C++ has been used on machines with very high CPU core counts for a long time. By now, things like std::async for spawning tasks on a different core are even par

C++ has been used on machines with very high CPU core counts for a long time. By now, things like std::async for spawning tasks on a different core are even part of the standard library. Go is also really good at saturating many cores with its low-overhead goroutines.