| Patent application number | Description | Published |
|---|
| 20080288496 | METHOD FOR IMPLEMENTING CONCURRENT PRODUCER-CONSUMER BUFFERS - A method and a system for implementing concurrent producer-consumer buffers are provided. The method and system in one aspect uses separate locks, one for putter and another for taker threads operating on a concurrent producer-consumer buffer. The locks operate independently of a notify-wait process. | 11-20-2008 |
| 20090019247 | Bufferless Transactional Memory with Runahead Execution - A method for executing an atomic transaction includes receiving the atomic transaction at a processor for execution, determining a transactional memory location needed in memory for the atomic transaction, reserving the transactional memory location while all computation and store operations of the atomic transaction are deferred, and performing the computation and store operations, wherein the atomic transaction cannot be aborted after the reservation, and further wherein the store operation is directly committed to the memory without being buffered. | 01-15-2009 |
| 20090063783 | METHOD AND APPARTAUS TO TRIGGER SYNCHRONIZATION AND VALIDATION ACTIONS UPON MEMORY ACCESS - A system and method to trigger synchronization and validation actions at memory access, in one aspect, identifies a storage class associated with a region of shared memory being accessed by a thread, determines whether the thread holds the storage class and acquires the storage class if the thread does not hold the storage class, identifies a programmable action associated with the storage class and the thread, and triggers the programmable action. One or more storage classes are respectively associated with one or more regions of shared memory. An array of storage classes associated with a thread holds one or more storage classes acquired by the thread. A configurable action table associated with a thread indicates one or more programmable actions associated with a storage class. | 03-05-2009 |
| 20090177847 | SYSTEM AND METHOD FOR HANDLING OVERFLOW IN HARDWARE TRANSACTIONAL MEMORY WITH LOCKS - A system, method and computer program product for processing overflow transactions in a transactional memory system. The transactional memory system is provided in a multiprocessing system having one or more processor devices and a shared memory storage system, and implements a best effort hardware transactional memory system. The method includes acquiring, by a requesting processor, lockbits associated with a memory structure of the shared memory storage system to be reserved for an overflowing transaction. The lockbits determine the granularity at which memory reservations for an overflow transaction are recorded. The method includes implementation of control mechanism for controlling concurrency between overflowing and non-overflowing transactions requested by processor devices in the multiprocessing system, the method enabling only one overflowing transaction to execute at a time in the multiprocessing system. | 07-09-2009 |
| 20090177871 | ARCHITECTURAL SUPPORT FOR SOFTWARE THREAD-LEVEL SPECULATION - A system for thread-level speculation includes a memory system for storing a program code, a plurality of registers corresponding to one or more execution contexts, for storing sets of memory addresses that are accessed speculatively, and a plurality of processors, each providing the one or more execution contexts, in communication with the memory system, wherein a processor of the plurality of processors executes the program code to implement method steps of dividing a program into a plurality of epochs to be executed in parallel by the system, wherein one of the epochs is executed non-speculatively and the other epochs are executed speculatively, determining a current epoch to be executed on an execution context, encoding addresses read during execution of the current epoch, encoding addresses written during execution of predecessor epochs of the current epoch, and encoding addresses written during execution of successor epochs of the current epoch. | 07-09-2009 |
