MPICH

MPICH

Here's how to use MemoryScape when launching MPICH MPI codes from the command line.

1 You must link your parallel application with MemoryScape’s agent as described in “Linking Your Application With the Agent”. On most Linux x86 systems, you’ll type:

mpicc -g test.o -o test -Lpath -ltvheap -Wl,-rpath,path

2 Start TotalView using the -tv command-line option to the mpirun script in the usual way. For example:

mpirun -tv mpirun-args test args

TotalView will start up on the rank 0 process.

3 Because you will have linked in MemoryScape’s agent, memory debugging is automatically selected in your rank 0 process.

4 If you need to modify the memory debugging options, you should do it now in MemoryScape.

5 Run the rank 0 process.

6 Select Debug > Open MemoryScape from the menu to open MemoryScape to examine your memory usage.