Developer Guide and Reference

Contents

ipo-jobs, Qipo-jobs

Specifies the number of commands (jobs) to be executed simultaneously during the link phase of Interprocedural Optimization (IPO).

Syntax

Linux and macOS:
-ipo-jobs
n
Windows:
/Qipo-jobs:
n
Arguments
n
Is the number of commands (jobs) to run simultaneously. The number must be greater than or equal to 1.
Default
-ipo-jobs1
or
/Qipo-jobs:1
One command (job) is executed in an interprocedural optimization parallel build.
Description
This option specifies the number of commands (jobs) to be executed simultaneously during the link phase of Interprocedural Optimization (IPO). It should only be used if the link-time compilation is generating more than one object. In this case, each object is generated by a separate compilation, which can be done in parallel.
This option can be affected by the following compiler options:
  • [Q]ipo
    when applications are large enough that the compiler decides to generate multiple object files.
  • [Q]ipo
    n
    when
    n
    is greater than 1.
  • [Q]ipo-separate
Be careful when using this option. On a multi-processor system with lots of memory, it can speed application build time. However, if
n
is greater than the number of processors, or if there is not enough memory to avoid thrashing, this option can increase application build time.
Alternate Options
None

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804