmer, especially if you did a lot of C, Go is a really cool language to code in.
I've been coding C all my life, but writing in Go is just so much more pleasant. And it compiles so quickly that at the beginning you cannot even believe it Smiley

Of course, there is a testnet switch -t and make sure to use it while you are having fun, to not be sorry at the end.


EDIT:
As for the lock time, I read that in order for it to work, you would also need to set this:
Code:
tin.Sequence = 0xffffffff
... to a different value.

Thanks Piotr_n. That's very helpful!
Post
Topic
Board Wallet software
Re: Gocoin - totally different bitcoin client with deterministic cold wallet
by
Tovadnok
on 17/05/2014, 17:02:42 UTC
Well, you can put any kind of scripts into the wallet's code, but without a specific application (a user case), I don't see how I could add anything more.
So far gocoin supports the following output scripts:
* P2KH address (a regular bitcoin address)
* P2SH address (that's for multisig)
* NULL output describing the next one's encrypted constant (for stealth payments)
* NULL output with an arbitrary data (e.g. to attach text messages to transactions)
Adding other kind of output scripts is not really a challenge, but I need a specific application for it, before I can put it in.

As from the node's side.
Gocoin node (unlike bitcoin-qt) does not split transactions into "standard" and "non-standard".
As long as the fee per byte is efficient, it will get routed, despite of a content of the script.

The most basic application is to make the transaction not redeemable for a given number of blocks. While it's clearly not a feature that will be currently used by many users, there are applications being built on top of the bitcoin blockchain that can take advantage of such features.

In any case, it's good to know that the wallet can be easily modified to support different output scripts.
Post
Topic
Board Wallet software
Re: Gocoin - totally different bitcoin client with deterministic cold wallet
by
Tovadnok
on 17/05/2014, 16:37:46 UTC
Do you have any plans to allow scripts in transactions?
I don't think I understand this question, so please precise.

But I have another answer to your previous question - times time a positive one Smiley

Is it possible to spend an unconfirmed transaction?
Not in the current implementation - not without modifying the source code..

Unless it would be an unspent transaction that you made yourself, using gocoin.
Actually, it is possible.
It just came to my mind.
The fetchbal tool - it can fetch unconfirmed balance.
And then, having your unconfirmed transaction in the balance folder, you can just use it on the wallet (it won't see a difference).

Thanks for clarifying regarding unconfirmed transactions.

What I meant about the scripts is to enable transactions that contain bitcoin scripts such as time constraints, and other bitcoin contracts as described here:
https://en.bitcoin.it/wiki/Contracts

Post
Topic
Board Wallet software
Re: Gocoin - totally different bitcoin client with deterministic cold wallet
by
Tovadnok
on 17/05/2014, 16:24:12 UTC
Do you have any plans to allow scripts in transactions?
Post
Topic
Board Wallet software
Re: Gocoin - totally different bitcoin client with deterministic cold wallet
by
Tovadnok
on 17/05/2014, 15:54:42 UTC
When building client or wallet:

membind.go:63: cannot use _Ctype_size_t(v.datlen) (type C.size_t) as type C.ulong in function argument
Thanks for reporting.
It must be specific for your libc, I cannot reproduce it here.
But I've just committed a possible fix - can you try now, please?

Otherwise you can always build it by overwriting membind.go (in qdb) with the one from no_gcc folder.
You just won't be able to enjoy the recent mem usage optimizations, but should build flawlessly then.

Seems to compile now... Thanks
Post
Topic
Board Wallet software
Re: Gocoin - totally different bitcoin client with deterministic cold wallet
by
Tovadnok
on 17/05/2014, 14:18:52 UTC
When building client or wallet:

membind.go:63: cannot use _Ctype_size_t(v.datlen) (type C.size_t) as type C.ulong in function argument
Post
Topic
Board Hardware
Re: [ANN] Spondoolies-Tech launches a new line of ASIC miners - Best W/GH/s ratio
by
Tovadnok
on 10/05/2014, 13:14:09 UTC
Hi,
Would 240 V/ 20 Amps single phase circuit be able to pull two SP30 machines? Or would I need 25 amps in this setup?

Thanks,