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1. 发明申请

US20140317219A1 LOCAL DIRECT STORAGE CLASS MEMORY ACCESS 有权
标题翻译：本地直接存储类存储器访问
公开(公告)号：US20140317219A1
公开(公告)日：2014-10-23
申请号：US14030655
申请日：2013-09-18
申请人： International Business Machines Corporation
发明人： Blake G. Fitch , Michele M. Franceschini , Lars Schneidenbach , Bernard Metzler
IPC分类号： H04L29/08
CPC分类号： G06F12/0246 , G06F12/109 , G06F15/17331 , H04L67/1097
摘要： A queued, byte addressed system and method for accessing flash memory and other non-volatile storage class memory, and potentially other types of non-volatile memory (NVM) storage systems. In a host device, e.g., a standalone or networked computer, having attached NVM device storage integrated into a switching fabric wherein the NVM device appears as an industry standard OFED™ RDMA verbs provider. The verbs provider enables communicating with a ‘local storage peer’ using the existing OpenFabrics RDMA host functionality. User applications issue RDMA Read/Write directives to the ‘local peer (seen as a persistent storage) in NVM enabling NVM memory access at byte granularity. The queued, byte addressed system and method provides for Zero copy NVM access. The methods enables operations that establish application private Queue Pairs to provide asynchronous NVM memory access operations at byte level granularity.
摘要翻译：用于访问闪存和其他非易失性存储类存储器的排队字节寻址系统和方法，以及潜在的其他类型的非易失性存储器（NVM）存储系统。在主机设备（例如独立或联网的计算机）中，具有集成到交换结构中的NVM设备存储，其中NVM设备出现为工业标准OFED TM RDMA动词提供者。动词提供者可以使用现有的OpenFabrics RDMA主机功能与“本地存储对等体”进行通信。用户应用程序向NVM中的本地对等体（作为持久存储器）发出RDMA读/写指令，以字节粒度实现NVM内存访问。排队的字节寻址系统和方法提供零拷贝NVM访问。这些方法允许建立应用程序专用队列对的操作以字节级粒度提供异步NVM内存访问操作。

2. 发明授权

US09904627B2 Controller and method for migrating RDMA memory mappings of a virtual machine 有权
公开(公告)号：US09904627B2
公开(公告)日：2018-02-27
申请号：US14657015
申请日：2015-03-13
申请人： International Business Machines Corporation
发明人： Bernard Metzler , Jonas Pfefferle , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： G06F12/1081 , G06F12/1009 , G06F9/455 , H04L29/08 , G06F15/173 , H04L29/14
CPC分类号： G06F12/1009 , G06F9/45558 , G06F12/1081 , G06F15/17331 , G06F2009/45583 , G06F2009/45595 , G06F2212/1041 , G06F2212/657 , H04L67/1097 , H04L69/40
摘要： An RDMA-capable network interface controller provides an RDMA access to a physical memory using multiple mapping tables; the physical memory includes a plurality of physical memory regions, at least some of which are associated with a virtual memory region. A mapping unit is configured to map memory region identifiers, each of which is adapted to identify a virtual memory region and an associated physical memory region, to virtual memory regions and to the associated physical memory regions based on a mapping table selected from multiple mapping tables based on a network identifier. Each of the mapping tables is indexed using a plurality of memory region identifiers, each associated with a virtual memory region and a physical memory region. A processing unit is configured to receive an access request from a client for accessing one of the physical memory regions associated with a virtual memory region.

3. 发明申请

US20170039164A1 EXTENDING REMOTE DIRECT MEMORY ACCESS OPERATIONS FOR STORAGE CLASS MEMORY ACCESS 有权
标题翻译：扩展远程直接存储器访问存储类存储器访问的操作
公开(公告)号：US20170039164A1
公开(公告)日：2017-02-09
申请号：US14816202
申请日：2015-08-03
申请人： International Business Machines Corporation
发明人： Nikolas Ioannou , Bernard Metzler , Jonas A. Pfefferle , Patrick M. Stuedi , Animesh K. Trivedi
IPC分类号： G06F15/167
CPC分类号： G06F15/17331 , G06F13/00 , G06F13/28
摘要： Embodiments of the present invention provide systems and methods for extending the remote direct memory access (RDMA) operations for accessing data from storage class memory (SCM). The method includes receiving an RDMA request in a first semantic, to a memory in a second semantic. The RDMA request in the first semantic is encoded, by encoding a type of the RDMA request into a memory area identifier, which includes an 8-bit key used to define additional storage semantics for the RDMA operation.
摘要翻译：本发明的实施例提供用于扩展用于从存储类存储器（SCM）访问数据的远程直接存储器访问（RDMA）操作的系统和方法。该方法包括以第一语义接收RDMA请求到第二语义的存储器。通过将RDMA请求的类型编码到包括用于定义用于RDMA操作的附加存储语义的8位密钥的存储器区域标识符中来编码第一语义中的RDMA请求。

4. 发明申请

US20150113088A1 PERSISTENT CACHING FOR OPERATING A PERSISTENT CACHING SYSTEM 有权
标题翻译：用于操作一个缓存缓存系统的持续缓存
公开(公告)号：US20150113088A1
公开(公告)日：2015-04-23
申请号：US14514412
申请日：2014-10-15
申请人： International Business Machines Corporation
发明人： Bernard Metzler , Martin L. Schmatz , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： G06F15/173 , G06F12/08 , H04L29/08
CPC分类号： G06F12/0866 , G06F2212/224 , G06F2212/461 , G06F2212/463 , Y02D10/13
摘要： A persistent caching system is provided. The persistent caching system includes a storage system having a caching server for storing data, and a client for accessing the data through a network. The caching server is configured to store the data in a number of virtual memory blocks. The virtual memory blocks refer to an associated memory-mapped file in a file system of the caching server. The caching server is configured to export addresses of the virtual memory blocks to the client. The client is configured to access at least some of the virtual memory blocks through RDMA using the exported addresses. The caching server is configured to page virtual memory blocks being accessed by one or more clients through RDMA to and/or from the memory-mapped files associated with the accessed virtual memory blocks.
摘要翻译：提供了持久的缓存系统。永久缓存系统包括具有用于存储数据的缓存服务器的存储系统和用于通过网络访问数据的客户端。缓存服务器被配置为将数据存储在多个虚拟存储器块中。虚拟内存块是指缓存服务器的文件系统中的相关联的内存映射文件。缓存服务器配置为将虚拟内存块的地址导出到客户端。客户端被配置为使用导出的地址通过RDMA访问至少一些虚拟内存块。高速缓存服务器被配置为将由一个或多个客户端访问的虚拟存储器块通过RDMA寻址到和/或与所访问的虚拟存储器块相关联的存储器映射文件。

5. 发明授权

US10055381B2 Controller and method for migrating RDMA memory mappings of a virtual machine 有权
公开(公告)号：US10055381B2
公开(公告)日：2018-08-21
申请号：US14948306
申请日：2015-11-21
申请人： International Business Machines Corporation
发明人： Bernard Metzler , Jonas Pfefferle , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： G06F15/167 , H04L29/08
CPC分类号： G06F15/17331
摘要： An RDMA-capable network interface controller provides an RDMA access to a physical memory using multiple mapping tables; the physical memory includes a plurality of physical memory regions, at least some of which are associated with a virtual memory region. A mapping unit is configured to map memory region identifiers, each of which is adapted to identify a virtual memory region and an associated physical memory region, to virtual memory regions and to the associated physical memory regions based on a mapping table selected from multiple mapping tables based on a network identifier. Each of the mapping tables is indexed using a plurality of memory region identifiers, each associated with a virtual memory region and a physical memory region. A processing unit is configured to receive an access request from a client for accessing one of the physical memory regions associated with a virtual memory region.

6. 发明申请

US20140359145A1 REMOTE PROCEDURE CALL WITH CALL-BY-REFERENCE SEMANTICS USING REMOTE DIRECT MEMORY ACCESS 有权
标题翻译：使用远程直接存储器访问的远程程序通过CALL-BY-REFERENCE语句进行调用
公开(公告)号：US20140359145A1
公开(公告)日：2014-12-04
申请号：US13907360
申请日：2013-05-31
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Bernard Metzler , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： H04L29/06
CPC分类号： H04L65/1069 , G06F9/547
摘要： Embodiments relate to providing remote procedure calls (RPC) with call-by-reference semantics using remote direct memory access (RDMA). An aspect includes establishing a session between a client and a server. A client session heap memory and a server session heap memory are initialized with a RDMA provider. A parameter is then stored in the session heap memory. A handle for the parameter is passed to the server which permits access to the parameter responsive to an on-demand request from the server.
摘要翻译：实施例涉及使用远程直接存储器访问（RDMA）来提供具有逐个引用语义的远程过程调用（RPC）。一方面包括在客户端和服务器之间建立会话。使用RDMA提供程序初始化客户端会话堆内存和服务器会话堆内存。然后将参数存储在会话堆内存中。该参数的句柄被传递到服务器，该服务器允许响应于来自服务器的按需请求来访问该参数。

7. 发明授权

US09940240B2 Persistent caching for operating a persistent caching system 有权
公开(公告)号：US09940240B2
公开(公告)日：2018-04-10
申请号：US14514412
申请日：2014-10-15
申请人： International Business Machines Corporation
发明人： Bernard Metzler , Martin L. Schmatz , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： G06F15/167 , G06F12/0866
CPC分类号： G06F12/0866 , G06F2212/224 , G06F2212/461 , G06F2212/463 , Y02D10/13
摘要： A persistent caching system is provided. The persistent caching system includes a storage system having a caching server for storing data, and a client for accessing the data through a network. The caching server is configured to store the data in a number of virtual memory blocks. The virtual memory blocks refer to an associated memory-mapped file in a file system of the caching server. The caching server is configured to export addresses of the virtual memory blocks to the client. The client is configured to access at least some of the virtual memory blocks through RDMA using the exported addresses. The caching server is configured to page virtual memory blocks being accessed by one or more clients through RDMA to and/or from the memory-mapped files associated with the accessed virtual memory blocks.

8. 发明申请

US20160267052A1 CONTROLLER AND METHOD FOR MIGRATING RDMA MEMORY MAPPINGS OF A VIRTUAL MACHINE 审中-公开
公开(公告)号：US20160267052A1
公开(公告)日：2016-09-15
申请号：US14948306
申请日：2015-11-21
申请人： International Business Machines Corporation
发明人： Bernard Metzler , Jonas Pfefferle , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： G06F15/167 , H04L29/08
CPC分类号： G06F15/17331
摘要： An RDMA-capable network interface controller provides an RDMA access to a physical memory using multiple mapping tables; the physical memory includes a plurality of physical memory regions, at least some of which are associated with a virtual memory region. A mapping unit is configured to map memory region identifiers, each of which is adapted to identify a virtual memory region and an associated physical memory region, to virtual memory regions and to the associated physical memory regions based on a mapping table selected from multiple mapping tables based on a network identifier. Each of the mapping tables is indexed using a plurality of memory region identifiers, each associated with a virtual memory region and a physical memory region. A processing unit is configured to receive an access request from a client for accessing one of the physical memory regions associated with a virtual memory region.

9. 发明授权

US09338193B2 Remote procedure call with call-by-reference semantics using remote direct memory access 有权
标题翻译：通过使用远程直接内存访问的逐个引用语义进行远程过程调用
公开(公告)号：US09338193B2
公开(公告)日：2016-05-10
申请号：US13907360
申请日：2013-05-31
申请人： International Business Machines Corporation
发明人： Bernard Metzler , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： G06F15/16 , H04L29/06 , G06F9/54
CPC分类号： H04L65/1069 , G06F9/547
摘要： Embodiments relate to providing remote procedure calls (RPC) with call-by-reference semantics using remote direct memory access (RDMA). An aspect includes establishing a session between a client and a server. A client session heap memory and a server session heap memory are initialized with a RDMA provider. A parameter is then stored in the session heap memory. A handle for the parameter is passed to the server which permits access to the parameter responsive to an on-demand request from the server.
摘要翻译：实施例涉及使用远程直接存储器访问（RDMA）来提供具有逐个引用语义的远程过程调用（RPC）。一方面包括在客户端和服务器之间建立会话。使用RDMA提供程序初始化客户端会话堆内存和服务器会话堆内存。然后将参数存储在会话堆内存中。该参数的句柄被传递到服务器，该服务器允许响应于来自服务器的按需请求来访问该参数。

10. 发明授权

US09332038B2 Remote procedure call with call-by-reference semantics using remote direct memory access 有权
公开(公告)号：US09332038B2
公开(公告)日：2016-05-03
申请号：US14022464
申请日：2013-09-10
申请人： International Business Machines Corporation
发明人： Bernard Metzler , Patrick Stuedi , Animesh K. Trivedi
IPC分类号： G06F15/16 , H04L29/06 , G06F9/54
CPC分类号： H04L65/1069 , G06F9/547
摘要： Embodiments relate to providing remote procedure calls (RPC) with call-by-reference semantics using remote direct memory access (RDMA). An aspect includes establishing a session between a client and a server. A client session heap memory and a server session heap memory are initialized with a RDMA provider. A parameter is then stored in the session heap memory. A handle for the parameter is passed to the server which permits access to the parameter responsive to an on-demand request from the server.

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