Hello
How to strace all processes of mpi parallel job, started with mpiexec (mpich2, linux)?
-o will mess outputs from different processes
A:
You may want to try STAT (Stack Trace Analysis Tool). Check out the STAT Homepage. It will give you a high level overview of your process behavior, and works especially well in the case of a hung process.
Jharrod
2010-06-07 16:01:16
sorry. this project is interesting, but i can't run it on target platform (StackWalker API is not ported, but strace is).
osgx
2010-06-08 09:01:10
What platform is it? Try using gcc 4.1.2, we've had problems compiling with newer versions (StackWalker specifically).
Jharrod
2010-06-08 15:53:10
+1
A:
Create a wrapper around your program, which will be launched by mpiexec. Something like:
#!/bin/sh
LOGFILE="strace-$(hostname).$$"
exec strace -o"$LOGFILE" my_mpi_program
Roman Cheplyaka
2010-07-03 11:05:11
It's ok, file names still will be different due to $$ part -- it is the PID of the current process.
Roman Cheplyaka
2010-07-04 08:12:22