HP OpenVMS v7.3 galaxy and NUMA programming and internals

Prerequisites

To get the most from this course, students should have:

• Completed the Alpha Programming Features I and II courses.
• The ability to read and ideally write code in VAX macro.
• Ability to program in the DEC C Language.
• Completed HP OpenVMS Alpha Internals I and II courses.

Audience

HP OpenVMS system managers and application programmers

Ways to save

Benefits to you

The newest AlphaServer GS series systems support a Non-Uniform Memory Architecture (NUMA). NUMA presents new issues of which the programmer and troubleshooter must be cognizant. HP OpenVMS provides support for Resource Affinity Domains (RAD) that allow you to control some of the aspects of the NUMA environment.

Course outline

• The GMDB and CPU transitions
• Galaxy management database (GMDB)
• Locating node blocks
• Inter-processor interrupts
• Galaxy configuration tree
• System event notification
• CPU management programming interface
• Resource affinity domains
• Non-uniform memory access (NUMA)
• Resource affinity domains (RADs)
• Obtaining RAD information
• The RAD_SUPPORT SYSGEN parameter
• Home RADs
• Soft RAD affinity scheduling
• RAD support for process code and data
• Controlling global page allocation
• RAD distribution of system memory
• Galaxywide shared memory sections
• Galaxywide shared memory sections
• Support for galaxywide shared memory sections
• Locating SHM_REG and SHM_DESC arrays
• Shared memory and the PFN database
• Share page tables
• Galaxy locks
• HP OpenVMS galaxy locks
• Galaxy lock characteristics
• Galaxy lock system services
• Galaxy locking routines
• Galaxy lock structures
• Releasing galaxy lock waiters