Dependence uniformization: a loop parallelization technique

Data dependence uniformization, a method for overcoming the difficulties in parallelizing a doubly nested loop with irregular dependence constraints is proposed. This approach is based on the concept of vector decomposition. A simple set of basic dependences is developed from which all dependence constraints can be composed. The set of basic dependences is added to every iteration to replace all original dependences so that the dependence constraints become uniform. An efficient synchronization method is presented to obey the uniform dependence constraints in every iteration