36 results about "Random replacement" patented technology

A system, method, and computer program product that captures performance-characteristic data from the execution of a program and models system performance based on that data. Performance-characterization data based on easily captured reuse distance metrics is targeted. Reuse distance for one memory operation may be measured as the number of memory operations that have been performed since the memory object it accesses was last accessed. Separate call stacks leading up to the same memory operation are identified and statistics are separated for the different call stacks. Methods for efficiently capturing this kind of metrics are described. These data can be refined into easily interpreted performance metrics, such as performance data related to caches with LRU replacement and random replacement strategies in combination with fully associative as well as limited associativity cache organizations. Methods for assessing cache utilization as well as parallel execution are covered. The method includes modeling multithreaded memory systems and detecting false sharing coherence misses.

A system for, method of and computer program product captures performance-characteristic data from the execution of a program and models system performance based on that data. Performance-characterization data based on easily captured reuse distance metrics is targeted, defined as the total number of memory references between two accesses to the same piece of data. Methods for efficiently capturing this kind of metrics are described. These data can be refined into easily interpreted performance metrics, such as performance data related to caches with LRU replacement and random replacement strategies in combination with fully associative as well as limited associativity cache organizations. Methods for assessing cache utilization as well as parallel execution are covered.

The invention discloses a statistical testing method of copy number consistency variation region in multiple samples. The method comprises the steps that a quasi synthetic curve is constructed based on the relation coefficients of the copy digital points, the derivative value of each digital point is calculated, significant derivative values are tested through the hypothesis test method, and a variable candidate region for the copy numbers is built from the determination of the breakpoint of the copy numbers; a hypothesized null distribution is constructed through the method of randomly replacing the CNVs on the two directions of the whole genome group and the samples, and the copy number consistency variable region in multiple samples is tested. According to the method, directly using the read number of sequence is avoided, certain sequence mistakes and noises can be accommodated, and a boundary of the variable region for the copy numbers can be relatively accurately located;based on the random replacements of the CNVs on the two directions of the whole genome group and the samples, compared to the replacements on a single direction, more real head distribution of the hypothesis test can be obtained by the method; meanwhile the test of the diversified consistency variable CNVs, namely, the variable region of the copy number consistency existed in multiple sample subclasses, is facilitated.

An embodiment of the invention discloses a noise reducing method and a noise reducing system based on random replacement. The noise reducing method includes steps of setting initialized parameters; performing edge detection to input images, judging whether current pixels are in flat areas or not according to detection results; if so, then calculating substitution point identity values; reading substitution point coordinates of current points from a substitution template according to the substitution point identity values, and then substituting the substitution points for the current points. The invention further discloses a noise reducing system based on random replacement. The noise reducing system comprises an initialized parameter setting unit, an edge detection unit, a substitution point identity calculating unit, a substitution point coordinate reading unit and a substitution unit. By the noise reducing method and the noise reducing system based on random substitution, noise signals in images are 'scattered' to the surrounding areas, and render noises and most Gaussian noises are reduced effectively.

The invention discloses a fault-tolerant method for constructing a data center network based on a cross-cube network, which belongs to the cross-technical field of computer and mathematics. The present invention comprises the following steps: according to the definition rule of CQn, generates the association matrix code of CQn, obtains the adjacency point of each vertex of CQn, saves the adjacency relation between the vertices in the association matrix, generates error set afterwards, eliminates in the association matrix Error set, and finally perform depth-first traversal on the remaining sub-matrix to find the required path, that is, to judge whether there is a cycle of a specified length in the matrix and record a qualified cycle. The remaining sub-matrix is ​​the part of CQn after removing the error subset. The present invention adopts the cross cube network CQn to construct an efficient, fault-tolerant and scalable data center network, and its fault-tolerant capability is n-2, that is, when n-2 errors occur in the network, the rest of the system can still be guaranteed to operate normally , which improves the fault tolerance capability of the system, and also improves the topological performance such as scalability and reliability of the data center network.

The invention discloses a data center scheduling system and method. The scheduling system can determine the time and path allocation scheme by generating a fat tree conflict-free path set, thereby ensuring the unity of time allocation and path allocation. Including: the information interaction between the central controller and the data layer, and the scheduling strategy of the central controller. The central controller needs to collect the virtual queue length information from the server, determine the scheduling scheme according to the virtual queue length information and the randomly selected conflict-free data set, and then feed back the scheduling scheme information to the server and the uplink switch. The scheduling system designed in the present invention only needs the length of the virtual queue at the current moment and the information of the non-conflicting path set used at the previous moment, and generates the non-conflicting path set used at the current moment by randomly replacing part of the paths, which can achieve zero delay in network transmission . The path replacement strategy adopted is only related to the length of the virtual queue, and the optimal throughput can be achieved by designing the replacement probability reasonably.

The invention relates to a manufacturing method of a backup spinning nozzle. A debugged spinning nozzle is removed from a spinning machine, and a silica gel plug is used for quickly sealing the serum inlet of the spinning nozzle; low-viscosity synthetic ester is applied on the surface of the spinning nozzle; the spinning nozzle is wrapped by a freshness preservation film, and put into a vacuum packaging bag to be vacuumized; and the spinning nozzle which is packaged under a vacuum condition is put into a spinning nozzle box to be stored at room temperature. The manufacturing method of the backup spinning nozzle has a higher spinning nozzle use success rate. The manufacturing method and the operation are simple, no acetone or low temperature is used for storage, no hidden safety hazard exists, and the cost is low. The manufacturing method of the backup spinning nozzle can be widely applied to production startup, the operation of replacing the spinning nozzle due to the replacement of tow specification and the random replacement of abnormal spinnerets of the spinning nozzle on a production line, significantly the broken head recovery time and the startup time or the time for replacing the spinning nozzle due to the replacement of the tow specification is reduced, the product quality can be improved, the cost can be reduced, and the production efficiency can be improved.

A light-weight file encryption and decrypting and recovering method in an NTFS file system belongs to the technical field of information security. The method comprises the following steps: selecting a proper data block replacement method to overwrite data following the attribute of a file referred to by a legal file path according to encryption options selected by a user, and storing a seed generating a random data block replacement sequence; then generating a reverse replacement sequence according to the seed generating the random data block replacement sequence to overwrite the data of a file referred to by a legal file path, thus recovering raw data. The method helps achieve the purposes of encrypting light-weight files and preventing file reconstruction and data intrusion by optimallyselecting random replacement file data blocks according to structural properties of the NTFS file system.