software_development_overview.md



Software Development and Tools
This section provides you with the basic knowledge and tools to get you out of trouble. It will tell
you:

How to compile your code
Using mathematical libraries
Find caveats and hidden errors in application codes
Handle debuggers
Follow system calls and interrupts
Understand the relationship between correct code and performance

Some hints that are helpful:

Stick to standards wherever possible, e.g. use the -std flag
for GNU and Intel C/C++ compilers. Computers are short living
creatures, migrating between platforms can be painful. In addition,
running your code on different platforms greatly increases the
reliably. You will find many bugs on one platform that never will be
revealed on another.
Before and during performance tuning: Make sure that your code
delivers the correct results.

Some questions you should ask yourself:

Given that a code is parallel, are the results independent from the
numbers of threads or processes?
Have you ever run your Fortran code with array bound and subroutine
argument checking (the -check all and -traceback flags
for the Intel compilers)?
Have you checked that your code is not causing floating point
exceptions?
Does your code work with a different link order of objects?
Have you made any assumptions regarding storage of data objects in
memory?

Subsections:

Compilers

Debugging Tools


Debuggers (GDB, Allinea DDT, Totalview)

Tools to detect MPI usage errors (MUST)


PerformanceTools.md: Score-P, Vampir, Papi Library

Libraries

Intel Tools Seminar [Oct. 2013]

[TU-Dresden_Intel_Multithreading_Methodologies.pdf]todo %ATTACHURL%/TU-Dresden_Intel_Multithreading_Methodologies.pdf:
Intel Multithreading Methodologies
[TU-Dresden_Advisor_XE.pdf] todo %ATTACHURL%/TU-Dresden_Advisor_XE.pdf):
Intel Advisor XE - Threading prototyping tool for software
architects
[TU-Dresden_Inspector_XE.pdf] todo %ATTACHURL%/TU-Dresden_Inspector_XE.pdf):
Inspector XE - Memory-, Thread-, Pointer-Checker, Debugger
[TU-Dresden_Intel_Composer_XE.pdf] todo %ATTACHURL%/TU-Dresden_Intel_Composer_XE.pdf):
Intel Composer - Compilers, Libraries