1. A method of resolving conflicts between execution of commands from a plurality of nodes to a shared memory resource by use of a memory input queue, said commands each being directed to a specific address in said shared memory resource, said memory input queue having a plurality of storage locations that are available for storage of said commands, each of said plurality of storage locations having a "free" state, a "new" state, a "wait" state and a "match" state, at least one of said plurality of nodes having a write-back cache and at least one of said plurality of nodes not having a write-back cache, said commands comprising "ownership read" type and "disown write" type commands from said at least one of said plurality of nodes with a write-back cache, and "read" type and "write" type commands from said at least one of said plurality of nodes without a write-back cache, said memory input queue being connected between said plurality of nodes to receive said commands therefrom and said shared memory resource to access said shared memory resource, said method comprising the steps of: receiving any of said commands in said memory input queue as received commands; setting each of said plurality of storage locations in said memory input queue that is available for storage of said commands into said "free" state; storing each of said received commands in one of said storage locations as stored commands in said memory input queue and changing the state of said one of said storage locations from said "free" state to said "new" state to indicate that said stored commands are to be processed; creating mask data corresponding to each of said stored commands of said "disown write" type and said "write" type; selecting each of said stored commands from said storage locations in said memory input queue; changing, from said "new" state to said "wait" state, the state of each of said storage location that stores one of said stored commands if said one of said stored commands is directed to the same specific address in said shared memory resource as another one of said stored commands of the "ownership read" type or "disown write" type; deferring the execution of each of said stored commands of the "read" type in said "wait" state until at least one of said stored commands of the "ownership read" type or "disown write" type is executed; merging and storing said mask data that corresponds to each of said stored commands of the "write" type to create merged mask data; for each of said stored commands of the "disown write" type changing, from said "wait" state to said "match" state, the state of each of said storage locations in said memory input queue that stores one of said stored commands that is directed to the same address in said shared memory resource as any of said stored commands of the "disown write" type and using said mask data of said stored commands of the "write" type from said storage locations in said "match" state to inhibit said mask data of each of said stored commands of the "disown write" type during execution and executing each of said stored commands of the "read" type from said storage locations in said "match" state after execution of said stored commands of the "disown write" type; after execution of any of said stored commands that are not directed to the same address in said shared memory resource as any other of said stored commands of the "ownership read" or "disown write" type, changing the storage location that stores said any one of said stored commands from said "new" state to said "free" state to indicate that said storage location that stores said any one of said stored commands is available to receive a new one of said commands; and after execution of one of said stored commands from one of said storage locations in said "match" state, changing said one of said storage locations in said "match" state from said "match" state to said "free" state to indicate that said storage location that was changed from said "new" state to said "free" sate is available to store a new one of said commands.