Methods, systems, and articles of manufacture consistent with the present invention provide a memory instruction manager for managing the execution of instructions associated with a program. The memory instruction manager assigns a first group identifier to a first instruction associated with a program and to a second instruction associated with the program, and provides, after the first instruction, a memory barrier instruction having the first group identifier such that one or more processors with access to the program are inhibited from executing the second memory instruction until the first memory instruction is executed.