Abstract: Data array manipulation is described. In an embodiment, concurrent access to a multi-dimensional data array stored on a storage device is enabled by providing separate computational elements with access to a model of the data array for processing the data and consequently request changes to the model. The data array is updated in accordance with the changes, and notification of the changes is provided to the other computational elements concurrently accessing the model. In another embodiment, a data interface apparatus is provided that comprises a storage interface that generates a model of the data array, and an application interface that provides access to the model to the computational element for processing. The application interface receives changes to the model resulting from the processing, and a command to commit the changes to the data array. The storage interface then writes the changes to the data array as an atomic operation.