Julia is a "high-level, high-performance dynamic programming language for numerical computing. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an extensive mathematical function library."
I'm not personally into Julia at the moment, but I like the project a lot and carefully follow its development.
Please find more details and performance conparisons here (note that as far as pure performance is concerned, Julia should be compared to Numpy + Numba, not plain-vanilla Python):
Last updated June 15, 2018