swMATH ID: 20274
Software Authors: Fabio Luporini, Ana Lucia Varbanescu, Florian Rathgeber, Gheorghe-Teodor Bercea, J. Ramanujam, David A. Ham, Paul H.J. Kelly
Description: COFFEE is a COmpiler For Fast Expression Evaluation. Given mathematical expressions embedded in a loop nest, COFFEE can be driven in the application of two classes of transformations: Expression rewriting, for flops minimisation. A small set of rewrite operators, such as expansion, factorization, and generalized code motion, can be composed with the aim of reducing the operation count. Code specialisation, to maximise the impact of low level optimisation. For example, COFFEE can analyse the arrays, loops, and memory access pattern in a kernel, and then autonomously decide on the application of padding and data alignment, a transformation for enhancing the effectiveness of compiler auto-vectorisation. COFFEE is currently used in Firedrake, an automated system for the solution of partial differential equations using the finite element method. An optimisation pipeline in COFFEE was designed to exploit a fundamental mathematical property of finite element integration kernels, namely linearity of operators in test and trial functions.
Homepage: https://github.com/coneoproject/COFFEE
Source Code:  https://github.com/coneoproject/COFFEE
Related Software: Firedrake; PETSc; TSFC; UFL; petsc4py; FEniCS; PyOP2; FIAT; FIAT; mpi4py; FFC; FInAT; deal.ii; chammp; hypre; FreeFem++; DMPlex; Python; SyFi; Gmsh
Cited in: 20 Publications

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