Quote from: ernie- on July 10, 2014, 08:01:40 AM

I am trying to run 4 x Zeus blizzards on the one Raspberry Pi, and it doesn't seem to be coping. I am using bfgminer 4.4.0 and even at a lower clock of 308 I am getting like 20% HW errors and all sort of problems, like sometimes not all of the blizzard will start and I have to quit bfgminer and launch it again, I often get ZUS 0: Comms error (werr=1) and other bad looking messages. The CPU load is about 1.5.

Anyone know the practical maximum of Blizzards you can run of a single Pi?

I ran into this same issue last night and was on the starminer image. Running 2 or 3 at once was ok, add in the 4th and each one would generate hundreds of hw errors within minutes. I flashed the no-frills Zeus rpi image and it works ok. That image actually launches a separate cgminer instance per device. It's a pain in the ass to configure since you can't replicate the settings to all devices and it boots up and mines for Zeus by default (a TOTAL scam....no reputable company would do that - they would leave the configurations blank and prompt the user with a notification they need to complete the setup before mining will start). But it works. I also cloned/compiled dmaxl's cgminer to the Zeus image and ran it...and it also works fine running all 4 miners in one instance. I'll try starminer again with a freshly flashed image today maybe.

and speaking of cgminer....anyone know what the 'proper' way to specify per-device settings in a config file is? I can't seem to get it to work.