A number of high-intensity, multi-GeV superconducting RF (SRF) proton or H linacs are being developed or proposed throughout the world. The intensity frontier, having been identified as one leg of the future of particle physics, can be addressed by the development of such a linac. All these accelerators will place strict demands on the required beam diagnostics, especially in the development of none or minimum invasive monitors such as beam profile and halo monitors. An H / proton beam test facility is currently under construction and commissioning at Fermilab. It serves as a test bed for the development of critical beam manipulation and diagnostics components for the anticipated Project X, Fermilab’s SRF multi-MW, multiGeV linac. The paper will discuss the beam diagnostic needs for these high-intensity linacs in particular the role of the Project X test facility for development and testing of these beam instrumentation systems.