Hewlett-packard Development Company, L.p.

Jacob B Leverich

Norman Paul Jouppi

Jung Ho Ahn

Parthasarathy Ranganathan

Robert S Schreiber

Vanish Talwar

Matteo Monchiero

An integrated circuit package includes a digital logic die disposed on a substrate; and an interposer die stacked vertically with the digital logic die on the substrate. The interposer die includes at least one vertical transistor configured to selectively provide electrical power to a portion of the digital logic die.

Integrated circuit package

Various embodiments of the present invention are directed to methods that enable a memory controller to choose a particular operation mode for virtual memory devices of a memory module based on dynamic program behavior. In one embodiment, a method for determining an operation mode for each virtual memory device of a memory module includes selecting a metric () that provides a standard by which performance and/or energy efficiency of the memory module is optimized during execution of one or more applications on a multicore processor. For each virtual memory device (), the method also includes collecting usage information () associated with the virtual memory device over a period of time, determining an operation mode () for the virtual memory device based on the metric and usage information, and entering the virtual memory device into the operation mode ().

Dynamic utilization of power-down modes in multi-core memory modules

Various embodiments of the present invention are directed a multi-core memory modules. In one embodiment, a memory module () includes at least one virtual memory device and a demultiplexer register () disposed between the at least one virtual memory device and a memory controller. The demultiplexer register receives a command identifying one of the at least one virtual memory devices from the memory controller and sends the command to the identified virtual memory device. In addition, the at least one virtual memory devices include at least one memory chip.

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San Mateo, CA, United States of America

Jacob B Leverich