System and method for grid MPI job allocation using file-based MPI initialization in grid computing system

A file-based Message Passing Interface (MPI) job allocation apparatus for a middleware-based grid computing apparatus in which computers having a plurality of computing resources including an MPI program are distributed and connected to each other through a network, includes: a plurality of computational nodes each having a job execution service module for executing a job for the plurality of computing resources including the MPI program included in the distributed computers; and a middleware having a job submission service module for distributing a job to the plurality of computational nodes, receiving information necessary for MPI initialization, generating a file including the information, and transmitting the file to the MPI program.