Unisys Corporation

Other

Qlogic Corporation

Silverstorm Technologies, Inc.

Duane J McCrory

Todd M Rimmer

Todd Matters

Robert A Johnson

Charles Austin Parker

Anthony P Gold

Jerry S Bassett

Andrew F Sanderson

Frederick W Reed

John C Waller

Vladimir K Tamarkin

Thomas R Prohofsky

Mark Steven Brandt

James J Leigh

Robert K Moulton

William P Jordan

Craig R Church

Philip Murphy

Joseph David Coyne

Eugene David Pendergraft

Frank R Dropps

Edward C McGlaughlin

Laurence P Flora

Jane Campbell Mazzagatti

Andrew T Jennings

Joseph S Schibinger

Timothy Neilson Fender

David Leon Houseman

By Priscilla Wallace, Executive

Dana M Zabilansky

Jeffrey E Dremann

Eric K Hundertmark

Method and system for routing a network packet received at a port within a network is provided. The method includes (a) generating an index value based on a destination identifier for the network packet; (b) generating one or more physical port numbers based on the index value generated in step (a); wherein each port number identifies a port for sending and receiving network packets; and (c) selecting one of the physical port numbers to route the network packet; wherein the port number is selected based on reaction selector signal that is generated from a partition key table based on a partition key value embedded in the network packet.

Method and system for partition based network routing

A computer system that includes a plurality of servers, and a shared I/O subsystem coupled to each of the servers and to one or more I/O interfaces. The shared I/O subsystem services I/O requests made by two or more of the servers. Each I/O interface may couple to a network, appliance, or other device. The I/O requests serviced by the shared I/O subsystem may alternatively include software initiated or hardware initiated I/O requests. Different servers coupled to the shared I/O subsystem may use different operating systems, and each I/O interface may be used by two or more servers.

System and method for a shared I/O subsystem

Method and system for sending and receiving a network packet via an inter-switch link (ISL) is provided. The method includes receiving a network packet at a network port; obtaining a destination identifier from a packet header for the network packet; generating a physical port number for routing the network packet; generating a signal indicating that an inter-switch link for the physical port number is shared by a plurality of partitions; generating a first set of virtual lanes based on a service level to virtual lane mapping scheme; generating a second set of virtual lanes based on an inter-switch link (ISL) service level to virtual lane mapping scheme; and selecting a virtual lane from the first set of virtual lanes or the second set of virtual lanes; based on a signal generated from a partition key table.

Method and system for routing network packets

A shared I/O subsystem for a plurality of computer systems where a plurality of virtual I/O interfaces are communicatively coupled to the computer systems. Each of the computer systems includes a virtual adapter that communicates with one of the virtual I/O interfaces. The shared I/O subsystem also includes a plurality of I/O interfaces and a forwarding function. The forwarding function includes a plurality of forwarding table entries that logically arrange the shared I/O subsystem into one or more logical switches. Each of the logical switches communicatively couples one or more of the virtual I/O interfaces to one of the I/O interfaces. A logical switch receives a first I/O packet from one of the virtual I/O interfaces and directs the first I/O packet to at least one of the I/O interface and one or more of other ones of the virtual I/O interfaces. A logical switch also receives a second I/O packet from the I/O interface and directs the second I/O packet to one or more of the virtual I/O interfaces.

System and method for implementing logical switches in a network system

A shared I/O subsystem that couples a plurality of computer systems to at least one shared I/O interface. The shared I/O subsystem includes a plurality of virtual I/O interfaces that are communicatively coupled to the computer systems. Each of the computer systems includes a virtual adapter that communicates with one of the virtual I/O interfaces. The shared I/O subsystem further includes a forwarding function having a forwarding table. The forwarding table includes a plurality of entries corresponding to each of the virtual I/O interfaces. The forwarding function receives a first I/O packet from one of the virtual I/O interfaces and uses the forwarding table to direct the first I/O packet to at least one of a physical adapter associated with the at least one shared I/O interface and one or more of other ones of the virtual I/O interfaces. The forwarding function also receives a second I/O packet from the physical adapter and uses the forwarding table to direct the second I/O packet to one or more of the virtual I/O interfaces.

System and method for implementing virtual adapters and virtual interfaces in a network system

A shared I/O subsystem for a plurality of computer systems. The shared I/O subsystem includes a plurality of ports that communicatively couple the computer systems to the shared I/O subsystem where each of the ports includes at least one corresponding bit in an adjustable span port register. Data packets arriving on the plurality of ports may be selectively provided to a span port based on a current state of the adjustable span port register.

System and method for span port configuration

A shared I/O subsystem that includes a plurality of I/O interfaces for coupling a plurality of computer systems where each of I/O interfaces communicatively couples one of the computer systems to the shared I/O subsystem. The shared I/O subsystem receives, at a first one of the I/O interfaces, a data packet from one of the computer systems coupled to the first one of the I/O interfaces where the data packet has a variable length, arranges, at the first one of the I/O interfaces, the data packet into an internal format where the internal format has a first portion that includes data bits and a second portion that includes control bits, receives the data packet in a buffer in the shared I/O subsystem where the second portion is received after the first portion, verifies, with the shared I/O subsystem, that the data packet has been completely received by the buffer by monitoring a memory bit aligned with a final bit in the second portion of the data packet, and transmits, in response to the verifying, the data packet to another one of the computer systems coupled to a second one of the I/O interfaces.

System and method for eventless detection of newly delivered variable length messages from a system area network

A crossbar structure for use in a multi-processor computer system to connect a plurality of processors to at least one shared resource. The crossbar structure comprises for each processor, a storage location for receiving from a respective processor a memory address of a lock control structure associated with the shared resource. When the processor needs to acquire a lock thereto, the crossbar structure, on behalf of the processor, performs memory operations on the lock control structure at the address specified in the storage location in order to acquire the lock on behalf of the processor.

System and method for hardware assisted spinlock

A remote monitoring system providing diagnostic and remedial functions to a computer system. The remote monitoring system comprises a service center and a diagnostic agent. The diagnostic agent is located proximate to the monitored computer system and electronically coupled to the monitored computer system such that the diagnostic agent can retrieve information about the various states of the monitored computer system. The diagnostic agent stores the retrieved information and further processes it for future use. Such information includes fault monitor information, accounting information, system performance information, and system management information. In addition, the diagnostic agent has control over the monitored computer system allowing it to perform diagnostic and remedial functions. Further, the diagnostic agent is electronically coupled to a service center located remotely to the monitored computer system. In the context of fault monitoring operations, the diagnostic agent interrogates the monitored computer system for information related to malfunctions. Moreover, the diagnostic agent interacts with the service center through a communication interface to retrieve various diagnostic and remedial information related to discovered computer system operability problems. The diagnostic agent uses the retrieved information to overcome the discovered problems. Alternatively, the remote monitoring system used as an information tool for a business model to provide remedial services for computer systems.

Remote computer system monitoring and diagnostic board

An enhanced cache line directory entry includes at least one affinity bit that indicates an affinity for a particular type of cache line ownership. The affinity bit is used to modify a request for a cache line in accordance with the indicated affinity. The affinity bit may represent an affinity for read-only requests, and the affinity bit may represent an affinity for read-write requests. For example, if an I/O affinity bit is in the set state and an I/O device requests a cache line with read-write permission, the request may be converted to a read-only request in accordance with the indicated affinity. As another example, if a processor affinity bit is in the set state and a processor requests a cache line with read-only permission, the request may be converted to a read-write request. Software control of the affinity bits enables system performance to be tuned and cache coherency operations can thereby be reduced.

Software controlled cache line ownership affinity enhancements in a multiprocessor environment

In a heterogenous symmetric multi-processing system, processors from distinct families of processors are integrated on a single platform. The processors are coupled to an implementation specific communication mechanism through family specific bus interface converters. Shared memory and I/O subsystems may be coupled to the implementation specific communication mechanism as well. An operating system maintains separate ready queues for each family of processors. Each ready queue is responsible for scheduling execution of process threads on its associated family of processors. The operating systems facilitates execution of both single mode binary code files and mixed mode binary code files. When a thread is created, the operating system determines the initial processor family to associate with the thread based on the binary code stream that the thread will begin executing. The thread is placed in the ready queue of that family. As the thread executes it may require services from another family of processors in order to natively execute the next set of instructions in the binary code file. When services are required, the operating system reschedules those instructions on a processor which executes those instructions natively. Means are provided to return the thread to a processor in the previous family of processors in order to support mixed mode instruction stream subroutine support.

Heterogeneous symmetric multi-processing system

A configurable semiotic decision making system and method is provided. The system has a sensor for sensing input data. A generic semiotic module is used for semiotic processing of the data. The module has configurable dyadic and triadic operating modes. An allocatable memory stores knowledge base data generated in conjunction with semiotic processing by the generic semiotic module when the module processes data in a selected dyadic or triadic configured mode. The configurable operating modes of the generic semiotic module each have a specified data input, semiotic processing type, knowledge base memory allocation and output. One operating mode has the sensor as its data input and is configured for dyadic processing of said sensed data.

Autognomic decision making system and method

A semiotic decision making system operates to respond, for example, to natural language queries. The system operates independent of the type of symbolic elements in which queries are cast. A training corpus of information in the form of sequential sets of a selected type of element is input to the system and processed by a semiotic processing module to create a knowledge database based upon the lineal relationship of elements within the training corpus. The knowledge database is then used to make decisions relating to queries input in the same type of elements. Accordingly, inputting a French training corpus results in a knowledge base useful in answering French questions. Multiple semiotic processing modules may be used to enhance performance.

Semiotic decision making system for responding to natural language queries and components thereof

A method, system, and computer program product specifies a communication intraconnect architecture that supports a pull model based data communication where data is sent to a receiver along with a memory address (a receiver buffer address or a reference to a pool manager or buffer pool) where the data is to be stored. CIA primitives are used to create nodes and dialog objects managed by send and receive IFEs. A logical dialog is established between corresponding send and receive dialog objects. A send dialog object includes a reference that identifies for the send IFE the corresponding receive dialog object in the receive IFE. The receive dialog object includes a reference that identifies for the receive IFE the corresponding send dialog object in the send IFE. Receive and send primitives are used to provide pull model data communication over a logical dialog. Receive with Buffer and Receive with Buffer Pool operations are provided. Multiple, full duplex, reliable virtual circuit connections can be provided for each node. Multiple dialog objects can reference a single node. Multiple outstanding CIA primitive operations are allowed on each dialog. Dialogs can handle byte stream or message oriented data Dialog operations and features further include scatter and gather support, Early-Far-End and Far-End send classes of service, automatic recurring receive option, partial sends and receives messages with substantially no restrictions on send/rcv lengths, and multiple dialog priorities. A user level management dialog is established to manage establishment of logical dialogs. Various dialog establishment services can be used. Buffer pool and pool manager operations provide address bound checking, buffer pool credits, low water mark notification, and data binding to flirter optimize data transfer performance.

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Malvern, PA, United States of America

Duane J McCrory