A method of processing an input task in a processing system involves duplicating the input task so as to form a first task and a second task; allocating memory including a first block of memory configured to store read-write data to be accessed during the processing of the first task; a second block of memory configured to store a copy of the read-write data to be accessed during the processing of the second task; and a third block of memory configured to store read-only data to be accessed during the processing of both the first task and the second task; and processing the first task and the second task at processing logic of the processing system so as to, respectively, generate first and second outputs.