Calibrater performance enhancements: SS3
G. Moellenbrock
This target refers mainly to the CalTable write improvements which are required. However, I (finally) checked in an improvement to VisBuffer/VisEquation which improves solve performance for multi-channel datasets. In the VisBuffers used by the solver (correctedvb and corruptedvb), the relevant data is stored in visibility(), but as these VBs are filled, the modelVisibility() in corrupted contains the model data. After is is copied to visibility() (and optionally averaged), the modelVisibility() member was hanging around and being copied etc. Now, this member is deleted in both VBs before they are used in the core solver. I hope to consolidate the data/model VBs in to one VisBuffer in the near future, which will further reduce object copy expense in the core solver (this is less important and thus lower in priority than the CalTable write issues, though it will permit several generalizations in the calibrater tool, including making spline/poly work for dual polarization as well as other parameterized solvers).