1374 results about "Access method" patented technology

A metadata access method, apparatus, and computer-readable storage medium for efficient metadata retrieval through cache management. The method receives metadata query requests including target index information from processes and performs matching operations on a global cache file containing records with index information and slot identifiers. Each cache description array corresponds to memory blocks caching metadata. Upon successful matching, the target cache description array is accessed using the target slot identifier. The data state of target metadata is determined from the cache description array, and target address information indicating the location of the target memory block in shared memory is obtained and returned to the requesting process, enabling efficient shared memory-based metadata access.

The invention discloses an access method, device and equipment and a computer readable storage medium, which are applied to the technical field of computers, and comprise the following steps: loading a consistency label list corresponding to an authorized access consistency domain; when an access request is initiated to a target consistency domain in the shared memory, performing permission verification on the access request through the consistency label list and the target consistency domain; when the permission verification is passed, determining whether an access conflict exists or not through a local access state cache and the type of the access request; if the access conflict exists, a controller arbitration engine is triggered, and the access request is executed according to an arbitration result; and if the access conflict does not exist, executing the access request. According to the method, the consistency label list and the access state cache are formulated for each device, the consistency problem existing when multiple devices access the shared memory in an existing system is solved, and efficient, low-conflict and flexible consistency guarantee can be achieved under the scene that multiple devices concurrently access the shared memory.

The invention discloses a memory access method and device, a storage medium and a program product, and relates to the technical field of memory access, comprising: monitoring memory access information of a target memory; the memory access information comprises a missing page address sequence during memory access, an address distribution characteristic when an address conversion failure event occurs in an address conversion lookaside buffer, a cross-node access event and a virtual memory access frequency; determining corresponding target feature information; the target feature information comprises spatial locality, thermal density, access dispersion and unbalance degree data; and determining a current memory access mode based on the target feature information, and determining a target access strategy from preset memory access strategies configured with different memory page table prefetching rules to access the memory. The memory access feature information is quantified through the memory access information, the corresponding memory access mode is determined, and the corresponding memory page table prefetching rule is executed, so that the traversal delay of the multi-level page table can be reduced, and the memory access performance is improved by fully utilizing the memory bandwidth.

The invention discloses a storage system supporting Cache and RAM double-form access and an access method thereof, and the system comprises a data storage array which is divided into a plurality of structured storage sub-blocks; the storage mode register is used for storing a configuration value, and the configuration value is used for dynamically configuring each storage sub-block to work in a Cache mode or an RAM mode, so that the data storage array works in a full Cache mode or a full RAM mode or a Cache and RAM coexistence mode; and the storage access control logic is used for arbitrating the storage access request, mapping the storage access request to the corresponding storage sub-block for read-write access according to the access address and the configuration value, activating the storage sub-block mapped by the storage access request, and inactivating the storage sub-block not mapped by the storage access request. According to the method, dynamic configuration is achieved, access of Cache and RAM forms is supported at the same time, part of or all memory banks can be configured to be Cache or RAM, the advantages of the two memory forms are utilized at the same time, parallel access of a plurality of memory sub-blocks is supported, use is flexible and efficient, and power consumption is reduced.

The invention discloses an equipment access method, device and equipment based on address space identification. The method is applied to simplifying an equipment memory management unit and comprises the steps of establishing each single-level range table; acquiring an equipment access request, reading an address space identifier and a virtual address from the equipment access request, and matching a corresponding target range table from each single-level range table based on the address space identifier; and calculating a target physical address according to the target range table and the virtual address, and establishing equipment access based on the target physical address. By replacing a traditional multi-level page table with a single-level structure, the data structure design of address mapping is simplified, the dynamic configuration complexity is reduced, and hardware formal verification is facilitated. Through direct matching of the address space identifier, the traditional steps of analyzing the equipment identity identifier and querying the external table item are omitted, and the external memory access frequency is reduced. By calculating the target physical address and establishing access, the hardware address conversion logic is simplified, the hardware implementation cost and power consumption are reduced, and the data transmission efficiency is improved.

The invention relates to a distributed storage access method initiated by a GPU (Graphics Processing Unit) in an AI (Artificial Intelligence) scene. The method comprises the following steps: S100: constructing a software cache module and an I / O (Input / Output) queue module in a GPU memory; s200, the GPU thread queries the target data through the software cache module, reads the target data if the target data is hit, and enters the next step if the target data is not hit; s300, when the I / O request is not hit, the repeated I / O requests initiated by multiple threads are automatically combined to generate a single effective I / O request, and the request is written into an I / O queue module; s400, the user mode distributed storage client monitors the written submission queue, reads the target data and then transmits the target data to the software cache module, and a completion queue of the I / O queue module is updated; and S500, the GPU thread polls the updated completion queue, and updates the reference count of the software cache module after reading the data. The main purpose of the invention is to realize high-throughput and low-delay data transmission without the participation of a CPU (Central Processing Unit).

One or more embodiments of the invention provide a unified access method and device for heterogeneous data sources, a storage medium and a program product. The uniform access method for the heterogeneous data sources is applied to a uniform access platform, the uniform access platform maintains a routing rule set for each heterogeneous data source, and the routing rule set is used for describing a query mode of fields, mapped in a virtual view of the uniform access platform, of the heterogeneous data sources in the heterogeneous data sources; the method comprises: receiving a query statement; determining a target virtual view involved in the query statement, and screening out a target routing rule matched with the query field in the query statement from a routing rule set corresponding to the target virtual view; according to the query statement and the target routing rule, generating a query request for a heterogeneous data source pointed by the target virtual view; sending the query request to a heterogeneous data source pointed by the target virtual view to obtain query content; and based on the query content, generating a query result of the query statement and returning the query result.

The invention provides a cross-platform fusion access method, system and device of equipment and electronic equipment, the method is applied to the technical field of Internet of Things, and the method comprises the following steps: a mobile terminal performs security authentication on target central control equipment; the mobile terminal sends a structured configuration file including the equipment information of the plurality of smart home equipment, the region division rule, the scene mode and the linkage rule to the target central control equipment; the target central control equipment receives and analyzes the structured configuration file, and updates the corresponding smart home equipment according to an analysis result; the target central control equipment receives a control instruction of the cloud platform, converts the control instruction into an internal protocol instruction and then issues the internal protocol instruction so as to control the corresponding smart home equipment to execute operation; the target central control device synchronizes the state information of the smart home device to the cloud platform; and when an upgrading instruction of the cloud platform is received, issuing an upgrading task to execute an upgrading process. According to the method, the real-time performance of remote control of the smart home equipment and the accuracy of state feedback are guaranteed.

The present application relates to the technical field of computers, and provides a memory data access method and apparatus, an electronic device and a readable storage medium. The method comprises: acquiring failure information of a memory component; configuring an address space mapping scheme for the failure information; in response to an initial memory access instruction sent by a processor, extracting a memory access address in the initial memory access instruction; on the basis of the memory access address and the address space mapping scheme, acquiring a plurality of target addresses corresponding to the memory access address, wherein target memory access instructions have one-to-one correspondence to the target addresses; executing the target memory access instructions by means of a memory controller so as to write split data, which is obtained after splitting write data sent by the processor, into the target addresses; and splicing read data read from the target addresses, and then returning to the processor.

The invention discloses a memory access method based on a memory expansion controller, a memory expansion card and equipment, and relates to the technical field of computers, and the method comprises the following steps: carrying out twice address mapping on a target access address in a memory read-write instruction through the pre-created memory expansion controller, the target access address is mapped to a hard disk storage space from a processor memory physical address space, whether the mapped access address is hit in a preset cache space or not is judged, and if the mapped access address is hit, read-write operation is directly conducted on corresponding target data in the preset cache space; and if not, performing read-write operation on the corresponding target data in the solid state disk. By means of the mode, the solid state disk can be used as the extended memory of the host, the memory extension cost is remarkably reduced, ultra-large-capacity memory extension can be achieved, accordingly, the memory access cost is reduced, and meanwhile the access speed is taken into account in the mode of presetting the cache space.

The invention relates to the technical field of data security, in particular to a business data security access method based on an intelligent strategy. The method comprises the following steps: constructing a context-aware intelligent permission template library; collecting multi-dimensional context information in real time and normalizing the multi-dimensional context information into feature vectors; authority granting is automatically decided through weighted similarity matching; creating an activated session object and executing dynamic constraint; and continuously monitoring the session risk and dynamically adjusting the authority. According to the method, the tracking identifier is embedded in the data and the data propagation path is monitored, so that the security control on the derivative data is realized, and the problem that the traditional method only controls the original data access and ignores the data diffusion risk is solved. And meanwhile, the session object and the dynamic constraint execution point are activated, so that the whole-process refined management and control of the permission life cycle are realized, and the requirements of service agility and security are balanced.

The invention discloses a hard disk access method of a hard disk backboard, a substrate management controller, a server and a storage medium, and relates to the technical field of server hardware management, and the method comprises the following steps: accessing a register of a programmable logic device with a first preset fixed address in a target hard disk backboard, and obtaining topological information of the target hard disk backboard; determining a target hard disk adaptation type of the target hard disk backboard from a plurality of hard disk adaptation types based on the NVME support state of each port contained in the topological information; and accessing the in-place target hard disk based on the access strategy information matched with the target hard disk adaptation type. The problem of high coupling of the BMC code and the hard disk backboard adaptation type is effectively solved, and the flexibility and expandability of server hardware adaptation are improved.

The invention provides a memory access method and electronic equipment, and is applied to the technical field of accelerator systems. The memory access method comprises the following steps: determining a target memory access strategy from a preset memory access strategy set according to a local memory access feature of any computing core; under the condition that the target memory access strategy is a transmission optimization strategy, position information of the to-be-accessed data in a target cache line is determined according to a target cache line address in an initial memory access request initiated by any computing core; generating a bit mask for identifying the to-be-accessed data according to the position information; and adding the bit mask to the initial memory access request to form a memory access request, sending the memory access request to a target device to which the target cache line address belongs, and returning the to-be-accessed data by the target device according to the bit mask in the memory access request.

The invention discloses a unified access method and system for peripheral equipment of a swan monk system based on hardware abstract virtualization, and relates to the technical field of peripheral equipment management of an operating system. A structured data set S is constructed by detecting a peripheral equipment access event and collecting equipment description information and physical response data of the peripheral equipment; the method comprises the following steps: carrying out data fusion modeling, obtaining an equipment access qualification index Iconn, evaluating the stable state of equipment, carrying out packaging processing on peripheral equipment in the stable state, then carrying out function stability analysis, obtaining a function stability index Fstab, carrying out coupling modeling on the function stability index Fstab and the equipment access qualification index Iconn, obtaining the equipment access qualification index Iconn, and carrying out data fusion modeling on the equipment access qualification index Iconn. According to the method, the peripheral operation state is evaluated, and the peripheral connection state is regulated, so that the peripheral access compatibility is enhanced, the system identification accuracy and the access success rate are improved, and intelligent management of the peripheral access full life cycle is realized.

The invention provides a storage device, a storage method and a storage access method based on lake and warehouse integration. The storage device comprises a storage management unit, a unified metadata management unit and a federal query engine unit, the storage management unit is used for realizing hybrid storage and dynamic hierarchical storage; the unified metadata management unit is used for metadata atlas construction, concurrency control and GDPR compliance support; the federal query engine is used for intelligent routing decision, SQL dialect unification and intelligent push-down optimization; based on a lake and warehouse integrated storage device and an access technology thereof, unified management of structured and unstructured data is supported, the problem of data islands is avoided, and cross-engine data visibility is realized through unified metadata management; according to the lake and warehouse integrated storage device and the access method, technologies such as a dynamic hierarchical storage strategy, intelligent routing decision, intelligent push-down optimization and the like are fused, and the storage and access efficiency and the robustness of the system are greatly improved.

The invention provides a user data access method and device, equipment and a storage medium, and the method comprises the steps: analyzing an authorization code corresponding to a target user when a data access request is received, and obtaining the authorization information of the target user; matching data access meta-information corresponding to the data access request with the authorization information; and if the matching is successful, returning the target data associated with the data access meta-information to the data access request system. Through the implementation of the scheme, the authorization information can be obtained by analyzing the authorization code of the target user, whether the target data needed by the data access request is returned or not is judged according to the authorization information, the authorization code is designed and generated according to the personalized demand of the user, and therefore the user can have the control right to process the personal data of the user, and the user experience is improved. And the access request is ensured to accord with the self-defined authorization range, so that the user data security is effectively improved.

The invention provides a GPU, a data access method, a medium and a program product. Wherein the GPU comprises a rendering core, a GPU bus and a second-level cache; the rendering core sends a target access address of the data to be accessed to the GPU bus; the GPU bus determines a target first index corresponding to the target memory access address, and sends the target memory access address to a second-level cache through a target first memory access channel corresponding to the target first index; the target first index is generated by performing random operation based on a first bit in a binary address of the target first address block; the target first address block is an address block to which the target memory access address belongs in the plurality of first address blocks. According to the embodiment of the invention, the load balance of each access channel can be realized, the utilization rate of the access channels is improved, and the storage bandwidth utilization rate is improved.

The invention belongs to the technical field of Internet of Things big data, and provides a medical Internet of Things oriented multi-role anonymous data sharing access method, which comprises the following steps: S1, system initialization: a PKG performs system initialization and generates system public parameters and private keys; s2, data processing and uploading: the patient terminal device performs initial encryption on patient data, and the edge node generates a corresponding signature and uploads the signature to the cloud server; s3, data access: when the authorized user accesses, the patient terminal equipment initiates a re-encryption request to the cloud server; s4, data deletion: a plurality of cloud servers delete all copies and generate aggregation proof, and submit integrity proof and deletion proof to the edge node for verification; s5, updating the secret key: when the secret key is leaked, marking that the original secret key is invalid, updating the secret key and carrying out re-encryption processing; and S6, expiration disclosure: if the patient data expires, the secret key automatically loses efficacy, and the data are disclosed. The method ensures that the data is really deleted and not tampered, and meets the requirement of high reliability.

The invention provides a multi-core processor chip and a storage access method and device of the multi-core processor chip, and relates to the technical field of computer processors, the multi-core processor chip comprises at least one processor core, the processor core comprises a general processor core, a first address space mapping module and a first core interconnection interface, the universal processor core supports high-speed cache consistency; at least one input / output core grain, wherein the input / output core grain comprises a memory interface, a directory, a second address space mapping module and a second core grain interconnection interface; both the first address space mapping module and the second address space mapping module store an address space mapping table, and the address space mapping table stores a mapping relationship between a memory address accessed by a processor core grain and a memory interface of an input / output core grain; the directory stores cache consistency information of the cache blocks corresponding to the memory interfaces of the input / output core grain and other input / output core grains corresponding to the directory.

The invention belongs to the technical field of data processing, and particularly discloses a multi-source heterogeneous data acquisition access method and system based on intelligent mapping and a dynamic interface, and the method comprises the steps: registering an input data source class, generating a data source identifier corresponding to the data type, and storing the data source identifier; respectively executing meta-model analysis operation to generate a standardized meta-model associated with the data source identifier and a container instance template; generating a mapping rule set through a twin neural network architecture with multi-modal feature fusion and a preset mapping rule; a middle layer API interface is constructed through interface logic, and real-time conversion and access between input and output data are achieved; and realizing containerized parallel access based on the container instance template and the containerized interface service instance. According to the method, data source change is dynamically adapted, the real-time performance and accuracy of the mapping rule are ensured, and meanwhile, multi-source heterogeneous data can be accessed efficiently in real time in combination with containerized parallel processing and a data source change monitoring mechanism.

The invention relates to the field of information security, discloses a service resource access method and device, computer equipment, a computer readable storage medium and a computer program product, and is applied to a server. The method comprises the following steps: in response to a login verification request sent by a client, obtaining a to-be-verified verification code returned by the client; under the condition that the verification code to be verified passes verification, generating a target encryption token according to token element information of the client, and storing the target encryption token to a target database; in response to a resource access request sent by a client, acquiring authentication information; decrypting the encrypted token to be verified according to the access channel information, and acquiring a stored token under the condition that a plaintext token obtained by decryption passes verification; and under the condition that the stored token is matched with the to-be-verified encryption token, sending a target service resource requested to be accessed by the resource access request to the client. By adopting the method, the technical effect of improving the flexibility of a token verification mechanism can be realized.

The invention discloses a zero-trust-based WAPI electric power communication security access method and system and a storage medium, and the method comprises the steps: carrying out the identity authentication of a terminal device, the identity authentication comprising certificate authentication and biological feature authentication, and the biological feature authentication comprising fingerprint authentication; if the identity authentication is passed, starting a dynamic access strategy for the network based on the trust level; monitoring an identity authentication process and a dynamic access process in real time, and continuously performing risk assessment to obtain a risk assessment result; and granting dynamic access authority or directly terminating access based on an evaluation result. According to the invention, through dynamic fingerprint authentication and dynamic granting of the access authority, fine-grained access control is carried out on resources while the security is ensured, the reliability and service continuity of the system can be improved, and unauthorized access and potential network attacks can be effectively prevented.

The invention relates to a hardware simulation accelerator multi-user access method, system and device and a storage medium, and is applied to the technical field of hardware simulation accelerators, and the method comprises the following steps: distributing a plurality of resource blocks for different users in a hardware simulation accelerator to obtain a user resource block corresponding table; virtualizing the plurality of PCIe devices in the host interface card to obtain a plurality of mutually independent virtual function devices; constructing a plurality of device driving programs corresponding to the plurality of virtual function devices in the host server; binding a plurality of corresponding equipment driving programs for different users in the host server to obtain equipment driving program binding information; and performing multi-user access of the hardware simulation accelerator according to the user resource block corresponding table, the device driver binding information and the plurality of virtual function devices. The method has the technical effect that the multi-user access to the hardware simulation accelerator can be realized faster and more stably.

The invention provides an access method and device of Internet of Things equipment and an Internet of Things system, and relates to the technical field of Internet of Things. The method is applied to an Internet of Things gateway, and comprises the following steps: obtaining configuration data of an Internet of Things device to be accessed according to unique identification information of the Internet of Things device to be accessed; assembling function points of the object model according to the configuration data in combination with an equipment function model library so as to obtain a target object model of the to-be-accessed Internet of Things equipment; and sending the target object model to the terminal, so that the terminal controls the to-be-accessed Internet of Things device based on the target object model. According to the method and the device, the equipment function model library for unifying the abstract equipment capability is constructed, and the function point assembly of the unique identification information object model of the to-be-accessed Internet of Things equipment is combined, so that dynamic configuration is realized. The problems of low reusability, poor compatibility and high maintenance difficulty in a traditional equipment access mode can be effectively solved, the access period is greatly shortened, and the equipment access development workload and the maintenance cost are reduced.

The invention provides a data cache access method and device of a multi-core processor, and relates to the technical field of computer processors. The method comprises the following steps: accessing a data cache according to an access instruction, and responding to the access instruction to hit access data and write back the access data, or responding to the access instruction to not hit the access data, fetching back-filling data from a memory access failure queue and forwarding the back-filling data to the access queue. Accessing the data cache according to the data storage instruction, writing the stored data into the data cache in response to the access hit of the data cache, or calling a stored data retransmission unit in response to the access miss of the data cache; and sending a data storage failure request to the memory access failure queue, and taking back the backfill data and / or authority by the memory access failure queue. According to the method, the flexibility of the processing mode of the data cache access pipeline on the memory access instruction and the external consistency request can be improved, the access parallelism degree is improved, and the hardware resource utilization rate of the processor is increased.

The invention discloses a file access method and a related device, a cache mode of first-level storage and second-level storage is adopted, the first-level cache and the second-level cache store fragments of a file instead of the whole file, and in response to an access request of an application end to a target fragment, under the condition that the target fragment is stored in the second-level cache, the access request of the application end to the target fragment is responded to. The whole file does not need to be loaded, and only the target fragment needs to be loaded from the second-level cache to the first-level cache, so that the storage occupation amount of the first-level cache is reduced. Under the condition that the target fragment is stored in the first-level cache, the position information of the target fragment is sent to the application end, so that the application end directly accesses the target fragment in the first-level cache according to the position information of the target fragment, the throughput in a high-concurrency scene is improved, and the access delay is shortened.

The invention relates to the technical field of microelectronics, and discloses a three-dimensional stacked near-memory computing architecture, a chip and a data access method. The memory device comprises at least one computing chip layer and at least one memory chip layer which are stacked along a first direction, a plurality of vertical interconnection channels extending along the first direction; the memory chip layer comprises a plurality of memory banks; the computing chip layer comprises a plurality of computing cluster units; the computing cluster unit comprises at least one storage controller; and the storage controller is connected with at least one of the plurality of storage banks through the vertical interconnection channel and is used for managing data in the correspondingly connected storage banks. The problems that in a three-dimensional stacking computing architecture, storage access delay is high, and the bandwidth expansion capacity is limited are solved.

The invention relates to the technical field of equipment communication management, in particular to a signal processor access method and computer equipment, and the method comprises the steps that in response to system power-on, a first controller sets an access enable signal to be in an invalid state so as to limit a management controller to access a signal processor; obtaining the model of the signal processor, and determining fixed delay according to the model of the signal processor; starting timing in response to detection of completion of loading of the signal processor; acquiring environmental parameters of the signal processor and determining compensation delay according to the environmental parameters; determining target delay according to the fixed delay and the compensation delay; triggering the management controller to access the signal processor in response to the arrival of the target delay time; through the method, the chip access timeliness can be improved, and the chip communication interruption influence range can be reduced.

The invention relates to the technical field of data transmission, in particular to a multi-source heterogeneous device data unified access method based on cloud edge collaboration, which comprises the following steps of: determining a storage demand degree according to a network transmission interference condition at each moment in a data uploading process and a compression storage duration condition of breakpoint data at an edge gateway; obtaining a breakpoint data storage amount and a historical storage demand stability index in the edge gateway at each moment, and determining a correction compression rate of each piece of breakpoint data to be transmitted in combination with a storage demand degree; determining the correlation degree of each piece of to-be-transmitted breakpoint data according to the number of tasks and the usage ratio; determining each transmission priority index according to the correlation degree, the data size and the correction compression ratio; and sequentially transmitting the compressed breakpoint data to be transmitted to a cloud server according to the transmission priority index. According to the method, the transmission priority index of the breakpoint data is adaptively determined, so that the unified access effect of the data of the multi-source heterogeneous equipment can be enhanced.

An access method, a communication apparatus and a module device are provided. The method includes: receiving configuration information from a network device, wherein the configuration information indicates one or more first physical random access channel (PRACH) resources configured to indicate a physical uplink shared channel (PUSCH) repetition, and one or more second PRACH resources configured to indicate a non-PUSCH repetition; transmitting a random access request message to the network device through the first PRACH resource in the case of the PUSCH repetition; and transmitting the random access request message to the network device through the second PRACH resource in the case of the non-PUSCH repetition.