symjit

[Shahriar Iravanian]

Dear All,

I just released version 2.8.0 of Symjit (https://github.com/siravan/symjit/). Symjit is a just-in-time (JIT) compiler for SymPy. A quick review of major new features introduced in the last few releases:

v2.3: Adding multi-threading for vectorized code.
v2.4: Implementing common sub-expression elimination (CSE).
v2.5: Introducing a new intermediate-representation, allowing better optimization (level-1).
v2.6: Using a graph-coloring algorithm for register allocation, improving optimization (level-2).
v2.7: Supporting RISC-V architecture.
v2.8: Adding explicit looping constructs (Sum and Product). Allowing calls to Python and other Symjit functions.

As always, suggestions and comments are highly appreciated!

-- Shahriar

[Jason Moore]

Nice work Shahriar!

I added symjit as a backend to PyDy recently and the code generation computation time is significantly faster than anything we have in SymPy. And the code it generates is very close to Fortran and C speeds. Shahriar's approach to generate machine code directly is very novel.

We should add it as an optional backend to lambdify.

Jason

moorepants.info
+01 530-601-9791

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[Shahriar Iravanian]

Hi Jason,

Thanks a lot. I’m glad symjit has been useful. 

I’ve added many features in the last year. However, the plan forward is toward a maintenance phase with focus on correctness. There is already a large set of tests that each version has to pass before it is released. I hope to expand this corpus based on actual real world use cases.

Moreover, being a compiler, symjit is dependent on the underlying architecture and operation system. I wonder if there a survey of the sympy community showing what the most common hardware and os are.

Thanks, 

Shahriar

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