Download An algebraic approach to compiler design by Augusto Sampaio, Amast-Fund PDF

By Augusto Sampaio, Amast-Fund

This publication investigates the layout of compilers for procedural languages, according to the algebraic legislation which those languages fulfill. the actual procedure followed is to lessen an arbitrary resource software to a normal common shape, in a position to representing an arbitrary objective laptop. this can be accomplished by means of a sequence of ordinary shape relief theorems that are proved algebraically from the extra easy legislation. the traditional shape and the comparable aid theorems can then be instantiated to layout compilers for unique goal machines. This constitutes the most novelty of the author's method of compilation, including the truth that the whole procedure is formalised inside a unmarried and uniform semantic framework of a procedural language and its algberaic legislation. moreover, via mechanising the strategy utilizing the OBJ3 time period rewriting process it truly is proven prototype compiler is constructed as a byproduct of its personal facts of correctness.

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4 Application Case Studies We now present case studies of four applications we used to guide the design of the RSPMD language extensions and evaluate their effectiveness: conjugate gradient, parallel sort, particle in cell, and stencil. 1 A. Kamil and K. Yelick Test Platforms We tested application performance on two machines, a Cray XE6 and an IBM iDataPlex, both located at the National Energy Research Scientific Computing Center (NERSC) at the Lawrence Berkeley National Laboratory (Berkeley Lab).

We compared two versions of particle in cell. The flat version divides the fluid grid and particles between each thread, which separately process their fluid cells and particles, performing any required communication directly between different threads. In the hierarchical version, the fluid and particles are divided among nodes, and the threads in a node cooperatively process the node’s fluid cells and particles. In this version, communication is aggregated between nodes. Figure 3(b) compares the performance of the two versions of particle in cell on a 2563 fluid grid with particles on the surface of a sphere.

Then each thread sequentially sorts 14 A. Kamil and K. Yelick its keys, and the sorted subsets are merged in parallel by assigning each merge operation to one thread from the subsets that are to be merged. In order to express merge sort in this way, a team hierarchy is constructed that consists of a binary tree, in which each node contains half the threads of its parent. The following code constructs such a hierarchy, using the splitTeam library method to divide a team in half. s t a t i c void divideTeam ( Team t ) { i f ( t .

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