In some examples, a system partitions a shared memory address space of a shared memory among a plurality of processing entities into a plurality of memory partitions, where a respective memory partition is associated with a respective processing entity. A first processing entity forwards, to a second processing entity, a first data operation, based on a determination by the first processing entity that the first data operation is to be applied to data for a memory partition associated with the second processing entity. The second processing entity applies the first data operation that includes writing data of the first data operation to the memory partition associated with the second processing entity using a non-atomic operation.