Abstract: A method for determining a regulation range of pumping power of a three-machine pumped storage unit is provided. The method includes: obtaining a first parameter set of pumping measurement parameters for characterizing the three-machine pumped storage unit and determining a pumping process efficiency; determining a first relational expression based on the pumping process efficiency and a design efficiency of a pumped storage power station and establishing a second relational expression; and determining a third relational expression based on power absorbed by a power grid and the second relational expression and determining a fourth relational expression, where the fourth relational expression reflects the regulation range of the pumping power of the three-machine pumped storage unit. The method for determining the regulation range of the pumping power of the three-machine pumped storage unit is proposed according to unit characteristics and operating economy of the power station.

Abstract: The present application relates to the technical field of road infrastructure, and provides a cement-based pervious pavement structure, a manufacturing method of the cement-based pervious pavement structure, and an application of the cement-based pervious pavement structure. The cement-based pervious pavement structure includes: a lower structural layer as the base; an upper surfacing layer overlaid on said lower structural layer and including: 1.0-2.0 parts by weight of upper layer (fine) aggregate; 0.40-0.70 part by weight of cement; 0.02-0.03 part by weight of titanium dioxide; 0.03-0.04 part by weight of water reducing agent; 0.001-0.002 part by weight of defoamer. The cement-based pervious pavement structure provided by the present application can provide air purification function taking into account the practical cost.

Abstract: Detecting analytes using proximity-induced tagmentation, strand invasion, restriction, or ligation is provided herein. In some examples, detecting an analyte includes coupling a donor recognition probe to a first portion of the analyte. The donor recognition probe includes a first recognition element specific to the first portion of the analyte, a first oligonucleotide corresponding to the first portion, and a transposase coupled to the first recognition element and the first oligonucleotide. An acceptor recognition probe is coupled to a second portion of the analyte. The acceptor recognition probe includes a second recognition element specific to the second portion of the analyte and a second oligonucleotide coupled to the second recognition element and corresponding to the second portion. The transposase is used to generate a reporter polynucleotide including the first and second oligonucleotides. The analyte is detected based on the reporter including comprising the first and second oligonucleotides.

Abstract: An aluminum borate whisker reinforced and toughened non-metallic matrix composite is provided, which specifically includes a non-metallic material reinforced and toughened with aluminum borate whiskers. The composite exhibits a higher bending strength and fracture toughness and a higher wear resistance. A method for preparing the composite is also provided. The method includes mixing the aluminum borate whiskers and the non-metallic material to form a mixture; and sintering the mixture by a vacuum hot press method, or molding the mixture.

Abstract: A memory tier is established in a cluster system having a deduplicated file system. The memory tier includes memory pages configured as huge pages, where writes to the huge pages are exported in a device file that is outside of a user process namespace within which processes of the deduplicated file system run. At least a portion of metadata generated by the deduplicated file system is written to the memory tier. The portion of metadata includes an index of fingerprints corresponding to data segments stored by the deduplicated file system to a storage pool. A determination is made that an instance of the deduplicated file system has failed. A new instance of the deduplicated file system is started to recover file system services by loading the index of fingerprints from the device file.

Abstract: A deduplication pipeline method to enable shorter overall latency, servicing of multiple calls in parallel, and implementing higher data compression ratio. The method includes receiving user data for storage, performing deduplication operation on the data to obtain non-duplicative data, buffering the non-duplicative data in persistent memory, and accepting next user data for deduplication processing. In parallel to receiving the next user data, operating a co-processor to asynchronously compressing the data stored in the persistent memory and storing the compressed data in RAID.

Abstract: System identifies multiple data blocks in workload stored in slow access persistent storage, data blocks copied to fast access persistent storage, and, after speed of accessing workload satisfies threshold, copied data blocks that remained in fast access persistent storage. System annotates some remaining data blocks with cache label and derives features for some data blocks in workload, based on corresponding bits set and/or time stamp. System uses cache labels and features for some data blocks in workload to train machine-learning model to predict which data blocks in workload will remain in fast access persistent storage after workload access satisfies threshold. System derives features for data block requested from production workload.

Abstract: A volatile storage component operatively connected to a node, that includes a volatile storage device, a power source, and a plurality of processor cores, where, a first processor core of the plurality of processor cores is executing a volatile storage firmware, and a second processor core of the plurality of processor cores is executing a volatile storage operating system.

Abstract: In a symmetric hardware accelerator system, an initial hardware accelerator is selected for an upgrade of firmware. The initial and other hardware accelerators handle workloads that have been balanced across the hardware accelerators. Workloads are rebalanced by directing workloads having low CPU utilization to the initial hardware accelerator. A CPU fallback is conducted of the workloads of the initial hardware accelerator to the CPU. While the CPU is handling the workloads, firmware of the initial hardware accelerator is upgraded.

Abstract: A method for backing up data, that includes making a detection, by a volatile storage firmware, that data communication to a volatile storage component is degraded, initiating a direct memory access (DMA) engine to copy the data from the volatile storage component to a non-volatile storage device, and in response to initiating copying of the data, initiating a shutdown of the volatile storage component.

Abstract: One example method includes receiving an IO request that specifies an operation to be performed concerning a data block, determining if a policy exists for a device that made the IO request, when a policy is determined to exist for the device, comparing the IO request to the policy, recording the IO request, and passing the IO request to a disk driver regardless of whether the IO request is determined to violate the policy or not.

Abstract: A method for processing requests, that includes receiving, by a volatile storage component, a request from a user space application, writing the request into a shared memory partition, generating instructions associated with the request, and processing the instructions, where the request is a data request and where generating the instructions associated with the request includes detecting, by the volatile storage component, the data request in the shared memory partition, where the data request is written in a data queue.

Abstract: A method, apparatus, and system for assigning the execution of a cryptography and/or compression operation on a data segment to either a central processing unit (CPU) or a hardware accelerator is disclosed. In particular, a data segment on which a cryptography and/or compression operation is to be executed is received. Status information relating to a CPU and a hardware accelerator is determined. Whether the operation is to be executed on the CPU or on the hardware accelerator is determined based at least in part on the status information. In response to determining that the operation is to be executed on the CPU, the data segment is forwarded to the CPU for execution of the operation. On the other hand, in response to determining that the operation is to be executed on the hardware accelerator, the data segment is forwarded to the hardware accelerator for execution of the operation.

Abstract: In a symmetric hardware accelerator system, an initial hardware accelerator is selected for an upgrade of firmware. The initial and other hardware accelerators handle workloads that have been balanced across the hardware accelerators. Workloads are rebalanced by directing workloads having low CPU utilization to the initial hardware accelerator. A CPU fallback is conducted of the workloads of the initial hardware accelerator to the CPU. While the CPU is handling the workloads, firmware of the initial hardware accelerator is upgraded.

Abstract: A memory tier is established in a cluster system having a deduplicated file system. The memory tier includes memory pages configured as huge pages, where writes to the huge pages are exported in a device file that is outside of a user process namespace within which processes of the deduplicated file system run. At least a portion of metadata generated by the deduplicated file system is written to the memory tier. The portion of metadata includes an index of fingerprints corresponding to data segments stored by the deduplicated file system to a storage pool. A determination is made that an instance of the deduplicated file system has failed. A new instance of the deduplicated file system is started to recover file system services by loading the index of fingerprints from the device file.

Abstract: A memory tier including persistent memory (PMEM) devices is established in nodes of a cluster system having a deduplicated file system. At least a portion of metadata generated by the deduplicated file system is persisted to the memory tier. The portion of metadata includes an index of fingerprints corresponding to data segments stored by the deduplicated file system to a storage pool. A determination is made that an instance of the deduplicated file system has failed. A new instance of the deduplicated file system is started to recover file system services by loading the index of fingerprints from the memory tier.

Abstract: In an asymmetric hardware accelerator system, a hardware accelerator configured to handle workloads of a particular type that have a lowest CPU utilization as compared to workloads of other types being handled by other hardware accelerators configured to handle the other types of workloads is identified. A CPU fallback is conducted of workloads of the identified hardware accelerator to the CPU. While the CPU is handling the workloads, firmware of the identified hardware accelerator is upgraded.

Abstract: In an asymmetric hardware accelerator system, a hardware accelerator configured to handle workloads of a particular type that have a lowest CPU utilization as compared to workloads of other types being handled by other hardware accelerators configured to handle the other types of workloads is identified. A CPU fallback is conducted of workloads of the identified hardware accelerator to the CPU. While the CPU is handling the workloads, firmware of the identified hardware accelerator is upgraded.

Abstract: A method and system for backing up and restoring data includes: determining, at a server storage area network (SAN) node, an LUN required for protection within a server SAN node based on communication between a backup agent and a logic unit number (LUN) agent in the server SAN node; determining a target backup device based on communication between the backup agent and respective target agent of a plurality of backup devices, the plurality of backup devices being connected with the server SAN node; and transmitting a virtual disk control command to the target backup device in response to the backup or restoration being triggered, such that data in the LUN required for protection is backed up to the target backup device or restored from the target backup device via an activated virtual disk interface of the target backup device.

Abstract: A method, apparatus, and system for assigning the execution of a cryptography and/or compression operation on a data segment to either a central processing unit (CPU) or a hardware cryptography/compression accelerator is disclosed. In particular, a data segment on which a cryptography and/or compression operation is to be executed is received. Status information relating to a CPU and a hardware cryptography/compression accelerator is determined. Whether the operation is to be executed on the CPU or on the hardware accelerator is determined based at least in part on the status information. In response to determining that the operation is to be executed on the CPU, the data segment is forwarded to the CPU for execution of the operation. On the other hand, in response to determining that the operation is to be executed on the hardware accelerator, the data segment is forwarded to the hardware accelerator for execution of the operation.