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doc: add hybrid_rt to "What is ACRN"
Add description of the new Hybrid RT (hybrid_rt) scenario to the "What is ACRN" documentation. Tracked-On: #5203 Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
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Geoffroy Van Cutsem
David Kinder
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doc/introduction/images/ACRN-Hybrid-RT.png
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@ -101,6 +101,65 @@ folder in the source code. XML examples for some platforms can also be found und
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The :ref:`acrn_configuration_tool` tutorial explains how to use the ACRN
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Configuration tool to create your own scenario or modify an existing one.
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Industrial Workload Consolidation
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=================================
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.. figure:: images/ACRN-V2-industrial-scenario.png
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:width: 600px
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:align: center
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:name: V2-industrial-scenario
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ACRN Industrial Workload Consolidation scenario
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Supporting Workload consolidation for industrial applications is even
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more challenging. The ACRN hypervisor needs to run different workloads with no
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interference, increase security functions that safeguard the system, run hard
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real-time sensitive workloads together with general computing workloads, and
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conduct data analytics for timely actions and predictive maintenance.
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Virtualization is especially important in industrial environments
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because of device and application longevity. Virtualization enables
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factories to modernize their control system hardware by using VMs to run
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older control systems and operating systems far beyond their intended
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retirement dates.
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As shown in :numref:`V2-industrial-scenario`, the Service VM can start a number
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of post-launched User VMs and can provide device sharing capabilities to these.
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In total, up to 7 post-launched User VMs can be started:
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- 5 regular User VMs,
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- One `Kata Containers <https://katacontainers.io>`_ User VM (see
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:ref:`run-kata-containers` for more details), and
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- One Real-Time VM (RTVM).
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In this example, one post-launched User VM provides Human Machine Interface
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(HMI) capability, another provides Artificial Intelligence (AI) capability, some
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compute function is run the Kata Container and the RTVM runs the soft
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Programmable Logic Controller (PLC) that requires hard real-time
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characteristics.
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:numref:`V2-industrial-scenario` shows ACRN's block diagram for an
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Industrial usage scenario:
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- ACRN boots from the SoC platform, and supports firmware such as the
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UEFI BIOS.
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- The ACRN hypervisor can create VMs that run different OSes:
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- a Service VM such as Ubuntu*,
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- a Human Machine Interface (HMI) application OS such as Windows*,
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- an Artificial Intelligence (AI) application on Linux*,
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- a Kata Container application, and
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- a real-time control OS such as Zephyr*, VxWorks* or RT-Linux*.
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- The Service VM, provides device sharing functionalities, such as
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disk and network mediation, to other virtual machines.
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It can also run an orchestration agent allowing User VM orchestration
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with tools such as Kubernetes*.
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- The HMI Application OS can be Windows* or Linux*. Windows is dominant
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in Industrial HMI environments.
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- ACRN can support a soft Real-time OS such as preempt-rt Linux for
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soft-PLC control, or a hard Real-time OS that offers less jitter.
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Automotive Application Scenarios
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================================
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@ -167,65 +226,6 @@ A block diagram of ACRN's SDC usage scenario is shown in
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- Multiple operating systems are supported by one SoC through efficient
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virtualization.
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Industrial Workload Consolidation
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=================================
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.. figure:: images/ACRN-V2-industrial-scenario.png
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:width: 600px
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:align: center
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:name: V2-industrial-scenario
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ACRN Industrial Workload Consolidation scenario
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Supporting Workload consolidation for industrial applications is even
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more challenging. The ACRN hypervisor needs to run different workloads with no
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interference, increase security functions that safeguard the system, run hard
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real-time sensitive workloads together with general computing workloads, and
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conduct data analytics for timely actions and predictive maintenance.
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Virtualization is especially important in industrial environments
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because of device and application longevity. Virtualization enables
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factories to modernize their control system hardware by using VMs to run
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older control systems and operating systems far beyond their intended
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retirement dates.
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As shown in :numref:`V2-industrial-scenario`, the Service VM can start a number
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of post-launched User VMs and can provide device sharing capabilities to these.
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In total, up to 7 post-launched User VMs can be started:
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- 5 regular User VMs,
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- One `Kata Containers <https://katacontainers.io>`_ User VM (see
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:ref:`run-kata-containers` for more details), and
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- One Real-Time VM (RTVM).
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In this example, one post-launched User VM provides Human Machine Interface
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(HMI) capability, another provides Artificial Intelligence (AI) capability, some
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compute function is run the Kata Container and the RTVM runs the soft
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Programmable Logic Controller (PLC) that requires hard real-time
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characteristics.
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:numref:`V2-industrial-scenario` shows ACRN's block diagram for an
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Industrial usage scenario:
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- ACRN boots from the SoC platform, and supports firmware such as the
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UEFI BIOS.
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- The ACRN hypervisor can create VMs that run different OSes:
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- a Service VM such as Ubuntu*,
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- a Human Machine Interface (HMI) application OS such as Windows*,
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- an Artificial Intelligence (AI) application on Linux*,
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- a Kata Container application, and
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- a real-time control OS such as Zephyr*, VxWorks* or RT-Linux*.
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- The Service VM, provides device sharing functionalities, such as
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disk and network mediation, to other virtual machines.
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It can also run an orchestration agent allowing User VM orchestration
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with tools such as Kubernetes*.
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- The HMI Application OS can be Windows* or Linux*. Windows is dominant
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in Industrial HMI environments.
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- ACRN can support a soft Real-time OS such as preempt-rt Linux for
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soft-PLC control, or a hard Real-time OS that offers less jitter.
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Best Known Configurations
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*************************
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@ -265,6 +265,13 @@ application scenario needs.
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- Post-launched VM
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-
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* - Hybrid Real-Time Usage Config
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- Hybrid RT
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- Pre-launched VM (Real-Time VM)
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- Service VM
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- Post-launched VM
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-
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* - Logical Partition
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- Logical Partition
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- Pre-launched VM (Safety VM)
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@ -319,6 +326,20 @@ non-real-time tasks.
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Hybrid scenario
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Hybrid Real-Time (RT) scenario
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==============================
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In this Hybrid Real-Time (RT) scenario, a pre-launched RTVM is started by the
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hypervisor. The Service VM runs a post-launched User VM that runs non-safety or
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non-real-time tasks.
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.. figure:: images/ACRN-Hybrid-RT.png
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:width: 600px
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:align: center
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:name: ACRN-Hybrid-RT
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Hybrid RT scenario
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Logical Partition scenario
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==========================
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