Launching a simulator fails with an error: No template

Question

I am running the following command to launch iOS simulator via Xcode

 xcrun instruments -w 2E755803-3DFD-4722-B6B7-25498BCFF551

and it fails with

Instruments Usage Error : No template (-t) specified
instruments, version 7.2 (59503)
usage: instruments [-t template] [-D document] [-l timeLimit] [-i #] [-w device] [[-p pid] | [application [-e variable value] [argument ...]]]

so what is that template that is required here?

Answer 1

I got around it by launching a different device first then the one i wanted.