Take a look at Celeste [1], which ran on the Cori supercomputer. At that level you really need high performance not just for numerics but also for IO and heavil

Take a look at Celeste [1], which ran on the Cori supercomputer. At that level you really need high performance not just for numerics but also for IO and heavily custom data structures, which was previously only possible in Fortran and C++. [1]: https://juliacomputing.com/case-studies/intel-astro.html https://juliacomputing.com/case-studies/intel-astro.html