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

[miaviator]

Here's what my Scripta+RasPi+Andareed's cgminer looked like when I tested it Friday:  http://imgur.com/38OUKz5

I've stopped that setup for today as I'm trying to spend some time to isloate why that 1 miner in the dashboard seems to throw way more HW errors than the rest.  Maybe a bad cable, port, or something else...

Please post if you figure it out. One of my miners is also throwing more HW errors than the others when I run at 850. At 800 I rarely get any HW errors. I am guessing the one miner just is not that strong.

After eliminating cables and power there is the fact the boards and chips are all slightly different grades or qualities.  Same thing with GPU's you should tune them individually.  I really wish there was an easier way to clock them in 1Mhz increments.

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[worldlybedouin]

After eliminating cables and power there is the fact the boards and chips are all slightly different grades or qualities.  Same thing with GPU's you should tune them individually.  I really wish there was an easier way to clock them in 1Mhz increments.

Yep, I assumed as much...I have 5 "identical" MSI 7950's and each of them has their own "personality"...so my cgminer.conf is setup to take that into account.

How do you set config settings on an individual level?  I presume via minerd? 


How do you keep track of which miner is which USB device?  It seems that each time the RasPi starts up they get all "mixed" up so ACM0 is now ACM9 some such.  Or am I completely dumb?

[worldlybedouin]

Here's what my Scripta+RasPi+Andareed's cgminer looked like when I tested it Friday:  http://imgur.com/38OUKz5

I've stopped that setup for today as I'm trying to spend some time to isloate why that 1 miner in the dashboard seems to throw way more HW errors than the rest.  Maybe a bad cable, port, or something else...

Please post if you figure it out. One of my miners is also throwing more HW errors than the others when I run at 850. At 800 I rarely get any HW errors. I am guessing the one miner just is not that strong.

Ok, so I've confirmed its NOT any of the following:

- USB cable // swapped out several and no change
- Power cable // swapped out several and no change
- USB Port // swapped ports and no change -- also tried putting "good" miners on this port and they performed just fine

So I think miaviator hit it on the head -- each chip has it's own ability and as such should be tuned individually.

[workshop35]

whats the deal with the low WU? I've just noticed that on mine and it seems that everywhere I look people's WU is nowhere close to their hash rate. All of my gpu miners have been around 95% WU to khash.

https://i.imgur.com/ktS4RHC.jpg

Here's a shot of a couple of my gpu's.

https://i.imgur.com/9Trf6Bj.jpg

Is this an asic thing?
 

[worldlybedouin]

whats the deal with the low WU? I've just noticed that on mine and it seems that everywhere I look people's WU is nowhere close to their hash rate. All of my gpu miners have been around 95% WU to khash.

Is this an asic thing?
 

Here's my cgminer running 10 Gridseeds:  http://imgur.com/Lw7jEIK

Truth be told I never learned exactly what WU meant...so if you're inclined to explain I'd appreciate it.

[miaviator]

After eliminating cables and power there is the fact the boards and chips are all slightly different grades or qualities.  Same thing with GPU's you should tune them individually.  I really wish there was an easier way to clock them in 1Mhz increments.

Yep, I assumed as much...I have 5 "identical" MSI 7950's and each of them has their own "personality"...so my cgminer.conf is setup to take that into account.

How do you set config settings on an individual level?  I presume via minerd? 


How do you keep track of which miner is which USB device?  It seems that each time the RasPi starts up they get all "mixed" up so ACM0 is now ACM9 some such.  Or am I completely dumb?

That is a great question!

Here is something easy to script on startup using a lot of the scripts in the linux section of the OP.

Code:

ls -la /dev/serial/by-id/usb-STMicroelectronics_STM32_Virtual_COM_Port_8D*

/dev/serial/by-id/usb-STMicroelectronics_STM32_Virtual_COM_Port_XXXXXXXXXXXX-if00 -> ../../ttyACM0

Which shows all gridseeds there serial number and their com port.

Code:

ls -la /dev/serial/by-path/

Which shows all devices by path.  Path can be hard to decipher unless you see it visually:

Code:

lsusb -t 

Shows all usb devices in a bus/device tree.

Using the above device by serial number code you can mine and program each instance separately with something like mine-SERIALNUMBER.sh which contains:

Code:

#!/bin/bash
cd /home/miner/cpuminer
screen -dmS $1 ./minerd --options --options -G /dev/$i 
sleep 1

then modify this to kick them off and tie the serial number to the device:

Code:

for i in ` ls -1 /dev/ttyACM* | cut -d "/" -f 3`
do
echo "Device: $i"
echo -n "Is at serial: "
ls -la /dev/serial/by-id/ | grep $i | cut -d "-" -f 2|cut -d "_" -f 6
SERIAL=`ls -la /dev/serial/by-id/ | grep $i | cut -d "-" -f 2|cut -d "_" -f 6`
echo ./mine-$SERIAL.sh $i 
done

I think I'll write all of my miners to use that system now that you mention it.

 

[workshop35]

whats the deal with the low WU? I've just noticed that on mine and it seems that everywhere I look people's WU is nowhere close to their hash rate. All of my gpu miners have been around 95% WU to khash.

Is this an asic thing?
 

Here's my cgminer running 10 Gridseeds:  http://imgur.com/Lw7jEIK

Truth be told I never learned exactly what WU meant...so if you're inclined to explain I'd appreciate it.

from my google searches before I posted this:

"cgminer WU is the Work Utility defined as the number of diff1 shares work / minute"

so pretty much what that means to me is it's the work submitted to the pool, the higher the better. The low WU numbers would seem like it's not submitting much completed work back to the pool unless I'm missing something...

[miaviator]

whats the deal with the low WU? I've just noticed that on mine and it seems that everywhere I look people's WU is nowhere close to their hash rate. All of my gpu miners have been around 95% WU to khash.

Is this an asic thing?
 

Here's my cgminer running 10 Gridseeds:  http://imgur.com/Lw7jEIK

Truth be told I never learned exactly what WU meant...so if you're inclined to explain I'd appreciate it.

from my google searches before I posted this:

"cgminer WU is the Work Utility defined as the number of diff1 shares work / minute"

so pretty much what that means to me is it's the work submitted to the pool, the higher the better. The low WU numbers would seem like it's not submitting much completed work back to the pool unless I'm missing something...

there is some rule about waiting a few days for WU to get a decent average.

[worldlybedouin]

After eliminating cables and power there is the fact the boards and chips are all slightly different grades or qualities.  Same thing with GPU's you should tune them individually.  I really wish there was an easier way to clock them in 1Mhz increments.

Yep, I assumed as much...I have 5 "identical" MSI 7950's and each of them has their own "personality"...so my cgminer.conf is setup to take that into account.

How do you set config settings on an individual level?  I presume via minerd? 


How do you keep track of which miner is which USB device?  It seems that each time the RasPi starts up they get all "mixed" up so ACM0 is now ACM9 some such.  Or am I completely dumb?

That is a great question!

Here is something easy to script on startup using a lot of the scripts in the linux section of the OP.

Code:

ls -la /dev/serial/by-id/usb-STMicroelectronics_STM32_Virtual_COM_Port_8D*

/dev/serial/by-id/usb-STMicroelectronics_STM32_Virtual_COM_Port_XXXXXXXXXXXX-if00 -> ../../ttyACM0

Which shows all gridseeds there serial number and their com port.

Code:

ls -la /dev/serial/by-path/

Which shows all devices by path.  Path can be hard to decipher unless you see it visually:

Code:

lsusb -t 

Shows all usb devices in a bus/device tree.

Using the above device by serial number code you can mine and program each instance separately with something like mine-SERIALNUMBER.sh which contains:

Code:

#!/bin/bash
cd /home/miner/cpuminer
screen -dmS $1 ./minerd --options --options -G /dev/$i 
sleep 1

then modify this to kick them off and tie the serial number to the device:

Code:

for i in ` ls -1 /dev/ttyACM* | cut -d "/" -f 3`
do
echo "Device: $i"
echo -n "Is at serial: "
ls -la /dev/serial/by-id/ | grep $i | cut -d "-" -f 2|cut -d "_" -f 6
SERIAL=`ls -la /dev/serial/by-id/ | grep $i | cut -d "-" -f 2|cut -d "_" -f 6`
echo ./mine-$SERIAL.sh $i 
done

I think I'll write all of my miners to use that system now that you mention it.

 

WOW!  I didn't realize the scope of the question I asked.  Ok, I think this is the part where I say, "That's way over my head!"

[CartmanSPC]

whats the deal with the low WU? I've just noticed that on mine and it seems that everywhere I look people's WU is nowhere close to their hash rate. All of my gpu miners have been around 95% WU to khash.

Is this an asic thing?
 

Here's my cgminer running 10 Gridseeds:  http://imgur.com/Lw7jEIK

Truth be told I never learned exactly what WU meant...so if you're inclined to explain I'd appreciate it.

from my google searches before I posted this:

"cgminer WU is the Work Utility defined as the number of diff1 shares work / minute"

so pretty much what that means to me is it's the work submitted to the pool, the higher the better. The low WU numbers would seem like it's not submitting much completed work back to the pool unless I'm missing something...

Thanks. Here is my cgminer running 10: https://i.imgur.com/Jq5imub.png
Running for about an hour. You can see the one with HW of 10.

5 on one power supply is using 0.80 amps/49.3-50.4 watts (fans on - power supply model 11PWR002-360W).
10 on one power supply is using 1.40-1.45 amps/90.5-95.1 watts (fans on - power supply model 11PWR002-360W).

Going to wire up 10 more on a second power supply....which brings up an interesting question. What are the miners with over 10 USB devices doing about the display of so many in cgminer? Guess I'll just have to maximize my SSH screen. Not a bad problem to have.

[MZD]

[1970-01-01 00:00:19] USB bus not found, try to open the USB controller power


Has one of my USB hubs shit itself? The other one shows all miners just fine....this one doesn't show any.

[jmordica]

Has anyone been able to get the cgminer 3.7.2 (for gridseed) to work in linux instead of windows like what is shown here? http://cryptomining-blog.com/1262-download-cgminer-3-7-2-for-windows-scrypt-mining-on-gridseed-5-chip-gc3355-asics/

Thanks.

[CartmanSPC]

Has anyone been able to get the cgminer 3.7.2 (for gridseed) to work in linux instead of windows like what is shown here? http://cryptomining-blog.com/1262-download-cgminer-3-7-2-for-windows-scrypt-mining-on-gridseed-5-chip-gc3355-asics/

Thanks.

Yes, it appears to be working great. See my screenshot a few posts up.

[xminer2014]

Has anyone been able to get the cgminer 3.7.2 (for gridseed) to work in linux instead of windows like what is shown here? http://cryptomining-blog.com/1262-download-cgminer-3-7-2-for-windows-scrypt-mining-on-gridseed-5-chip-gc3355-asics/

Thanks.

Yes, it appears to be working great. See my screenshot a few posts up.

If there are some interest, I can add the forked cgminer to coinst (https://litecointalk.org/index.php?topic=15312.msg121778#msg121778).

[Flep182]

That would be awesome!

Does that run on a raspbian too?

[xminer2014]

That would be awesome!

Does that run on a raspbian too?

It should run on all Linux flavour, but needs testers on different distros to iron the bugs out, emerge (Gentoo) and apt (debian, ubuntu) based distros should be working, RPM based is not tested, and if there are enough interest, I can do OSX/Windows(cygwin/mingw) part with help from people with those OS.

The coinst installer itself is just a simple bash script making use of ncurses/kde/gtk, so you can verified the code and it will run on anything which has bash v4 (no support for other version and opther shells).

[Number6]

I got two of these coming to test out, if they work out I will be buying many more.

Anyway, can someone please confirm for me that these plugs will work? http://www.radioshack.com/product/index.jsp?productId=2103614

It says they are 2.1mm inside and 5.5mm outside, and from what I read that should be the correct "snug" fitting measurements?

I plan to take an old 12V 5A DC brick I found and covert it to have two plugs for my initial testing.

I will look into more cost effective options when I order more Gridseeds, but I just want to have the right parts on hand for when my units arrive.

[wolfey2014]

I got two of these coming to test out, if they work out I will be buying many more.

Anyway, can someone please confirm for me that these plugs will work? http://www.radioshack.com/product/index.jsp?productId=2103614

It says they are 2.1mm inside and 5.5mm outside, and from what I read that should be the correct "snug" fitting measurements?

I plan to take an old 12V 5A DC brick I found and covert it to have two plugs for my initial testing.

I will look into more cost effective options when I order more Gridseeds, but I just want to have the right parts on hand for when my units arrive.

Yes, that should do it. I'm using both 2.5 and 2.1. 2.1 fits a bit more snugly, which is a good thing IMO.
Wolfey2014

[Number6]

I got two of these coming to test out, if they work out I will be buying many more.

Anyway, can someone please confirm for me that these plugs will work? http://www.radioshack.com/product/index.jsp?productId=2103614

It says they are 2.1mm inside and 5.5mm outside, and from what I read that should be the correct "snug" fitting measurements?

I plan to take an old 12V 5A DC brick I found and covert it to have two plugs for my initial testing.

I will look into more cost effective options when I order more Gridseeds, but I just want to have the right parts on hand for when my units arrive.

Yes, that should do it. I'm using both 2.5 and 2.1. 2.1 fits a bit more snugly, which is a good thing IMO.
Wolfey2014

Thanks, that is what I was looking for.

I agree, I think snug fitting is better long term both for electrical and physical reasons.

Follow-up question, if I plan to mine scrypt only, my 12V/5A power supply should be able to comfortably power up to 5 of these if I understand correctly? Basically from what I read, it seems each will pull around 0.5A and using a margin of 1A each allows a generous overhead.

I will probably look into the modifying a old computer PSU once I scale up, but for now I just want to be sure I am clear on the specifics.

[wolfey2014]

I got two of these coming to test out, if they work out I will be buying many more.

Anyway, can someone please confirm for me that these plugs will work? http://www.radioshack.com/product/index.jsp?productId=2103614

It says they are 2.1mm inside and 5.5mm outside, and from what I read that should be the correct "snug" fitting measurements?

I plan to take an old 12V 5A DC brick I found and covert it to have two plugs for my initial testing.

I will look into more cost effective options when I order more Gridseeds, but I just want to have the right parts on hand for when my units arrive.

Yes, that should do it. I'm using both 2.5 and 2.1. 2.1 fits a bit more snugly, which is a good thing IMO.
Wolfey2014

Thanks, that is what I was looking for.

I agree, I think snug fitting is better long term both for electrical and physical reasons.

Follow-up question, if I plan to mine scrypt only, my 12V/5A power supply should be able to comfortably power up to 5 of these if I understand correctly? Basically from what I read, it seems each will pull around 0.5A and using a margin of 1A each allows a generous overhead.

I will probably look into the modifying a old computer PSU once I scale up, but for now I just want to be sure I am clear on the specifics.

Yep, sounds like you're in the ballpark.
Good luck with it and remember, do this at your own risk.