Comment by leephillips

If you are doing very high-performance numerical work, your choices¹ are Fortran, C, C++, or Julia. Julia is way more fun to program in than the other choices. Also, it has some properties² that make code re-use and re-combination especially easy.

1 https://www.hpcwire.com/off-the-wire/julia-joins-petaflop-cl...

2 https://arstechnica.com/science/2020/10/the-unreasonable-eff...