Intel® Trace Analyzer and Collector User and Reference Guide

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ID 767272
Date 3/31/2023
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Document Table of Contents
Document Table of Contents x
Intel® Trace Analyzer and Collector User and Reference Guide
Intel® Trace Analyzer and Collector User and Reference Guide x
Introduction Install and Set Up Intel® Trace Analyzer and Collector Trace Your Applications Analyze Your Applications Intel® Trace Collector Reference Intel® Trace Analyzer Reference Notices and Disclaimers
Introduction x
Notational Conventions Get Help
Trace Your Applications x
Tracing Conventional MPI Applications Tracing Failing MPI Applications Tracing OpenSHMEM* Applications Tracing MPI File IO Handling of Communicator Names Tracing MPI Load Imbalance Tracing User Defined Events Configuring the Collector Filtering Trace Data Recording OpenMP* Regions Information Tracing System Calls (Linux* OS) Collecting Lightweight Statistics Recording Source Location Information Recording Hardware Performance Information (Linux* OS) Recording Operating System Counters Tracing Library Calls Correctness Checking Tracing Distributed Non-MPI Applications
Correctness Checking x
Correctness Checking of MPI Applications Running with Valgrind* (Linux* OS) Configuring Error Checks Analyzing the Results Debugger Integration
Debugger Integration x
TotalView* Debugger GNU* Symbolic Debugger Allinea* Distributed Debugging Tool* (DDT*)
Analyze Your Applications x
Starting Intel® Trace Analyzer Intel Trace Analyzer Graphical User Interface Navigating Timelines Concepts Viewing Correctness Checking Reports Comparing Two Trace Files Interoperability with Intel® VTune™ Profiler and Intel® Advisor OpenMP* Regions Display Support OTF2 Format Support
Navigating Timelines x
Zoom Stack
Concepts x
Level of Detail Aggregation Advanced Aggregation Tagging and Filtering
Viewing Correctness Checking Reports x
Event Timeline Correctness Checking Reports Qualitative Timeline Correctness Checking Reports Detailed Dialog
Comparing Two Trace Files x
Mappings in Comparison Views Comparison Charts
Mappings in Comparison Views x
Mapping of Processes Mapping of Functions
Comparison Charts x
Comparison Function Profile Comparison Message Profile Comparison Collective Operations Profile
Intel® Trace Collector Reference x
API Reference Configuration Reference Correctness Checking Errors Structured Tracefile Format stftool Utility Time Stamping Secure Loading of Dynamic Link Libraries* on Windows* OS
API Reference x
Initialization, Termination and Control Defining and Recording Source Locations Defining and Recording Functions or Regions Defining and Recording Scopes Defining Groups of Processes Defining and Recording Counters Recording Communication Events Additional API Calls in libVTcs C++ API
Initialization, Termination and Control x
VT_initialize VT_finalize VT_getrank VT_registerthread VT_registernamed VT_registerprefixed VT_getthrank VT_traceon VT_traceoff VT_tracestate VT_symstate VT_flush VT_timestamp VT_timestart VT_setfinalizecallback VT_getdescription VT_countsetcallback
Defining and Recording Functions or Regions x
New Interface Old Interface State Changes
C++ API x
VT_FuncDef Class Reference VT_SclDef Class Reference VT_Function Class Reference VT_Region Class Reference
Configuration Reference x
Configuration File Format Protocol File Configuration Options
Configuration Options x
ACTIVITY ALTSTACK AUTOFLUSH CHECK CHECK-LEAK-REPORT-SIZE CHECK-MAX-DATATYPES CHECK-MAX-ERRORS CHECK-MAX-PENDING CHECK-MAX-REPORTS CHECK-MAX-REQUESTS CHECK-SUPPRESSION-LIMIT CHECK-TIMEOUT CHECK-TRACING CLUSTER COMPRESS-RAW-DATA COUNTER CURRENT-DIR DEADLOCK-TIMEOUT DEADLOCK-WARNING DEMANGLE DETAILED-STATES ENTER-USERCODE ENVIRONMENT EXTENDED-VTF FLUSH-PID FLUSH-PREFIX GROUP HANDLE-SIGNALS INTERNAL-MPI KEEP-RAW-EVENTS LOGFILE-FORMAT LOGFILE-NAME LOGFILE-PREFIX LOGFILE-RANK MEM-BLOCKSIZE MEM-FLUSHBLOCKS MEM-INFO MEM-MAXBLOCKS MEM-MINBLOCKS MEM-OVERWRITE NMCMD OS-COUNTER-DELAY PCTRACE PCTRACE-CACHE PCTRACE-FAST PLUGIN PROCESS PROGNAME PROTOFILE-NAME STATISTICS STATE STF-PROCS-PER-FILE STF-USE-HW-STRUCTURE STOPFILE-NAME SYMBOL SYNC-MAX-DURATION SYNC-MAX-MESSAGES SYNC-PERIOD SYNCED-CLUSTER SYNCED-HOST TIME-WINDOWS (Experimental) TIMER TIMER-SKIP UNIFY-COUNTERS UNIFY-GROUPS UNIFY-SCLS UNIFY-SYMBOLS VERBOSE VT_START_PAUSED VT_COMPRESS_TRACE
Correctness Checking Errors x
Supported Errors How the Collection Works
How the Collection Works x
Parameter Checking Premature Exit Overlapping Memory Detecting Illegal Buffer Modifications Buffer Given to MPI Cannot Be Read or Written Distributed Memory Checking Illegal Memory Access Request Handling Datatype Handling Buffered Sends Deadlocks Checking Message Transmission Datatype Mismatches Data Modified during Transmission Checking Collective Operations Freeing Communicators
Structured Tracefile Format x
STF Components Single-File STF Configuring STF
stftool Utility x
stftool Utility Options Expanded ASCII output of STF Files
Time Stamping x
Clock Synchronization Choosing a Timer
Choosing a Timer x
gettimeofday/_ftime QueryPerformanceCounter CPU Cycle Counter Normalized CPU Cycle Counter MPI_Wtime() High Precision Event Timers POSIX* clock_gettime
Intel® Trace Analyzer Reference x
Graphical User Interface Reference Intel® Trace Analyzer Command Line Interface Reference Filter Expression Grammar otf2-to-stf Utility
Graphical User Interface Reference x
Welcome Page Summary Page Main Menu Bar View Menu Bar View Bars Charts Dialogs Settings
Main Menu Bar x
File Menu Options Menu Project Menu  Windows Menu Help Menu
View Menu Bar x
View Charts Navigate Advanced Layout Comparison Menu
Advanced x
Tagging Specific Events Filtering Events Simulating Ideal Communication Checking Application Imbalance Aggregating Results Aggregating Functions Creating Command Line for Intel® VTune™ Profiler and Intel® Advisor
View Bars x
Toolbar Trace Map Status Bar
Charts x
Event Timeline Qualitative Timeline Quantitative Timeline Counter Timeline Function Profile Message Profile Collective Operations Profile Performance Assistant Common Chart Features
Event Timeline x
Context Menu Filtering and Tagging
Qualitative Timeline x
Context Menu Filtering and Tagging
Quantitative Timeline x
Context Menu Filtering and Tagging
Counter Timeline x
Context Menu Filtering and Tagging
Function Profile x
Flat Profile Load Balance Call Tree Call Graph Context Menu Filtering and Tagging Function Profile Settings
Message Profile x
Context Menu Filtering and Tagging Aggregation Message Profile Settings
Collective Operations Profile x
Context Menu Filtering and Tagging Collective Operations Profile Settings Preferences Tab Colors Data
Dialogs x
Process Aggregation Function Aggregation Function Group Color Editor Filtering Dialog Box Tagging Dialog Box Idealization Dialog Box Imbalance Diagram Dialog Box Trace Merge Dialog Box  Details Dialog Box Source View Dialog Time Interval Selection Configuration Dialogs Find Dialog Box Command line for Intel® VTune™ Profiler and Intel® Advisor Dialog Box OTF2 to STF Conversion Dialog Box Configuration Assistant
Process Aggregation x
Comparison Mode
Function Aggregation x
Comparison Mode
Filtering Dialog Box x
Building Filter Expressions Using Graphical Interface Building Filter Expressions Manually Filter Expressions in Comparison Mode
Details Dialog Box x
Detailed Attributes of Function Events Detailed Attributes of Message Events Detailed Attributes of Collective Operation Events
Configuration Dialogs x
Load Configuration File Dialog Edit Configuration File Dialog
Settings x
Preferences Font Settings Number Formatting Settings
Preferences x
General Preferences Tracefile Preferences Event Timeline Settings Qualitative Timeline Settings Quantitative Timeline Settings Counter Timeline Settings
Notices and Disclaimers x
Appendix A Copyright and Licenses
Intel® Trace Analyzer and Collector User and Reference Guide

Collective Operations Profile Settings

Use the Collective Operations Settings to change the settings of the Collective Operations Profile and the Chart display. You can change the colors, the layout and the statistical attributes.

The Collective Operation Profile Settings dialog box is divided into three tabs namely the Preferences tab, the Colors tab and the Data tab.

Preferences Tab

Use the Preferences tab to adjust the Display settings and the Layout settings.

Setting Description
Row Labels Control the display of the row headers
Column Labels Control the display of the column headers
Scale Display the colored scale that is seen on the right-hand side of the matrix
Grid Control display of the black grid around the cells
Keep Empty Rows/Columns when using Sender/Receiver Groupings

Switches a special feature that is only relevant for the Groupings Sender and Receiver.

For these groupings, when enabled all processes should always be shown, for example, include displaying empty rows and columns. It keeps the form of the matrix constant and makes it easier to identify patterns.

When disabled, empty rows and columns even for these groupings are suppressed. All other groupings suppress empty rows and columns to save screen space regardless of the state of this check box.
Communicator Names Display helpful communicator names (if available in the trace file). This may take a lot of valuable screen space
Communicator Ids Restrict the display to show only concise communicator ids.
Automatic Cell Sizes mode, checking Equal Cell Sizes

Make each column equal in width.

When selected, Square Cell Sizes attribute is enabled
Square Cell Sizes Render square cells.
Manual Cell Sizes

Specify the size of the cells. This is done either in the Cell Size group at the bottom of the tab or by sizing the cells manually with the slider that is available on top of the matrix as soon as this setting is applied.

In this mode, the alphanumerical data in the cells is displayed only if it fits. Otherwise, it is switched off entirely by unchecking the check box Text in Cells.

Colors

Setting Description
Maximum Color Choose the colors for the maximum attribute values
Minimum Color Choose the colors for the minimum attribute values
Steps Specify the number of color steps (1-255)

The chosen colors are treated as points in a color space and the colors of the scale are interpolated on a line through color space connecting these two points. You can select space to use either HSV or RGB. HSV is fancier and colorful, but RGB is often more useful and readable. For monochrome printing, it is advisable to choose a very light and a very dark color. You can choose white for the minimum and black for the maximum.

By enabling Manual Scaling it is possible to specify the minimum and maximum values for the color scale in the following two fields.

Data

Customize how the Collective Operations data is displayed and analyzed. The Data features are subdivided into the Grouping section, the Datum section, the Row Statistics and the Column Statistics.

Setting Description
Grouping

Choose how the data is grouped into categories by independently selecting what is in the rows and columns.S

Note that not all combinations are possible. For example, you cannot have the Communicator for both the row and column.

All the header values are explained below.
Communicator

Categorize the messages by the MPI communicator.

The labels are either communicator ids or names. Names are displayed if they are available in the trace file and if they are chosen in the Preferences tab of the Settings dialog box.
Collective Operation Display the types of operations like MPI_Allreduce and MPI_Bcast.
Root Display the root used in the operation, if applicable. If there is no root, a label No Root is created.
Process Categorize the operations by the processes.
Datum Choose which attribute should be printed or painted in the cells.
Total Time

The total time spent in operations, accumulated over all operations and all processes referred in this cell.

For a single process and a single operation this is the time spent in the call to the operation. For cells referring to a process group this is the sum of the times all contained processes did spent in the operation. For many operations it is the sum over the times spent in each single operation.

The unit can either be seconds [s] or ticks [tick] depending on the View setting.
Minimum Time The minimum time spent in an operation, minimized over all operations and all processes that fall into this cell ([s] or [tick])
Maximum Time The maximum time spent in an operation, maximized over all operations and all processes that fall into this cell ([s] or [tick])
Total Volume Sent The total data volume that has been sent from all operations in this cell [bytes]
Minimum Volume Sent The minimum amount of data volume that has been sent by an operation in this cell [bytes]
Maximum Volume Sent The maximum amount of data volume that has been sent by an operation in this cell [bytes]
Total Volume Received The total data volume that has been received by all operations in this cell [bytes]
Minimum Volume Received The minimum amount of data volume that has been sent by an operation in this cell [bytes]
Maximum Volume Received The maximum amount of data volume that has been received by an operation in this cell [bytes]
Total Data Volume The total data volume, accumulated over all operations in this cell
Count The number of operations in this cell
Row Statistics Specify whether the statistical values like the sum, the mean or the standard deviation should be displayed for the rows. Similarly, Column Statistics give the above mentioned statistical values for the given columns.
Parent topic: Collective Operations Profile
Level Two Title