Abstract: A method, system and computer program product for providing a guest with access to a virtual storage on a physical storage using a peripheral component interface hub. In one embodiment, the method comprises the guest sending to the peripheral component interface hub a request to access the physical storage, the request including physical addresses of the physical storage, and the peripheral component interface hub sending specified information about the request to a hypervisor. This method further comprises the hypervisor determining whether to grant or to reject the request; and when the hypervisor grants the request, the hypervisor sending a configuration command to the peripheral component interface hub. This command includes a mapping of addresses from the physical storage to addresses from the virtual storage. In an embodiment, the peripheral component interface hub uses this mapping to replace the addresses in the request with translated virtual addresses.

Abstract: There is a computer program product and computer system that includes program instructions programmed to identify, in a software-defined environment, a security container describing a workload and a set of resources required by the workload, the security container including self-describing sub-containers having associated metadata describing content of a respectively corresponding sub-container; determine, for the workload, a set of resource-divisible portions of the workload including a compute-resource portion; generate a plurality of sub-containers within the security container, a sub-container within the plurality of sub-containers being a self-describing sub-container having associated metadata describing the content of the sub-container representing only one resource-divisible portion, the sub-container being an operating system sub-container; and responsive to identifying a security event while processing the workload, adjust a security mechanism associated with the security container.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: A computer-implemented method is provided for supporting virtual machine and/or container live migration. The method may include hosting a virtual machine (VM) at a first location to be migrated to a second location by sending VM data packets from the first location to the second location and detecting a predetermined event associated with the VM at the first location. The method may further include prompting, in response to detection of the predetermined event, the redirection of the VM data packets from the first location to a buffer associated with the second location and storing the VM data packets in the buffer. The method may further include detecting an end of the predetermined event associated with the first location, and redirecting, in response to the end of the predetermined event, the VM data packets stored in the buffer to the VM migrated to the second location.

Abstract: Techniques for power savings in communications equipment are provided. The computer-implemented method can comprise identifying, by an electronic device operatively coupled to a processing unit, one or more connectivity requirements of one or more servers associated with a data center. The computer-implemented method can also comprise determining, by the electronic device, a defined graph that satisfies the one or more connectivity requirements. The computer-implemented method can further comprise powering down, by the electronic device, one or more elements of the data center that are not required by the defined graph; and powering up, by the device one or more nodes of the data center, which are in any state other than power up, that are required by the defined graph.

Abstract: A method for detecting Quality of Service degradation in a network flow includes collecting time series data representing statistical information pertaining to a network flow registered with a network flow monitoring service. The time series data is collected from at least two network elements on a path of the network flow configured to report the time series data. The method further includes indicating Quality of Service degradation in the network flow based on a similarity of the time series data to expected time series data being below a specified similarity threshold, and triggering at least one action to address the similarity being below the specified similarity threshold.

Abstract: A method for reducing reactivation time of services that includes examining page faults that occur during processing of a service after the service has been inactive to provide a plurality of prefetch groups, and formulating a prefetch decision tree from page fault data in the prefetch groups. Pages from an initial page table for the service following a reactivated service request are then compared with the prefetched pages in the resident memory in accordance with the prefetch decision tree. Pages in the page table that are not included in said prefetched pages are paged in. A process to provide to provide the service is executed using the page table. Executing the process substantially avoids page faults.

Abstract: Power consumption in a microprocessor platform is managed by setting a peak power level for power consumed by a multi-core microprocessor platform executing multi-threaded applications. The multi-core microprocessor platform contains a plurality of physical cores, and each physical core is configurable into a plurality of logical cores. A simultaneous multithreading level in at least one physical core is adjusted by changing the number of logical cores on that physical core in response to a power consumption level of the multi-core microprocessor platform exceeding the peak power level. Performance and power data based on simultaneous multi-threading levels are used in selecting the physical core to be adjusted.

Abstract: A method and system are provided. The system includes a network configurator for configuring a network as a backplane of the system to optimize throughput rate and minimize latency across a plurality of subsystems that are cloud-based and that form the system. The system further includes a composable system building block configurator for refactoring the plurality of subsystems to use the network to communicate as a single system. The system also includes a system resource multidimensional model generator for generating a multidimensional optimization model that models the composable system building blocks as resources having adjustable parameters in a multidimensional parameter space.

Abstract: Methods and a system are provided for detecting a Quality of Service degradation in a network flow. A method includes configuring, by a monitoring element, at least two network elements on a path of a network flow to report statistical information pertaining to the network flow as time series data. The method further includes collecting, by the monitoring element, the time series data from the network elements. The method also includes computing, by the monitoring element, a similarity of the time series data. The method additionally includes indicating, by the monitoring element, the Quality of Service degradation when the similarity is below a specified similarity threshold.

Abstract: Outcome-based adjustment of a software-defined environment (SDE) includes determining a business operation and a corresponding set of tasks to be performed in a software defined environment (SDE), establishing a first resource configuration to perform the corresponding set of tasks to achieve a business outcome target, determining a first resource cost for performing the corresponding set of tasks, assigning a priority level to tasks within the corresponding set of tasks, determining a set of performance indicators corresponding to a task having a first priority level, monitoring the SDE to identify a triggering event, responsive to identifying the triggering event, establishing a second resource configuration based, at least in part, on a performance level of a performance indicator in the set of performance indicators, the second resource configuration addressing the triggering event, and determining a second resource cost for performing the corresponding set of tasks according to the second resource config

Abstract: A method for reducing reactivation time of services that includes examining page faults that occur during processing of a service after the service has been inactive to provide a plurality of prefetch groups, and formulating a prefetch decision tree from page fault data in the prefetch groups. Pages from an initial page table for the service following a reactivated service request are then compared with the prefetched pages in the resident memory in accordance with the prefetch decision tree. Pages in the page table that are not included in said prefetched pages are paged in. A process to provide to provide the service is executed using the page table. Executing the process substantially avoids page faults.

Abstract: A method and device for provisioning bare-metal servers to tenants of a cloud provider is provided. The cloud provider operating a datacenter receives a profile of a tenant. The cloud provider identifies a set of physical resources subscribed by the tenant based on the tenant's profile and identifies a bare-metal server in the datacenter having sufficient physical resources to provide the subscribed physical resources. The cloud center reports to the tenant a set of physical resources in the BM server that corresponds to the subscribed set of physical resources. The cloud center receives a request from the tenant to provision a tenant bare metal machine in the datacenter. The cloud center enables at least one of the reported physical resources in the bare-metal server for the tenant, based on the request, and disables remaining reported physical resources in the bare-metal.

Abstract: Method and apparatus for performing in-place compression is provided. The in-place compression system transfers source data from a partition of a memory to a data buffer based on a read address. Compressed data is created by referencing the source data stored in the data buffer. The system writes the compressed data to the memory partition based on a write address. When the write address points at an address location that stores source data that has not been transferred to the data buffer, the system overwrites the compressed data stored in the memory partition with the source data stored in the data buffer.

Abstract: A system architecture, a method, and a computer program product are disclosed for attaching remote physical devices. In one embodiment, the system architecture comprises a compute server and a device server. The compute server includes a system memory, and one or more remote device drivers; and the device server includes a system memory and one or more physical devices, and each of the physical devices includes an associated device memory. The compute server and the device server are connected through an existing network fabric that provides remote direct memory access (RDMA) services. A system mapping function logically connects one or more of the physical devices on the device server to the compute server, including mapping between the system memories and the device memories and keeping the system memories and the device memories in synchronization using the RDMA.

Abstract: A parallel execution method, system, and non-transitory computer readable medium not maintaining a cache coherence, include creating a continuum, the continuum being a construct that holds data structures, giving a view to the continuum, the view being a descriptor that provides access rights and properties for the continuum, and performing a task associated with an execution sequence, the task holding the view to the continuum that the execution sequence is accessing.

Abstract: A parallel execution method, system, and non-transitory computer readable medium, include creating a continuum where the continuum includes a construct that holds data structures and where the continuum enables redirection of memory allocation and deallocation within a marked code section of a virtual address range.

Abstract: A method and device for provisioning bare-metal servers to tenants of a cloud provider is provided. The cloud provider operating a datacenter receives a profile of a tenant. The cloud provider identifies a set of physical resources subscribed by the tenant based on the tenant's profile and identifies a bare-metal server in the datacenter having sufficient physical resources to provide the subscribed physical resources. The cloud center reports to the tenant a set of physical resources in the BM server that corresponds to the subscribed set of physical resources. The cloud center receives a request from the tenant to provision a tenant bare metal machine in the datacenter. The cloud center enables at least one of the reported physical resources in the bare-metal server for the tenant, based on the request, and disables remaining reported physical resources in the bare-metal.

Abstract: A method, system and computer program product for providing a guest with access to a virtual storage on a physical storage using a peripheral component interface hub. In one embodiment, the method comprises the guest sending to the peripheral component interface hub a request to access the physical storage, the request including physical addresses of the physical storage, and the peripheral component interface hub sending specified information about the request to a hypervisor. This method further comprises the hypervisor determining whether to grant or to reject the request; and when the hypervisor grants the request, the hypervisor sending a configuration command to the peripheral component interface hub. This command includes a mapping of addresses from the physical storage to addresses from the virtual storage. In an embodiment, the peripheral component interface hub uses this mapping to replace the addresses in the request with translated virtual addresses.

Abstract: Provided are a computer program product, system, and method for providing access to data storage services in a network environment. Multi-tenancy information for each of a plurality of clients has at least one tenant assigned to the client, at least one data source assigned to the tenant assigned to the client, and for each of the at least one data source, information on at least one user assigned to the data source and permitted access to the data source. A user is provided an isolate tag comprising a client tag identifying one client, a tenant tag identifying one tenant, and a data source tag identifying one data source to which the user is permitted to access data. A user access request with an isolate tag is processed in response to determining that the multi-tenancy information indicates that the client, tenant, and data source identified by the isolate tag are related.