TOTALVIEW Majdi Baddourah June 4, 2002 NERSC

Objective How to use totalview MPI codes OpenMp Codes

TOTALVIEW Debugging tool Supported by ETNUS Works very well most of the time Line mode and x-windows mode Used to debug FORTRAN and C

Usage module load totalview mpxlf –g main.f totalview poe –a./a.out –nodes 2 –procs 32

TOTALVIEW Window

Program Window

File Options

Process Options

Action Point Options

Tools Options

POE Window

Source Code Window

Set Breakpoint right mouse click left mouse click

Breakpoint options

Start Exectution left mouse click

See Other Processors left mouse click

Setting Evaluation Function

right mouse click

Evaluation Function

Evaluation Functions

right mouse click

Variable Value

Looking at the vector x

Looking at a Slice of an Array

Looking at Large Arrays parameter(n= ) real*8 a(n) do i = 1, n a(i) = float(i) enddo write(*,*)' a(',n,')=',a(n) stop end You can view the content of the variable A without problems. You can not look at statistics or visualize the variable.

Message Queue

C Program

Structure Value

Looking at Structure

Watch Point

Unconditional Watchpoint

Checking the Value

Attaching a Running Job Run Totalview using this command totalview & poe./a.out –nodes 2 –procs 32 Click on the poe job

Attaching a Job

Running the Job Click Go

Detaching a Job Click detach

OpenMp setenv OMP_NUM_THREADS 4 module load totalview

Compile xlf90_r -o a.out -g -qfixed -qsmp=omp -qstrict nowait.f -bmaxstack:0x Dive on J

Compile with noopt xlf90_r -o a.out -qfixed -qsmp=omp -g -qstrict nowait.f -qsmp=noopt -bmaxstack:0x

OpenMp right mouse click Click go

Threads 3 Dive on b

Shared variables

OpenMp Dive on j

Private Variables

TOTALVIEW X-Resources totalview*searchPath:/usr/common/homes/m/majdi/NETCDF4/src/libsrc, \ /usr/common/homes/m/majdi/NETCDF4/src/fortran, \ /usr/common/homes/m/majdi/NETCDF4/src/f90, \ /usr/common/homes/m/majdi/NETCDF4/src, \ /scratch/scratchdirs/majdi, /scratch/scratchdirs/majdi/NimRot