Patent ID: 8051412
Filing Date: 2011-11-01
Classification: G06F

Abstract:
1. A global compiler for a heterogeneous multiprocessor, for causing a computer to execute the following processings to extract parallelism from an input program and generating an object program corresponding to a plurality of processor units in a system which includes a single or a plurality of types of processor units, the global compiler comprising the processings of: analyzing the input program by executing, on the computer, a respective code generation compiler prepared beforehand for each type of processor unit included only within the plurality of processor units to extract program portions to be executed for each processor unit, and generating processing allocated processor information for designating the program portion; generating execution time information estimating execution time of the extracted program portions at the plurality of processor units when an executable portion is extracted from the input program for each dedicated processor unit; analyzing the input program to extract parallelism of the input program, and allocating the program portions to the plurality of processor units based on the processing allocated processor information and the execution time information; outputting the allocated program portions as an output code of each processor unit; and calculating data transfer time between a shared memory of data necessary for each processor unit and a local memory of the processor unit in addition to the estimated execution time obtained by generating the execution time information to generate data transfer time information.