A method, circuit arrangement, and design structure for prefetching data for responding to a memory request, in a shared memory computing system of the type that includes a plurality of nodes, is provided. Prefetching data comprises, receiving, in response to a first memory request by a first node, presence data for a memory region associated with the first memory request from a second node that sources data requested by the first memory request, and selectively prefetching at least one cache line from the memory region based on the received presence data. Responding to a memory request comprises tracking presence data associated with memory regions associated with cached cache lines in the first node, and, in response to a memory request by a second node, forwarding the tracked presence data for a memory region associated with the memory request to the second node.