Quote from: martinm on September 15, 2013, 07:43:51 AM

Quote from: kano on September 14, 2013, 03:02:20 PM

Quote from: martinm on September 14, 2013, 10:29:35 AM

Hello ck,
Hello Kano,

I've a question related to the identification of a device in cgminer and the a hardware device. As I'm currently about to develop a application that creates statistics for every device, it's essential to have a clear mapping between hardware device and the related device in cgminer for that. Previously I thought that the combination of the Device Type (GPU/BAS/AVA/....) and ID provided from cgminer could achieve that task, I had the hope it works as long the devices are connected to the same Port(USB/PCE...). Unfortunately I discovered that's not right. During the run of CGMiner I unplugged an Avalon from the USBPort and reconnected after a short time. After the reconnect the Id changed from AVA0 to AVA1. Now I'm questioning myself, how I can achieve the unique identification of a hardware device by reported data from CGMiner. I hope you can give me some advice!

Thany you very much in advance

Avalon has no information in the device at all - I think that's something those guys like doing Tongue

Icarus has nothing useful either.

Any device that has an iSerial that isn't constant would be one way to detect 2 devices being the same one that hotplugged later.

But with Avalon it's not possible - so if you unplug 2 and then plug them back in, there's no USB information to say which was which before.
The devices that don't have an iSerial, or have the same iSerial, are: AVA, AMU, BFL FPGA, MMQ
AsicMiner USBs can be reprogrammed to fix it
I've no idea what the ATI library supplies for GPUs but I'd guess nothing useful either.

These devices don't have this stupid problem: BFL SC, BLT, BTB

Thank you for the clear answer!

Oh lol - I just realised I made a rather silly comment there Cheesy

You can't unplug a GPU while it's mining so GPUs would not be relevant to your comment.