摘要:
Disclosed is a method for management of a modular power source including the steps of setting a first operation threshold, selecting a module 10, retrieving data representative of the operating condition of the module 10, retrieving data representative of the time, storing the newly retrieved data, comparing the newly retrieved data to historical data representative of historical operating conditions of the module 10, determining a second operation threshold for the module 10 relative to the comparison, applying the second operation threshold for the module 10, and selecting the next module 10.
摘要:
A shorter and a longer text string may be compared. Instead of simply comparing the characters only one character at a time, more than one character can be compared at a time. In addition, a null terminated string may be detected. The shorter strings may be handled differently than longer strings.
摘要:
Method and apparatus to enable I/O agents to perform atomic operations in shared, coherent memory spaces. The apparatus includes an arbitration unit, a host interface unit, and a memory interface unit. The arbitration unit provides an interface to one or more I/O agents that issue atomic transactions to access and/or modify data stored in a shared memory space accessed via the memory interface unit. The host interface unit interfaces to a front-side bus (FSB) to which one or more processors may be coupled. In response to an atomic transaction issued by an I/O agent, the transaction is forked into two interdependent processes. Under one process, an inbound write transaction is injected into the host interface unit, which then drives the FSB to cause the processor(s) to perform a cache snoop. At the same time, an inbound read transaction is injected into the memory interface unit, which retrieves a copy of the data from the shared memory space. If the cache snoop identifies a modified cache line, a copy of that cache line is returned to the I/O agent; otherwise, the copy of the data retrieved from the shared memory space is returned.
摘要:
In general, in one aspect, the disclosure describes a method that includes generating multiple cache line accesses to multiple respective cache lines of a cache as required to satisfy an access to data specified by a single instruction of a processing element specifying an access to data.
摘要:
In general, in one aspect, the disclosure describes a method that includes providing a memory access instruction of a processing element's instruction set including multiple parameters. The parameters include at least one address and a token specifying whether the instruction should cause data retrieved from memory in response to the memory access instruction to be unavailable to a subsequent memory access instruction via a cache
摘要:
A method for determining an estimated runtime of a software application, the method including the providing of a reference runtime of the software application for a reference system configuration, wherein the reference system configuration includes a processor, a processor bus and at least one processor service component, the providing of a processor bus utilization parameter associated with the reference system configuration, the providing of a first processor bus queue statistic associated with the reference runtime, the providing of a second processor bus queue statistic associated with the reference runtime, and determining the estimated runtime based on the reference runtime, the processor bus utilization parameter, the first processor bus queue statistic and the second processor bus queue statistic.
摘要:
In some embodiments, the invention involves a network controller having a pattern matching unit to identify whether boot file requested from a network accessible storage device for booting are stored locally in non-volatile memory accessible to the network controller. When required boot files are stored locally, the locally stored files are sent to the processor to boot the operating system. In an embodiment, retrieved boot files are automatically cached by the network controller in the accessible non-volatile memory. In other embodiments, a service operates to ensure coherency between locally store boot files and the boot filed stored on the network accessible storage. In another embodiment, data other than boot files may be stored and retrieved from the non-volatile memory. Other embodiments are described and claimed.
摘要:
A method and apparatus to enable programmatic control of cache line eviction policies. A mechanism is provided that enables programmers to mark portions of code with different cache priority levels based on anticipated or measured access patterns for those code portions. Corresponding cues to assist in effecting the cache eviction policies associated with given priority levels are embedded in machine code generated from source- and/or assembly-level code. Cache architectures are provided that partition cache space into multiple pools, each pool being assigned a different priority. In response to execution of a memory access instruction, an appropriate cache pool is selected and searched based on information contained in the instruction's cue. On a cache miss, a cache line is selected from that pool to be evicted using a cache eviction policy associated with the pool. Implementations of the mechanism or described for both n-way set associative caches and fully-associative caches.