How to identify the cause for the high CPI rate

Authored by mahesh w.

I was trying to identify the reason for the lateness of my program. And I notice that one function has high CPI value (4.5), and it says the reason may

Last updated on 16/12/2014 - 19:50

Performance Overhead Introduced By Tool Itself

Authored by Jinyong K.

Hi all,

We are now trying to evaluate this tool for our products.

Our main interest in vtune is wether is can profile apps without any overhead.

Last updated on 21/12/2014 - 18:57

Call stack mechanism implementation question

Authored by Richard H.

I am running a Go program with dwarf information and VTune does a good job figuring out line numbers and so forth but it struggles with stack walks.

Last updated on 12/02/2015 - 19:20

insufficient virtual memory

Authored by dkokron

I am getting an error while loading a result from a general exploration experiment.  This is an MPI executable, but collection was only done for one process on each node.  See attached PNG for the

Last updated on 30/12/2014 - 10:06

sfdump5 tool in VTune

Authored by ja123

There seems to be some mention of a command-line sfdump5 tool that can be used to process/view the samples within a .tb6 file.

Last updated on 30/12/2014 - 11:58

Centos7 kernel oops when running

Authored by Dennis F.

When evaluating the vtune_amplifier_xe_2015.1.0.367959 on Linux I experienced a kernel oops in the vtune kernel modules.

Last updated on 04/01/2015 - 04:29

A 'Failed to create sampling data base' Problem

Authored by hongyu l.

I am newer to VTune, and using VTune performance analyzer v9.1 on Windows XP(Intel Pentium G3420).

Last updated on 08/01/2015 - 16:08

ittnotify in xeon phi offload regions

Authored by james B.

I'm trying to call the functions __itt_pause() and __itt_resume() from within offload regions so that I can only sample specific sections of my code in a knc-bandwidth collection.

Last updated on 05/01/2015 - 07:41

Assertion fail during

Authored by Martin I.



During VTune Amplifier XE installation, on Fedora20 X64, I am getting an assert and install fails, 

Any suggestion how to fix it is welcome.


Last updated on 07/01/2015 - 03:33

“memory bound” metric in Vtune

Authored by Robin


I am analyzing “memory bound” metric in my code with Vtune. According to "Intel® 64 and IA-32 Architectures Optimization Reference Manual-B.3.2.3":

Last updated on 12/01/2015 - 19:34