Abstract: A computer implemented method, data processing system, and computer program product for reworking a plurality of cells initially placed in a circuit design. An expander allocates cells to tiles, wherein some tiles have cells. The expander determines a high detailed routing cost tile class, wherein the high detailed routing cost tile class is a class of tiles that are high detailed routing cost tiles. The expander selects a cell within a tile of the high detailed routing cost tile class to form a selected cell and a selected tile. The expander places an expanded bounding box around the selected cell, wherein the bounding box extends to at least one tile adjacent the selected tile. The expander expands the selected cell within the bounding box to form a modified design, determines an aggregate routing cost among other steps, and affirms the modified design for further processing.

Abstract: A computing system is provided. In the computing system, a plurality of modules physically arranged in a three dimensional hexadron configuration. In the computing system, the at least one module is either a liquid-tight module filled with a non-conductive liquid coolant or a module cooled with a liquid coolant circulating through cold plates mounted on electronic components. In the computing system, the liquid coolant is circulated in a closed loop by at least one pump through a plurality of hoses through at least one of a plurality of heat exchangers. In the computing system, the plurality of heat exchangers is coupled to an exterior portion of the surface of the computing system. In the computing system, the plurality of heat exchangers cool the liquid coolant through finned tubes exposed to the surrounding air.

Abstract: Techniques are able to lock and unlock and integrated circuit (IC) based device by encrypting/decrypting a bus on the device. The bus may be a system bus for the IC, a bus within the IC, or an external input/output bus. A shared secret protocol is used between an IC designer and a fabrication facility building the IC. The IC at the fabrication facility scrambles the bus on the IC using an encryption key generated from unique identification data received from the IC designer. With the IC bus locked by the encryption key, only the IC designer may be able to determine and communicate the appropriate activation key required to unlock (e.g., unscramble) the bus and thus make the integrated circuit usable.

Abstract: Techniques are provided for reducing the likelihood of piracy of integrated circuit design using combinational circuit locking system and activation protocol based on public-key cryptography. Every integrated circuit is to be activated with an external key, which can only be generated by an authenticator, such as the circuit designer. During circuit design, register transfer level (RTL) descriptions of the IC design are embedded with combinational logic based on a master key applied by the authenticator. That combinational logic renders at least one module of the RTL description locked, i.e., encrypted. The completed circuit design from the authenticator is sent to a fabrication lab with the combinationally locked modules. After fabrication, the circuit can only be activated when the authenticator sends an appropriate key that is used by the circuit to unlock the locked portions and thereby activate the circuit.

Abstract: Disclosed is a computer implemented method, data processing system, and computer program product to optimize, incrementally, a circuit design. An Electronic Design Automation (EDA) system receives a plurality of nets wherein each net is comprised of at least one pin. Each pin is linked to a net to form a path of at least a first pin and a second pin, wherein the first pin is a member of a first net. The second pin can be a member of a second net, and the path is associated with a slack. The EDA system determines whether the path is a critical path based on the slack. The EDA system reduces at least one wire length of the path, responsive to a determination that the path is a critical path. The EDA system moves a non-critical component in order to reduce at least one wire length of the nets that include pins of a non-critical component, responsive to reducing at least one wire length of the path, wherein the non-critical component lacks pins on a critical path.