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1581  Local / Nederlands (Dutch) / Re: Nederlands! (algemeen) on: August 20, 2012, 08:02:12 AM
Een crash en nu weer een herstel.
Ik zag in de chat op btc-e dat het volgens hun komt door de aankondiging van pirate dat hij stopt, geen idee of het echt zo is.
1582  Local / Nederlands (Dutch) / Re: Nederlands! (algemeen) on: August 20, 2012, 05:00:35 AM
Volgens mij is hij alweer aan het stijgen.
Was gisteren dacht ik rond de 5 of 6 euro, nu net rond de 8,50
1583  Economy / Securities / Re: [GLBSE] Introducing: Bitcoin Syndicate, a new mining op trading publicly! on: August 14, 2012, 08:22:37 PM
img joker watching burning pile of money

objection. funds lost in the gox event did not burn but exist and are technically spendable
or did I miss any small print?
Unless the transaction is to an address nobody has the private key for, that's basically the same as burning a pile of money.
1584  Local / Nederlands (Dutch) / Re: Nederlands! (algemeen) on: August 13, 2012, 05:07:24 PM
Ik snap dat hele idee niet van pool hoppers, waarom zou dat een betere opbrengst opleveren?

Wiskunde Smiley
Het is meestal eenvoudiger te begrijpen hoe je minder kan verdienen door pool hopping. Neem een proportionele pool zoals deepbit. Stel dat je gewoonlijk PPS minet op Ozcoin of zo, maar telkens deepbit een lange ronde heeft, neem 4M shares ipv het huidige gemiddelde van ~2M, en je hopt dan naar deepbit. Je uitbetaling op deepbit is proportioneel, dus per share zal je in het beste geval niet meer dan de helft verdienen van het gemiddelde of PPS en mogelijk nog een stuk minder als de ronde nog veel langer duurt.

Een pool hopper doet natuurlijk net  het omgekeerde. Hij hopt naar pools die net begonnen zijn met een nieuwe ronde. Als de ronde heel kort is, verdient hij er veel op, net zoals een non stop miner, maar als de ronde langer begint te duren, en de verwachtte betaling per share als gevolg daarvan  zakt,  hopt hij naar een eerlijke pool (PPLNS, PPS of wat dan ook). Hij zal gemiddeld dus meer shares hebben in korte, winstgevende rondes dan in lange rondes en dus meer dan gemiddeld verdienen.

Bij PPS is betaling niet afhankelijk van geluk. Bij proportionele pools (en in beperkte mate, score pools zoals Slush) is je betaling per share afhankelijk van toeval uit het verleden. Als je dat verleden kent, kan je er van profiteren. Bij PPLNS is betaling per share afhankelijk van geluk in de toekomst, en dus per definitie ongekend en daar kan je niet va profiteren.
Ah, tnx, ik snap waar de winst nu vandaan komt Smiley
1585  Local / Nederlands (Dutch) / Re: Nederlands! (algemeen) on: August 13, 2012, 02:04:52 PM
Ik snap dat hele idee niet van pool hoppers, waarom zou dat een betere opbrengst opleveren?
1586  Economy / Securities / Re: [GLBSE] MtGox Volatility Trading Bot [GMVT-BOT] on: August 10, 2012, 08:28:33 PM
There are 2 bots, one on BitcoinCentral and one on MtGox.
He's talking about the BitcoinCentral now, the MtGox is the one for the shareholders I think.
1587  Other / Beginners & Help / Re: Intersango Scam??? on: August 10, 2012, 04:44:29 PM
I've done 70 and 300 euro's, everything went well.
1588  Alternate cryptocurrencies / Mining (Altcoins) / Re: [LTC] An (even more) optimized version of cpuminer on: August 09, 2012, 07:01:43 PM
The scratchpad used for scrypt is 128.5kB, so a 256kB L2 cache is enough to not have to use the L3 cache. (except maybe when a lot of task switching is done)

For processors without cache or a very small cache you want lower latency more than a higher bandwidth.
1589  Alternate cryptocurrencies / Mining (Altcoins) / Re: [LTC] An (even more) optimized version of cpuminer on: August 09, 2012, 05:03:48 PM
Quote from: wikipedia
The FMA instruction set is the name of a future extension to the 128 and 256-bit SIMD instructions in the X86 microprocessor instruction set to perform fused multiply–add (FMA) operations.
and
Quote from: wikipedia
The FMA operation has the form:
d=a+b*c
I know sha doesn't use multiplications and as fas as I know scrypt doesn't either.
So these instructions can't be used.
1590  Economy / Service Discussion / Re: Why trust GLBSE? on: August 07, 2012, 06:39:47 PM
How much money is there really to run with?
When a new asset is created and is sold there is money, but the moment the asset creator redraws hit money there isn't anymore.
The only money there is to run with is the balance in the accounts.
So it looks like there is a lot, but in reality there is a lot less.
All the fees I've paid added together are more worth than my current balance.
1591  Bitcoin / Hardware / Re: Looking for an FPGA with cache for BTC and Litecoin Mining - any ideas? on: August 05, 2012, 07:07:37 AM
I think I would round it up to 256 kB so you only need to make address lines for within the 256 kB and other address lines for the threads. That way you don't have to calculate where you must read by doing thread number * 128.5 kB.
But that would still give the possibility of 512 parallel scrypt threads with that amount of memory.
1592  Other / Off-topic / Re: Anyone heard any updates on the BFL SC's? on: August 01, 2012, 01:09:08 PM
As I feared, this is yet another BFL thread that has degenerated (nice story, though). They all seem to be destined for this fate. Maybe I should just give up and order some more BFLs already ...  Undecided
Godwin's law
1593  Other / Off-topic / Re: More minirigs on the wild :) on: August 01, 2012, 10:11:35 AM
6 rigs with 25 GHash/s each, total 150 GHash/s
Each 4 GHash/s gives a share each second (average) with share difficulty 1, so 150 / 4 = 37.5 shares/sec.
Each share is roughly 1kB so 37.5 kB/sec.
Or talking about network connection speed not in bytes but in bits/sec, 300 kb/sec.
1594  Other / Off-topic / Re: Anyone heard any updates on the BFL SC's? on: August 01, 2012, 09:20:17 AM
But if the ROI for a gpu is about one year right now, and the asic's make the difficulty 20 times higher, the ROI for gpu becomes 20 year so probably not many new gpu rigs will be build just for mining.
1595  Bitcoin / Development & Technical Discussion / Re: Broadcasting transaction with unconfirmed input(s) on: July 31, 2012, 12:41:13 PM
Do you mean what satoshi dice does?
http://www.satoshidice.com/
1596  Other / Beginners & Help / Re: Hypothetical question on: July 31, 2012, 11:47:17 AM
That way you won't collect money to buy more bitcoins, you collect bitcoins.
To drive price up you first have to sell the bitcoins to have currency to buy bitcoins, but by selling you decrease the demand.
1597  Bitcoin / Hardware / Re: Best demonstrated efficiency: 71 Mhash/Joule on: July 29, 2012, 02:15:46 PM
For those who are not following Block Erupter: Dedicated Mining ASIC Project (Open for Discussion)

Update

Our RTL design, optimization and simulation are finished. We have some data to predict the specification of actual chips after they are manufactured.

Hashrate: 1.25GH/s per chip
Area: 17.5mm^2 per chip
Power Consumption: 13.3W

Note that they are calculated from the front-end design and not accurate enough. But of course the possible difference range won't be large. We will keep our updates.
1598  Alternate cryptocurrencies / Mining (Altcoins) / Re: [LTC] An (even more) optimized version of cpuminer on: July 28, 2012, 07:52:29 PM
If you start it in a console with --help it tells you this :

Usage: minerd [OPTIONS]
Options:
  -o, --url=URL         URL of mining server (default: http://127.0.0.1:9332/)
  -O, --userpass=U:P    username:password pair for mining server
  -u, --user=USERNAME   username for mining server
  -p, --pass=PASSWORD   password for mining server
  -x, --proxy=[PROTOCOL://]HOST[:PORT]  connect through a proxy
  -t, --threads=N       number of miner threads (default: number of processors)
  -r, --retries=N       number of times to retry if a network call fails
                          (default: retry indefinitely)
  -R, --retry-pause=N   time to pause between retries, in seconds (default: 30)
  -T, --timeout=N       network timeout, in seconds (default: 180)
  -s, --scantime=N      upper bound on time spent scanning current work,
                          in seconds (default: 5)
      --no-longpoll     disable X-Long-Polling support
  -q, --quiet           disable per-thread hashmeter output
  -D, --debug           enable debug output
  -P, --protocol-dump   verbose dump of protocol-level activities
  -c, --config=FILE     load a JSON-format configuration file
  -V, --version         display version information and exit
  -h, --help            display this help text and exit

So the most simple way is this :

minerd --url http://poolofyourchoice:9332/ --userpass yourusername:yourpassword
1599  Alternate cryptocurrencies / Mining (Altcoins) / Re: [LTC] An (even more) optimized version of cpuminer on: July 27, 2012, 09:38:50 PM
It is 8 individual mining threads, so 8 x 3.3khps = 26.4khps.
It is not possible to make all threads mine together because every step in calculating a hash is dependent on the previous one.
Well, maybe some little steps are possible to do in parallel, but keeping the threads in sync would cost much time and make overall hashing slower.
1600  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN] Litecoin - a lite version of Bitcoin. Launched! on: July 27, 2012, 07:03:01 AM
That would only work if the attacker first announces his attack.
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