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Observations:
Could have made the case longer and still fit in the rack. A longer case would be about enough room for 10 miners with fans on each row. 40 miners total.
Each power supply is more than enough to power 10 miners dual mining and one 10 port USB hub.
Case has enough room to fit 5 power supplies and about 5 USB hubs.
I will not be building this up further as newer (much) more powerful rack mountable scrypt miners are soon to be released. These 5 chip gridseed miners are too much of a pain to wire up and rack.
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Finally put it in the rack. Not the greatest wiring job since I was in a rush. Started to wire it up:  All wired up (missing one miner).  Back side: 
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Take advantage of it while you can hooliuk. When they see their electricity bill skyrocket expect some changes  |
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Is there any way to tell which Gridseed is not running at maximum speed using Sandor's cpuminer? For example, in this screenshot:
Gridseed #1 is running really slowly, which probably means that I need to either re-seat the heatsink or resolder the resistor. However, how do I determine which one is Gridseed #1? When I unplug the USB cable to a Gridseed, the UI doesn't update to let me know that it's dead, and every Gridseed looks like it's still hashing.
Try using cgminer to see if it still shows a slow hashrate. I found cpuminer 0.9a would sometimes report the wrong hash rate. Also, it was causing one of my miners (new one with LED lights) to continuously light up red. Not sure if that was the same one reporting a slow hashrate. |
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MWNinja,
Do you have a web site or should people PM you on here? Also, as for available watts I thought it was just Volts*Amps=Watts (ex: 208*60=12480). Where does the 1.73 come from?
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Just realized I can power the USB hub from the server PS as well |
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Sandor111 Thinking about giving your miner a try. Have you tried dual mining with this yet.Keep up the good work and thanks. It does not support dual mining. Maybe we should get a fund together to have him work on a dual mining version? |
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I could fit 10x 1TH/s miners plus a switch into a 42u rack but I have no idea if 8A (1.8KW) is enough power though  Not even remote close to enough power. You would need 12-16kW with modern hashing hardware. Agreed - 1.8kW is NOT enough for 2 miners  Yup, you need at least a 60A/208V circuit for a total of 12480W but most if not all DC's limit you to 80% of rated capacity so that gives you just under 10kW. |
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I am seeing huge swings in the predicted payout, which is normally spot on when a payout occurs because I verify it when I look at when I get paid.
My 100GH miner has fallen to .001 while my 180GH/s of miners is .008 to .010 which doesn't make sense for the 100GH/s miner.
I see the global pool is now 485GH/s.
It depends on when the last share was found by your 100GH miner. Expected payout will indeed swing around wildly as hash rates increase/decrease, share difficulties increase/decrease, shares drop off the payout list, etc. To see what I mean visit p2pool.smoothrunnings.ca:9332 I went to your node and see nothing wrong with the reported numbers. The payouts to each miner are determined by how many shares that miner has submitted in the given timeframe, and the weights associated to those submitted shares. As an example, I have 2 S1s running on my local node. Currently, my expected payouts show one with 0.02 and the other with 0.007. Both have been running for exactly the same time, but one has found more shares than the other. Why would you not run both S1's with the same payout address? That way their not competing with each other for shares on your node. I know in the long run it doesn't matter but still... ...or even just run each one with a non payout username so that all the shares go to your nodes payout address if you want to track the performance of each one separate. |
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I've searched for quite a bit, but is there a way to limit the number of Gridseed devices per cgminer instance in Windows? Say, calling devices 0-9 only per instance would be ideal. In testing my units average a higher accepted share rate when split amongst multiple instances.
--usb :10 ...I think |
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1)This is due to the KGW bug, that we would have to implement and launch an updated wallet.
You know what has to be done? Is there any other way to do this without transcoder, because i just dont see much action from his side at the moment. To save transcoder the time and effort someone could do a pull request of the code changes to fix the KGW bug (on github). He would then have to accept the changes after he reviews them. The alternative is a fork of the codebase but that should be a last resort. |
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Your pricing is good compared to Data Center A.
Cost from Data Center A (most expensive but the best in the area):
Full rack with 60A/208V and everything else is about $3400/month. 80% of that 60A is usable so 48A of usable power....or in watts about 10 kW usable.
3400/10 = $340/month per kW
3400/48 = $70.83/month per A
Does your offering include the full usage of the 20/30amps or do you limit to 80% of rated capacity?
I was trying to see if I can get pricing in the $150/month per kW or $31.25/month per A. Looks like you got close!
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Was wondering if anyone would be interested in hosting their mining rigs at a premier world-class datacenter?
I'm not referring to a "warehouse" hosting environment but a top tier datacenter with customers the likes of yahoo, financial institutions, etc. with proper cooling and security. They can run without utility power almost indefinitely if necessary and have done so for months at a time in the past (personal experience).
Currently getting quotes from a few of these type of data center. So far I have received a quote from the data center where I have been hosting all of my server and other equipment for over 8 years but they are on the high side.
Data Center A
$340/month per kW (ouch!)
Data Center B
$290/month per kW
Data Center C
pending
My goal is to get the price in the $150/month per kW (ex: AntMiner S2) but would anyone be interested?
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Have fixed the freeze/stuck when the TUI is enabled (atleast I hope so), Win/Rpi binaries have been updated. Also fixed the compiling issue some of you had with the curses libs.
Compiled and running...will check it in the morning. Do you think there is enough room at the top for per chip stats? Also if you could display the serial number that would be good for identifying miners. Just some suggestions You can track my stats here: http://xpool.net:9555/I'm currently the only miner there with 19 GS's. You can see just before I started using this new version I was testing dual mining there. It results in a lower scrypt hash rate and higher stale rate. Two of my miners are really slow on scrypt (50-120Kh/s) when dual mining. The rest are 300+. All of them are 360+ running just scrypt. I am impressed with their SHA performance though. Get about 11.8 Gh/s each. |
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i keep getting failed to open /dev/ttyACM0
I am running on Raspberry pi:
./minerd --gc3355=/dev/ttyACM0,/dev/ttyACM1,/dev/ttyACM2,/dev/ttyACM3,/dev/ttyACM4,/dev/ttyACM5,/dev/ttyACM6,/dev/ttyACM7 --freq=1000 --gc3355-autotune --url=stratum+tcp://usa-1.liteguardian.com:3335 --userpass=cxxx:x --retries=5
I have the same problem ... I'm using Kernel ... 3.10.37+ I don't have any ttyACM0 in my dev folder ... got 9 Blades connected thru 2 x 10 port usb hubs ... working well with cgminer ... Having exactly the same issue, am I forgetting something or is there a workaround? I had the same problem trying to use cpuminer after having just used cgminer. Could not get a listing of any ttyACM devices. Quick fix was to reboot and start cpuminer without first using cgminer. |
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Confirmed it was a bad barrel plug with the multimeter. I guess it teaches me to test these things before using them...so sad...not a bad looking paperweight but still What exactly was wrong with the barrel plug? polarity reversed? intermittent / flaky power? I'm having a hard time imagining what could go wrong with the barrel plug to make it burn out like that... I really don't know. Here is the series of events: 1. Newly wired PS (IBM 835w to 11 barrel plugs using 16AWG. This is the third one I have made.) 2. Not thinking to test by plugging in one miner at a time (like I did with the first two PS's) I wired up 10 pods to the PS and turned it on. 3. Spark bang smoke 4. Turned off the PS within 5 seconds. Think I was in shocked for a bit 5. Unplugged all the pods. Tried a different connector and PS to the damaged pod..nothing :/ 6. Tried the bad barrel plug in another pod...started to spark and smoke but I quickly disconnected it. It still works although you can see some black charring on it. Guess I lucked out on this one. 7. Replaced the barrel plug with another one and plugged it into a working pod....worked! 8. Wired up the remaining 9 pods to the power supply and all are working. Today at lunch I went home with the multimeter and used a known working PS and tested each barrel plug to see what voltage it was providing..they all came in at around 13-14v. It's a needle type multimeter so hard to say exactly. Unscrewed one of the known good barrel plugs and wired up the bad one. No reading on the connector end. Zero...tried to see if it was reverse polarity but still nothing. Pressed the probes onto the wires and it was good there...also good on the barrel plug screws. So I'm not sure what the deal is. Edit: If anyone with the skills to check would like the bad barrel plug to investigate let me know. I will ship it out USPS at my expense as long as your in the states. Not necessary. The internal part of the barrel is obviously shorted out, perhaps via a caved in or pinched barrel or mis-soldering / mis-wiring and or it's just a defective part that got through QC without being picked up on. It happens. From now on make darn sure you test all plugs and if needs be, jacks / receptacles with a DVM or the analog equivalent and use the 0 ohm or short test with beep when shorted so you know if it's open or short and verify voltage and polarity are correct with the proper meter setting. Yes it's DC not AC for you greenhorns  I have 99 male coaxial power connectors with screw on type wire terminals and they allow for testing in or out of circuit. Nice! I'll post pics of my new rig when she's all fired up and hashin in the cash!  Woof! Woof! Thanks Wolfey. You gave me the idea to check the bad plug for continuity. I set the multimeter to the dial position you use to calibrate it by touching the two probes together (0 ohm) to test the barrel plug. Well it looks like the "-" screw connector goes to the center of the plug !  The "+" screw connector does not get a reading at all on either the inside or outside of the plug. Checked the 16 remaining screw type barrel plugs I have left over and their all fine. Guess I had 1 out of the 50 that was bad. Soooo sad  |
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Confirmed it was a bad barrel plug with the multimeter. I guess it teaches me to test these things before using them...so sad...not a bad looking paperweight but still What exactly was wrong with the barrel plug? polarity reversed? intermittent / flaky power? I'm having a hard time imagining what could go wrong with the barrel plug to make it burn out like that... I really don't know. Here is the series of events: 1. Newly wired PS (IBM 835w to 11 barrel plugs using 16AWG. This is the third one I have made.) 2. Not thinking to test by plugging in one miner at a time (like I did with the first two PS's) I wired up 10 pods to the PS and turned it on. 3. Spark bang smoke 4. Turned off the PS within 5 seconds. Think I was in shocked for a bit 5. Unplugged all the pods. Tried a different connector and PS to the damaged pod..nothing :/ 6. Tried the bad barrel plug in another pod...started to spark and smoke but I quickly disconnected it. It still works although you can see some black charring on it. Guess I lucked out on this one. 7. Replaced the barrel plug with another one and plugged it into a working pod....worked! 8. Wired up the remaining 9 pods to the power supply and all are working. Today at lunch I went home with the multimeter and used a known working PS and tested each barrel plug to see what voltage it was providing..they all came in at around 13-14v. It's a needle type multimeter so hard to say exactly. Unscrewed one of the known good barrel plugs and wired up the bad one. No reading on the connector end. Zero...tried to see if it was reverse polarity but still nothing. Pressed the probes onto the wires and it was good there...also good on the barrel plug screws. So I'm not sure what the deal is. Edit: If anyone with the skills to check would like the bad barrel plug to investigate let me know. I will ship it out USPS at my expense as long as your in the states. |
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Ok Guys I have modded 19 Pods and Itest each one after I have done it.. Now got all 19 and I plugged them all in together for the first time after being successfully tested individually, anyway So I plugged them all in flicked the Powersupply switch and this is when I hear a small POP and flame like someone lit a match I INSTANTLY FREAKED OUT AND POWERED EVERYTHING OFF, OPENED THE POD in concern and this is what I see, I AM FURIOUS ANGRY as I HAVE TESTED EACH POD after I mod it and al worked perfect accepted shares NO HW and all perfect, but now that I plug the power in all of them I hear this POP and flames. Please tell me what may have gone wrong here, Not enough power on the PSU cable? But not enuough power should NOT make this burn up and POP the moment I flicked he switch right? Anyway can someone PLEASE tell me the 2 chips I burnt I really would like to repair this pod... Its a waste, I am lost as to why this occured. I am using Acritc Mx-2 Compound- NON CONDUCtIvE so this could not have caused a short. Please if someone can help me find these chips will be greatly appreciated. HERE IS THE PICTURE OF THE 2 BURNED OUT CHIPS, THEY LOOK THE SAME SHAPE AND SIZE. IT WOULD BE GOOD IF THEY WERE THE SAME CHIPS. https://www.dropbox.com/s/qymhbmgvu5raq1t/20140428_203015.jpgIf someone can also give me an idea how this may have happened, please remember I test each POD after I mod and wait for a few shares to be accepted before I screw it all back together and this went in flames the second i turned the power on ... I was thinking maybe I tightened it to tight and the copper heat sink touched something to short out? And no I have not used any copper shims yet. I had this happen to me last night but it was due to what I think was a bad barrel plug. I replaced the barrel plug and it worked with the power supply on a different pod. My pod looks almost the same as your picture Borrowing a multimeter from work to try and figure out what was wrong with the barrel plug as I don't see why/how it would be bad. Any ideas how this could happen? Haven't modded any of my pods but your post made me reply. I don't have the skills to repair it. If anyone would like to purchase my damaged pod please make me an offer Confirmed it was a bad barrel plug with the multimeter. I guess it teaches me to test these things before using them...so sad...not a bad looking paperweight but still |
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Ok Guys I have modded 19 Pods and Itest each one after I have done it.. Now got all 19 and I plugged them all in together for the first time after being successfully tested individually, anyway So I plugged them all in flicked the Powersupply switch and this is when I hear a small POP and flame like someone lit a match I INSTANTLY FREAKED OUT AND POWERED EVERYTHING OFF, OPENED THE POD in concern and this is what I see, I AM FURIOUS ANGRY as I HAVE TESTED EACH POD after I mod it and al worked perfect accepted shares NO HW and all perfect, but now that I plug the power in all of them I hear this POP and flames. Please tell me what may have gone wrong here, Not enough power on the PSU cable? But not enuough power should NOT make this burn up and POP the moment I flicked he switch right? Anyway can someone PLEASE tell me the 2 chips I burnt I really would like to repair this pod... Its a waste, I am lost as to why this occured. I am using Acritc Mx-2 Compound- NON CONDUCtIvE so this could not have caused a short. Please if someone can help me find these chips will be greatly appreciated. HERE IS THE PICTURE OF THE 2 BURNED OUT CHIPS, THEY LOOK THE SAME SHAPE AND SIZE. IT WOULD BE GOOD IF THEY WERE THE SAME CHIPS. https://www.dropbox.com/s/qymhbmgvu5raq1t/20140428_203015.jpgIf someone can also give me an idea how this may have happened, please remember I test each POD after I mod and wait for a few shares to be accepted before I screw it all back together and this went in flames the second i turned the power on ... I was thinking maybe I tightened it to tight and the copper heat sink touched something to short out? And no I have not used any copper shims yet. I had this happen to me last night but it was due to what I think was a bad barrel plug. I replaced the barrel plug and it worked with the power supply on a different pod. My pod looks almost the same as your picture Borrowing a multimeter from work to try and figure out what was wrong with the barrel plug as I don't see why/how it would be bad. Any ideas how this could happen? Haven't modded any of my pods but your post made me reply. I don't have the skills to repair it. If anyone would like to purchase my damaged pod please make me an offer |
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