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Two summary results attached- assistance with interpretation
I have implemented some code using two approaches. I am looking at the results (attached) and I can tell that the "faster" version had less branch mispredictions, less L1 instruction cache misses,...
View ArticleA few questions regarding hardware events
Greetings,Looking at the below link, what exactly is the difference between non-precise and precise monitoring? Might seem a silly question- but why would anyone ever use unprecise...
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Erroneous detailed hardware metrics in VTune Amplifier XE 2013
Hello,I'm having problems with my analysis results in VTune. Whenever i do an analysis, hardware event-based metrics behave strangely. Their "aggregator" (e.g. Bad Speculation) seems to show correct...
View Articleframe analysis with a graphic application build with VC6.0
hello,i am a newly user of vtune. i am learning to develop a game on dx9.it's IDE is VC6.0. I encoun some performan issues. I use the vtune 2013 update 15 to do frame analysis on my...
View ArticleIntel Vtune is not loading data for general exploartion
Hello,I am running an application on Intel Vtune (vtune_amplifier_xe_2013) on the linux system (ubuntu). However, intel vtune is not load data into the target file.amplxe: Collection stopped. amplxe:...
View ArticleQuestion about performance
I'm writing to see if someone could help me understand an issue in our solver that recently came up while using Vtune Amplifier. I'll try and describe this here: Using vtune amplifier we see that the...
View ArticleQuestion about performance
I'm writing to see if someone could help me understand an issue in our solver that recently came up while using Vtune Amplifier. I'll try and describe this here: Using vtune amplifier we see that the...
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Hardware EBS support on Ivy Bridge-E i7-4930K
Hi,I'm trying to install "Intel C++ Studio XE 2013 SP1 Update 2 for Windows" on my workstation in order to run VTune etc. however in the pre-requisite issues screen in the installer it's reporting that...
View ArticleLock and Waits analysis empty of information
I am trying to improve a component library we developed. If I call the library in a console based (text) program, written specifically to test one routine, vTune Lock and Wait analysis do show Worker...
View ArticleVTune time doesn't match program time
Hi,I used VTune to profile a MPI+OpenMP program running on a Xeon Phi processor (native mode) . However, I noticed there is discrepancy between the VTune time and the time reported by my timer, as...
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Error while building sampling driver and Error while building power driver
Hi,I receive these messages, during installation of Intel Cluster Studio XE(sp1: l_ics_2013.1.046):Error while building sampling driver, see /tmp/amplifier_sampling_build_13.03.14.17.50.07.log for...
View ArticleVTune on the Intel Galileo Board (Quark)
Hello,has anybody managed to run VTune on the Intel Galileo Board (remotely)?I got stucked trying to build the kernel modules. Started with 'meta_clanton_v0.7.5' but I think the kernel is not correctly...
View ArticleThe data cannot be displayed: there is no viewpoint applicable for the data
I have just downloaded the trial of vTune Amplifier XE 2013 r.16 and have tried to do a basic hotspot analysis from with VS 2012. Unfortunately all I get is the error: "The data cannot be displayed:...
View ArticleSeems not detect end of apllication. Report: BUG! Please contact the...
Hello,I'm just taking a look at the VTune Amplifier XE and following the tutorial "Find hotspots" with my application.After pressing the "Start" button I saw my debug messages at the terminal and the...
View ArticleLevel 2 data cache event counters?
Below is a list of all the event counter I have available on my Ivy Bridge CPU. It contains "L1D" cache event counters, but there are no "L2D" counters- only "L2". I was under the impression the L2...
View Article"LLC Load Misses Serviced By Remote DRAM" seen on Xeon X5650 with only 1 CPU?!
Hi,after doing a Nehalem General Exploration of my code, the results show several "LLC Load Misses Serviced By Remote DRAM" events. I have measured this on a Xeon X5650 platform with only 1 CPU (6...
View ArticleHow to choose the (correct) CPU for profiling?
I'm quite new to vTune profileing so I'm guessing this is a simple question: When choosing the analysis type, I can see for the event details: "Event configured for CPU: Intel(R) Xeon(R) E5...
View ArticleMPI program profiling on Xeon phi error
Hello, I am using Vtune to profile my MPI progam which involves two ranks (one on Xeon and the other on Xeon-phi)I have set up a NFS mount for shared libraries and the path for vtune is visible from...
View ArticleMEM_TRANS_RETIRED.LOAD_LATENCY_GT* unexpected results.
Hi all,I am trying to use VTune Amplifier (Linux version) to profile memory access latency. I was using it to get familiar with it by profiling a toy program that just loads a big array of data. I use...
View ArticleProfiled program fails to write files
I am a newbie using vtuneI am trying to profile a portion of Quantum Espresso (http://www.quantum-espresso.org/) However, when run under (or attached to) VTune gui, program raises a file handling error...
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