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Beginner
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OMP: Warning #90:..

Hi,

Just downloaded and installed w_mkl_11.0.1.119.exe

After running the first test I get the - bundle of- :

OMP: Warning #90: ittnotify: Lookup of “__itt_<function>”
function in <installdir><redistlibpath>\pdbx.dll library failed.

Looking at the documentation, I see I have to ignore it. My question is how can I get rid of it?

(vs2010, win7 64bit ).

Thank you very much in advance,

P-

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Moderator
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at the first glance the work around of this problem you can see following this link: http://software.intel.com/en-us/forums/topic/285302

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Have you tried the environment variable KMP_WARNINGS=off ?  It should make the OpenMP RTL to not issue any warnings.

Regards,
Andrey

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Beginner
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Gennady, Andrey,

Thank you very much for your help

P-

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Beginner
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Andrey,

What do you mean by "environment variable KMP_WARNINGS=off" ?

I looked in my environment variables and there is no environment variable KMP_WARNINGS (win7, 64bit).

Is this a setting in vs2010 ? Should I do it programmatically ( I really hope no)

(the parallel debug trick to off failed to silense the omp warnings).

Thank you in advance,

P-

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New Contributor II
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You need to add environment variable KMP_WARNINGS youself. Alternatively call kmp_set_defaults("KMP_WARNINGS=0") if using Fortran

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Beginner
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Hi Andrew,

Thank you for coming back to me .

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Beginner
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Andrew,

It does not seem to work ! tried woith value off and with value 0. (restarted th vs2010).

Any other suggestion ?

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Beginner
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Also, using c++.

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I am sorry, there is a problem in the OpenMP RTL with this warning (it is issued before we turn the warnings off, so we cannot disable it at the moment).  We will work on the problem and hopefully solve it in the next release of the library.

- Andrey

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Beginner
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Thank you Andrey,

P-

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Employee
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Petros,

Could you please check what OpenMP library version you run your test with?

Set environment variable KMP_VERSION=1 and run your test. And see the output.

Thank you.

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Beginner
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Hi Olga,

I am really only using OpenMP through mkl. My (c++) program does not use openmp.

I am using intel c++ compiler 12.1 for win (7 64bit) with 64bit builds.

Will get back to you,

Thank you very much for your effort to help.

P-

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Beginner
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Hi Olga,

I inserted the env. variable you asked me to. Also inserted the KMP_WARNINGS=0 and disabled openMP support from my compiler (c++ intel 12.1 with c++0x enabled).

Still getting the warnings though..

I don't know if this helps but when I put the warnings as "off" (instead of off) I got the following additional message :

OMP: Hint: Use "0", "FALSE". ".F.", "off", "no" as false values, "1", "TRUE", ".T.", "on", "yes" as true values.
OMP: Warning #20: KMP_WARNINGS=""off"": Wrong value, boolean expected.
OMP: Hint: Use "0", "FALSE". ".F.", "off", "no" as false values, "1", "TRUE", ".T.", "on", "yes" as true values.
Intel(R) OMP Copyright (C) 1997-2011, Intel Corporation. All Rights Reserved.
Intel(R) OMP version: 5.0.20110606
Intel(R) OMP library type: performance
Intel(R) OMP link type: dynamic
Intel(R) OMP build time: 2011-06-07 02:07:15 UTC
Intel(R) OMP build compiler: Intel C++ Compiler 12.0
Intel(R) OMP alternative compiler support: yes
Intel(R) OMP API version: 3.0 (200805)
Intel(R) OMP tracefile support: no
Intel(R) OMP dynamic error checking: no
Intel(R) OMP helper thread support: yes
Intel(R) OMP thread affinity support: not used
Intel(R) OMP debugger support version: 1.1
Intel(R) OMP Intel(R) RML support: not using

Also, tried these as both user and system environment variables - just in case..

Thank you for your help,

Petros

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Valued Contributor II
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Hi Petros, Let me answer these questions: >>Is this a setting in vs2010 ? No. Visual Studios do not set any OpenMP environment variables. >>Should I do it programmatically ( I really hope no) You can do it programmatically, if it really needs to be done, and here is a small example in a C language: ... int iRetCode = _tputenv( _T("KMP_WARNINGS=off") ); if( iRetCode == 0 ) _tprintf( _T("KMP_WARNINGS=%s\n"), _tgetenv( _T("KMP_WARNINGS") ) ); else _tprintf( _T("Error: Failed to Set Environment Variable KMP_WARNINGS\n") ); ...
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Employee
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Hi Petros,

It looks like you are using a quite old compiler and old OpenMP library. It is dated

Intel(R) OMP version: 5.0.20110606

The problem with Warning #90 was fixed in the OpenMP library version 20111108. It is available in the Compiler 12.1 Update 8 (Intel(R) C++ Composer XE 2011 Update 8).

Regarding the Warning #20 and hints I would say this is expected behavior because you inserted extra quotes in the variable value.

The correct syntax is

KMP_WARNINGS=off

KMP_WARNINGS=0

etc. ... without quotes.

Hope it helps you.

Thank you.

 

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Beginner
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Olga,

But I amnotusing openMP with my compiler in my c++ program - the flag is unchecked. I thought these messages are coming from the mkl openMP library. This is the command line from vs2010 :

/Zi /nologo /W3 /MP /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_SCL_SECURE_NO_WARNINGS" /D "_CRT_SECURE_NO_WARNINGS" /D "BOOST_UBLAS_SHALLOW_ARRAY_ADAPTOR" /D "_UNICODE" /D "UNICODE" /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Qstd=c++0x /Fp"x64\Debug\test_libRandom.pch" /Fa"x64\Debug\" /Fo"x64\Debug\" /Fd"x64\Debug\vc100.pdb"

Sergey,

Thank you, had figured out meanwhile.

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Employee
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Petros Mamales wrote:

I amnotusing openMP with my compiler in my c++ program - the flag is unchecked. I thought these messages are coming from the mkl openMP library.

Yes, the MKL uses the OpenMP library. If you installed the MKL as standalone but not as a part of the Composer then the MKL should have installed libraries it depends on (like OpenMP library). MKL 11.0 installation package should contain the right version of the OpenMP library that has the fix for the warnings. But it looks like when your test calls the MKL it finds some old version of the OpenMP library (that was most likely installed with the old version of the compiler).

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Beginner
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All this is very confusing. Especially in light of the suggestion I was given in the forum, at an earlier question, to not mix the mkl omp library and the c++ provided one.

I installed mkl 11 as part of my mkl support's update ( my composer support has expired ). I really don't understand what I have to do. Is there a way to reinstall mkl and bypass the libraries that it finds from the composer installation ?

It is really annoying, what is happenning, especially when you try to debug.

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Valued Contributor II
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>>...It is really annoying, what is happenning, especially when you try to debug. Petros, When you're debugging in a Visual Studio please take a look at Output Window and find a section with a list of loaded DLLs ( they are always with full paths ). That verification could help you to understand what Intel DLLs are actually loaded and used by your application. Let me know if you need a small example on how it looks like, or post everything from Output Window ( when debugging! ) for our review.
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