A heterogeneous computing system comprising a switch/network adapter port interface utilizing load-reduced dual in-line memory modules (LR-DIMMs) incorporating isolation memory buffers. In a particular embodiment of the present invention the computer system comprises at least one dense logic device and a controller coupling it to a memory bus. A plurality of memory slots are coupled to the memory bus and an adaptor port is associated with some number of the plurality of memory slots, each of the adapter ports including associated memory resources. A direct execution logic element is coupled to at least one of the adapter ports. The memory resources are selectively accessible by the at least one dense logic device and the direct execution logic element.