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Debugging using Totalview

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Running this profiler requires remote X acces. For this, familiarize yourself to this article. (Remote display on Cluster nodes).

 

Quicksteps:

  1. compile your program using debug symbols
[alexandru.herisanu@opteron-wn02 app_profiling]$ gcc -fopenmp -O3 -g -o app_lab4_gcc openmp_stack_quicksort.c
  1. connect to fep using NX client and allow remote usage
  2. setup necesarry env. variables (DISPLAY, FLEXLM etc.)
  3. run totalview
Using modulefiles

[TBA]

 

Without modulefiles

Get your display screen by connecting via NX Client, allow remote display connections:

[alexandru.herisanu@fep-53-3 ~]$ echo $DISPLAY
:1000.0
[alexandru.herisanu@fep-53-3 ~]$ xhost +
access control disabled, clients can connect from any host
[alexandru.herisanu@fep-53-3 ~]$

 

Now, your display variable will be fep-53-3.grid.pub.ro:1000.0

Run the following script (using bash or csh, this script is in bash. In this case we wanted to run this only on quad-wn16)

 

[alexandru.herisanu@fep-53-3 app_profiling]$ qsub -q This email address is being protected from spambots. You need JavaScript enabled to view it. -cwd
module load debuggers/totalview-8.4.1-7
setenv DISPLAY fep-53-3.grid.pub.ro:1000.0
totalview
Your job 10 ("STDIN") has been submitted

 

!! Using -S /bin/bash does not seem to work here. it will not find module program !!

 

Done.

 

Line 1: setup the environment for totalview. Modulefile is:  debuggers/totalview-8.4.1-7

Line 2: set remote display location

Line 3: run totalview

 

Select your program and it will work like a regular debugger.

 

totalview screenshot