Intel® Inspector User Guide for Linux* OS

User Guide

  • 2021.2
  • 03/26/2021
  • Public Content
Contents

Troubleshooting Out-of-memory Conditions

Symptoms

  • Intel Inspector
     displays an out-of-memory message.
  • Intel Inspector
     stops application execution and collection (with or without reporting an out-of-memory message).
  • The
     memory used by the application approaches the process limit before application execution stops.

Details

Both the application and the
Intel Inspector
 run in the same address space.
This means the memory footprint of the application running with the
Intel Inspector
 is larger than the memory footprint of the application running without the
Intel Inspector
, because the
Intel Inspector
 itself consumes memory to detect errors in the application.
Intel Inspector
 exhibits the symptoms above if the total memory consumed by application and the
Intel Inspector
 is close to or exceeds the total process virtual space.

Possible Correction Strategies

Reduce the amount of work the
Intel Inspector
 must perform during inspection. For example:
  • Use a smaller data set.
  • Inspect the application multiple times and exclude a different set of modules each time.
  • Use
    OMP_NUM_THREADS
     to limit the number of threads when inspecting OpenMP* applications. In most cases,
    OMP_NUM_THREADS=2
     is sufficient.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.