Intel® Inspector for Systems within
Intel® System Studio 2015
Intel® System Studio 2015
Complete Development Solution for
Intelligent/Embedded Systems
Finding 3 common embedded programming errors
using Intel® Inspector 2015 for Systems
What you will learn from this slide deck
•Intel® Inspector for Systems technical
training for
System & Application code running Linux*
•Please see subsequent slide decks for
in-depth technical training on other
components
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Intel® Inspector 2015 for Systems
Easier Migration From Other Tools
• Import suppression lists from Purify* and Valgrind* on Linux*
Fewer False Errors and Easier Suppression Management
• Precise suppressions specify single or multiple stack locations
• User editable suppression files (or use the GUI)
Leak Reports No Waiting!
• Set a baseline for incremental analysis with GUI or API
• Report incremental leaks and heap growth since the baseline
• No waiting until the end of the analysis run
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Agenda
Intel® Inspector 2015 for Systems
Finding three common embedded
programming errors using Intel® Inspector
2015 for Systems.
1. Dynamic Memory Errors
2. Dynamic Threading Errors
3. Static Analysis Errors
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Analyzers
 System-on-Chip (SoC) Wide Analysis
 Intel® VTune™ Amplifier
– Intel® Energy Profiler
– Multicore performance analysis
 Identify difficult to find memory and
threading errors with Intel® Inspector
 Support for embedded Linux* OSs
 Race conditions, dead locks, …
 Memory leaks, unallocated
memory, …
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Intel® VTune™ Amplifier 2015 for Systems
Performance Analyzer
“The ability for Intel® VTune™ Amplifier to exactly pinpoint
performance bottlenecks in our code was a big time saver and
made it a far better choice compared to other analysis tools that
we used.”
Jagadish Kamath, Co-founder and Software Architect, RiverSilica
Technologies
Where is my system…
Spending Time?
• Focus tuning on
functions taking time
• See call stacks
• See time on source
Wasting Time?
Waiting Too
Long?
Waking-up Too
Often?
• See cache misses on
your source
• See functions sorted
by # of cache misses
• See locks by wait time
• See wakeup causes
on your source
• Red/Green for CPU
utilization during wait
• See CPU frequencies
per core
Advanced profiling for power efficiency and scalable multicore performance
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Performance profiling:
Intel® VTune™ Amplifier for Systems
Target device
Host
VTune
GUI
Vtune
result
Data is opened in GUI and
symbols are resolved
using modules stored in
result dir
User can specify search
dir with separate debug
files if needed
amplxe-runss.py
control
collection
transfer
data/modules
VTune
collector
binary runs on
target and
stores result
on target
(local storage
like card or
NFS mounted)
Intel®
Inspector for Systems uses
amplxe-runss
a similar model as VTune™ Amplifier.
Data is collected on your target.
Vtuneneed to be copied back
SSH The results
result
To your Linux* host to be displayed.
SSH
driver
CLI interface for remote
collection. Transfers data
collected remotely back to
host automatically together
with application modules for
symbol resolution
No remote collection script!
• Simple python script (no remote collection in GUI)
• Using SSH protocol for data transfers
• Flexible collection configuration + control (pause/resume/stop)
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Intel® Inspector 2015 for Systems
Where are my application’s…
•
•
Memory Errors
Threading Errors
Security Errors
• Invalid Accesses
• Memory Leaks
• Uninitialized Memory
Accesses
• Races
• Deadlocks
• Cross Stack References
• Buffer overflows and
underflows
• Incorrect pointer usage
• Over 250 error types…
Developing threaded applications can be complex and expensive
New class of correctness problems are caused by the interaction between
concurrent threads
Multi-threading problems are hard to reproduce, difficult to debug and
expensive to fix!
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Software Development Challenges
Challenge
Need
Effective analysis tools to find
coding defects and vulnerabilities
during the development lifecycle
Size and complexity of applications
are greater, organizations facing
more application defects,
vulnerabilities and costs
Reduce time, effort, and cost
required to find and repair coding
defects and security vulnerabilities,
prior to deploying software
Reworking defects 40%-50% of
total project effort*
Using correctness tools in
development cycle, increases ROI by
12%-21%*
Increase developer productivity and
proficiencies in delivering
application reliability & integrity
Cost Factors – Square Project Analysis
*CERT: U.S. Computer Emergency Readiness Team, and Carnegie Melon CyLab
*NIST: National Institute of Standards & Technology : Square Project Results
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Solution: Intel® Inspector 2015 for Systems
Dynamic and Static Analysis tools for embedded systems
Value Proposition
What
Is It?
How
So?
What
You
Get?
Developer Productivity Tool
Advances Application Reliability, Quality, & Integrity
Finds Crucial Errors Early in Development Lifecycle
Detects Memory, Threading, and Security vulnerabilities defects
Helps reduce time, effort, and cost. Increases ROI
Comprehensive Dynamic & Static Analysis Coverage
Essential time-saving productivity tool to proficiently eliminate crucial errors and achieve
application reliability, quality, and integrity. Protects Investments
Software Reliability, Quality, Security Seekers
Who
Cares?
Optimization Notice
serial and parallel application developers
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Intel® Inspector 2015 for Systems
Process Flow
Intel® Inspector XE
Source Code
Compile/Link
Configure
Analysis
Suppression
Filter
Filter/
Change State/
Suppress
Execution/
JIT Instrumention
Runtime
Analysis
Engine
Executable Code
+.dll(s)
+.dll(s)
Input/Workload
Optimization Notice
Diagnostic Data
Small is
better!
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Embedded Data Collection
Analyze data collected on an embedded systems
Local System
Inspector for Systems
Full user interface
Copy command line
Embedded System
Lightweight command line
collector
Copy results file
Optimization Notice
1.
Setup the experiment using GUI
locally
2.
Copy command line instructions
to paste buffer
3.
Open remote shell on target
machine
4.
Paste command line,
run collection
5.
Copy result file to your local
system
6.
Open file using local GUI
Copyright © 2015, Intel Corporation. All rights reserved. *Other names and brands may be claimed as the property of others.
Intel® Inspector 2015 for Systems
Memory Analysis
Analyzed as software runs
– Data (workload) -driven execution
– Program can be single or multi-threaded
– Diagnostics reported incrementally as they occur
Includes monitoring of:
– Memory allocation and allocating functions
– Memory deallocation and deallocating functions
– Memory leak reporting
– Inconsistent memory API usage
Find memory issues fast by monitoring memory
accesses
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Running a Memory Analysis
Be aware the level you chose can effect
The application speed. You should tailor
Your app to use the smallest input possible.
Select level of
analysis
You can also
Specify regions
To collect.
If you are running on
The host can
Also use the debugger.
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Running a Memory Analysis (contd)
Inspector finds the correctness errors
in your code.
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Intel® Inspector 2015 for Systems
Threading Analysis
Analyzed as software runs
– Data (workload) -driven execution
– Program can be single or multi-threaded
– Diagnostics reported incrementally as they occur
Includes monitoring of:
– Data Races
– Deadlock/Lock Hierarchy Violation
– Cross Stack Memory Accesses
Find threading issues fast by monitoring memory
accesses
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Code Locations grouped into
Problems
Code Locations and call
stacks contributing to
selected Problem
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Intel® Inspector 2015 for Systems
Static Analysis
What Does Static Security Analysis Detect?
 250 Different Coding Issues
 Buffer overflows and boundary violations
 Use of uninitialized variables and objects
 Memory and other resource leaks
 Incorrect usage of pointers and
dynamically allocated memory
 Incorrect use of OpenMP* and Cilk directives
 Error prone C++ and Fortran language usage
 Misuse of string, memory, and formatting library routines
 … (many others: ~250 different problems)
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How is security testing different from correctness testing?
Correctness testing focuses on conformance to language
rules
 Did I use this pointer/array legally?
Security testing adds an additional focus on safety
 Did I use an error-prone coding style?
 Did I use dangerous library routines?
 Did I examine user input before using it in a dangerous way?
Example of something correct but unsafe
int main(int argc, char **argv) {
System(argv[1]); // executes arbitrary command
}
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Using Intel® Inspector 2015 for Systems as a regression tester.
One powerful feature of Inspector 2015 is the
availability of a fully featured command-line mode.
For example an Inspector memory checking level 2
analysis:
inspxe-cl –collect mi2 application
This command line mode is very useful for
implementing regression testing via scripts!
You can write scripts that compare a current run to a
baseline run. If the errors are different then the
regression test would fail!
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HOW TO collect data on Yocto Project*
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Yocto Project* at Intel
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Building the Yocto Project* kernel
Install the poky compilation toolchain
•

This toolchain contains the compilation system to cross build for yocto.




http://downloads.yoctoproject.org/releases/yocto/yocto-1.2.1/toolchain/
The toolchain name takes the form of:
poky-eglibc-<host_system>-<arch>-toolchain-gmae-<release>.tar.bz2
For example for atom development on a an x86_64 host:
–
poky-eglibc-x86_64-i586-toolchain.gmae.1.2.1.tar.bz2
–
Untar in location /opt/poky/1.2
– Note: You must install in this location.
Clone/Checkout the meta-intel package (Note: you may have firewall issues with git
that require proxy settings)
•
Optimization Notice

git clone git://git.yoctoproject.org/meta-intel/


cd meta-intel
git checkout denzil origin/denzil
Copyright © 2015, Intel Corporation. All rights reserved. *Other names and brands may be claimed as the property of others.
Configure the Yocto Project* kernel (contd)
•
Download the Latest stable Yocto Project* build system.
 wget http://downloads.yoctoproject.org/releases/yocto/yocto-1.2.1/poky-denzil7.0.1.tar.bz
•
tar xjf poky-denzil-7.0.1.tar.bz2
•
source poky-denzil-7.0.1/oe-init-build-env poky-denzil-7.0.1-build
•
Edit poky-denzil-7.0.1/build/conf/local.conf
 Tailor MACHINE for the bsp you want to build.
 In my case I am building fri2-noemgd
 Fish Island BSP
•
Also Edit poky-denzil-7.0.1/build/conf/bblayers.conf
 Specify the meta-intel you checked out.

Optimization Notice
Specify the specific BSP meta directory. (meta-intel/meta-fri2)
Copyright © 2015, Intel Corporation. All rights reserved. *Other names and brands may be claimed as the property of others.
Build the Yocto Project* kernel
bitbake core-image-sato
•

This will produce a full build. (capable of running sep)
A smaller kernel can be built using:
•

bitbake core-image-minimal
No device drivers are required to run an Inspector 2015 for
Systems collection.
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Setting up your embedded system to run Intel® Inspector 2015 for Systems
You need to manually copy the Inspector release to your embedded
target.
From your host:
scp –r /opt/intel/system_studio.0.*.*/inspector_for_systems
target_ip:/home/root
Login to your embedded target
ssh root@target_ip
source /home/root/inspector_for_systems/inspxe-vars.sh
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Running a collection on your embedded system with Intel®
Inspector 2015 for Systems
Continuation from previous slide.
For an Inspector Memory Checker collection
inspxe-cl –collect mi2 application_name
(note: you can also select mi1 or mi3.)
For an Inspector Thread Checker collection
inspxe-cl –collect ti2 application_name
(note: you can also select ti1 or ti3.)
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Displaying embedded results on host
On your linux host:
Copy the collected results from your embedded
system.
scp –r target_ip:/home/root/r00mi2 .
source
/opt/intel/system_studio.0.*.*/inspector_for_syste
ms/inspxe-vars.sh
Open your results in the Inspector GUI
inspxe-gui r00mi2
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Display results
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Summary
•
Intel® System Studio 2015 provides deep system-level
insights into power, reliability and performance to help
accelerate time to market of Intel Architecture-based
embedded and mobile
• Comprehensive software development tools
solution set for embedded devices and intelligent
systems
• Integrates into cross-build environments for
Yocto Project*, Wind River* Linux*, and custom
Linux*
• Covers all phases of development
• Powerful open source debug enhancements
through GDB and SVEN
• Power Analysis, Performance Analysis, Thread
Checking & Memory Checking
For more information, to evaluate, or purchase:
http://intel.ly/system-studio
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Legal Disclaimer & Optimization
Notice
INFORMATION IN THIS DOCUMENT IS PROVIDED “AS IS”. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR
OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. INTEL ASSUMES NO
LIABILITY WHATSOEVER AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO THIS
INFORMATION INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
Software and workloads used in performance tests may have been optimized for performance only on Intel
microprocessors. Performance tests, such as SYSmark and MobileMark, are measured using specific computer
systems, components, software, operations and functions. Any change to any of those factors may cause the results to
vary. You should consult other information and performance tests to assist you in fully evaluating your contemplated
purchases, including the performance of that product when combined with other products.
Copyright © 2015, Intel Corporation. All rights reserved. Intel, Pentium, Xeon, Xeon Phi, Core, VTune, Cilk, and the Intel
logo are trademarks of Intel Corporation in the U.S. and other countries.
Optimization Notice
Intel’s compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that
are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and
other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on
microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended
for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel
microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding
the specific instruction sets covered by this notice.
Notice revision #20110804
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Test
Test
 Test
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Summary
Test
• Test
Find out more at http://intel.ly/system-studio
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Copyright © 2015, Intel Corporation. All rights reserved. *Other names and brands may be claimed as the property of others.
Legal Disclaimer & Optimization Notice
INFORMATION IN THIS DOCUMENT IS PROVIDED “AS IS”. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO
ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. INTEL ASSUMES NO LIABILITY WHATSOEVER AND
INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO THIS INFORMATION INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT,
COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors.
Performance tests, such as SYSmark and MobileMark, are measured using specific computer systems, components, software,
operations and functions. Any change to any of those factors may cause the results to vary. You should consult other
information and performance tests to assist you in fully evaluating your contemplated purchases, including the performance of
that product when combined with other products.
Copyright © 2015, Intel Corporation. All rights reserved. Intel, Pentium, Xeon, Xeon Phi, Core, VTune, Cilk, and the Intel logo are
trademarks of Intel Corporation in the U.S. and other countries.
Optimization Notice
Intel’s compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel
microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the
availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent
optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture
are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the
specific instruction sets covered by this notice.
Notice revision #20110804
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Backup
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10/25/2014