ATNF VLBI Wiki

• Clock units in vex2difx
  • progress: confirmed even newest FS vex library has no support for sec/sec units
  • progress: vex2difx currently behaves ligitimately òÀÓ no changes required
• VDIF channel order
  • progress: complete! Documented that one cannot change to or from VDIF format with .v2d.
  • Check put in vex2difx to prevent this.
• Handle >5 EOPs correctly (at least remove the incorrect sliding average code)
  • progress: email sent to DAIP regarding AIPS handlingòÀæ
• SFXC-DiFX sensitivity question
  • progress: likely related to spectral independence and not a DiFX issue
• zoom band amplitudes
  • progress: complete!
• Fix errors caused by strideLength and xmacLength during wideband + zoom band
  • progress: stridelength = 0 òÆÒ automatic calculation
  • progress: xmacstride = 0 òÆÒ automatic calculation
• Update the pulsar documentation
  • progress: complete!
• Finalise the new (open-source) license (and repository?) Prepare a template that everyone can fill in.
  • progress: GPLv3 to be recommended

• Regression testing scripts (AD)
• Xcube support (at least one way of getting Xcube data into DiFX) (CP)
• Mark6 support (complete getting Mark6 data into DiFX) see difxmark6
• Finish/publish data generator for producing test datasets. (NP,ZMZ,ASIAA)
• vex2 support (relies on vex2 finalization and some support from field systems)
• DBBC3 support
  • progress: complete, but untested
• redirect old CIRA wiki to CSIRO wiki

• GPU acceleration of the DiFX core code
• Add project code to difx messages (JS)
• Add DiFX diagnostics
• Documentation
  • Putting doxygen of mpifxcorr source on a webserver (link to this from the DiFX wiki if completed)
• Maintain database of benchmarking results
  • at least the regression tests
  • Even better, using fake data also
• visplot (CP, JS)
• Investigate sampler stats monitoring (AD/WB/CP)
• subband distribution/parallelisation (with VDIF) (AD/CP)
  • replumbing/refactoring vex2difx setup
• Transition to using band centres instead of band edges (WB)
• Parallelised calc server / Efficiency gains in CALC (wait for difxcalc11, which has òÀÜnativeòÀÝ support and will be easier to parallelise)
• Cleanly separate data format and data source
• difx2vgos? Next generation geodetic output data format support
• A version of polarisation conversion code in the DiFX source codebase
• Option for zero-padded FFT

• evlbi
  • reconnection/long term drop-outs (CP)
  • reliability with UDP data (CP)
  • real-time delay/rate adjustment (CP)
• Store polynomial tau(l, m) generalized delay model in FITS (WB,JM)
• Mixed module and file list on one station
• Check the relative signs of 1-bit / 2-bit unpacking
• IF selection in difx2fits
• addZoomFreq in the SETUP section (applies to all antennas)
• Document Algorithms
  • monitoring, etc - (list of error codes) (AD)
• Still produce one FITS file even when there was a clock change during the correlation
• Refactoring the mpifxcorr/mk5daemon libraries and merging functionality
• Move to a compressed text format for pcal files
• Modernize sniffer
• cleanup of DiFX error messages (appropriate verbosity level everywhere)
• eVLBI gui
• Shifted FT (moving channel boundary to edge of band) (AD)
• DiFX2fits uv shifting in trunk (JM/AD)
• Pulsar predictor support in òÀÜpolycoòÀÝ
• Get rid of printing to screen in mark5access (change to be called and printed from elsewhere)
• Get Eric to improve AIPS PCAL (multi tone)

• Choose framework for unit testing. Implement test cases.
• Phased array
• Add per-IF phase polynomial in the calc file (and delay polynomial, too?)
• On-the-fly application of calibration (bandpasses etc) with appropriate accountability
• Space VLBI
  • Baseline dependent averaging
• Auditing / refactoring the amplitude scaling
• Restitching contiguous zoom bands into wider bands (e.g. for ALMA)

Old list from DIFX meeting in Bologna, Nov 2014

Old list from DIFX meeting in Korea, Oct 2013

Old list from DIFX meeting in ATNF, Oct 2012

Old list from DIFX meeting in Haystack, Oct 2011

Old list from DiFX meeting in Socorro, Oct 2010

Old list from DiFX meeting in Perth, Sep 2009

Old list from DiFX meeting in Bonn, Sep 2008

Old list (from DiFX meeting in Bonn, 13&14 Sep 2007)