How do we know that the code is thread safe in sample application?
I am following this tutorial to understand how to remove locks , using VTUNE This page says the following after collecting Vtune results: **Identify the Hottest Code Lines** Click the hotspot...
View ArticleThere are no hardware events for LLC on the platform of Intel Xeon Core...
I want to get the miss rate of LLC on the platform of Core.But while I use the cunstom analysis and try to pick the hardware events related to the LLC from the available events, I cannot find any.Does...
View ArticleFailed to compile sample program tachyon with vtune_amplifier_xe_2013
When I tried to build the sample program "tachyon", I see the following errors. I am running on Ubuntu 13.04 Linux. Please...
View ArticleHow to find the microarchitecture code name? I want to analyse the...
I try to use VTune™ Amplifier XE 2011 to test the performance hardware issues of my C code project. But when I built a new amplifier project and attended to start a new Analysis for hardware Issues...
View ArticleI'm still confused by how to calculate the L1, L2 cache miss ratio after...
I'm trying to use Vtune to get the L1I, L1D, and L2 cache miss ratio on the platform of Intel Xeon core microarchitecture.First of all, the miss ratio I'm trying to get is the one under traditional...
View Articlewindows driver setup
When I try to run the current VTune general analysis on my new Windows 8.1 installation, it tells me the driver isn't running. As there is no sep folder in the installation, I don't know where to go...
View ArticleWhy don't VTune Amplifier run out?
Hello everyone ! I put a serial program modifications for parallel programs with Intel TBB.Now the serial program is running one hour,and the parallel program is running just 10 minutes....
View Articlethe program with TBB can't analyze the hotspots
Hello everyone! I have a serial program,and i have changed it with Intel TBB,now it is a parallel program.The serial program need one hour,and the parallel need 10 minutes.But the parallel...
View ArticleNo Event-based sampling on VTune Amplifier 2013 on Microsoft Surface Pro 2
Hi,VTune Amplifier 2013 does not detect event-based sampling capabilities on Microsoft Surface Pro 2 running Windows 8.1, which has Intel Core i5 4200U.Is this Intel Core i5 4200U lacking the...
View ArticleAmplifier and Java memory
Hi,I am using Vtune Amplifier XE 2013.I want to profile a C++ application which also issues some java calls within the target functionality. However, the java calls are not the performance problem. As...
View Articlebandwidth analysis on xeon phi
According to the tutorials bandwidth analysis can be performed in 2 ways. 1.knc-cutom analysis (from core) 2. knc-bandwidth (just uncore)http://www.youtube.com/watch?v=vnOqpyzui_sI would like to do it...
View Articlehow to profile mpi appllication using intel vtune amplifier
hi ,i am using vtune amplifier for profiling the mpi-hmmr application, but it wont show any source code.even vtune failed to show source of normal mpi program,i have tried project properties of the...
View ArticleFinalizing results is very slow under windows
Hello,I'm trying to profile a sensitive spot in one of our tools.I'm using the standalone Intel Vtune Amplifier XE 2013 on windows 7.I configured the analysis to use the advanced hotspots analysis...
View ArticleResults show all functions as: func@0x78ea12fa
I've been profiling with VTune for a long time, and recently in VTune I've started getting unusable results. Almost every entry in the function list of the bottom up analysis is just func@address. For...
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New experimental feature: OpenCL* performance analysis on Intel® HD Graphics
If you use the recent Intel® SDK for OpenCL* Applications you might know that Intel® VTune™ Amplifier XE 2013 Update 5 (released Feb. 26, 2013) includes a new experimental feature of OpenCL*...
View Articlevtune usage: How can i remove the latest filter instead of removing them all
Hi,i was wondering if there is a way to manage filters. Say i am looking at a specific thread and then filter in a specific call within that thread. How i can i remove the last filter without removing...
View ArticleCannot open the external text editor for this file.
Hi all~I use vtune to find out the hotspot of the program, but when I try to edit the code through double-click the hotspot code line it says that"cannot open the external text editor for this...
View Articleresolving linux kernel addresses
Hello,I am trying to profile an application using VTune Amplifier (downloaded a few days ago, evaluating period). VTune shows that most of the time is spent "[Outside any known module]". By switching...
View ArticleCombined Locks&Waits and CPU Hotspots View
Hello all,is it possible to configure a combined Locks&Waits and CPU Hotspots view in VTune?What I imagine is a view which shows the complete wall time structure of the callgraph profile data. The...
View ArticleError: Communication with sampling driver failed.
Hi,During finalizing analysis I get such error: "Communication with sampling driver failed.". How to solve this problem? Does it influence analysis results?I use VTune 2013 update 14 on Windows 7 x64...
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