User and Reference Guide

Contents

DEADLOCK-WARNING

Syntax
DEADLOCK-WARNING <delay>
Variable
VT_DEADLOCK_WARNING
Default
5 minutes
Description
If on average the MPI processes are stuck in their last MPI call for more than this threshold, then a
GLOBAL:DEADLOCK:NO_PROGRESS
warning is generated. This is a sign of a load imbalance or a deadlock which cannot be detected because at least one process polls for progress instead of blocking inside an MPI call.
As usual, the value may also be specified with units,
1m
for one minute, for example.

Product and Performance Information

1

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