User and Reference Guide

Contents

Detailed Attributes of Collective Operation Events

Each possibly merged collective operation has a header entry which describes the collective operation as a whole. Use the plus button to get a detailed list of the same information per Process/Group. The exact processes or process groups shown depend on the current process aggregation.
This dialog box contains the following entries:
Entry:
Description:
Name/Process
On the per-operation row this column lists the name of the selected operation (
Mixed
if different operation types were merged). On per-process rows it shows the name of the Process/Group.
Duration
Last Time minus First Time
First Time
First time, one of the merged operations was entered.
Last Time
Last time, one of the merged operations was left.
Volume Sent
Number of bytes sent. It is the sum of all bytes sent on all merged operations for the per-process rows. The per-operation row sums up all per-process rows.
Volume Received
Number of bytes received. It is the sum of all bytes received on all merged operations for the per-process rows. The per-operation row sums up all per-process rows.
Count
Number of collective operations that are merged into the selection.
Root
The root process.
Communicator Name
The name of the MPI communicator on which the collective operation(s) was (were) executed.
Communicator ID
The plain ID of the MPI communicator on which the collective operation(s) was (were) executed.

Product and Performance Information

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