在 Vampirtrace 中生成跟踪文件时出错

Question

我想对我使用 OpenMPI 库编写的并行处理代码进行分析。我正在尝试为此目的使用 vampirtrace。我使用命令编译了我的代码

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

我正在尝试使用以下命令运行我的代码以生成跟踪文件，

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

这里最后 2 个名称是代码所需的输入和输出文件的名称。但是在运行代码后，我遇到了以下错误，

/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.
--------------------------------------------------------------------------

Answer 1

VampirTrace 中似乎存在一个错误，您的应用程序二进制文件的绝对路径名中有空格。要解决这个问题，您可以从“Harshad MTP”目录中删除空间，或手动执行

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

如果你真的仔细阅读，错误信息就很清楚了。