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