A method for processing using a shared file that includes allocating a first working buffer between the shared file and a plurality of address spaces, wherein each of the plurality of address spaces is associated with one of a plurality of processors, copying first data from the shared file to the first working buffer by a first aggregator copying the first data from the first working buffer to the plurality of address spaces by the first aggregator, processing the first data, in parallel, by the plurality of processors to obtain a result, wherein the plurality of processors access data from the plurality of address spaces, and storing the result in the shared memory.