How would it be possible to setup merged mining for all SHA-256 based cryptocurrencies at once?

So that one could mine Bitcoin, Namecoin, PPCoin, Devcoin, Terracoin, Ixcoin, Freicoin simultaneously.

But I think things are actually going the other way: ASICs make mining easier (for those who have them). If it takes less effort to get the bitcoins, since the miner is more efficient, then that miner will be willing to sell at a lower price. To use your analogy, if you know a gold rush is coming (and the supply of gold will go up), then why would you buy now? You would offer a lower price in anticipation of the increased supply.

Hello,

I am going to buy some 7970's to do some bitcoin and litecoin mining. The hash rate per $ seems to match the 7850/7870 cards, so I figure I might as well just buy 7970's and get higher density and maybe better resale.

I know ASIC are coming. Someday... but I am going to jump in anyway because I can buy 7970's now and do litecoin if all else fails

Right now I am leaning toward the MSI 7970

Does anyone have any first hand experience with the different versions of the 7970? I am specifically trying to figure out which manufacturer and model of 7970.

I would welcome input from anyone who has mined them or who has other input about them.

Thank you,

Planman

[Monday, November 05, 2012] [05:56:27 PM] <coingenuity> absolutely, and if I can't get them to properly cover the parcel I'll quite possibly end up covering a portion of the loss out of pocket in replacements

This is the standing offer I made to Kris on the same day I was told by our insurance company that they'd likely be unable to cover the cost of replacement.

Yes, I flew off the handle a bit when I saw this thread: I worked Christmas Eve, Christmas Day, Thanksgiving, my birthday, and New Years' Eve, New Years Day, et cetera, both this year and last. I generally work 6 or 7 days per week, and get 8 hours of sleep perhaps two nights out of the month. Instead of taking care of my financial needs, I invest every spare cent back into the company and staff, and vicariously my customers. Just one example of that is me to this day driving a car that is past the age of majority for voting, having children, drinking etc in many countries. In any possible way I help the company's growth via minimizing my own expenditures, and increase customer satisfaction by having a larger amount and variety of inventory in our vaults. So between Kris not even emailing me about the offer I made him before posting here, combined with the countless sacrifices I make as a general rule to help my customers, I of course took his accusation and the inaccuracies of his account very personally.

-As I said before, out of thousands of shipments this has been our only failed claim to date. Our loss rates, claim-success-rates aside, are around 0.25%, which is exceedingly low. That's why I offered Kris some replacement metal happily in November.

I'm not quite sure what the uproar is about: Nearly 5 months ago I tried to open the door with him as far as my willingness to cover some, if not all, of the cost of his failed insurance claim.

Instead of taking me up on it, he just sent non-substantive IRC messages continually and posted on the forums complaining about 80btc. I'm re-extending that offer to him again, despite his less-than-truthful portrayal of events. As my long-term customers and peers will tell you, I tend to be a very reasonable person if you take the time to talk to me and will always bend over backwards to enrich Bitcoin in any way possible.

where can I find realtime chart like this ?

]
The comp in question is a dedicated mining machine (6870 + BFL for bitcoin), so I will give the -I 18 a try once my stress level decreases. Thanks for your help mate.

Someone is trying to monopoly the Terracoin supply. The price also reflex this purpose.
I think only someone with ASIC could beat this. This means that Terracoin will be die or continue rise.

no of course not.

simply notroll is 0.00043249 only
and coinotron is 0.00044154 AND 0.00022077 for getwork

Just a few notes about cgminer that seem to be forgotten with scrypt...

Changing vectors does nothing.
Default lookup gap is 2, so setting 2 or 0 does nothing.
Default gpu threads are 2, so setting 2 does nothing.
Setting thread concurrency overrides shaders, so if you set thread concurrency, setting shaders does nothing.
Intensities over 13 for 79x0 just drops the hashrate or generates garbage so don't do that.
Magic core:mem ratios seem to be entirely hardware dependent: motherboard/CPU/GPU combos change it even for the same 79x0 device.
Magic core:mem ratios work much better on windows. On linux they don't seem to be anywhere near as effective.
Running CPU frequency scaling on linux (or the equivalent on windows) will slow down your GPU hashrate a little, so set your CPU to maximum performance equivalent.

This rate is calculated for getwork pool where share difficulty = 16.
Stratum diff is 32.

why do I have only 50.0Kh/s with a 5870 with this command?
(with BTC = 400Mh/s)
I think it should be more...

Checked a minute ago, it works well

Would CGminer allow me to raise the thread concurrency over to 16384 on a 2gb 7870, while the 7970 uses 8192 as thread concurrency? I know different intensity vlaues can be launched, that is fine. But in order to have 19ish intensity, i HAVE to raise the thread concurrency a lot. As far as I gathered, it is either shaders or thread concurrency that drives the amount of memory being allocated for certain intensity's without overwriting the already used ram data.

Can you give me an example of two separate configs for two cards please?

It looks like 200GH came from one source, up and down. Only ASICs can do that.

The question is, how difficult it is to retarget a ASIC miner from BTC to TRC?

Finally I could decently mine my 7850 with this configuration:

worksize 256
aggression 16
threads_per_gpu 1
sharethreads 18
lookup_gap 2
gpu_thread_concurrency 8500

This is what i got:

354,2 kH/s, shares 123:3, stale 2,362%, GPU errors 0,07252%, ~348,139 kH/s

Must stale and GP errors be 0?

Thanks!

One thing is for sure, different shader amounts of different cards in one machine are not a good idea.

I can't for the love of god can make my 7970 work alongside a 7870 properly. The problem is NOT with the 7970, that hashes away 700-750 perfectly.

The issue is with 7870. It stops around 350khash, although when I set intensity in cgminer to 20, it'd reach 420ish, but then I get constant hardware errors. Hell, I even have HW errors ate Intensity 14, even on 13, if the shader amount is 2048, as specified for the 7970. Multiple shaders amounts tried, did not help.

The problem is, reaper works fine with only the 7870, it hashes 400 stable, but it resets the display driver every 20-25 minutes, maybe sooner. Can I raise stability somehow there? It does reset the display even on default clocks, when I'm not aiming for the best hashrate to be found... Intensity 19 and 20 seem to just kill the driver, although there is NO hw error with reaper, because it can handle the larger than 8192 thread concurrency.

I would not have a problem mining one card with cgminer and the other with reaper, but this reset thingie is not good. I am using 12.8 at the moment I believe, should I try to go for the beta drivers?

Any advices? Also, my peak performance on the 7970 comes when I'm 1660memory and 1000 core. Not lower, as most people experience :/

Also, did anyone undervolt 7870 and to what extent? I think 1.2 is a lot compared to the 1030 my 7970 can handle.

Maybe must I try cgminer instead of reaper for my 7850?