L1 hit ratio vs. Prefetching
My hotspot function in VTune shows that L1 hit ratio is 99% (and L1 misses is 5%). Does that mean that almost all of the data I need is already prefetched into the caches and there is no need for...
View ArticleAnalyzing overhead of polymorphic code- no branching metrics available?
Hi,I am analyzing the different between two designs which process millions of messages. One design uses polymorphism and the other doesnt- each message will be represented by a polymorphic sub type.I...
View ArticleDon't see threads
Hi,I'm collecting hotspots on SUSE 11.3 with the following command: amplxe-cl -collect hotspots -duration 200 -run-pass-thru=--no-altstack -result-dir /cores/results/socket_sleep_0 -target-process...
View Articlehardware counter information for individual functions via commandline
Dear Vtune experts,I am trying to gather hardware counter information for individual functions in a code. While this seems straightforward in GUI, I haven't found a way through command line...
View ArticleVTune timestamp api
HiI would like a function that would provide me the timestamp vTune uses in its timeline, so that any program trace/output can be tagged with this timestamp for a more comprehensive analysis (e.g.., I...
View ArticleL1, L2 and LLC instruction and data cache misses on E5-2420 using intel vtune
Hi, I am trying to find out the L1, L2 and LLC instruction and data cache misses of the application. I am using Intel(R) Xeon(R) CPU E5-2420 0 @ 1.90GHz. Can you please tell me how can I find...
View ArticleError: Failed to allocate Injector, Error =...
Hello,I just installed the VTune Amplifier XD (2013) evaluation edition (I have had a license key ordered but I have not yet received it).I am trying to look into some performance issues that are...
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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:...
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