摘要:
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.
摘要:
A method for communicating active messages among nodes of a parallel processing computer system is disclosed. The active messages are defined by .mu.threads, and the method comprises the steps of: (a) generating a .mu.thread comprising an instruction pointer, frame pointer, and Local Parameters pointer from a first node to a second node; and (b) performing a procedure on a data structure in accordance with the .mu.thread. The instruction pointer points to an application specific procedure in system memory, and the frame pointer points to an application specific data structure in system memory. The Local Parameters pointer points to one or more words of additional data or parameters stored in memory mapped device registers or system memory.
摘要:
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.
摘要:
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.
摘要:
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 further optimize data transfer performance.
摘要:
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 further optimize data transfer performance.
摘要:
Apparatus and method for coordinating cache coherency between host cache memories in a distributed information system in a system which comprises at least one main storage memory coupled to a plurality of host computers through controllers. Each host computer includes a host cache controller which maintains the state of the data stored in its associated memory and maintains communicating with a main memory controller for participating in the control of coordinated reading and writing of data between the host cache memories and the main storage memory. The system maintains cache coherency by the exchange of commands between the main memory controller and the hosts cache controllers each of which define the state of the blocks of data stored in the host cache memories.
摘要:
A low latency software and hardware interface between a microprocessor and Network Interface Unit is disclosed. The Network Interface Unit interfaces to the microprocessor's Level 2 cache interface, which provides burst transfers of cache lines between the microprocessor and Network Interface Unit. The Network Interface Unit is memory mapped into the microprocessor's address space. Two memory mapped cache lines are used to write commands to the Network Interface Unit's Write Window and another two cache lines are used to read results of the commands from the Network Interface Unit's Read Window. The Write Window is a three port register file. Data is written into one write port and read simultaneously from two read ports. One read port is used during read operations to the Write Window while the other is used during command execution to move data to the Internal Structures block. The Read Window is a 2-1 multiplexor that is 128 bits wide. On a read operation data may be selected from the Write Window or the Internal Structures.
摘要:
Apparatus for implementing input/output (I/O) operations in a computer system operating under the control of a UNIX* operating system includes a dedicated communications processor in addition to the main or host processor. These two processors communicate via a shared memory which may be independently accessed by each processor. The functions performed by the terminal I/O driver and the line discipline modules are divided between the host and communications processors. The communications processor performs all canonical processing of the data received from the terminal I/O devices. It also maintains a data structure that indicates the instantaneous status of each terminal I/O device. Using this data structure, the communications processor is able to operate in a substantially interrupt-free environment, polling only those I/O devices that are indicated, in the status data structure, as needing service. A message facility in the shared memory controls communication between the processors. Each processor sends messages to the other through a dedicated circular queue. To receive a message, a processor examines the sending queue of the other processor. Response messages are sent back to the sending processor using the same message buffer as was used for the original message.*UNIX is a trademark of AT&T
摘要:
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.