Abstract: The integrity of the data center cooling system is maintained by using separate and independent cooling loops to collect heat from electronic components housed in modular units. According to one embodiment of the present invention, a first cooling loop is associated with each modular unit. The first cooling loop comprises a coolant that accepts heat from electronic components housed within the modular unit and transports the heat to a heat exchanging system. The heat exchanging system conducts heat from the coolant of the first loop to coolant associated with the data center cooling system. Coolant from the data center cooling system accepts heat from the coolant associated with the first loop and conveys it away from the data center.

Abstract: The present invention is for multi-screen session mobility between terminal groups. The invention uses a set of screen groups and a set of terminal groups to perform a mapping of the screen groups onto the terminal groups. Both the screen groups and the terminal groups have a geometry, which in one embodiment is defined by columns and rows. In cases where the number of columns in the screen group is less then or equal to the number of columns in the terminal group and where the number of rows in the screen group is also less then or equal to the number of rows in the terminal group, a first mapping scheme is employed. In cases where the number of columns in the screen group exceeds the number of columns in the terminal group or the number of rows in the screen group exceeds the number of rows in the terminal group, a second mapping scheme is employed. In one embodiment, the first mapping scheme maps the screen group directly onto the terminal group.

Abstract: Apparatus, methods, systems, and computer program products are disclosed that locate a modified pointer value in a carded heap memory. A plurality of nodes is allocated from the carded heap memory. The carded heap contains at least one structure that indicates the existence or non-existence of a node reference for each card. For those cards containing a node reference the structure also includes the offset from the start of the card to the node reference. A card index or pointer within a card (that is used to generate a card index) is given to the invention. The card index is used to specify a first card. A second card is found given the card index. The invention then follows, starting at the first node in the second card and using the node advance value for each followed node, the nodes in the carded memory area until it locates the node containing the pointer in the first card.

Abstract: A method for clip checking three dimensional images for display on a computer display system. The display system includes a computer having a central processing unit(CPU) coupled to a memory and a cathode ray tube (CRT) display. The method of the present invention includes inputting a plurality of points comprising an image to be displayed, wherein each of the points is described by X,Y,Z and W world coordinates. The points are stored in the memory coupled to the CPU. The CPU executes a viewing algorithm which transforms the world coordinates for each point into view reference coordinates. The view reference coordinates have an origin at the viewpoint of the user, with the Z axis pointed outward in the direction of the display screen. Each of the points of the image are described by clipping bits X Right, X Left, Y Top, Y Bottom, Z Back, and Z Front. The view reference coordinate system permits the user to selectively enable/disable clipping quadrants in X,Y,Z and W space.