Abstract: A cluster system may include a plurality of nodes each including a main memory, and a memory node including a pooled memory which is accessible by the plurality of nodes. The memory node may store, in the pooled memory, a pooled memory page table which indicates address translation information between a virtual address and a physical address of the pooled memory. The plurality of nodes may obtain a physical address of shared data stored in the pooled memory, from the pooled memory page table, and may access the shared data corresponding to the obtained physical address.

Abstract: Provided herein may be a distributed processing system and a method of operating the same. The distributed processing system may include a storage device, a plurality of computing nodes, and a shared memory device. The storage device may store a database including a plurality of tables. The plurality of computing nodes may generate a target map of the first table by applying a target function to a first table among the plurality of tables, and divide a second table among the plurality of tables into a plurality of partitions. The shared memory device may store the target map of the first table. The plurality of computing nodes may execute queries including a target operation using different partitions among the plurality of partitions of the second table and the target map.

Abstract: A computing device may search for a plurality of first physical addresses that are start physical addresses corresponding to a plurality of first virtual addresses from a page table based on a first start virtual address that is a start address of a virtual address space including the plurality of first virtual addresses corresponding to a plurality of first pages for a first storage device, and transmit a first access request for at least one first physical address of the plurality of first physical addresses to the first storage device using a first storage controller.

Abstract: A memory system may include a cache memory, a nonvolatile memory, a write back wait queue, and a controller. To evict an eviction cache entry including a target transaction ID from the memory cache to the nonvolatile memory, the controller performs write back operations on cache entries respectively corresponding to waiting entries at a head of the write back wait queue until a waiting entry including the target transaction ID arrives at the head of the write back wait queue, and then performs a write back operation on the eviction cache entry.

Abstract: A memory system may include a cache memory, a nonvolatile memory, a write back wait queue, and a controller. To evict an eviction cache entry including a target transaction ID from the memory cache to the nonvolatile memory, the controller performs write back operations on cache entries respectively corresponding to waiting entries at a head of the write back wait queue until a waiting entry including the target transaction ID arrives at the head of the write back wait queue, and then performs a write back operation on the eviction cache entry.

Abstract: Disclosed are a memory management system and a method thereof. Restricted spare cells are optimally distributed (or allocated) into a physical region and a virtual region in a system for repairing a fault of a memory, thereby increasing a yield of a memory chip.

Abstract: Disclosed are an analyzing system for managing an information storage table and a control method thereof. That is, each of the physical basic regions, which are units of hashing an information storage position, is divided into a plurality of physical sub regions having same size. Then, a combination of virtual basic regions which satisfy a predetermined target value is checked from all configurable combinations and a hash value related with the combination of the virtual basic regions which satisfies the checked target value is stored in a predetermined region of a memory. Therefore, even though an information storage space required for every unit region is overloaded, when there is an extra information storage space in another region, the information storage space having an extra space is used to maximize efficiency of the information storage space.

Abstract: Disclosed are a memory apparatus having a plurality of information storage tables managed by separate virtual regions and a control method thereof. That is, a fault repair is applied in a memory system having a plurality of information storage tables managed by a separate virtual region, so that the entire information storage space is uniformly used for every region to improve a performance of the entire system and maximize efficiency of the information storage space by utilizing the information storage space.

Abstract: Provided are a memory apparatus for applying fault repair based on a physical region and a virtual region and a control method thereof. That is, the fault repair is applied based on the physical region and the virtual region which use an information storage table of a virtual basic region using a hash function, thereby improving efficiency of the fault repair.

Abstract: Disclosed are a virtual memory management apparatus for avoiding error cells in a main memory and a method thereof. That is, according to the present invention, it is possible to prevent a data loss or malfunction from occurring by allocating and releasing a stack frame in a way a block including the error cells to be located between the stack frames in case of a stack region, processing the block including the error cells to be in an allocated state in a heap region memory management data structure in case of a heap region, allocating the pages including error cells to programs not used frequently via profile in case of code memory, and allocating physical memory page including the error cells to unused space of last page in case of file-mapped memory.

Abstract: Disclosed are a memory apparatus having a plurality of information storage tables managed by separate virtual regions and a control method thereof. That is, a fault repair is applied in a memory system having a plurality of information storage tables managed by a separate virtual region, so that the entire information storage space is uniformly used for every region to improve a performance of the entire system and maximize efficiency of the information storage space by utilizing the information storage space.

Abstract: Disclosed are a memory management system and a method thereof. Restricted spare cells are optimally distributed (or allocated) into a physical region and a virtual region in a system for repairing a fault of a memory, thereby increasing a yield of a memory chip.

Abstract: Provided are a memory apparatus for applying fault repair based on a physical region and a virtual region and a control method thereof. That is, the fault repair is applied based on the physical region and the virtual region which use an information storage table of a virtual basic region using a hash function, thereby improving efficiency of the fault repair.

Abstract: Disclosed are an analyzing system for managing an information storage table and a control method thereof. That is, each of the physical basic regions, which are units of hashing an information storage position, is divided into a plurality of physical sub regions having same size. Then, a combination of virtual basic regions which satisfy a predetermined target value is checked from all configurable combinations and a hash value related with the combination of the virtual basic regions which satisfies the checked target value is stored in a predetermined region of a memory. Therefore, even though an information storage space required for every unit region is overloaded, when there is an extra information storage space in another region, the information storage space having an extra space is used to maximize efficiency of the information storage space.