Topic: [ANN][TAG] TAGMining.Com is now the official pool of Tagcoin! - page 12. (Read 45655 times)

^^^

The work of the master... all I can say!!!

Unbelieveable... I have never been able to run a card at I20... I  just get hardware errors everywhere... Unbelievable

EDIT - 620W from the wall[02:15 US Eastern time]

A certain 24Kilo's rig is up and running, really nice hash for stock clocks too!



Now to see what we can do with it.

[02:05 US Eastern time]: Live from Sydney.. or.. through Sydney! Tuning progress (the text below, not the image above)

975 / 1400 = 422kh @ ~74*C
1050 / 1500 = 455kh @ ~75*C
1080 / 1500 = 467kh @ ~75*C
1120 / 1500 = 482kh @ ~76*C
1145 / 1500 = 492kh @ ~77*C

(temps are avg of all 3)

Tuning Complete:

I'll see what I can arrange for a batch of dualminers. I'll start by offering readers of this thread to participate in a semi private group buy. Pay in bitcoin, order 300 or more units, shipped to me in the PH, coming from CN, then on to you guys. Those in the US may want to consolidate first to one person, then reship from there. Who's in? PM me, I won't post about this again. Hehehe. Power savings means a lot when you pay 0.35 per kwh.

They can indeed. NASA learned the hard way one time, lost an entire project due to a comma.

A few misplaced commas can be quite troublesome...

The devil is in the details... and the devil has had me most of the day... still not getting more than 10Kh/s per GPU... but I am not getting the big red screen... baby steps... baby steps...

EDIT - spoke too soon... RED SCREEN

EDIT - Email incoming to Vesper... the success was a fluke...

Can you PM or email me your /etc/bamt/cgminer.conf file, as well as your /etc/bamt/bamt.conf file? You can remove worker username/passwords if you want.

NOTICE TO JACKPOT SEEKERS:

After tearing my hair out trying to figure out why some people are not being included in the jackpot, I have stumbled across something in the MPOS code that explains it all:

Users who chose to be anonymous do not get recorded in the round tables with their user name, and therefore do not get tallied at the end of the week.

This means that you are being lumped in to a "anonymous" username count when I run my script to tally users.  It's not that you aren't being counted, but rather that you aren't being counted with your name.  There are a few possible ways to rectify this issue:

• I maintain a separate, private round stats page for each round that uses modified code to display anonymous users to an outside, unauthenticated URL parsing script.  I don't see this happening without at least a weeks work to set up and test.  Possible downtime.
• I implement an OAuth service so I can parse URL data as an authenticated user.  This would require heavy modification to the pool and to my code.  Maybe two weeks to research and implement the change.  Definite downtime.
• Miners who want to be eligible for the jackpot do not mine on the pool as an anonymous user.  Immediate effect and change, requiring no coding or downtime.

Going forward, if you want to be eligible for the jackpot, you need to not be an anonymous user.  If you win the jackpot, your username and TXID info get posted anyway.

Problem finally solved.  This has been eating at me all week.  I don't know why I didn't think of this before.  I will update the jackpot rules accordingly.

-Fuse

From what I can tell... BAMT seems to be refusing to write a .bin file...

OK... I managed to get the cards hashing at 2Kh/s by making a cgminer.sh file that I found on the internet... referred by the OP in the BMT thread... the cgminer.sh file deleted the .bin file... and started sgminer... but would not find my cgminer.conf file... and the .bin file it wrote has a different icon than the original .bins that came with BAMT.

As soon as I started to tuned the GPU's in cgminer/sgminer... the hardware errors went through the roof.

EDIT - Here may be something... I am getting an API fail whenever I run BAMT...

I have Asus 270X TOP's which flashed just fine. From what I've read on some forums, the .exe file which force-flashes the cards should force-flash all 270 Asus models.

Don't feel like an idiot mate, I can't have my friends say that about themselves. These cards are tricky sometimes. I have rigs which work great, and I also have mystery rigs with ghosts in them. It's a matter of finding the right settings. I'm perplexed also, and am convinced it's something simple.

I feel like total idiot... I have an identical set-up sitting on my bench in front of me except ASUS 270's instead of MSI 270's... and I cannot even get my cards to start...  

EDIT - BAMT recognises all my cards - 3 x ASUS 270

RE-EDIT - Did you flash the BIOS of your 270 ASUS... it would not let me update... the 270X's were as easy as you said.

MSI 270 (non-X) Brief Review

Test system (75w):
HW: ASRock 970 Ex4, Sempron 145, 2gb HyperX
OS: BAMT 1.3 w/sgminer 4.0.0 on 8gb USB
PSU: Seasonic Gold 1050w
Risers: USB
Ambient Room Temp: 30*C

GPU Tests, TC @ 24000, Power/Intensity @ 20:

Eng   / Mem / KH      / Watts / GPU Temp (stock cooler)
  955 / 1400 / 414kh / 140w / 73*C
  955 / 1500 / 418kh / 141w / 73*C
1050 / 1500 / 455kh / 154w / 74*C
1120 / 1500 / 475kh / 161w / 75*C
1145 / 1500 / 493kh / 167w / 76*C

(purple = stock engine clock, ie, "0")
(green = overclock setting)

Summary / Highlights

This is definitely a neat card. If you can get this for $220 or less, I say grab it. Up until now the ASUS 270 has had my nod due to how quiet it was--much quieter than other 270 cards, but not silent. MSI's TwinFrozr 4 cooler is astounding, it's what I would say all high-end GPUs should have. It's nearly silent, quieter than the ASUS, in fact nearly on par with the Prolimatech's sound output. For cooling, it does really well, keeping the card in the mid 70's while being overclocked in a warm room. The cooler also covers half of the memory chips, and halfway covers the remaining half.

What's most surprising isn't just the hashrate (1kh higher than any other 270), but it's the power usage! All other 270 & 270X's I've checked so far have used 175-180 when pushed to their limit. This card is drawing 167w max! This shows high efficiency, but also that there's likely room to pass into the 500's. With an 8w savings, times 5 cards, you're saving 40 watts.

Silent, super-efficient, and great looking: This is a must have.

I'll post pics of the rig when I get a chance.

Man... just venting, but that Rick James seller guy is a tool.  On two occasions today, I've caught him bashing on new sellers, only to stomp them down, or further his own sales.  I don't get into flame wars on threads, I don't think the trolling is worth it, but man I want this guy to go away.  What a complete lack of community relation skills and integrity.

I will never recommend his sales threads to anyone... ever.

/vent over

-Fuse

I have 50 USB ports being used by BE's right now, but if you think about it, that price isn't bad for what you're getting. You spend like 1.5-2k to get that much hash power now, but look at the power savings!! More than tenfold.

It's also in line with what other scrypt-asic companies are offering. For my usage/desires, I'd need many, many of these things. Many.. I'd want to basically use the same amount of power now (4800-7200watts) but increase my hash, which is what these would do.

With 4800 watts available, figuring 1.6w per device, that's 3,000 units. Can't do that without factoring computer power.. so let's see... 100w per computer, 10 computers, that's 1kw, which leaves 3.8kw, enough for 2,375 devices (10 computers). 2,375 of these devices running on 10 computers pulling 4800 watts is 166,250kh.



Of course I can't afford that many ($190k, not counting shipping/import fees).

But the power savings is awesome on these things..

According to another reviewer, it can dual mine at the same time. But it only does 500 mh/s BTC and 40 kh/s scrypt if you do that, and increases power consumption to 2.5 watts. If you make it mine just scrypt, like I'm doing now, it does 70 kh/s.

The Furies (red, blue and nano) do 2 gh/s, and even the Antminers do 1.6 gh/s. You'd buy this just to do scrypt.

Lowest price is for 300+ units at $79 USD.

So, if vesper gets 50 units, that would be 3500 kh/s at 75 watts, but it will cost you at least 3969 USD, probably more if we include shipping. Then you need a 50 port USB hub if you don't have one already, or a bunch of 10s. I'm getting a 18 port USB powered hub from this guy in Hong Kong (who I sold 40 Blue Furies to. hehe.)

I just need 250 more units from a bunch of other people.

Another guy in the thread confirmed dual mining at the spec'd rate. Wish I could get some of these lol.

Wow... thanks for the share, Dabs.  This is really interesting.  ROI would be a bit tricky on these though.  That would be the only thing holding me back.

So will it actually dual mine BTC and scrypt, or just one at a time?  If it was both, that would seal the deal for me.  I really like the GridSeed units, but like hell I'm going to drop 5 BTC on a unit right now.  I really do believe that this will be the year of the $5k-$10k Bitcoin.

-Fuse

That's a pretty slick device, I'd love to replace my 50 BE's with 50 of these lol.

I've got something that does 70 kh/s for only 1.5 watts.

Here is my review:
https://bitcointalksearch.org/topic/m.4709897

I'm thinking of doing a Group Buy. These will sell like Block Erupters and Furies did. Pricing makes it so that ROI is tricky, but at least power consumption is definitely a lot lower.

I can now imagine the other manufacturers... fibonacci, alpha-t, flower... We got 6 to 8 months before the ASICs hit. The one I have running now is real.

Don't fret, I will find a way to get your hash up. For what it's worth, I can only get the toxic 280x series to hit 800kh, my other 280x's waver between 700-740. What precisely is failing in bamt? Does it not see GPUs? Does it not load? Etc. Which BAMT are you using?


Optimum threadconcurrency is tricky. Here's what I would do to start (since you need a foundation), have cgminer go with stock clocks (engine/memory set to 0), set your intensity/power to 10. Now play with TC until you find something which is stable and increases hashrate (sometimes significantly, sometimes just a little bit). Track of what kh you find with TC. There's a few ways I find optimum TC:

Slow / tedious / reliable - This is what I do when all else fails

For super tricky cards or ones with failing hardware (basically this works from a safe/slow point, on up):
* Start at 4096 and go UP in multiples of 96
* Start at 4192 and go UP in multiples of 128

For everything else, the multiplication method (this works from an aggressive point, on down):
* Find the bus width of the card (I believe it's 256 for 270 series), multiply it by 64. 256 * 64 = 16384
* Bus width times 96, 256 * 96 = 24576

This method will give you an upper limit of what is likely the optimum. Now start from either of those points and go DOWN by multiples of 96. The way AMD drivers and hardware react in Windows vs Linux is different, which is part of the issue.

Fast TC attempts - this is what I usually do to start
Popular TC settings (try these right away):

24576
24000
16374
16000
8192
4192
4096

See what the kh is for these after the card settles for a couple minutes, and keep track of the kh. Now once you determine base kh, for each of these TC, try these settings while cgminer is running:

Engine: 1120, 1130, 1145
Memory: 1500

See which if these work best.


I have 4 weeks of vacation time sitting and doing nothing.. lol!

My other thought is this: Your ASUS cards likely need a force-bios-flash, as I documented on one of my other posts. If you haven't already done so, go to their website and punch up the 270 series and find the .exe file which is their new bios.. i think it's dated 12/10/2013 or something close to that. Do one card at a time, basically you just run the exe and it does the work in 10 seconds. When I did that, I opened up 100kh more hash power on my ASUS cards.

Also I can't emphasize this enough, during this testing, have an extra fan blowing at the cards, to help cool them, this will help stabalize things especially during the summer heat down there--while you're tuning. An extra sidenote, when you make a change, let it sit about 2 minutes before determining the hashrate. I've seen some cards take 1min or more to start going up in hash, sometimes they even go down before bottoming out and going up.

Booking a ticket now.  See you in 24 hours lol.

I think the trick for me was dropping the "-g" switch in the batch file.  Let me find that page...

Found it - https://bitcointalksearch.org/topic/m.4399407

So I still run with the "-g" switch, but I think I've bumped the GPU-Engine down a little for the Sapphire cards I run in my main rig now.  I keep all the pool and fan settings in the config file.  Just my preference, but I try to run with the minimal amount of settings and config options.  Less for me to mess up.

-Fuse