Hi all. I've been running rock-solid mining LTC on two 7950s for months, but I'm trying to switch to middlecoin to give the autoswitching a try. Unfortunately I keep getting the windows "cgminer has stopped responding" crash when I try middlecoin. It'll run fine for maybe a few hundred accepted, and then I'll get the crash. I know my rig is solid since I've never had any problems mining on LTC pools.

I'd really appreciate any help getting this to work. Here are my current bat settings


setx GPU_MAX_ALLOC_PERCENT=100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://middlecoin.com:3333 -u 18D9Fwhprh6xXMCsySi4ViPtmT5QxHB8pz -p x --intensity 20 --thread-concurrency 21712 --auto-fan --temp-target 72


The only thing changed here from my stable LTC mining is the middlecoin URL and BTC address as username.

I'm trying it at a lower intensity this evening to see if that helps, but there shouldn't be a problem with 20, since that's what I've been running LTC at for months.

Appreciate any help you guys can provide. I'd love to get this up and running.

Thanks in advance.

This kind of thing is common in arbitrage strategies. It would be a very useful feature for the major exchanges to add. They all will inevitably but the question is whether there are exchanges with sufficiently high liquidity that offer it already.

Bump. Anyone?

Thanks for sharing.

Hi there,

Noob question here:

Every time I launch cgminer I get "Error -1: Getting Device IDs <num>"

But then it mines just fine. However, I'm about to add a second 7950, and in order to tune the cards differently, I assume I need a way to reliably tell which card is which?

Is there a way for me to correct this error, so that cgminer always knows specifically which device is which?

e.g. If I want to set GPU clock differently for each card, this could cause problems if cgminer makes one gpu device 0 one time, and the same gpu device 1 another time, right?

I'm on Windows 7 with Gigabyte 7950's

Thanks!