Abstract: Techniques for address translation cache (ATC) reservation in offload devices are disclosed. In the illustrative embodiment, a processor of a compute device sends a start ATC reservation descriptor to an offload device. The start ATC reservation descriptor includes an identifier associated with a virtual machine for which at least part of an address translation cache of the offload device should be reserved. The offload device establishes a zone in the ATC of the offload device that is reserved for address translations associated with the identifier. Such cache reservation may be used when, e.g., a priority of a task is high or there is a need for critical or important workload to have lower latency and higher throughput.

Abstract: Scalable I/O Virtualization (Scalable IOV) allows efficient and scalable sharing of Input/Output (I/O) devices across a large number of containers or Virtual Machines. Scalable IOV defines the granularity of sharing of a device as an Assignable Device Interface (ADI). In response to a request for a virtual device composition, an ADI is selected based on affinity to the same NUMA node as the running virtual machine, utilization metrics for the Input-Output Memory Management Unit (IOMMU) unit and utilization metrics of a device of a same device class. Selecting the ADI based on locality and utilization metrics reduces latency and increases throughput for a virtual machine running critical or real-time workloads.

Abstract: Systems, methods, and devices for software-driven resource reservation of an input/output memory management unit (IOMMU) are provided. A system may include a peripheral device and a processing device. The peripheral device may be accessible to a virtual machine running on the processing device via direct memory access (DMA) that is translated by an IOMMU). The processing device may run the virtual machine and a virtual machine manager. The processing device also includes the IOMMU, which is configurable to reserve a subset of resources of the IOMMU to the virtual machine based on a descriptor provided by the virtual machine manager.

Abstract: According to one embodiment, a method for managing one or more virtual machines includes generating a request for at least one performance characteristic for at least one virtual machine, the at least one virtual machine being associated with a processing group, the processing group including one or more processing modules; receiving a response to the generated request for at least one performance characteristic for the at least one virtual machine; automatically determining whether an increase in the number of processing modules included in the processing group is required, by analyzing the received response to the generated request; and, in response to a determination that an increase in the number of processing modules included in the processing group is required, automatically adding at least one processing module to the processing group.

Abstract: According to one embodiment, a method for managing one or more virtual machines includes generating a request for at least one performance characteristic for at least one virtual machine, the at least one virtual machine being associated with a processing group, the processing group including one or more processing modules; receiving a response to the generated request for at least one performance characteristic for the at least one virtual machine; automatically determining whether an increase in the number of processing modules included in the processing group is required, by analyzing the received response to the generated request; and, in response to a determination that an increase in the number of processing modules included in the processing group is required, automatically adding at least one processing module to the processing group.

Abstract: According to one embodiment, a method for managing one or more virtual machines includes generating a request for at least one performance characteristic for at least one virtual machine, the at least one virtual machine being associated with a processing group, the processing group including one or more processing modules; receiving a response to the generated request for at least one performance characteristic for the at least one virtual machine; automatically determining whether an increase in the number of processing modules included in the processing group is required, by analyzing the received response to the generated request; and, in response to a determination that an increase in the number of processing modules included in the processing group is required, automatically adding at least one processing module to the processing group.