User Guide

  • 2022.2
  • 08/08/2022
  • Public Content
Contents

SYNC-MAX-DURATION

Syntax:

SYNC-MAX-DURATION
<duration>
 

Variable

VT_SYNC_MAX_DURATION

Default

1 minute

Description

Intel® Trace Analyzer and Collector can use either a barrier at the beginning and the end of the program run to take synchronized time stamps on processes or it can use a more advanced algorithm based on statistical analysis of message round-trip times.
This option enables this algorithm by setting the maximum number of seconds that Intel Trace Analyzer and Collector exchanges messages among processes. A value less than or equal to zero disables the statistical algorithm.
The default duration is much longer than actually needed, because usually the maximum number of messages (set through
SYNC-MAX-MESSAGES
)is reached first. This setting mostly acts as a safe-guard against excessive synchronization times, at the cost of potentially reducing the quality of clock synchronization when reaching it and then sending less messages.

Product and Performance Information

1

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