An update on the unmodified gridseed under linux.

I'm running cgminer on Linux Mint 13 32-bit on a eeePC 1000AH netbook connected to an unmodified gridseed. After ~20 hours of operation:

Normal settings, 900 MHz

A: 400384 R: 4096 HW: 6

CG hashrate: 381.6 Kh/s
Effective hashrate: ~375.4 Kh/s

Didn't think there would be any suspense. At 900 I'm seeing about 380K. The pool fluctuates but the average appears to be right around 380K. It's been running for several hours now at 900, no HW errors, one rejected share.

Unmodified gridseed. Modified cgminer for gridseed from github. Standard options. Running on an eeePC 1000AH with Linux Mint 13.2.

Some further interesting observations.

Originally I was running the modified cgminer on my big beasty Windows machine for the unmodified gridseed. This seemed to work fine, and setting the clock to 850 resulted in low to no hardware errors. Setting the clock to 900 ended up usually on par with 850 after HW errors and such.

I've now been running it on linux on an old netbook I had lying around. Strangely enough, the gridseed seems to be doing better on linux. I have the clock set to 900 and it has been rock solid. At 950 it still generates too many HW errors to be useful in my opinion. The pool also verifies the better performance.

Has anyone else noticed this with their gridseeds/miner combos?

Yeah that was my point.

Well unfortunately markets aren't powered on faith. I'm not bitching or moaning.  I'm stating the obvious. Wave your rage all you want, you're not going to win against basic economics. You have a "currency" backed by a depreciating asset with the vast majority of coins in the hands of initial "investors" and early large miners. Worse, you have a single store that's placing artificial limitations on purchases that ensures only the largest players will be able to buy anything, a rapidly increasing currency base, and no discernible or efficient method for re-circulation.

There's another word to describe this kind of a setup, and it isn't currency.

But believe whatever you want. I'll just enjoy the show.

It's not whining when someone is bringing up legitimate economic concerns. If this paradigm is going to thrive then there has to be an economic incentive to mine and use GPUCoin vs. some other coin. Otherwise people aren't going to waste their time when there are other more profitable ways to spend their resources.

So far your results don't indicate you're getting the hashrate you think you are. In one screenshot it shows about 26 minutes of runtime with an accept of 259 and a reject of 19. In the next it shows about 17 hours of run time with an accept of 11935, a reject of 808 with 16 HW errors.

Here's a snapshot of mine running at 850 for approximately 3 hours:

 cgminer version 3.7.2 - Started: [2014-03-17 09:38:22]
--------------------------------------------------------------------------------
 (5s):361.6K (avg):361.6Kh/s | A:54912  R:768  HW:0  WU:2.5/m
 ST: 2  SS: 0  NB: 332  LW: 1771  GF: 0  RF: 0
 Connected to mine.coinshift.com diff 128 with stratum as user ...
 Block: ea422ecc...  Diff:235  Started: [12:28:20]  Best share: 15.2K
--------------------------------------------------------------------------------
 Pool management Settings Display options Quit
 GSD 0: 6D8B468C5650  850 MHz | 361.6K/361.7Kh/s | A:54912 R:768 HW:0 WU:2.5/m
--------------------------------------------------------------------------------
[2014-03-17 12:29:05] Submitting share 23aa84b0 to pool 0

Using your post times to define the length of time that your miner has been running, that's about 3 hours. Getting 63 accepted shares over a 3 hour period means your basically generating junk (unless you've fixed your difficulty to be ridiculously high).Most of your shares are either not validating or are encountering hardware errors.

If you're connected to a multipool, you should be seeing at least 120-180 accepted shares per hour. Over 3 hours you should see 360-540 accepted shares.

It doesn't. Cooling is not the the problem in scrypt only mode. You can remove the fan completely and in scrypt mode the heat sink will barely warm up. In fact, you can run scrypt without a heat sink at all. The power draw is so low in scrypt mode (approximately 7 watts without the fan) the chips don't even get toasty. Use the heatsink and fan to keep your beer cool.

The heat sink and fan are for bitcoin only/dual mode. That will heat things up (I haven't tested it myself, but others have reported a 60 watt draw).

Considering the number of people who have tried pushing these things to their limits, I seriously doubt claims that these things can be run at anything above 900 with any sort of efficiency. The people on this board aren't stupid. I'm waiting to see what this guy posts. I'm betting he'll have a hashrate of 450 kh/s but almost no submitted shares due to rejections and errors.

Hashrate doesn't mean jack if all you get is HW errors and rejects.

I've verified with my own experiments that 850 is about the best operating speed for the gridseed. Occasionally 900 can beat it. Anything above that and you get worse performance due to the large increase in HW errors.

1. Set clock to 850 and point to a relatively stable coin pool for 24 hours.
2. Set clock to 900 and point to the same pool.
3. Set clock to 950 and point to the same pool.

Verify your recorded hashrate with the submited shares of the pool. At 850 you get an effective hashrate of around 360 kh/s. At 900, you can sometimes get around 370 kh/s effective but usually it ends up about on par with 850. At 950 your effective hashrate drops below 300 as the greatly increased HW errors start wrecking havoc on your accepted shares rate. At 1000 all you're doing is destroying your gridseed (you're effective hashrate is basically 0).

This is with the gold gridseed using cgminer. Unless cgminer is doing something incorrectly with it's overclocking, I don't see how bfgminer is letting you clock to 1050 without any HW errors.

You'll need to supply more information than that if you want any useful responses.

1. What are the lights on the gridseed doing? Give on-off times.
2. Did you try disconnecting then reconnecting the gridseed?
3. Did you check your power supply and wiring? Is your power supply adequate? What mode are you running in?
4. Are you getting hardware errors? Is the device even hashing?
5. Post your miner configuration and miner output.

Ah, so none of the miners really report anything well about these devices. And the pools are notorious for their inaccuracy for hashrates as well.

I guess I'll have to dive into the schematics of the chip, the bios, and drivers to see if there's a way to do that. If the miner is reporting 380k and the pool is reporting 410k but I'm really only getting 300k, that's irritating to say the least.

One things for sure, the person with their clock set to 1000 is going to run into a lot of issues.

First, you're not going to get a stable 400k hash out of a gridseed. You'd need to be running at 950 to do that, and you'd be getting a number of HW errors if you did. I've been running pretty stable at 900 with a couple of HW errors but this gives about 380k. Most people run it at 850 which is around 360k.

This is what I use for cgminer:

cgminer.exe --scrypt -o yourpooladdress -u username -p password --gridseed-options=baud=115200,freq=900,chips=5 --hotplug 0

If you get too many errors, change 900 to 850.

With cgminer, you'll see a low WU. Ignore it (it's incorrect). If cgminer is showing a correct "A" count (depicted by A: in the output) but you're not seeing it on your pool, be sure you have the correct wallet address. A number of pools gladly accept "donations" from people with incorrect addresses.

If none of this applies to you, post sample output from cgminer so we can see what's going on.

Who me? Right now wafflepool.

I've ran mine at 900 for about 8 hours scrypt mining. I restarted a few hours ago to test 950 but it seemed like I was getting a couple of HW errors every few minutes then so I switched it back to 900. At 950 you can break 400 kh but I don't think that's enough to counteract the increased hardware errors.

At 900 it seems you get anywhere from 0 to 2 HW errors per hour. Also, with cgminer the WU is reported incorrectly. You'll see something ridiculously low (like less than 1/m), but the shares are being submitted correctly (verified on the pool website).

Absolutely no heat issues. PLan to keep my drinks cool with this thing in the summer. Running on an old 12v 3 amp power supply I had lying around.

 I restarted about a couple hours ago, so here's a snapshot since then:

 cgminer version 3.7.2 - Started: [2014-03-15 00:26:35]
--------------------------------------------------------------------------------
 (5s):383.5K (avg):379.1Kh/s | A:46080  R:0  HW:3  WU:0.6/m
 ST: 2  SS: 0  NB: 177  LW: 1220  GF: 19  RF: 0
 Block: a64a3886...  Diff:1.02K  Started: [02:45:53]  Best share: 48.2K
--------------------------------------------------------------------------------
 Pool management Settings Display options Quit
 GSD 0: 6D8B468C5650  900 MHz | 382.9K/379.2Kh/s | A:46080 R:0 HW:3 WU:0.6/m

If all you doing is scrypt mining, just about any old 12v power supply you have lying around will probably work. Max draw overclocked is around 10 watts, so even a 1 amp supply should work. I'm using an old microscope power supply that's 12v 3 amps and have had zero issues scrypt mining with an overclocked gridseed.

So if you're like me and just want to run a single one for testing just dig around your old electronics drawer/box. Just make sure it's (-)----(*----(+) and not (+)----(*----(-).

EDIT: I ordered mine from ZoomHash. They said it would ship on the 9th and it did. Arrived earlier today, set it up, and has been running ever since without issue. The only quirk I noticed so far is that if you want to switch what you're mining, it seems you can't just stop the miner and start it again. You need to disconnect then reconnect the USB cable. This is likely a software issue (driver or miner).

All exchanges are technically a bad idea. There are no laws or regulating authorities for these exchanges. There are no audits. There is no transparency. There are no rules stating they have to let customer's know of security breaches, bugs, or exploits. They could scam every single last person out of every single bitcoin they can, close up shop, and walk away and there would be nothing anyone can do about it. There are a million and one ways exchanges can scam you an you wouldn't even realize it until it was far too late.

Treat every third party wallet with caution. Keep only what you need there, and withdraw everything you don't. And for $DIETY's sake don't put any private information on these sites, especially given the terrible track record these sites seem to have in regards to security (not that there are any laws that require them to be secure). They want you to upload a photo ID, bank statement, and a bill to your current address? Tell ya what, just tell me your name and I'll see if I can low-ball the price for your identity on cheapamericanids.ru for ya.

Well, if it makes you feel any better, maintaining the idea behind the currency is likely to be far less profitable than cleverly scamming people. A plausible scenario:

With $50K, at least in the states, you could build a mining farm that generates as much as a decent job. Meanwhile, the online store opening gets delayed for "technical issues". After several false starts and delays, many people will just dump and leave. "Good idea, but poorly implemented. Oh Well." After this goes on long enough, the store finally opens. But now the coin price is so low that the GPU prices are astronomical. Maybe a few holdouts and hoarders can afford them, while everyone else would have to mine for a year or more to buy one. The store stays open for a bit, maybe even sells a few honest to goodness cards. But then the owner says he's forced to close up shop as it simply isn't profitable. He'll blame himself and apologize profusely for everything. "I failed, but at least I tried." Aww...too bad. Better luck next time.

Meanwhile, that sweet mining setup that venture capital bought is generating $30K-$50K per year in untraceable, untaxable income. And he didn't pay a dime of his own money for it.

That's just one of several different ways a scam could be perpetrated. And all of them with no repercussion to the scammer.

Now will this guy scam everyone? I have no idea. I don't know him. I've never met him. He could be nicest guy with the purest intentions or he could be a next gen Nigerian scam master. He could honestly want this thing to succeed and is working so hard on it he has no time to talk, or he could already be in Barbados gorging himself on hookers and blow.

The point is, in an unregulated anonymous market, one should be extremely careful where one places one's trust.

No. Then again, I'm not in life for the money.

I have a marvelous proof describing the life, the universe, and everything. Unfortunately this message is too small to contain it.