topic There are check boxes for in Analyzers

no call stack information #2

Marián__VooDooMan__M — Sat, 12 Apr 2014 18:00:29 GMT

Greetings,

I am running i7 Haswell architecture and I don't see "call stack information" in analysis as I had for Core2 in VTune.

Am I doing something wrong, or this architecture simply doesn't support this in hardware counters?

My config: Win 8.1 x64, project c++0x x64, ICC 14 SP1 update 2, VTune the latest to date.

Bernard — Sun, 13 Apr 2014 07:09:30 GMT

Maybe your code has inlined functions?

Quote:iliyapolak wrote:

Marián__VooDooMan__M — Sun, 13 Apr 2014 09:30:55 GMT

iliyapolak wrote:

Maybe your code has inlined functions?

Yes, indeed, and IPO is AFAIK inline-ing functions where it is possible.

Though ICC will NOT inline

Marián__VooDooMan__M — Sun, 13 Apr 2014 09:33:00 GMT

Though ICC will NOT inline functions if there are inline specifications, when the inlineing will be counter-productive.

I mean the case when I use

Marián__VooDooMan__M — Sun, 13 Apr 2014 09:43:28 GMT

I mean the case when I use VTuune inside of MSVC 2013 integration. I get for my Haswell few analysis, but in GUI there are no "collect stacks",

I mean before running the

Marián__VooDooMan__M — Sun, 13 Apr 2014 09:51:15 GMT

I mean before running the program.

Bernard — Sun, 13 Apr 2014 14:51:55 GMT

Try to disable optimization and rerun the VTune.

I do not think if resolving function calls could be dependend on specifc CPU counters.

My comments are:

Peter_W_Intel — Mon, 14 Apr 2014 03:34:36 GMT

My comments are:

1. If you are using general-exploration analysis and want to see call stack info, you have to add option "-knob enable-stack-collect=true". This is not a default enabled option.

2. You can use optimization, but read this article.

@Peter Wang (Intel)

Marián__VooDooMan__M — Mon, 14 Apr 2014 06:28:00 GMT

@Peter Wang (Intel)

re 1. ICC is complaining about "/Qknob enable-stack-collect=true" being obsolete and will be removed in future

re 2. I need IPO optimization

The problem is, when I was on Core2 platform, in IDE's VTune GUI I could hit check box "collect stacks". Now I am on i7 Haswell, and I cannot do such thing. I worked around the problem by copying "advanced hostspots" to "custom analysis", and then I have option to collect stack. Inline'd functions are okay for me (when collecting stack informations).

But this is a bit tricky, I wish I could do it in IDE easily, without creating new custom analysis.

Maybe a feature request...?

Marián__VooDooMan__M — Mon, 14 Apr 2014 06:30:12 GMT

Maybe a feature request...?

There are check boxes for

Peter_W_Intel — Mon, 14 Apr 2014 07:16:27 GMT

There are check boxes for "collect stack" on GUI, my box is Haswell processor. Are you using latest VTune Amplifier XE 2013 Update 16?

nevermind, I have just

Marián__VooDooMan__M — Mon, 14 Apr 2014 07:53:31 GMT

nevermind, I have just noticed it collects stack by default.

Another problem is, "advanced hotspots" analysis stops collecting hardware events after exactly 70 seconds. In the GUI the time counter stops increasing and button to mark timeline is inactive. When the process exits, there is only first 70 seconds to examine.

Collecting stack is not

Peter_W_Intel — Mon, 14 Apr 2014 08:25:56 GMT

Collecting stack is not default option, when you start a new analysis, for example, advanced-hotspots.

Collector will stop if you set Duration. Otherwise Collector will stop only the process exits.

But I do think the option is

David_A_Intel1 — Mon, 14 Apr 2014 16:21:00 GMT

But I do think the option is "sticky." Once you select stacks in Advanced Hotspots and run a collection, the next time you open up the Advanced Hotspots analysis type, stacks will be selected. FWIW ;)

Quote:MrAnderson (Intel)

Marián__VooDooMan__M — Mon, 27 Apr 2015 21:50:28 GMT

MrAnderson (Intel) wrote:

But I do think the option is "sticky." Once you select stacks in Advanced Hotspots and run a collection, the next time you open up the Advanced Hotspots analysis type, stacks will be selected. FWIW ;)

But where I can enable such option? I always do "Advanced Hotspots", whether I do or not optimization/ilining, I get an error without stack information.

PS:: I am attaching VTune conf.459509 459509

Using option "-knob

Peter_W_Intel — Tue, 28 Apr 2015 06:13:34 GMT

Using option "-knob collection-detail=stack-sampling" for advanced-hotspots analysis.

Using option "-g -O0" to disable inline function, or using "-O2 -g -inline-debug-info" enables inline function and keep symbol info (function name in report).