International Business Machines Corporation

Other

Reiner Rieke

Joerg-Stephan Vogt

Gunnar Von Boehn

Thomas Fuchs

Christian Jacobi

Kanak Behari Agarwal

Anthony Thomas Sofia

Peter Bergersen Yocom

Damir Anthony Jamsek

Dieter E Staiger

Andrew Kenneth Martin

Frank Haverkamp

Hartmut Droege

Michael Ruettger

Norbert Hagspiel

Wolfgang Eibach

Matthias Gruetzner

Martin Neumann

Volkmar Goetze

Joachim Eisenmann

Matthias Koehn

Hans-Juergen Aminger

Philipp Lanches

Markus Mrossko

Stefan Gleissner

A hardware accelerator receives a request to decompress a data stream that includes multiple deflate blocks and multiple deflate elements compressed according to block-specific compression configuration information. The hardware accelerator identifies a commit point that is based upon an interruption of a first decompression session of the data stream and corresponds to one of the deflate blocks. As such, the hardware accelerator configures a decompression engine based upon the corresponding deflate block's configuration information and, in turn, recommences decompression of the data stream at an input bit location corresponding to the commit point.

Efficient context save/restore during hardware decompression of DEFLATE encoded data

A preprocessing unit includes a data receiver to receive a data packet containing packet information, application data, and application data information, a relevance checker to determine relevance of the data packet in dependence on the packet information, an output module to output preprocessor output data, and a first controller to control output of preprocessor output data in dependence on the relevance of the data packet. In order to discard redundant data, thereby reducing the load of the memory, bus, and CPU of the computer system, the preprocessing unit further comprises a redundancy checker to determine redundancy of the application data preferably and a second controller to control output of preprocessor output data in dependence on the redundancy of the application data.

Preprocessing unit for network data

Concurrently writing an uncompressed data element, if the uncompressed data element comprises an indication that it is valid, in a main hash table using a first address generated by a first hash function, and reading a first data element from the main hash table using the first address. Introducing a first pipeline delay for maintaining the uncompressed data element in a first data path until the first data element is read. Concurrently writing the first data element to a victim hash table, if the first data element comprises an indication that it is valid, using a second address generated by a second hash function, and reading a second data element from the victim hash table using a third address generated by the second hash function. Introducing a second pipeline delay for maintaining the uncompressed data element in the first data path until the second data element is read.

Hardware compression to find backward references with multi-level hashes

Embodiments relate to providing a data stream interface for offloading the inflation/deflation processing of data to a stateless compression accelerator. An aspect includes transmitting a request to inflate or deflate a data stream to a compression accelerator. The request may include references to an input buffer for storing input data from the data stream, an output buffer for storing processed input data, and a state data control block for storing a stream state. The stream state is provided to the compression accelerator to continue processing the data stream responsive to the request being a subsequent request. The compression accelerator is instructed to store a current stream state in the state data control block responsive to the request being a non-final request. Accordingly, the current stream state is received from the compression accelerator responsive to the request being a non-final request. The processed input data is received from the compression accelerator.

Compression/decompression accelerator protocol for software/hardware integration

A Common System Storage Repository replaces all the different system support storages distributed across a server system topology transparent to various subsystems by providing a central non-volatile repository for all the different system data. Each of the various subsystems communicate with the Common System Storage Repository via the individual system support storage interfaces.

System support storage and computer system

A processor unit for a data-processing-aided electronic control system in a motor vehicle, in which the processor unit operates in real-time and contains within its functional structure a scalable computing unit and a vehicle interface unit, as well as (preferably) a communication coprocessor as separate structural components.

Processor unit for a data-processing-aided electronic control system in a motor vehicle

Growing community of inventors

Althengstett, Germany

Reiner Rieke