The DiFX Software Correlator at IRA R I IRA-INAF /
The DiFX Software Correlator at IRA R I IRA-INAF /
The DiFX Software Correlator at IRA R I IRA-INAF /
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5.4.3 mpifxcorr.py<br />
mpifxcorr.py runs some sanity checks on the input files and output files,<br />
calcul<strong>at</strong>es the correct number of processes and launches the MPI job.<br />
5.5 Integr<strong>at</strong>ion of the various tools<br />
We then require some way to tie all these separ<strong>at</strong>e software tools together.<br />
We also want to give the user the ability to autom<strong>at</strong>e and customise the<br />
correl<strong>at</strong>ion process using a scripting language.<br />
5.5.1 correl<strong>at</strong>or_defaults.py and observ<strong>at</strong>ion.py<br />
<strong>The</strong> correl<strong>at</strong>or_defaults file contains default values for various parameters<br />
which are expected to remain the same across all correl<strong>at</strong>ions.<br />
observ<strong>at</strong>ion.py is placed in the correl<strong>at</strong>ion directory (i.e. the directory<br />
which contains all of the input and output files). It can be used to set<br />
values specific to the individual correl<strong>at</strong>ion.<br />
5.5.2 pydifx.py<br />
A simple python class pydifx has been written which provides a simple<br />
framework for scripting correl<strong>at</strong>ions in python. By writing a simple script<br />
it is simple to carry out the following oper<strong>at</strong>ions:<br />
• Run any of the tools above.<br />
• Edit the input files.<br />
In addition, all the normal python functions are present for renaming/moving<br />
files etc. aips can also be called (via ParselTongue [25])<br />
from the same script. This is particularly useful for debugging and<br />
benchmarking. An example script is given in appendix C.<br />
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