Show progress report while tuning

[bjoo]

It would be helpful (although not necessary for performance or other reasons) it QUDA could show some 'sign-of-life' while tuning (e.g. the unix. / - \ | / - \ | spinny, or just a '.' on the master node every now and again). This way, when there is a long tuning period, the users can tell that the code hasn't hung. Just an idea, but definitely not the most urgent thing.

[mathiaswagner]

Maybe something like https://github.com/p-ranav/indicators

[jxy]

Most of the time we don't really want much output, especially when called from a third party app. Depending on the usage, I would be happy if we can have a stack trace printed after receiving a SIGUSR1.