Comment by m_mueller

> out of the hands of the programmer

see, and that's where these languages become really clunky for HPC purposes. A compiler/runtime with HPC support (and I think also systems programming) should provide (a) performant defaults with safety as a second (but still high) priority and (b) the ability for programmers to go and set things a certain way when it is clear to them how things should be implemented on the machine.

Otherwise, in large applications, there's just too many moving parts that the compiler (optimization) can mess up. As long as we have no AGI baked into compilers it's an illusion to think that compilers will do the job of HPC engineers, so if you take away these tools we just have to look elsewhere.