International Business Machines Corporation

Sean G Rooney

Michael Baentsch

Peter Buhler

Paul T Hurley

Daniel Nikolaus Bauer

Thomas Gschwind

Paolo Scotton

Tomas Tuma

Frank Hoering

Andreas Guenther Herkersdorf

Marcel Waldvogel

Anthony Bussani

Michael Kuyper

Feridun Metin

A plurality of protocol stacks are deployed. Each of the protocol stacks includes a plurality of composable protocol modules, and each of the composable protocol modules implements common interfaces. It is detected that a first given one of a plurality of clients wishes to connect to a publication-subscription engine and it is determined whether the first given one of the plurality of clients is to be connected in a secure manner. Responsive to determining that the first given one of the plurality of clients is to be connected in the secure manner, an encrypted instance of a first appropriate one of the plurality of protocol stacks is instantiated to effectuate the secure connection. The first given one of the plurality of clients is authenticated and authorized.

Introducing encryption, authentication, and authorization into a publication and subscription engine

A system and method for executing software modules on a computer, the method comprising: executing (S) a bootloader (), at least partly () in the computer (); and upon execution of the bootloader: accessing (S) requirements as to an initial set (IS) of software modules (SMn); and hardware specifications of the computer; determining (S) within said initial set, one or more candidate sets (CS, CS) of software modules that are compatible (S) with said hardware specifications and can (S) be stored as a RAM disk; and storing (S) the software modules of a final set (FS) on a RAM disk (), the final set (FS) being one of the one or more candidate sets, and instructing to execute the software modules stored on the RAM disk, wherein each of the initial set and the final set of software modules comprises application components and operating system image components, and preferably further comprises hardware component drivers.

Secure execution of software modules on a computer

A system and method are provided for tracking notification messages from a message publisher to a message subscriber. The system includes a plurality of entities that are operatively coupled to one another via an electronic network, and each entity includes at least one processor configured as a message publisher, a channel and/or a message subscriber. According to the invention, at least one entity is configured as a channel, which is assigned to the function of acting as a meta-channel and comprises (i) means for receiving one or more channel descriptions; and (ii) means for publishing a digest of one or more channel descriptions and/or message transformations to facilitate tracking of message transformations from raw forms to processed forms. The system may have more than one meta-channel, and the meta-channels may subscribe to or publish to each other.

System and method for tracking notifications in a publish subscribe system

Methods and apparatus for gathering information from processors by using compressive sampling are presented. The invention can monitor multicore processor performance and schedule processor tasks to optimize processor performance. Using compressive sampling minimizes processor-memory bus usage by the performance monitoring function. An embodiment of the invention is a method of gathering information from a processor, the method comprising compressive sampling of information from at least one processor core. The compressive sampling produces compressed information. The processor comprises the at least one processor core, and the at least one processor core is operative to process data.

Method and apparatus for efficient gathering of information in a multicore system

The invention describes a method for transmitting data packets by a router, whereby the ports of the router are assigned to affinity values. The data packets also comprise affinity values. Depending on a match of the affinity values of the data packets and the affinity values of the ports, the router forwards the data packets to selected ports. Furthermore, the data of the payload of the data packets are attenuated depending on the affinity value that is used for selecting the port.

Method for forwarding data packets by a router

The invention is directed to a method of transmitting data information and control information each having a source address and a destination address, from a server, having a server address, to a client, having a client address. The method comprises the steps of transmitting the control information from the server to the client via a network proxy that has a network proxy address, and transmitting the data information from the server to the client not via the network proxy. This system has the advantage that, on one hand, the data information is transmitted directly and therefore without any additional delay due to the network proxy, so that the throughput of the data information is maintained. In particular, a video stream can be sent over the network under real-time conditions. Additionally and on the other hand, the invention provides the advantages achievable by using a network proxy. In particular, the functions offered by a network proxy may still be available in connection with a continuous media service. For example the server providing the media stream may change over time without the client noticing the change. This allows e.g. load-balancing during stream transmission without perturbation at the client side.

Method, network and network proxy for transmitting information

The present invention provides a method and system handling information exchange through networkstofor interactive information exchange, especially for interactive Internet based game show. At least one serverand a plurality of client machinestoare connected through the networkstoFirst, the serverreceives subscription messages from a subset of said client machinestoBy receiving the subscription messages from the client machinestothe provider of the particular program knows which users want to participate in the program. In response, the servercomposes a request message offering predetermined response options, whereby corresponding response messages are returned through said networkstoin one or more packets. In parallel, packet forwarding rules are set up in said networkstospecifying a particular treatment for said returned packets dependent on said predetermined response options. Finally, the server sends the request message to the subset of client machines.

Method and system for application specific packet forwarding

Methods and apparatus are provided for managing data communications between hosts () of a switched Ethernet network (). Hosts () are assigned to logical groups of hosts such that the hosts participating in a data communication are assigned to the same group. In a switch () of the network, each group is associated with a service class indicative of requirements for forwarding data across the switch () for data communications between hosts () in that group. Data received by the switch () is forwarded across the switch in a manner dependent on the service class of the group to which hosts () participating in the data communication are assigned. In the switch (), data communications between hosts () in one or more of said groups are disabled when required to satisfy the forwarding requirements for at least one said service class.

Switched ethernet networks

A method, a system and a device for data communication between a sender and a plurality of recipients are provided to be used for interactive multimedia systems such as interactive television game shows. First, the sender transmits over a data network a first message. The first message causes a response message returned by one of the plurality of recipients to be delayed for a random period of time. Then, the sender broadcasts a second message asking the plurality of recipients for a response message. After having received the second message, each recipient initiates a response message. The response message is delayed for a random delay time. Thereafter, the response message is transmitted to the sender over the data network. Finally, the sender waits for a second period of time for response messages to arrive at the return address. A major advantage of the invention is a reduction of a peak load caused by the recipients' response messages.

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Zurich, Switzerland

Sean G Rooney