Ultra Under-overclock image for A2 Innosilicon by Emdje - V5.0 - page 9.

Marvell1

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Quote from: GWilkiejr on August 13, 2015, 09:08:07 AM

Thanks guys. I wound up using stock A2 Mega Terminator firmware - works good. Of the 10 machines I have I replaced 8 PSU's. Not cool. They were cheap-o 1000W PSU's not even 80 PLUS rated..... BOOO!!! Replaced with 1300 W EVGA 80PLUS Brozne. Everything is wonderful now. Thanks again!

bronze PSU's really ? so you are probbaly wasting (1200*1.15) = 1380 drawn from the wall ( which is even more terribe since you gain nothing from using a more 240v efficient power source.)

vs a 80 gold or PSU (1200*1.08) = 1296

thats a difference of 84 watts per hour/per UNIT.

remeber these boxes are not a typcial applicaint they run 24/7 so thats 1920 watts daily wastesed per unit per day multiply that by 10

you are throwing away 19200 watts a day . Not much on a daliy basis but it will add up .

I would suggest you put those PSUs up for sale and slowly replace them with 80 plus gold units as soon as you make each sale.

GWilkiejr

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Thanks guys. I wound up using stock A2 Mega Terminator firmware - works good. Of the 10 machines I have I replaced 8 PSU's. Not cool. They were cheap-o 1000W PSU's not even 80 PLUS rated..... BOOO!!! Replaced with 1300 W EVGA 80PLUS Brozne. Everything is wonderful now. Thanks again!

emdje

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Quote from: GWilkiejr on August 05, 2015, 03:24:29 PM

hey emdje I have a few new A2 terminators and am pulling my hair out. The Pi boots up fine. Lights on the boards blink then burn solid. I go to my browser and pull them up. They are hashing at a very low speed. I stop CGminer, and put in my settings. I start CGminer. The units do not respond, and they will not start. WTH??? I bought them brand new from zoomhash.

- Also I've been at this for 2 days now.... I've tried minereu and it works well on 3 machines. The other boxes... well I've tried stock, tweaked, and everything else. All with no luck. Any thoughts? Thanks.

Do you use them on wifi or cable? I have issues with the machines when on wifi.
What PSU are you using? Maybe that is underpowered.
Try a different pool, I have had pools that are veeerrrry slow responding, where it takes 2 hours before normal hash rate is reported.

Marvell1

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Put them back to the stock firmware or try the new one by Antz

CartmanSPC

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Quote from: GWilkiejr on August 05, 2015, 03:24:29 PM

hey emdje I have a few new A2 terminators and am pulling my hair out. The Pi boots up fine. Lights on the boards blink then burn solid. I go to my browser and pull them up. They are hashing at a very low speed. I stop CGminer, and put in my settings. I start CGminer. The units do not respond, and they will not start. WTH??? I bought them brand new from zoomhash.

- Also I've been at this for 2 days now.... I've tried minereu and it works well on 3 machines. The other boxes... well I've tried stock, tweaked, and everything else. All with no luck. Any thoughts? Thanks.

If they are brand new they are most likely A2 Mega Terminiators. Emdjes image does not work with them. I have an old A2 Terminator that works great and a new A2 Mega Terminator that it does not work with....saw the same thing you are seeing trying to use it.

GWilkiejr

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hey emdje I have a few new A2 terminators and am pulling my hair out. The Pi boots up fine. Lights on the boards blink then burn solid. I go to my browser and pull them up. They are hashing at a very low speed. I stop CGminer, and put in my settings. I start CGminer. The units do not respond, and they will not start. WTH??? I bought them brand new from zoomhash.

- Also I've been at this for 2 days now.... I've tried minereu and it works well on 3 machines. The other boxes... well I've tried stock, tweaked, and everything else. All with no luck. Any thoughts? Thanks.

emdje

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I received a board here with the serialnumber: 20140614, and it shows 8 chips on one board.

If you take off the small heatsinc, how many chips are on the board? (and make photo please)
The new A2's should have 12 chips.

@Marvell1: I burned my chip with testing my overclocked card. The heatsinc was somehow not properly screwed back on the board. The software should stop the board from becomming overheated, but I guess it went to fast. There was smoke after about ten seconds I turned it on.

MarkAz

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If it will help Emdje get the A2 Mega's working again, I'll cover shipping to him - it would be the least I could do. I'd love to run his image, but it doesn't work reliably with any of my machines.

Marvell1

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here are the pictures of my extra boards

as you can see they are in like new conndtion have the even been used ?!

rest can be seen on imigur

http://imgur.com/a/AfjWW

ntice the 8 pin connector ? i did some further testing and i found that with an 8 pin connector (those yellow things you see in one of my images) the board powers up. Ive not tested the remaining board but I assume it is the same deal.

If you want to pay shipping Emdje i can send you one of these boards so you could use it modify your image, these new boards seem to have a bit more overhead to run faster than the older ones with the proper cooling.

I'm also looking for a way to run more than six boards off one RPI, the issue is the controller board which only has six connectors for six asics. Is there any cabling out there i could use to daisy chain more than six boards to one controller ?

MarkAz

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Quote from: emdje on July 26, 2015, 03:47:05 AM

As I said earlier I don't really have a good image for the new A2's. If my image for the new terminator mini (which also is for the large one than) does not work, that you should revert back to stock.

Only the 'old' A2's are fully functional with my image.

The image I'm using for both my 88's and 110's is this one, it seems to work fine on either the 88 or 110, it just doesn't show the hash rate correctly in the web interface (it shows it as if it were a 110):

http://zoomhash.com/pages/a2-and-mini-a2-software-setup

specifically:

http://p.lewd.es/ltc-a2-20140919-lg-01-100m.img.gz

What files would I need to copy from your current image onto my image - just cgminer? Or are there other dependencies?

charles2k

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Quote from: Marvell1 on July 28, 2015, 12:47:05 PM

btw how did you manage to burn your boards ? they seem to run cool for me even with the 1200 frequency.

Which PCB version?
I found that PCB version 20140625 (aprox 2cm longer) has about 10% better efficiency on the same frequency in comparision with PCB V3 or V4.

Marvell1

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Quote from: emdje on July 29, 2015, 07:35:50 AM

Quote from: Marvell1 on July 28, 2015, 12:47:05 PM

I have some broken a2 12 chip blades, if I send you one and you can fix it could you update your image?

I received a broken A2 8 chip blade to fix my own broken one and I wasn't successful, but mine was pretty burned and I think more things are broken than just the chip.

Do you know what is broken on the blade? How many chips, components etc? If you could post photo's that would be awesome.

Blade looks fine, but it does not power up using the six pin connectors , not sure what the deal with it is i think the power connector is damaged not the blade physically, it seems pretty clean with no burns on it.

btw how did you manage to burn your boards ? they seem to run cool for me even with the 1200 frequency.

Another thing i would like to do is run these boards on a PI-2 and run more than six boards on a single controller.

I will post pictures of the board end of today so you can see and determine if it will be useful to you.

emdje

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Quote from: Marvell1 on July 28, 2015, 12:47:05 PM

I have some broken a2 12 chip blades, if I send you one and you can fix it could you update your image?

I received a broken A2 8 chip blade to fix my own broken one and I wasn't successful, but mine was pretty burned and I think more things are broken than just the chip.

Do you know what is broken on the blade? How many chips, components ect? If you could post photo's that would be awsome.

Marvell1

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I have some broken a2 12 chip blades, if I send you one and you can fix it could you update your image?

emdje

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Quote from: Hazcat on July 27, 2015, 05:54:40 AM

Hi just wondering if this will work with the A2 Mini Terminator? I have a few and would like to see what i can push from them

Most probably not. The image posted on the first page for the A2 Mini Terminator is not tested well, you might try it on one of your machines it is safe to try, but I don't think it will work great.

Hazcat

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Hi just wondering if this will work with the A2 Mini Terminator? I have a few and would like to see what i can push from them

emdje

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Quote from: CartmanSPC on July 24, 2015, 07:12:47 PM

Quote from: emdje on April 04, 2015, 04:50:24 AM

Quote from: nomoco on April 03, 2015, 03:48:14 PM

The cgminer works, but i don't have all the status and setup screens, and also there is no keyboard input possible.
This behaviour is most likely caused when you compile the binary without ncurses support.
So i ask you to compile the cgminer with ncurses support, is this possible...?
You just need the package "libncurses5-dev" installed on your build system, that should do the trick.

What do you mean with no status and setup screens and no keyboard input? Do you mean the webinterface or when you login?
Reason I ask is because I have had no issues with any of the builds I made, I test them before I release them.

Quote from: wolverine5pl on July 10, 2015, 09:29:11 AM

when using your versions I tried to start cgminer manually but I didnt had that top part of cgminer with stats, any idea why

I am having the same problem of not getting the Text User Interface when running cgminer manually. It just scrolls everything from bottom to top without being able to issue any keyboard commands. Have seen this before when compiling cgminer without libncurses5-dev (required for the text user interface).

I'm using the complete image of version 4.0 from here: https://mega.co.nz/#!zME2Va7b!lT3Gu6F0CL3i5ll0yl3SS2pn78NVpgZcJVITEnAyW9E

Also, it would be nice to have --failover-only and --no-submit-stale as options from the web UI...although it is easy enough to modify index.php

P2Pools work better with --failover-only and submitting stale.

P.S. Thank you emdje for all you have done. I just got a couple A2 Terminators (one older one that works with your image and a newer A2 Mega) and this thread has been helpful.

Thnx for the praise .

I haven't gotten around at working on the A2 image lately, and unfortunately the image on the machine I was using to build the software has failed on me. The latest modified source is on there, and need to get it off and on another image first before I can continue.
When I have time I will look make sure that the libncurses5-dev is installed before I build cgminer. Thnx for that tip.

emdje

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Quote from: MarkAz on July 24, 2015, 06:43:03 PM

I have a similar issue with both my A2 110mh, if I change the settings, cgminer starts and then stops a couple seconds later, and basically won't start again. If I power cycle the machine, then it seems to hash again with the correct settings.

Also, how can you reboot the machine remotely, and what's the superuser password? I tried via ssh, but the default pi/innosilicon which logs you in doesn't grand SU.

As I said earlier I don't really have a good image for the new A2's. If my image for the new terminator mini (which also is for the large one than) does not work, that you should revert back to stock.

Only the 'old' A2's are fully functional with my image.

CartmanSPC

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Quote from: emdje on April 04, 2015, 04:50:24 AM

Quote from: nomoco on April 03, 2015, 03:48:14 PM

The cgminer works, but i don't have all the status and setup screens, and also there is no keyboard input possible.
This behaviour is most likely caused when you compile the binary without ncurses support.
So i ask you to compile the cgminer with ncurses support, is this possible...?
You just need the package "libncurses5-dev" installed on your build system, that should do the trick.

What do you mean with no status and setup screens and no keyboard input? Do you mean the webinterface or when you login?
Reason I ask is because I have had no issues with any of the builds I made, I test them before I release them.

Quote from: wolverine5pl on July 10, 2015, 09:29:11 AM

when using your versions I tried to start cgminer manually but I didnt had that top part of cgminer with stats, any idea why

I am having the same problem of not getting the Text User Interface when running cgminer manually. It just scrolls everything from bottom to top without being able to issue any keyboard commands. Have seen this before when compiling cgminer without libncurses5-dev (required for the text user interface).

I'm using the complete image of version 4.0 from here: https://mega.co.nz/#!zME2Va7b!lT3Gu6F0CL3i5ll0yl3SS2pn78NVpgZcJVITEnAyW9E

Also, it would be nice to have --failover-only and --no-submit-stale as options from the web UI...although it is easy enough to modify index.php

P2Pools work better with --failover-only and submitting stale.

P.S. Thank you emdje for all you have done. I just got a couple A2 Terminators (one older one that works with your image and a newer A2 Mega) and this thread has been helpful.

CartmanSPC

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Quote from: emdje on July 17, 2015, 06:22:01 AM

The problem I encountered with starting trough putty is that once you disconnect, cgminer stops.

Use screen:

Code:

Use screen:
sudo apt-get install screen

screen -S ScreenName

"ScreenName" can be anything, it's just a name that you can use later to get back to it. Notice the use of a capital "S". This will give you a new shell. Start cgminer there.
Ctrl-A, then Ctrl-D will exit the new shell and will keep cgminer running.

You can now disconnect SSH etc.
To get back to your cgminer:
screen -r ScreenName

To verify that it's indeed running in the background use this:
ps auxwww | grep cgminer

Screen commands:
Ctrl + A + C:  Create a new SCREEN session.
Ctrl + A + N:  Switch to the Next screen session.
Ctrl + A + P:  Switch to the Previous screen session.
Ctrl + A + D:  Detaches a screen session (without killing the processes in it - they continue).

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