[GUIDE] GridSeed GC3355 5 Chip Setup/power/windows/linux/rpi by UnicornHasher

[dyland]

return GRIDSEED_HASH_SPEED * (double)elapsed_ms * (double)(info->freq * info->chips);

Cheater 

hey, it's not like I advertised a new way of speeding up those units set the chips variable to above 5 by mistake, was a bit puzzled by the results till I started digging.

Hold, on, so what does this mean exactly? That we can get 500+kHash on 744kHz?

[1715601792]

1715601792

[1715601792]

1715601792

[1715601792]

1715601792

[suchmoon]

return GRIDSEED_HASH_SPEED * (double)elapsed_ms * (double)(info->freq * info->chips);

Cheater 

hey, it's not like I advertised a new way of speeding up those units set the chips variable to above 5 by mistake, was a bit puzzled by the results till I started digging.

Hold, on, so what does this mean exactly? That we can get 500+kHash on 744kHz?

No, it's a bug in how cgminer displays hashrate. It seems that the actual hashrate is 5/8ths of that (~300 KH/s)

[sandor111]

The new LightningAsic controller firmware is released, please see: https://bitcointalk.org/index.php?topic=554542.0

[edonkey]

I'm on a Raspberry Pi running 10 GS units with the dtbartle version of cgminer that I built from sources. It's been running for about a week.

Today I noticed that Scripta was reporting that I have 16 devices when I only have 10. Further, it's telling me that I have hash power that is impossible.

When I go to the command line and ask cgminer to list the number of units, it comes back with the correct number of 10. However, when I run a little python script I wrote to get status from the cgminer API, it comes back and tells me that I have 16 devices.

I know that I can just bounce cgminer and it should get back to normal. But it would be nice if it would just work.

Again, this is the first time in a week that I've seen this. Although since I've been setting up and tweaking this rig, I don't think I've had cgminer running for more than a couple of days at a stretch. Currently it's been running for about 32 hours.

Any ideas, other than the obvious work around of restarting cgminer?

[suchmoon]

I'm on a Raspberry Pi running 10 GS units with the dtbartle version of cgminer that I built from sources. It's been running for about a week.

Today I noticed that Scripta was reporting that I have 16 devices when I only have 10. Further, it's telling me that I have hash power that is impossible.

When I go to the command line and ask cgminer to list the number of units, it comes back with the correct number of 10. However, when I run a little python script I wrote to get status from the cgminer API, it comes back and tells me that I have 16 devices.

I know that I can just bounce cgminer and it should get back to normal. But it would be nice if it would just work.

Again, this is the first time in a week that I've seen this. Although since I've been setting up and tweaking this rig, I don't think I've had cgminer running for more than a couple of days at a stretch. Currently it's been running for about 32 hours.

Any ideas, other than the obvious work around of restarting cgminer?

Most likely six of your devices disconnected and reconnected, cgminer correctly picked them up but also kept the old zombies. It's harmless, just the hashrate calculation is skewed. As for why this happened - maybe the hub is having issues. If you have a spare hub you can do some testing otherwise don't worry about it.

[edonkey]

Most likely six of your devices disconnected and reconnected, cgminer correctly picked them up but also kept the old zombies. It's harmless, just the hashrate calculation is skewed. As for why this happened - maybe the hub is having issues. If you have a spare hub you can do some testing otherwise don't worry about it.

Thanks for getting back to me. That's a good explanation. I don't have a spare hub at the moment, unfortunately.

I guess what I can do for now is look at the log for disconnect/reconnect events. That would at least confirm what's happening.

Too bad that cgminer and/or Scripta doesn't do a better job of reporting these issues. But as long as it's not trying to give work to zombies, I agree that's it's harmless.

Note that one of my GS units never shows the red LED on. Only the green LED is on. Searching indicates that that means this unit is not receiving 12 volt power.

If this one unit is really not receiving 12 volt power, then it must be powered by the USB bus. The USB hub is a powered Orico P10 U2. But under the hood these Orico's are actually have two hubs with different power characteristics. Perhaps the additional power draw of the bad GS unit is crapping out the sub-hub in the Orico.

I can probably experiment with moving the bad unit's USB cable to the other internal hub in the hopes that it will have less of an impact. Of course the real solution is to replace the unit. I'm working on getting an RMA.

[dyland]

somehow i was given UK plugs with my LA3M order.  

I'm in Canada (NA standard plug)--anyone know what my options are for the plugs?

[jamieb81]

somehow i was given UK plugs with my LA3M order.  

I'm in Canada (NA standard plug)--anyone know what my options are for the plugs?

cut it and make your own plug on it?

[suchmoon]

somehow i was given UK plugs with my LA3M order.  

I'm in Canada (NA standard plug)--anyone know what my options are for the plugs?

You can use something like this:

http://www.amazon.com/gp/product/B0080SE6H2

Or DIY as jamieb81 suggested.

[suchmoon]

Most likely six of your devices disconnected and reconnected, cgminer correctly picked them up but also kept the old zombies. It's harmless, just the hashrate calculation is skewed. As for why this happened - maybe the hub is having issues. If you have a spare hub you can do some testing otherwise don't worry about it.

Thanks for getting back to me. That's a good explanation. I don't have a spare hub at the moment, unfortunately.

I guess what I can do for now is look at the log for disconnect/reconnect events. That would at least confirm what's happening.

Too bad that cgminer and/or Scripta doesn't do a better job of reporting these issues. But as long as it's not trying to give work to zombies, I agree that's it's harmless.

Note that one of my GS units never shows the red LED on. Only the green LED is on. Searching indicates that that means this unit is not receiving 12 volt power.

If this one unit is really not receiving 12 volt power, then it must be powered by the USB bus. The USB hub is a powered Orico P10 U2. But under the hood these Orico's are actually have two hubs with different power characteristics. Perhaps the additional power draw of the bad GS unit is crapping out the sub-hub in the Orico.

I can probably experiment with moving the bad unit's USB cable to the other internal hub in the hopes that it will have less of an impact. Of course the real solution is to replace the unit. I'm working on getting an RMA.

I don't think it can hash at all without 12V. Is it even submitting shares? You should probably just disconnect it until you get a replacement.

[jamieb81]

Most likely six of your devices disconnected and reconnected, cgminer correctly picked them up but also kept the old zombies. It's harmless, just the hashrate calculation is skewed. As for why this happened - maybe the hub is having issues. If you have a spare hub you can do some testing otherwise don't worry about it.

Thanks for getting back to me. That's a good explanation. I don't have a spare hub at the moment, unfortunately.

I guess what I can do for now is look at the log for disconnect/reconnect events. That would at least confirm what's happening.

Too bad that cgminer and/or Scripta doesn't do a better job of reporting these issues. But as long as it's not trying to give work to zombies, I agree that's it's harmless.

Note that one of my GS units never shows the red LED on. Only the green LED is on. Searching indicates that that means this unit is not receiving 12 volt power.

If this one unit is really not receiving 12 volt power, then it must be powered by the USB bus. The USB hub is a powered Orico P10 U2. But under the hood these Orico's are actually have two hubs with different power characteristics. Perhaps the additional power draw of the bad GS unit is crapping out the sub-hub in the Orico.

I can probably experiment with moving the bad unit's USB cable to the other internal hub in the hopes that it will have less of an impact. Of course the real solution is to replace the unit. I'm working on getting an RMA.

I don't think it can hash at all without 12V. Is it even submitting shares? You should probably just disconnect it until you get a replacement.

It does not work without 12V why would we need PSU's if it would ^^

[CartmanSPC]

uhm....can someone explain this -

http://imgur.com/GHd4vYv  ?

Where was that originally posted?

here

Would you mind posting an updated screencap with a longer run time and details on your config?  That's a remarkable hashrate for only 744mhz...

-EMoomjean

There you go , http://imgur.com/eRItNxl .

So how did you achieve that?

And are you using

https://github.com/dtbartle/cgminer-gc3355/commits/master

or

https://github.com/girnyau/cgminer-gc3355/commits/master

?
(BTW, anybody knows which one of the two cgminer repos is better?)

I wouldn't say one is better than the other.

girnyau forked from dtbatle to add some additional freq and a per miner freq option (which is nice).

Since then dtbartle has taken out the hard coded freq and added stepping in increments of 25 and other stuff. Would be nice if he changed it to increments of 5.

Took a quick look at the code but it didn't look obvious to me how to do that.

Code:

		// Support frequency increments of 25.
		pll_f = info->freq / GRIDSEED_F_IN - 1;
		pll_f = MAX(0, MIN(127, pll_f));

If I could figure out stepping in increments of 5 I would fork dtbartle combining the per miner option of girnyau.

[CartmanSPC]

Ok, not sure where to post this so for lack of a better place I will put it here for discussion:

KNC is now specifying a MINIMUM of 250 Mh/s for 10K or $40 per 1 Mh/s! Compare that price to performance cost to the Gridseed 5 chip miners (360 Kh/s) and they should be selling for $14.40 each  

Supposedly KNC is shipping Q2/Q3 2014 but by that time they may increase the hashrate yet again (originally specified at 100 Mh/s about two weeks ago?).
If KNC wasn't a reputable company I would call BS.

I find myself hard pressed to order more Gridseeds at $165/piece  

Just had a thought...wonder if KNC announced their hash rates to slow down Gridseed sales? Would be interesting to know if it had an affect on the sale of Gridseeds and GPUs. I know it stopped me from buying more.

[dyland]

wolfey,

how much do you think I can overclock the gridseed by doing just the pencil mod and bridge mod? the last remaining mod is a bit out of my leage,

and you are a continent away so I cannot send them over to you that would be really not cost effective haha^^

The resistor mod is necessary to clock over 950MHz stably. Especially to even get 1000mhz to be stable and pretty much hw error free.
But, if you can do the solder bridge, you should be able to do the resistor replacement just as easily.

Best performance is with all 4 mods. That's just the way it is if you don't want to have to put up with red nuisances 'nonce's'

Wolfey2014

could you show me what resistor I can use or buy on ebay for example? I'm in Spain and here the local electronic shops are pretty hard to find.

http://www.jameco.com/1/3/resistor-1-8w

If there is anyone in the Toronto area with the expertise to perform these HW mods for me it is much appreciated. I will compensate of course. Also need help with setup. Have 10 units and rasp pi with cgminer already compiled. I am a total newb to pi and everything, read through threads a bunch of times but I need to save time on the weekend to be with my family.

[jamieb81]

Ok, not sure where to post this so for lack of a better place I will put it here for discussion:

KNC is now specifying a MINIMUM of 250 Mh/s for 10K or $40 per 1 Mh/s! Compare that price to performance cost to the Gridseed 5 chip miners (360 Kh/s) and they should be selling for $14.40 each  

Supposedly KNC is shipping Q2/Q3 2014 but by that time they may increase the hashrate yet again (originally specified at 100 Mh/s about two weeks ago?).
If KNC wasn't a reputable company I would call BS.

I find myself hard pressed to order more Gridseeds at $165/piece  

Just had a thought...wonder if KNC announced their hash rates to slow down Gridseed sales? Would be interesting to know if it had an affect on the sale of Gridseeds and GPUs. I know it stopped me from buying more.

That is actually a pretty good point and valid!

I can tell you it does slow down the gridseed sales. I know someone that was going to order an amount of 600 of them and is now going to buy much much less and invest it into pre orders.

I wish I could get them at 165$ but here in Europe it's more 165€ and above! more often 200 if you buy by the unti

[edonkey]

I don't think it can hash at all without 12V. Is it even submitting shares? You should probably just disconnect it until you get a replacement.

According to the cgminer API and Scripta, it is submitting shares. When I first noticed that the red LED was off this weekend, it appeared that that unit's utility numbers were down. But since it was working to some degree, I just left it running.

I just checked it again and it's performing roughly the same as all the other units.

It surprised me too that it would do *anything* without 12 volt power, but it appears to be working. Maybe it is getting 12 volts, but the LED isn't working. I know that there's nothing wrong with the 12 volt power cable because I checked it with a meter.

Anyway, after the zombie incidents yesterday and this morning, I managed to find an old, unused powered USB 2 hub. I moved the affected unit to that hub. Haven't seen any zombies since. Of course it hasn't been long enough to be definitive, so I'm keeping an eye on things.

[healthandwealth]

Not to be a troll...but after reading extensively on getting a gridseed setup...ROI looks to be 6-8 months...well after the high powered ASICs arrive.  Is buying gridseeds really worth it?

[suchmoon]

Not to be a troll...but after reading extensively on getting a gridseed setup...ROI looks to be 6-8 months...well after the high powered ASICs arrive.  Is buying gridseeds really worth it?

In a way it's a bet (and proven to be a fairly good one) that the aforementioned high-powered ASICs will be late. I think the saying is: a megahash in the hand is worth two in the bush (or something like that).

[jamieb81]

Not to be a troll...but after reading extensively on getting a gridseed setup...ROI looks to be 6-8 months...well after the high powered ASICs arrive.  Is buying gridseeds really worth it?

In a way it's a bet (and proven to be a fairly good one) that the aforementioned high-powered ASICs will be late. I think the saying is: a megahash in the hand is worth two in the bush (or something like that).

True and KNC will most certainly deliver late already as I've seen on the forums. Some kind of month were they don't work or so

[dyland]

I got EU power or something....is it OK if I use a ten amp 12.5V power cord with this setup that I have lying around? It has the bluish green, black and white wires just like the guide. thanks in advance.