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HP NonStop Kernel principles


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Content starts here

At a glance

View schedule & enroll Sorted by: location or date
Course number U4179S
Length 4 days
Delivery method Virtual Instructor-Led Training (VILT)
Instructor-led training (ILT)
Onsite dedicated training (OST)
Price USD $2,400
CAD $2,640

Course overview

If you work with an HP NonStop server and want a solid understanding of the Guardian and Open System Services (OSS) environments and the HP NonStop Kernel operating system, this course is essential. In this course you will thoroughly examine major features of the HP NonStop Kernel. The topics covered in this course increase your awareness of the operations performed by the operating system and the Guardian and OSS environments, thus enhancing your ability to effectively utilize the system and perform troubleshooting activities. This course is a prerequisite for attending and understanding the HP NonStop Kernel Architecture course and is recommended for those with at least one year of experience on HP NonStop servers.


  • Concepts and facilities course
  • One year development or system management experience on HP NonStop systems


  • Programmers and software developers
  • System managers and support staff
  • Anyone who needs a broad overview of the HP NonStop Kernel

Ways to save

Benefits to you

  • Introduction to the HP NonStop K-series and S-series server architectures
  • HP NonStop Kernel overview
  • Processes
  • Processor environment
  • Process environment
  • Message system
  • File systems
  • Memory management
  • I/O subsystem

Next Steps

  • HP NonStop Kernel architecture U4178S
  • Guardian API programming U4152S

Course outline

  • Course introduction
    • Review course and class schedule
    • Nine attributes of the design
  • The basics
    • General definition of the HP NonStop Kernel
    • Definition of a process and virtual memory
    • Two views of a process and the process environment
    • Demands that forward compatibility places on the operating system
    • Principle differences between the RISC and CISC architectures as those differences pertain to the HP NonStop Kernel
  • The processing environments
    • Possible process execution environments
    • Process components associated with each environment
    • Lab exercise (2.5 hours)
    • Investigate the local system and the network
    • TNS and TNS/R process issues
  • The processor states
    • Five possible states of a processor
    • How the operating system handles interrupts
    • Basic function of principle structures and registers associated with interrupts
    • Rules for process execution
    • What happens when the processor is reloaded, the system is loaded, or a power fail occurs
  • Application programming interfaces (APIs)
    • The Guardian APIs and their function in relation to the HP NonStop Kernel
    • The OSS APIs and their function in relation to the HP NonStop Kernel
    • The transaction processing and HP NonStop SQL/MP APIs and their function in relation to the HP NonStop Kernel
    • Lab exercise (3 hours)
    • Observe a looping process
    • Explore the OSS file system
  • The message system
    • Link-listener (sender-receiver) model of process communication
    • How two processes communicate when both are in the same processor
    • How two processes communicate when each is in a different processor
    • How interprocess communication differs from the HP NonStop K-series to the HP NonStop S-series servers
  • Process control
    • The six common process states
    • The process scheduling algorithm
    • Process creation, scheduling, and termination for Guardian and OSS processes
    • Displaying and explaining user process wait states
    • Lab exercise (1.5 hours)
    • FIXUP, library, and process creation
  • Memory management
    • The HP NonStop server 16-bit and 32-bit addressing schemes
    • Basic organization of virtual storage and real storage on a HP NonStop server
    • Two mapping schemes used to translate from a location in virtual storage to real storage
    • Swapping: why it is needed and the primary components that implement it
  • I/O subsystem
    • How I/O is handled in the HP NonStop K-series server
    • How I/O is handled in the HP NonStop S-series server
    • Interactions involved in the open of an IOP by a process
    • Major hardware components that make up the I/O system
    • Software structures that make up the I/O system
    • Lab exercise (2 hours)
    • Observe stack operations
    • Use Peripheral Utilities Program (PUP) to understand the physical configuration (HP NonStop K-series servers)
    • Comprehensive course review (45 minutes)

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