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luke-jr / bfgminer

Modular ASIC/FPGA miner written in C, featuring overclocking, monitoring, fan speed control and remote interface capabilities.
http://luke.dashjr.org/programs/bitcoin/files/bfgminer/
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Gridseed Blade Degrade Cluster Degrades After An hour #613

Open ghost opened 9 years ago

ghost commented 9 years ago

I have a Gridseed blade cluster (4 gridseed blades x 2 USB each = total of 8 USB devices) plugged into a raspberry PI utilizing Minera 4.1.0 and the latest Build of bfgminer 5.1.0-36-g8b5d36b.

The command I utilize is bfgminer --scrypt -S noauto -S gridseed:/dev/ttyACM0 --set gsd:clock=825 --queue 0 --scan-time 1 --expiry 1 --retries=1

This will allow one USB to run and it runs at about 2.4 MH/s or so and after about an hour the hashrate still reports this amount but the device flags as dead. All 8 USBs do the exact same thing.

However, I have two other blade clusters and they are running solid using the exact same commands/software.

Any ideas? I would chalk it up to hardware failure but 8 USB devices all at once? Any recommended commands / debugging logs / etc to pull for research?

Thank you so much again!!! Great product!!

ghost commented 9 years ago

One difference I noticed between the working cluster and the degraded cluster is the raspberry pi version is different

Working: ARMv7 Processor rev 5 (v7l) (Raspberry PI 2) Degraded: ARMv6-compatible processor rev 7 (v6l) (Raspberry PI Model B+)

Think the processor difference would matter? The CPU/Memory/Disk usage is all low across the board.

luke-jr commented 9 years ago

Raspberry Pi (1) does have a USB bus known to be broken/defective. I don't know if that was fixed in Pi2...

ghost commented 9 years ago

Interesting. This may make sense then as the other two miners are rasp 2

I ordered a rasp 2 and once I get it I will replace this exact miner with it and i will report back.

If the degradation is resolved then that must be the issue

Thank you

Sent from my iPhone

On Apr 8, 2015, at 3:35 PM, Luke-Jr notifications@github.com<mailto:notifications@github.com> wrote:

Raspberry Pi (1) does have a USB bus known to be broken/defective. I don't know if that was fixed in Pi2...

Reply to this email directly or view it on GitHubhttps://github.com/luke-jr/bfgminer/issues/613#issuecomment-91013512.

ghost commented 9 years ago

Switching to a Raspberry 2 resolved the issue