TOTALVIEW Majdi Baddourah June 4, 2002 NERSC. Objective How to use totalview MPI codes OpenMp Codes.
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Transcript of TOTALVIEW Majdi Baddourah June 4, 2002 NERSC. Objective How to use totalview MPI codes OpenMp Codes.
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
Setting Evaluation Function
right mouse click
Evaluation Function
Evaluation Functions
Evaluation Functions
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=10 000 000)real*8 a(n)do i = 1, n a(i) = float(i)enddowrite(*,*)' 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
C Program
Structure Value
Looking at Structure
Watch Point
Unconditional Watchpoint
Checking the Value
Attaching a Running Job
Run Totalview using this commandtotalview &poe ./a.out –nodes 2 –procs 32Click 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:0x70000000
Dive on J
Compile with noopt
xlf90_r -o a.out -qfixed -qsmp=omp -g -qstrict nowait.f -qsmp=noopt -bmaxstack:0x70000000
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