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[PerfSuite-users] problem with library
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From: Ryszard J. <rys...@ce...> - 2006-03-17 11:30:24
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Hi,
I am using PerfSuite 0.6.1with perfctr-2.6.19 and with papi-3.2.1. I am =
trying to profiling the Atlas simulation at CERN. It seems to work, but =
I got stuck in one point. I run the profiling job by the command:
export LD_PRELOAD=3Dsome libraries
psrun -o output_file -e -p -c papi_cycles.xml python simulation.py =
joboptions.py
export LD_PRELOAD=3D""
In the output file from psprocess I can find most of libraries apart =
from one (geant4 G4) which I expected to find. This library is not =
inluded in the LD_PRELOAD variable. Functions from this library are very =
frequently and hard used.
I guess, that there are questions marks instead of the missed library in =
the report. I have attached a small part from my raport.
Profile Information
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Class : PAPI
Event : PAPI_TOT_CYC (Total cycles)
Period : 50000
Samples : 18835979
Domain : user
Run Time : 3759.06 (seconds)
Min Self % : (all)
Module Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % Module
4338437 23.03% 23.03% /usr/lib/libstdc++.so.5.0.3
4118852 21.87% 44.90% /lib/tls/libc-2.3.2.so
3633690 19.29% 64.19% /lib/tls/libm-2.3.2.so
1575474 8.36% 72.56% =
/afs/cern.ch/sw/lcg/external/clhep/1.9.2.1/slc3_ia32_gcc323/lib/libCLHEP-=
Random-1.9.2.1.so
..... =20
File Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % File
9508883 50.48% 50.48% ?
4893321 25.98% 76.46% ??
1212717 6.44% 82.90% ../../../CLHEP/Random/src/JamesRandom.cc
.....
Function Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % Function
4893321 25.98% 25.98% ??
1212677 6.44% 32.42% CLHEP::HepJamesRandom::flat()=20
....
Function:File:Line Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % Function:File:Line
4893321 25.98% 25.98% ??:??:0
651638 3.46% 29.44% _int_malloc:?:0
592882 3.15% 32.59% atan2:?:0
462413 2.45% 35.04% __ieee754_log:?:0=20
As you can see at module summary 65% is reported as libstdc++, libc, =
libm and in function summary. At the file summary 75% is unknown and at =
function summary ~26% is unknown.=20
Do you have any ideas where the problem could be?
Maybe this information could help. During profiling other small =
programs, I saw the different behaviour between the application which is =
dynamically linked with share libraries, and between one which uses the =
dynamic loading of shared libraries. It is worth to mention, that both =
applications run the same time. During running the application with the =
dymamic loading the only 11 samples are collected, compared to 381998 =
for the dynamically linked application. Below there are two small parts =
of reports from profiling two applications which take advantage of the =
same library:
1. Dynamically linked application
Profile Information
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Class : PAPI
Event : PAPI_TOT_CYC (Total cycles)
Period : 50000
Samples : 381998
Domain : user
Run Time : 22.02 (seconds)
Min Self % : (all)
Module Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % Module
272392 71.31% 71.31% =
/afs/cern.ch/user/o/oplaatl3/testdll/libhello2.so.1
109600 28.69% 100.00% =
/afs/cern.ch/user/o/oplaatl3/testdll/libhello1.so.1
2 0.00% 100.00% /lib/tls/libc-2.3.2.so
2 0.00% 100.00% /lib/ld-2.3.2.so
1 0.00% 100.00% /usr/local/papi/lib/libpapi.so
1 0.00% 100.00% /usr/local/perfsuite/lib/libpsrun.so.0.0.0
File Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % File
360739 94.43% 94.43% ?
21259 5.57% 100.00% ??
Function Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % Function
194343 50.88% 50.88% sum
97454 25.51% 76.39% hello
68937 18.05% 94.43% count
21259 5.57% 100.00% ??
1 0.00% 100.00% _IO_default_xsputn
1 0.00% 100.00% strlen
1 0.00% 100.00% _fini
1 0.00% 100.00% strcmp
1 0.00% 100.00% _dl_lookup_versioned_symbol
=20
2. Application with the dynamic loading
Profile Information
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Class : PAPI
Event : PAPI_TOT_CYC (Total cycles)
Period : 50000
Samples : 11
Domain : user
Run Time : 21.93 (seconds)
Min Self % : (all)
Module Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % Module
6 54.55% 54.55% /lib/ld-2.3.2.so
4 36.36% 90.91% /lib/tls/libc-2.3.2.so
1 9.09% 100.00% /lib/libdl-2.3.2.so
File Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % File
10 90.91% 90.91% ?
1 9.09% 100.00% ??
Function Summary
-------------------------------------------------------------------------=
-------
Samples Self % Total % Function
2 18.18% 18.18% strcmp
1 9.09% 27.27% strlen
1 9.09% 36.36% _dl_close
1 9.09% 45.45% do_lookup
1 9.09% 54.55% fixup
1 9.09% 63.64% rtld_lock_default_lock_recursive
1 9.09% 72.73% _setjmp
1 9.09% 81.82% ??
1 9.09% 90.91% dl_open_worker
1 9.09% 100.00% __write_nocancel=20
Thank you in advance for any help and comments.
Best regards,
Ryszard.
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