Abstract: Systems and methods for facilitating hibernation mode transitions for virtual machines. An example method comprises: disabling modifications of a hardware configuration parameter of a virtual machine running in a hibernation state on a host computer system; and responsive to determining the hardware configuration parameter of the virtual machine has been modified, causing the virtual machine to discard, upon awakening, a previously saved memory state.

Abstract: Systems and methods for facilitating hibernation mode transitions for virtual machines. An example method comprises: responsive to determining that an active user session exists in a virtual machine operating in a hibernation state on a host computer system, disabling modifications of a hardware configuration parameter of the virtual machine; responsive to determining that the active user session has terminated, enabling modifications of the hardware configuration parameter of the virtual machine; and responsive to determining the hardware configuration parameter of the virtual machine has been modified, causing the virtual machine to discard, upon awakening, a previously saved memory state.

Abstract: An interferometer has an angled beam entry to a multimode waveguide that can be formed of parallel plane mirrors. The beam is input at a specified primary angle &agr; so as to generate interference between populated modes. The primary angle preferably satisfies the condition &agr;>arcsin(&lgr;/d), where d is a width of the waveguide and &lgr; is a wavelength of the primary beam. The interferometer can provide a small distance between transmission fringes and is useful for precise position measurements. The fringe positions are determined by wavelength, which permits use in spectrum analysis and the like. The waveguide can include an active optical material and be controlled, for example for switching between output channels.

Abstract: The present invention relates to an interferometer comprising: