User Guide

Contents

memory-access
Command Line Analysis

Memory Access analysis identifies memory-related issues, like NUMA problems and bandwidth-limited accesses, and attributes performance events to memory objects (data structures), which is provided due to instrumentation of memory allocations/de-allocations and getting static/global variables from symbol information.

Syntax

vtune
-collect memory-access [-knob <
knobName=knobValue
>] [--] <
target
>
For the most current information on available knobs (configuration options) for the Memory Access analysis, enter:
vtune
-help collect memory-access
Example
This example shows how to run the Memory Access analysis on a Linux*
myApplication
app, collect data on dynamic memory objects, and evaluate maximum achievable local DRAM bandwidth before the collection starts:
vtune -collect memory-access -knob analyze-mem-objects=true -knob dram-bandwidth-limits=true -- home/test/myApplication

What's Next

When the data collection is complete, do one of the following to view the result:

Product and Performance Information

1

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