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By default, the pipeline will run to produces images that encompass the whole field of view and at the nominal spatial and spectral resolution offered by the data. This avoids ignoring some information, but unfortunately maximizes data sizes and compute time.
The pipeline run time is heavily dependent on the size of images, and (obviously), the size of its output even more. It is thus highly recommended to define a proper map size, as well as proper imaging arguments, before running the pipeline. This involves variables MAP_FIELD, MAP_CELL and MAP_ROBUST.
Similarly, the pipeline run time and required space scales quasi-linearly with the number of output channels. It is thus also strongly recommended to specify the proper values of the velocity coverage in All%Range.
To do so, it is best to select a representative UV data set and explore it interactively, in order to define the best compromise (smallest possible field of view given the source size, largest acceptable cell size to avoid undersampling, appropriate velocity resolution and coverage).
The REPORT SUMMARY command will suggest you some possibilities for the imaging parameters, list a summary of the spectral coverage, and explore the feasibility of self-calibration based on the currently specified integration times (see CHECK and SELF steps in Sec.13.3.7-13.3.9 for details) using continuum data. It uses the PIPELINE EXPLORE step to evaluate image sizes and weighting choice, see Sec.13.3.6. Results can be found in the REPORT/summary.pdf file. You may adjust the weighting parameters MAP_ROBUST and/or Self-calibration parameters and re-run the REPORT SUMMARY if needed.
The REPORT COVERAGE command will produce a detailed view of the spectral coverage, using all spectral windows and the spectral lines from the user-specified CATALOG. Plots will be found in the REPORT/coverage.pdf file.