Disclosed is a computer system which includes a host and a memory module. The host transfers a plurality of cache lines to a memory module through a plurality of channels, the cache lines including a plurality of data elements and allocates cache lines with target data elements in the plurality of data elements to one channel of the plurality of channels. The target data elements are arranged within the ache lines according to a stride interval. The stride interval is a number of data elements between consecutive ones of the target data elements. The memory module includes gather-scatter engines that are respectively connected to the plurality of channels and scatter or gather the target data elements under control of the host.