You jest, but sometimes that's exactly what you need for short-lived programs¹. Bump alloc and free on exit is super fast if your space complexity is bounded.

¹ http://www.drdobbs.com/cpp/increasing-compiler-speed-by-over...

JonL White actually wrote a serious paper about just this idea in 1980: http://dl.acm.org/citation.cfm?id=802797

Memory leaks be damned... Seriously, that is just huge.

Add some bitcoin mining with the power you still have afterwards