Systems and methods for global memory for a RapidIO network are provided. In one embodiment, a method for accessing global data on a RapidIO network comprises obtaining ownership of a global memory unit (GMU) and receiving a data write packet at a GMU endpoint on a RapidIO network. The data write packet includes a source network identifier and a dataset. The method further comprises verifying whether the source network identifier matches a lock owner network identifier stored in a first register, and verifying one or both of whether one or both of a processor endpoint and a controller endpoint are permitted to alter the lock owner network identifier, and whether the source network identifier identifies a processor endpoint authorized to write data on the GMU based on a set of authorized source network identifiers stored in a second register. The method further comprises storing the dataset on the GMU.