SYNC-PERIOD

Syntax

SYNC-PERIOD <duration>

Variable

VT_SYNC_PERIOD

Default

-1 seconds = disabled

Description

If clock synchronization through message exchanges is enabled (the default), then Intel Trace Collector can be told to do message exchanges during the application run automatically. By default, this is disabled and needs to be enabled by setting this option to a positive time value.

The message exchange is done by a background thread and thus needs a means of communication, which can execute in parallel to the application's communication, therefore it is not supported by the normal MPI tracing library libVT.

For more complete information about compiler optimizations, see our Optimization Notice.
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