An apparatus for executing a software program, comprising at least one hardware processor configured for: identifying in a plurality of computer instructions at least one remote memory access instruction and a following instruction following the at least one remote memory access instruction; executing after the at least one remote memory access instruction a sequence of other instructions, where the sequence of other instructions comprises a return instruction to execute the following instruction; and executing the following instruction; wherein executing the sequence of other instructions comprises executing an updated plurality of computer instructions produced by at least one of: inserting into the plurality of computer instructions the sequence of other instructions or at least one flow-control instruction to execute the sequence of other instructions; and replacing the at least one remote memory access instruction with at least one non-blocking memory access instruction.