[GRASS-dev] [SoC] GSoC 2021 - Parallelization of raster modules for GRASS GIS

Aaron Saw Min Sern aaronsms at u.nus.edu
Sun Jun 13 03:42:26 PDT 2021

Hi everyone,

Week 1 has concluded, and this is my report for this week.

1) What did I get done this week?


  *   Updated Makefile to include OpenMP dependencies
  *   Wrote multi-threaded test cases to ensure consistency of the program
  *   Wrote benchmarking script to measure speedup
  *   Implemented parallel support
  *   Drafted the PR of abovementioned changes [1]


  *   Investigated Segment library to support random access and write operations

2) What do I plan on doing next week?

The goal is to come out with a design for output-based modules. The next step is to finish the implementation for r.neighbor. Furthermore, I plan to investigate the thread-safety of Raster3D module for pthread implementation of r.mapcalc.

3) Am I blocked on anything?

No, it has been good so far, but I hope to improve on my pace.

[1] https://github.com/OSGeo/grass/pull/1634<https://github.com/OSGeo/grass/pull/1634/files>

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