GDB调试器在MPI中 [英] GDB debugger in MPI

问题描述

我只是不知道使用GDB运行多个进程的命令。以下行不通。

  r -np 64 ./a.out -gdb 
  

对不起，这看起来很简单。但是我没有找到有关使用gdb从MPI进行MPI调试的有用文档。 正如 OpenMPI文档，您可以通过 xterm 通过 mpirun

  mpirun -np  $  mpiexec 然后启动程序： 64 xterm -e gdb ./a.out 
  

这将打开64个窗口，每个窗口包含 gdb 会话。因为在每个终端中输入 run 会非常麻烦，所以你可以尝试



  mpirun -np 64 xterm -e gdb ./a.out -ex run 
  

然而，我强烈建议减少过程的数量，比如四个。


I just do not know the command to run multiple processes using GDB. The following does not work.

r -np 64 ./a.out -gdb

Sorry this may seem quite simple. But I did not find much useful document about debugging in MPI using gdb from the Internet.

解决方案

As stated in the OpenMPI documentation, you can start xterm through mpirun/mpiexec which then starts your program:

mpirun -np 64 xterm -e gdb ./a.out

This will open 64 windows, each containing a gdb session. As it will be quite cumbersome to enter run in each terminal, you could try

mpirun -np 64 xterm -e gdb ./a.out -ex run

However, I strongly recommend to reduce the number of processes used to, say, four.

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