Quote from: HF-Engineer on February 06, 2014, 02:56:31 AM

,

Quote from: kenpofighta on February 05, 2014, 04:25:50 PM

I was getting great performance when my 3 BJ's arrived. At least on two of them, there was one that seemed a bit flakey and seems to be getting worse. All 3 seem to be getting worse. One of them keeps shutting down and restarting grabbing a new ID each time. I posted a small capture from my monitor so that maybe if others have had this and fixed it they can help. This one that is flaky was delivered in poor condition, all but one screw was sliding around the inside of the box and 4 risers that prop the board up were also floating around. I though the board was damaged and it may be. Worst assembly I have ever seen and I used to build PC's. That point is mute if they all work but they don't.

Here is what I need help answering.
1. How do I get back to my 400+ GH performance. All three of these were pushing +-420GH.
2. Worse case scenario is how do I raise the clock speed to get up to the 400GH range? I was promised by Erin at Hashfast that it would not void the warranty but the delivery paperwork stated otherwise. I will have to deal with that warranty issue separately, I know.
3. I seem to be getting huge error rates, I think it is on the flaky board but not 100% sure that is the only place. 70% to 80% errors are common. Elgius reports I am only getting 900 to 950 GH/s AVG with 3 boards and I should be getting closer to 1200. Not good for profits. Any help would be appreciated. I hate to try and send a board back under warranty since I might be stuck for months. I still am waiting on my 3 upgrades, I would hat to be down to 2 processors if I can avoid it.

Sorry about the loose parts. The problem wasn't bad assembly, it was the parts coming loose during shipping. They are using threadlock now to stop that problem. It's unlikely your boards are damaged if they are hashing on all 4 die, which sounds like they are.

What are your die temps and voltages? (if you run the "hf" version of cgminer it reports all dies/voltages)

Since your unit obviously had quite a ride during shipping, I'd look at each die temp and see if there is a discrepancy. You might need to take the cooler head off, re-grease the thermal interface, and re-tighten the cooler. Apparently some of those earlier orders that had loose standoffs have a high chance of having a loose cooler.

Also, what hash clock speed are you using? Have you tired other speeds?

-Phil

Thanks for your time Phil, I know this is on your own and a favor to the newly create Hashfast community.

By the way, I would love to try other speeds but I am not sure how to adjust them and its all pretty hush, hush it seems. Before I ordered I was told I would be able to overclock without voiding my warranty but now I am worried about doing it based on paperwork received. I may try it on the machine that is struggling anyway if someone will tell e how. I run the machine headless so there seems to be little access. If you can email me instructions to overclock that would be great. kenpofighta at gmail dot com.

Details from the struggling miner: (You can see it stop an id and start new ones throughout the day, error rates stay around 80%. Seems 2 cores are much cooler than the other 2)
cgminer version 3.9.0h2 - Started: [2014-02-05 16:45:10]

(5s):322.7G (avg):367.5Gh/s | A:1038456 R:7040 HW:13622629 WU:5999.8/m
ST: 2 SS: 0 NB: 38 LW: 1772615 GF: 0 RF: 0
Connected to stratum.mining.eligius.st diff 128 with stratum as user 1Bk9VSwaXn9UhpdowTwHEPEWw95i5F7N2_Miner2
Block: c019bc52... Diff:2.62G Started: [22:23:14] Best share: 699K

[P]ool management Settings [D]isplay options [Q]uit
HFA 2: 61C/.23V796C/.23V1429C/.26V661C/.23V OFF /40.21Gh/s | A: 96447 R:1472 HW: 1362431 WU: 650.5/m
HFA 4: 75C/.80V 77C/.80V 62C/.82V 61C/.82V 368.7G/369.1Gh/s | A:810420 R:4800 HW:10748045 WU: 6021.6/m

Here are stats from Eligius (I boke them down by naming the miners so that I could better analyse the data about 4 hours ago, Miner 2 is the struggling miner)
Miner2   3 Hours      214.79 Gh/s   540096
    22.5 Minutes   196.28 Gh/s   61696
Miner1   3 Hours      400.76 Gh/s   1007744
    22.5 Minutes   416.19 Gh/s   130816
Miner3   3 Hours      387.32 Gh/s   973952
    22.5 Minutes   374.65 Gh/s   117760

I have the stats for the other two below for comparison. These units all sit side by side in the same room and run about the same regardless of how cool I keep the room.

I appreciate that the loose parts may not have been purely an assembly issue but I have never seen a shipped piece of hardware in this condition after being shipped. I hope the threadlock will stop the issue going forward. I am hoping what you say is correct and that the issue is due to loose parts and nothing more.

I am a software architect by profession and eventually I will port some of these features to Windows, I know there are many haters but it is a very stable platform, I am running Windows Server 2012 and can spin up multiple VM's to handle mining as I grow my operation. I can post on how that goes as I get to it.

cgminer version 3.9.0h2 - Started: [2014-02-05 16:45:32]

(5s):440.3G (avg):421.4Gh/s | A:1900827 R:17408 HW:7210 WU:11114.1/m
ST: 2 SS: 0 NB: 38 LW: 2047136 GF: 0 RF: 0
Connected to stratum.mining.eligius.st diff 256 with stratum as user 1Bk9VSwaXn9UhpdowTwHEPEWw95i5F7N2_Miner1
Block: 12f30e18... Diff:2.62G Started: [22:31:53] Best share: 551K

[P]ool management Settings [D]isplay options [Q]uit
HFA 0: 77C/.80V 82C/.80V 73C/.79V 72C/.79V 425.9G/421.4Gh/s | A:1899803 R:17408 HW:7215 WU:11117.8/m


cgminer version 3.9.0h2 - Started: [2014-02-05 16:46:44]

(5s):408.1G (avg):415.5Gh/s | A:1883755 R:16256 HW:6779 WU:10806.0/m
ST: 2 SS: 0 NB: 38 LW: 2015649 GF: 0 RF: 0
Connected to stratum.mining.eligius.st diff 256 with stratum as user 1Bk9VSwaXn9UhpdowTwHEPEWw95i5F7N2_Miner3
Block: 12f30e18... Diff:2.62G Started: [22:31:54] Best share: 4.79M

[P]ool management Settings [D]isplay options [Q]uit
HFA 0: 81C/.79V 76C/.79V 73C/.79V 73C/.79V 410.5G/415.6Gh/s | A:1884011 R:16256 HW:6780 WU:10808.2/m
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