Fujitsu Siemens Computers SPEC CPU2006 Flag Description

Compilers: Intel Compilers for C++ and Fortran, Version 9.1 for IA32/EM64T-based applications in Linux_x64
Operating system: 64-bit SUSE Linux 10 Enterprise Edition
Last updated: 07-Mar-2007 PS

The text for many of the descriptions below was taken from the documentation of the Intel Compilers. This documentation is copyright © 2006 Intel Corporation. All Rights Reserved.
The original documentation is distributed with the Intel compilers.


Sections

Selecting one of the following will take you directly to that section:


Optimization Flags

HEADER for OPTIMIZATION


Portability Flags

HEADER for PORTABILITY


Compiler Flags

HEADER for COMPILER


System and Other Tuning Information

Platform settings

One or more of the following settings may have been set. If so, the "General Notes" section of the report will say so; and you can read below to find out more about what these settings mean.

Hardware Prefetch (Default = Enabled):

This BIOS option allows the enabling/disabling of a processor mechanism to prefetch data into the cache according to a pattern-recognition algorithm.

In some cases, setting this option to Disabled may improve performance. Users should only disable this option after performing application benchmarking to verify improved performance in their environment.

Adjacent Sector Prefetch (Default = Enabled):

This BIOS option allows the enabling/disabling of a processor mechanism to fetch the adjacent cache line within an 128-byte sector that contains the data needed due to a cache line miss.

In some cases, setting this option to Disabled may improve performance. Users should only disable this option after performing application benchmarking to verify improved performance in their environment.

-I

Compiler option to set the path for include files.
Used in some peak benchmarks which were build using the Intel 32-bit compiler.

-L

Compiler option to set the path for library files.
Used in some peak benchmarks which were build using the Intel 32-bit compiler.

ulimit -s

Sets the stack size to n kbytes, or unlimited to allow the stack size to grow without limit.

submit= MYMASK=`printf '0x%x' \$((1<<\$SPECCOPYNUM))`; /usr/bin/taskset \$MYMASK $command

When running multiple copies of benchmarks, the SPEC config file feature submit is sometimes used to cause individual jobs to be bound to specific processors. This specific submit command is used for Linux. The description of the elements of the command are: