I wanted to see how my new 13" Retina MacBook Pro performed on GPU stress, so I downloaded some GPU benchmark apps. In one of the apps, I set the resolution to the same as my screen, and I putted antialiasing to the max...
Then, when I launched it, my computer became (not surprisingly) unresponsive, I did managed to force quit the app though, at which time OS X triggered me an error panel, telling me that there was a graphic error (and I could signal it), but it didn't blocked anything. A little bit later, after I ran another benchmark, a small black line appeared briefly on the screen (something like 0.5 seconds) and then disappeared.
Is it a normal behavior after a high GPU load ? Or should I worry about it ? Is it dangerous for the CPU to go to its limits ? (my GPU is an Intel Iris one).