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Version 1.9 Build 643

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Targets

Cluster Linux and IRIX build maintenance

Continued maintenance of the existing NCSA/NRAO builds under IRIX and on the AHPCC Linux cluster. (WY, H, 3 wk, DM, H, 3 wk).

Key project processing

Processing of five key projects (including at least one each of mosaiced, wide-field or large spectral line). Candidates include the existing M33 dataset (Westpfahl), TXCam (Kemball), and a selection of low-frequency VLA projects in A-configuration. Generation of user liaison documentation and user support at NCSA. (RP, H, 2 wk, AS, H, 2 wk, WY, H, 2 wk).

Complete multi-field parallelization

Complete implementation of a prototype parallelization for mosaiced or wide-field imaging. Candidates include field- or facet-based gridding, model prediction or residual image computation. (KG, H, 4 wk).

Parallelization of other deconvolution methods

Extend the Clark CLEAN parallelization to other deconvolution algorithms. (KG, H, 4 wk).

Initial parallel I/O implementation

Implementation of multi-process I/O on the same file, multi-iterator access in a single process, and ROMIO asynchronous I/O using MPI-2. Evaluation of performance in these cases. (WY, H, 4 wk).

Complete NT migration document

Combine work by P. Cortes in NT migration to formalize incorporation of these changes in the main code distribution (WY, H, 1 wk, PC, H, 3 wk).

Modify test suite for large problem size

Modify the current bigimagertest to use simulated data. (DM, H, 1 wk).

Cluster parallelization

Expand evaluation of parallelization methods specific to cluster architectures, with a specific focus on Linux systems. Port AIPS++ to IA64 when available. (PC, H, 7 wk)