System, method, and computer program product for remote graphics processing
Granted: June 24, 2014
Patent Number:
8760456
A system, method, and computer program product are provided for remote rendering of computer graphics. The system includes a graphics application program resident at a remote server. The graphics application is invoked by a user or process located at a client. The invoked graphics application proceeds to issue graphics instructions. The graphics instructions are received by a remote rendering control system. Given that the client and server differ with respect to graphics context and…
Load balancing for parallel tasks
Granted: April 29, 2014
Patent Number:
8713576
Techniques for balancing processing loads when performing parallel tasks on one or more processing nodes that share memory resources are provided. For some embodiments, the techniques involve distributing work according to an alternate block cyclic distribution scheme of at least one dimension, wherein work processes are assigned to sets of threads in at least first and second adjacent blocks based on round-robin manner according to a first sequence and an alternate round-robin manner…
Clustered filesystem with membership version support
Granted: March 25, 2014
Patent Number:
8683021
A computer system with read/write access to storage devices creates a snapshot of a data volume at a point in time while continuing to accept access requests to the mirrored data volume by copying before making changes to the base data volume. Multiple snapshots may be made of the same data volume at different points in time. Only data that is not stored in a previous snapshot volume or in the base data volume are stored in the most recent snapshot volume.
System and method for removing data from processor caches in a distributed multi-processor computer system
Granted: January 21, 2014
Patent Number:
8635410
A processor interface (24) receives a flush request from a processor (700) and performs a snoop operation to determine whether the data is maintained in a one of the local processors (700) and whether the data has been modified. If the data is maintained locally and it has been modified, an identified local processor (700) receives the flush request from the processor interface (24) and initiates a writeback to a memory directory interface unit (24). If the data is not maintained locally…
Network filesystem asynchronous I/O scheduling
Granted: January 21, 2014
Patent Number:
8635256
Resource acquisition requests for a filesystem are executed under user configurable metering. Initially, a system administrator sets a ratio of N:M for executing N read requests for M write requests. As resource acquisition requests are received by a filesystem server, the resource acquisition requests are sorted into queues, e.g., where read and write requests have at least one queue for each type, plus a separate queue for metadata requests as they are executed ahead of any waiting…
Real-time storage area network
Granted: November 19, 2013
Patent Number:
8589499
A cluster of computing systems is provided with guaranteed real-time access to data storage in a storage area network. Processes issue request for bandwidth reservation which are initially handled by a daemon on the same node as the requesting processes. The local daemon determines whether bandwidth is available and, if so, reserves the bandwidth in common hardware on the local node, then forwards requests for shared resources to a master daemon for the cluster. The master daemon makes…
High density computer equipment storage system
Granted: November 12, 2013
Patent Number:
8582290
This relates to the manner in which computers are configured in a given area in order to conserve space and to deal with cooling issues associated with the close housing of a large number of computers. Efficient arrangements for efficiently increasing the density of computer configurations are shown, particularly when used in a network server or host environment.
System, method, and computer program product for remote graphics processing
Granted: November 12, 2013
Patent Number:
8581917
A system, method, and computer program product are provided for remote rendering of computer graphics. The system includes a graphics application program resident at a remote server. The graphics application is invoked by a user or process located at a client. The invoked graphics application proceeds to issue graphics instructions. The graphics instructions are received by a remote rendering control system. Given that the client and server differ with respect to graphics context and…
Clustered file systems for mix of trusted and untrusted nodes
Granted: November 5, 2013
Patent Number:
8578478
A cluster of computer system nodes share direct read/write access to storage devices via a storage area network using a cluster filesystem. At least one trusted metadata server assigns a mandatory access control label as an extended attribute of each filesystem object regardless of whether required by a client node accessing the filesystem object. The mandatory access control label indicates the sensitivity and integrity of the filesystem object and is used by the trusted metadata…
Clustered filesystem with data volume snapshot maintenance
Granted: September 3, 2013
Patent Number:
8527463
A computer system with read/write access to storage devices creates a snapshot of a data volume at a point in time while continuing to accept access requests to the mirrored data volume by copying before making changes to the base data volume. Multiple snapshots may be made of the same data volume at different points in time. Only data that is not stored in a previous snapshot volume or in the base data volume are stored in the most recent snapshot volume.
System and method of synchronizing real time clock values in arbitrary distributed systems
Granted: July 30, 2013
Patent Number:
8498315
A system for establishing a primary master node in a computer system includes a plurality of nodes, each node configured with an update interval, a hierarchy of master nodes selected from the plurality of nodes, wherein the master nodes are configured to synchronize the plurality of nodes with a clock value by sending out its clock value when its update interval has expired, wherein each node resets its update interval when it receives the clock value, a primary master node selected from…
Method for equitable resource sharing between local and network filesystems
Granted: May 7, 2013
Patent Number:
8438575
Computing resources shared by local and network filesystems may be used to maximum capacity by a single application, or equitably shared by multiple applications under heavy load. A portion of the resources are set aside for local filesystem use and a small number is reserved for each network filesystem. The remaining resources may be used by either local or network filesystems. An enforcement limit puts a ceiling on the number of resources that can be used by a single network…
Computer system with dual operating modes
Granted: April 30, 2013
Patent Number:
8433902
A system switches between non-secure and secure modes by making processes, applications, and data for the non-secure mode unavailable to the secure mode and vice versa. The process thread run queue is modified to include a state flag for each process that indicates whether the process is a secure or non-secure process. A process scheduler traverses the queue and only allocates time to processes that have a state flag that matches the current mode. Running processes are marked to be idled…
Network topology for a scalable multiprocessor system
Granted: April 30, 2013
Patent Number:
8433816
A system and method for interconnecting a plurality of processing element nodes within a scalable multiprocessor system is provided. Each processing element node includes at least one processor and memory. A scalable interconnect network includes physical communication links interconnecting the processing element nodes in a cluster. A first set of routers in the scalable interconnect network route messages between the plurality of processing element nodes. One or more metarouters in the…
Rack mounted computer system
Granted: April 30, 2013
Patent Number:
8432689
A rack mounted computer system. In one variation the computer rack is configured for side-by-side placement of computers. In another variation, the computer rack includes flanges for supporting the placement of computer units within the rack. In another variation the computer rack is configured with retaining clips. In yet another variation, the computer rack is configured to receive computers with chassis that are adapted for side-by-side placement.
System, method, and computer program product for remote graphics processing
Granted: April 23, 2013
Patent Number:
8427491
A system, method, and computer program product are provided for remote rendering of computer graphics. The system includes a graphics application program resident at a remote server. The graphics application is invoked by a user or process located at a client. The invoked graphics application proceeds to issue graphics instructions. The graphics instructions are received by a remote rendering control system. Given that the client and server differ with respect to graphics context and…
Data coherence method and apparatus for multi-node computer system
Granted: March 26, 2013
Patent Number:
8407424
A method and apparatus for maintaining data coherency in a computer system having a plurality of nodes forms a directory by grouping the nodes into a plurality of hierarchical groups of two or more levels. The method and apparatus also 1) set the directory to have data relating to a first set of groups within a first level, and 2) determine if a requesting node requesting data is a member of one of the first set of groups. The directory then is set to have data relating to a second group…
Method for performing cache coherency in a computer system
Granted: March 19, 2013
Patent Number:
8402225
In a computing system, cache coherency is performed by selecting one of a plurality of coherency protocols for a first memory transaction. Each of the plurality of coherency protocols has a unique set of cache states that may be applied to cached data for the first memory transaction. Cache coherency is performed on appropriate caches in the computing system by applying the set of cache states of the selected one of the plurality of coherency protocols.
Multi-class heterogeneous clients in a clustered filesystem
Granted: March 12, 2013
Patent Number:
8396908
A cluster of computer system nodes connected by a storage area network include two classes of nodes. The first class of nodes can act as clients or servers, while the other nodes can only be clients. The client-only nodes require much less functionality and can be more easily supported by different operating systems. To minimize the amount of data transmitted during normal operation, the server responsible for maintaining a cluster configuration database repeatedly multicasts the IP…
System and method for conveying information
Granted: December 4, 2012
Patent Number:
8327015
A system and method for conveying data include the capability to determine whether a transaction request credit has been received at a computer module, the transaction request credit indicating that at least a portion of a transaction request message may be sent. The system and method also include the capability to determine, if a transaction request message is to be sent, whether at least a portion of the transaction request message may be sent and to send the at least a portion of the…
