Intel® VTune™ Amplifier XE and VTune™ Performance Analyzer

"LLC Load Misses Serviced By Remote DRAM" seen on Xeon X5650 with only 1 CPU?!


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 cores, 12 incl. hyper threading), so my question is: how can there be a "remote" DRAM if there is only 1 CPU? As far as I know, "remote DRAM" means a piece of memory which is attached to another CPU and thus requires a QPI transfer.



Level 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 cache is split in to data and instruction caches. 

(I have read the descriptions of the below event counters and the "L1D" says "L1 data cache" and the "L2" says "L2 cache", implying it is not specific to the data cache).

What event counters should I use to measure data cache misses for L1/L2/L3, ignoring instruction cache misses?

Seems not detect end of apllication. Report: BUG! Please contact the technical support.


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 application reached its end but the VTune seems not to detect it and shows no reaction any more. If I kill it, it shows:

The 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: there is no viewpoint applicable for the data".  I have attached the output below.  I think I have the project options setup correctly. What do I need to get it working?



VTune on the Intel Galileo Board (Quark)


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 configured. There sme messaages about 'CONFIG_MODULES' etc. not beeing set. Finaly 'cylcles_t' is not defined and compiling stops.

Any help is appreciated!



Error while building sampling driver and Error while building power driver


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. for details

Error while building power driver, see /tmp/amplifier_power_build_13. for details


Logs are attached, but they don't help me much.


I am using this kernel: 2.6.32-431.5.1.el6.x86_64 (CentOS 6.5)


How can i build these two drives correctly, after installation?


Thanks in advance


Hardware EBS support on Ivy Bridge-E i7-4930K


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 "The processor in this system does not support hardware event-based sampling". Is this true?

I looked at the release notes before I bought my license to Studio XE today but did not see there was a restriction on the support for the recent generation of Intel CPUs.

Question 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 time spent in a function "mucal" goes up as number of threads increase. On 8 threads, mucal is at the top of the list.   mucal is a function that calculates viscosity. This is called in the following manner.    
do ijk=1,iend   mu(ijk)=mucal(ijk,iopt) end do
  CFD mesh First cell index: 1 CFD mesh Last cell index:  iend   OpenMP threads split ijk index.   
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