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I want to do profiling for my parallel processing code that I have wrote using OpenMPI library. I am trying to use vampirtrace for this purpose. I compiled my code using command

vtcxx -vt:cxx mpic++ ../src/parallel_encode_nonBlocking.cpp -o parallel_encode_nonBlocking_trace.exe

and I am trying to run my code using following command to generate trace file,

mpirun -np 4 parallel_encode_nonBlocking_trace.exe  ducks.m2v ducks11.h264

here last 2 names are names of input and output files that are required by code. But after running code I am getting following errors,

/usr/bin/nm: '/home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad': No such file
/usr/bin/nm: 'MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe': No such file
VampirTrace: FATAL: Failed to execute /usr/bin/nm -B --demangle --line-numbers /home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe
Please set the environment variable VT_GNU_NM to the 'nm' command including command line switches which lists symbol/addresses of an object file in BSD-style or set VT_GNU_NMFILE to a pre-created symbol list file.
/usr/bin/nm: '/home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad': No such file
/usr/bin/nm: 'MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe': No such file
/usr/bin/nm: '/home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad': No such file
/usr/bin/nm: 'MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe': No such file
VampirTrace: FATAL: Failed to execute /usr/bin/nm -B --demangle --line-numbers /home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe
Please set the environment variable VT_GNU_NM to the 'nm' command including command line switches which lists symbol/addresses of an object file in BSD-style or set VT_GNU_NMFILE to a pre-created symbol list file.
/usr/bin/nm: VampirTrace: FATAL: Failed to execute /usr/bin/nm -B --demangle --line-numbers /home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe
Please set the environment variable VT_GNU_NM to the 'nm' command including command line switches which lists symbol/addresses of an object file in BSD-style or set VT_GNU_NMFILE to a pre-created symbol list file.
'/home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad': No such file
/usr/bin/nm: 'MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe': No such file
VampirTrace: FATAL: Failed to execute /usr/bin/nm -B --demangle --line-numbers /home/rishikesh/Videos/Documents/Rishikesh_MTP_data/Harshad MTP/MTP/encoder_experiments/ffmpeg_transcode/bin/parallel_encode_nonBlocking_trace.exe
Please set the environment variable VT_GNU_NM to the 'nm' command including command line switches which lists symbol/addresses of an object file in BSD-style or set VT_GNU_NMFILE to a pre-created symbol list file.
--------------------------------------------------------------------------
mpirun noticed that the job aborted, but has no info as to the process
that caused that situation.
--------------------------------------------------------------------------
Gilles
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rishi007bansod
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1 Answers1

1

There seems to be a bug in VampirTrace with spaces in the absolute path name to your application binary. To work around that you can either remove the space from the "Harshad MTP" directory, or manually execute

nm parallel_encode_nonBlocking_trace.exe > nm.file
export VT_GNU_NMFILE="$PWD/nm.file"

The error message is quite clear about that if you actually carefully read it.

Zulan
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