, , & _/ |\__'_|_|_|\__'_| |__/ Sacha Verweij and Jane - PowerPoint PPT Presentation

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the two language problem performant productive (lisp, python, ruby, matlab) (asm, fortran, c, c++) either write code efficiently … or write efficient code

typical workaround? use two languages (prototype + production) ergo the two language problem

“l ooks like python, feels like lisp, runs like c “

…l ooks like python… # python # julia def sum(a): function sum(a) s = 0.0 s = 0.0 for x in a: for x in a s += x s += x return s end return s end

… feels like lisp… homoiconic dynamic parametric multiple dispatch highly polymorphic …

… runs like c … # python # julia def sum(a): function sum(a) s = 0.0 s = 0.0 for x in a: for x in a s += x s += x return s end return s end

“l ooks like python, feels like lisp, runs like c “

github stars 1.0 release

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an two language problem for teaching? accessible & productive powerful &/| performant (c/c++, lisps, fortran, rust, …) (python, ruby, lua, matlab, …) intro CS advanced CS (loops, variables, (types, architectures, functions, control flow, …) compilers, performance, …) _ _ _ _(_)_ we can smooth the way with (_) | (_) (_) _ _ _| |_ __ _ | | | | | | |/ _` | | | |_| | | | (_| | _/ |\__'_|_|_|\__'_| |__/

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a stack for teaching high performance gemm matlab c pseudocode down to the metal prototyping transparent performance model exploration testing benching WE HAD TO USE MEX FILES plotting

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*.MEX