HP-UX HB v13.00 Ch-21 - Itanium

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HP-UX Handbook – Rev 13.00 Page 30 (of 35)

Chapter 21 Itanium Architecture (IA)

October 29, 2013

utilization.

7) PA-RISC applications that make extensive use of OpenGL experience slow performance.

This is because the ogld daemon process on an Itanium-based machine is a native process,

and an emulated application cannot send its graphics output to a native graphics card by

directly communicating with the ogld daemon process. Such PA-RISC applications send

their graphics data to the Itanium-based machine's graphics card through a virtual memory

driver (VMD) which is emulated under Aries. This process of displaying the graphics data is

slow. Instead, such applications should make use of OpenGL display lists. This causes the

PA-RISC OpenGL library to use GLX protocol mode to the X server and the ogld process.

This process of displaying graphics data with OpenGL can be significantly faster than the

virtual memory driver route.

There are some Aries options available to optimize Aries for certain applications. Refer to the

aries man page.

If you intend to run PA binaries on IPF it is strongly recommended to apply the latest available

Aries patch:

UX 11.22: PHSS_30214 or newer

UX 11.23: PHSS_30015 or newer

Further information about Aries can be found on the websites mentioned in the Additional

information section.

IPF vs. PA-RISC Terminology

PA term

IPF term

PA-RISC

Itanium

Precision Architecture (PA)

Itanium Processor Family (IPF)

HP 9000

HP Integrity

Chassis Code

Event ID

Activity Log

Forward Progress Log (FPL)

Errorlog

System Event Log (SEL)

Boot Control Handler (BCH)

Extensible Firmware Interface (EFI)

Processor Dependant Code (PDC)

Processor Abstraction Layer (PAL)

IO Dependant Code (IODC)

System Abstraction Layer (SAL)

High Priority Machine Check (HPMC)

Machine Check Abort (MCA)

Transfer of Control (TOC)

Non-Maskable Interrupt (NMI) or INIT

LPMC (corrected by CPU)

e.g. Level 2 Cache Single Bit Error (SBE)

Correctable Machine Check (CMC)

LPMC (corrected by CEC)

Correctable Platform Error (CPE)