Phylanx Report: February 2018

The sixth month of work focused on work in the following areas:

• Performance analysis
• Refactoring
• Debugging features
• Jupyter Notebook Integration
• Singularity Integration
• Visualization

Organizational activities and results

• Weekly group-meeting, minutes:
  • February 1st: https://drive.google.com/open?id=1JzK41wrCVqSnL8kmd9-tpns5MW43urGB
  • February 8th: https://drive.google.com/open?id=1D8ymGRcJ3EZ75OoznZXAmnAlMVr0379C
  • February 15th: https://drive.google.com/open?id=1AARODZqrFdOPxtH9s7Xw2pfW9iYefXXZ
  • February 22nd: https://drive.google.com/open?id=1rLF1T2eIoWb6auVc8AaTL4UVBTeGfGpH
• Phylanx Seminars
  • http://phylanx.stellar-group.org/index.php/2018/02/15/phylanx-seminar-physl/
  • http://phylanx.stellar-group.org/index.php/2018/02/27/phylanx-seminar-phyfun/

Development activities and results

• Algorithms Highlighted: Logistic Regression, ALS
  • First Python version of ALS implemented
  • Initial @Phylanx (decorator) ports of:
    • K-Means
    • T-sne
    • PCA
• Performance Counters – Created lra_csv_instrumented example to demonstrate the instrumentation of performance counters in Phylanx
• Created a PhySL interpreter
• Added HDF5 Read/Write primitives
• Improved error messages
  • Provide line and column information
  • Added detailed error messages
• Working instance of PhyFun front end working in a Jupyter Notebook
  • https://github.com/STEllAR-GROUP/phylanx/wiki/Jupyter-Notebook
• Created visualization of execution tree
  • Shows dependencies between primitives
  • Displays information gathered by performance counters
    • Name of each primitive instance
    • Average time per primitive instance
    • Direct vs Plain actions

Repository activity January 28th – February 28th:

Code statistics

-------------------------------------------------------------------------------
Language                     files          blank        comment           code
-------------------------------------------------------------------------------
C++                            197           8597           2790          38988
C/C++ Header                   137           2476           1892           9610
CMake                           61            593            479           2334
Python                          28            512            347           1520
YAML                             2             19             11             55
Dockerfile                       1              2              4             32
Markdown                         1             11              0             29
INI                              1              0              0              8
-------------------------------------------------------------------------------
SUM:                           428          12210           5523          52576
-------------------------------------------------------------------------------

Impact on other projects

• Vcpkg
  • Pull Request: Using vcpkg_from_github() for HPX (PR #2830)
  • Highfive library does not install cmake files (Issue #2715)
  • Ticket: `vcpkg install boost:x64-windows` does not install the pdb files (Issue #2705)
• Blaze Ticket: Views can be initialized from rvalues (Issue #159)
• HighFive ticket: dataspace.getDimension() for zero-dimensional data-space will cause out-of-bounds index (Issue #98)
• HPX Pull Requests:
  • Making sure resource partitioner is not accessed if its not valid (PR #3202)
  • Fixing optional::swap (PR #3201)
  • Optionally disable printing of diagnostics during terminate (PR #3188)
  • Fixing the handling of quoted command line arguments (PR #3160)