International Business Machines Corporation

Patrick M Stuedi

Bernard Metzler

Animesh Kumar Trivedi

Jonas Pfefferle

Nikolas Ioannou

Martin L Schmatz

John G Rooney

Task scheduling in a hybrid cloud that includes a private cloud and an external cloud is performed. First a job to be performed is identified. Then, the job identified is decomposed into a set of tasks, whereby a task schedule is obtained for tasks of the set of tasks to be executed across the hybrid cloud. Next, a task to be executed in the external cloud that requires private data from the private cloud for its execution is detected from the task schedule. Finally, one or more non-anonymized portions of the private data are anonymized before execution of the detected task in the external cloud, by executing an anonymizing function from the private cloud. De-anonymization functionality may similarly be involved.

Task scheduling on hybrid clouds using anonymization

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.

Controller and method for migrating RDMA memory mappings of a virtual machine

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.

Extending remote direct memory access operations for storage class memory access

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.

Persistent caching for operating a persistent caching system

Method and device for data transmissions using RDMA. The present invention is implemented between a first entity using a first data structure type and a second entity using a second data structure type over a third entity. The third entity is coupled to a table caching fingerprints of first data structures of the first data structure type and second data structures of the second data structure type associated therewith. A certain first data structure and the second data structure associated therewith represent a certain, identical RDMA function call. A first data structure representing a certain RDMA function call is sent from the first entity to the third entity; the fingerprint for the sent first data structure is determined; a second data structure associated with the determined fingerprint is looked up in the table; and the looked up second data structure is sent to the second entity.

Method and device for data transmissions using RDMA

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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Zurich, Switzerland

Patrick M Stuedi