Abstract: A distributed computer system having centrally available processing units. A plurality of computer workstations are connected to a plurality of processing units by computer transmission cables. In one embodiment each of the workstations may be connected to any of the plurality of processing units. These connections are accomplished by a switching unit controlled by a management computer where the management computer automatically connects and disconnects individual computer workstations to individual processing units. In a typical embodiment, there are more computer workstations then processing units and the management computer disconnects idle computer workstations from processing units and connects previously idle computer workstations that become active to processing units not then connected to another computer workstation. A portion of a video display adapter is included in computer workstations while a second portion of a video display adapter is included in the processing units.

Abstract: A method and apparatus of improving the quality of graphic and/or audio information, such as a video clip, transmitted over a network is provided. In one particular embodiment, a network client requests multiple downloads of a video clip stored on the network server. In response to each request, the network server compresses the video clip and transmits the compressed data in a scalable bitstream. The video clip includes an audio channel which occupies a first portion of the available bandwidth, and a video channel which occupies a second portion of the available bandwidth. Upon receipt of each download, the network client stores the audio and video data in cache. The network client combines the data from each download in the cache prior to displaying the video clip in a web browser program.

Abstract: A computer system having a shared disk file system running on multiple computers each having their own instance of an operating system and being coupled for parallel data sharing access to files residing on network attached shared disks. A metadata node manages file metadata for parallel read and write actions. Metadata tokens are used for controlled access to the metadata and initial selection and changing of the metadata node.

Abstract: An apparatus and method for scheduling data transfers between a host and adapter. A schedule table data structure resides in a memory on the adapter. Each location in the schedule table represents a point in time at which data is to be transmitted from the adapter. A current time counter advances at the rate at which data is to be transmitted from the node. A pointer points to successive locations in the schedule table, and advances through the schedule table at a rate faster than the current time counter advances so that the value stored in the pointer represents a point in time which is ahead of the point in time currently represented by the value output from the current time counter. A request for a data transfer between the host and adapter is generated when a valid entry exists at the location pointed to by the pointer. The value of the pointer at the time the request is generated is stored as the last valid time.