vtune basics

[mcwang88]

Hello,

I am new to Vtuen, want to know some basic concepts. How exactly sampling works? what's the co-relation ship between Instructions and Clockticks? Which one should we used to identify hotspot?

Can someone point me to the basic answer?

Thanks
Andrew

[Ravi_V_Intel]

Andrew,

You may want to read the book "VTune Performance Analyzer Essentials" by James Reinders (ISBN 0-9743649-5-9) which is an excellent treatise on VTune .

You may also want to check out the "Help->Show-me Demos" available once you launch VTune . If you are interested in Thread Profiler tutorial, please access it using "Help->Getting Started Tutorials".

If you have any additional questions, just ask. :)

[Corey_A_Intel]

Quoting - RAVI (Intel)

Andrew,

You may want to read the book "VTune Performance Analyzer Essentials" by James Reinders (ISBN 0-9743649-5-9) which is an excellent treatise on VTune .

You may also want to check out the "Help->Show-me Demos" available once you launch VTune . If you are interested in Thread Profiler tutorial, please access it using "Help->Getting Started Tutorials".

If you have any additional questions, just ask. :)

And the VTune analyzer online help has wealth of information. Start by taking a look at "before you begin" and "sampling"..

[srimks]

Hi.

There is Getting_Started Guide on VTune which helps pretty much as a beginner.

I referred David Levinthal paper as published http://assets.devx.com/goparallel/18027.pdf, it gives good idea to distinguish CPI & other cycles related to Cache misses, DTLB misses, Branch-MisPredictions, etc.

Also, would like to suggest reading "Intel Itanium Processor Reference Manual" as an information for Processor internals and VTune flow http://download.intel.com/design/Itanium2/manuals/25111003.pdf

I think both these are good stuffs to start working with VTune in depth.

~BR