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公开(公告)号：US12223186B2
公开(公告)日：2025-02-11
申请号：US18126232
申请日：2023-03-24
Inventor： Chang-Dae Kim , Kwang-Won Koh , Kang-Ho Kim , Tae-Hoon Kim , Sang-Ho Eom
IPC: G06F3/06
Abstract: Disclosed herein is a method for memory management in a memory disaggregation environment. The method includes generating virtual memory based on multiple first memory devices, determining whether a condition for allocation acceleration is satisfied by the first memory devices, and allocating a memory page to the first memory devices based on whether the condition for allocation acceleration is satisfied.
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公开(公告)号：US11586549B2
公开(公告)日：2023-02-21
申请号：US17324883
申请日：2021-05-19
Inventor： Kwang-Won Koh , Chang-Dae Kim , Kang-Ho Kim
IPC: G06F12/08 , G06F12/0882 , G06F12/0871 , G06F12/0862 , G06F12/0891 , G06F12/0868
Abstract: Disclosed herein is an apparatus for managing disaggregated memory, which is located in a virtual machine in a physical node. The apparatus is configured to select, depending on the proportion of valid pages, direct transfer between remote memory units or indirect transfer via local memory for each of the memory pages of the source remote memory to be migrated, among at least one remote memory unit used by the virtual machine, to transfer the memory pages of the source remote memory to target remote memory based on the direct transfer or the indirect transfer, and to release the source remote memory.
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公开(公告)号：US11500693B2
公开(公告)日：2022-11-15
申请号：US16836246
申请日：2020-03-31
Inventor： Kang-Ho Kim , Kwang-Won Koh , Hong-Yeon Kim , Baik-Song An , Sang-Min Lee
Abstract: Disclosed herein are a distributed system and a method for operating the distributed system. The method for operating a distributed system including a server and multiple clients includes acquiring, by a first client of the multiple clients, a lock on a shared resource using a first table of the server and a second table of the client, and releasing, by the first client, a lock on the shared resource using the first table and the second table, wherein the first table is a lock (DSLock) table for storing information about a distributed shared resource, and the second table is a data structure (DSLock_node) table for a lock request.
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公开(公告)号：US12153525B2
公开(公告)日：2024-11-26
申请号：US18126229
申请日：2023-03-24
Inventor： Tae-Hoon Kim , Kwang-Won Koh , Kang-Ho Kim , Chang-Dae Kim , Sang-Ho Eom
IPC: G06F12/0862 , G06F12/0864
Abstract: Disclosed herein are a method and apparatus for verifying integrity in a memory-disaggregated environment. The method for verifying integrity in a memory-disaggregated environment includes receiving write data and multiple hash values generated based on write data from a remote memory, and verifying integrity of the write data based on the write data and the hash values, wherein verifying the integrity of the write data comprises selecting a hash value for the integrity verification based on an access latency of the remote memory.
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公开(公告)号：US11947463B2
公开(公告)日：2024-04-02
申请号：US18158953
申请日：2023-01-24
Inventor： Kwang-Won Koh , Chang-Dae Kim , Kang-Ho Kim
IPC: G06F12/08 , G06F12/0862 , G06F12/0868 , G06F12/0871 , G06F12/0882 , G06F12/0891
CPC classification number: G06F12/0882 , G06F12/0862 , G06F12/0868 , G06F12/0871 , G06F12/0891
Abstract: Disclosed herein is an apparatus for managing disaggregated memory, which is located in a virtual machine in a physical node. The apparatus is configured to select, depending on the proportion of valid pages, direct transfer between remote memory units or indirect transfer via local memory for each of the memory pages of the source remote memory to be migrated, among at least one remote memory unit used by the virtual machine, to transfer the memory pages of the source remote memory to target remote memory based on the direct transfer or the indirect transfer, and to release the source remote memory.
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Patent Agency Ranking
公开(公告)号：US09804903B2
公开(公告)日：2017-10-31
申请号：US14616894
申请日：2015-02-09
Inventor： Kang-Ho Kim , Kwang-Won Koh , Seung-Hyub Jeon
IPC: G06F9/54
Abstract: Disclosed herein are a data processing apparatus for pipeline execution acceleration and a method thereof. According to an exemplary embodiment of the present invention, the data processing apparatus for pipeline execution acceleration includes: a processor configured to sequentially execute a first application program and a second application program reading or writing a specific file; and a file system configured to complete a write for a file data for the specific file to a data block previously allocated from the first application program and provide the file data for the specific file to the second application program prior to executing a close call for the specific file from the first application program, when executing a read call for the specific file from the second application program.
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公开(公告)号：US20130326514A1
公开(公告)日：2013-12-05
申请号：US13837496
申请日：2013-03-15
Inventor： Seung-Hyub Jeon , Kwang-Won Koh , Kang-Ho Kim , Chei-Yol Kim , Chang-Won Ahn
IPC: G06F9/455
CPC classification number: G06F9/45504 , G06F9/44521 , G06F9/4552
Abstract: Disclosed herein is a method and apparatus for supporting virtualization. In the method, conversion of source code of a loadable module is initiated. A virtualization-sensitive instruction is searched for during the conversion of the source code. If the virtualization-sensitive instruction has been found, a virtualization-sensitive instruction table is generated based on the found virtualization-sensitive instruction. The virtualization-sensitive instruction is substituted with an instruction recognizable in a privileged mode, based on the generated virtualization-sensitive instruction table. The loadable module is loaded and executed in a kernel. Accordingly, the present invention supports virtualization, thus minimizing overhead occurring in full virtualization, and guaranteeing the high performance provided by para-virtualization without modifying a source.
Abstract translation: 这里公开了一种用于支持虚拟化的方法和装置。 在该方法中，启动可加载模块的源代码的转换。 在源代码转换期间搜索虚拟化敏感指令。 如果已经找到了虚拟化敏感指令，则会根据发现的虚拟化敏感指令生成一个虚拟化敏感指令表。 基于生成的虚拟化敏感指令表，以特权模式可识别的指令代替虚拟化敏感指令。 可加载模块在内核中加载并执行。 因此，本发明支持虚拟化，从而最大限度地减少完全虚拟化中发生的开销，并且保证在不修改源的情况下通过半虚拟提供的高性能。
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公开(公告)号：US12118394B2
公开(公告)日：2024-10-15
申请号：US17517284
申请日：2021-11-02
Inventor： Changdae Kim , Kwang-Won Koh , Kang Ho Kim , Taehoon Kim
CPC classification number: G06F9/5016 , G06F9/45558 , G06F9/5077 , G06F2009/45562 , G06F2009/45583 , G06F2009/45595
Abstract: An apparatus for memory integrated management in a cluster system including a plurality of physical nodes connected to each other by a network determines one of the plurality of physical nodes as a node to place a new virtual machine, allocates the first type of memory allocated to the one physical node to the new virtual machine as much as the memory capacity required by the new virtual machine, and distributes the second type of memory to a plurality of virtual machines running on the plurality of physical nodes by integrating and managing the second type of memory allocated to each of the plurality of physical nodes. In this case, the access speed of the second type of memory is faster than that of the first type of memory.
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公开(公告)号：US12002548B2
公开(公告)日：2024-06-04
申请号：US17070452
申请日：2020-10-14
Inventor： Changdae Kim , Kwang-Won Koh , Kang Ho Kim
IPC: G16B30/10
CPC classification number: G16B30/10
Abstract: An apparatus for genome sequence alignment attempts a search for the hash tables to align a target nucleotide sequence, from a hash table having a large seed size to a hash table having a small seed size, and when there is at least one matched seed to the target nucleotide sequence on a hash table, aligns the target nucleotide sequence by using candidate positions from the hash table without further hash table searching.
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10.发明授权公开(公告)号：US11849005B2
公开(公告)日：2023-12-19
申请号：US18076051
申请日：2022-12-06
Inventor： Kwang-Won Koh , Kang-Ho Kim , Chang-Dae Kim , Tae-Hoon Kim , Sang-Ho Eom
IPC: H04L67/568 , G06F9/455 , H04L67/60
CPC classification number: H04L67/568 , G06F9/45558 , H04L67/60 , G06F2009/45595
Abstract: Disclosed herein are a method and apparatus for accelerating network transmission in a memory-disaggregated environment. The method for accelerating network transmission in a memory-disaggregated environment includes copying transmission data to a transmission buffer of the computing node, when a page fault occurs during copy of the transmission data, identifying a location at which the transmission data is stored, setting a node in which a largest amount of transmission data is stored as a transmission node, and sending a transmission command to the transmission node.
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