https://bugs.freedesktop.org/show_bug.cgi?id=72785
--- Comment #33 from Luke-Jr luke-jr+freedesktopbugs@utopios.org --- Looks like clEnqueueNDRangeKernel is re-compiling (or at least optimising?) the kernel, and taking a looooooooong time to do so. Isn't compiling supposed to be done *once* by clBuildProgram?