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UID:pretalx-foss4g-asia-2023-ERLPKA@talks.osgeo.org
DTSTART;TZID=KST:20231130T143000
DTEND;TZID=KST:20231130T145000
DESCRIPTION:This talk introduces a new open-source fast Memory-Efficient Fl
 ow Accumulation (MEFA) algorithm using OpenMP parallelization. Flow accumu
 lation is one of the most important parameters for any hydrologic and/or e
 nvironmental analyses. There have been many studies that focus on the impr
 ovement of its computational efficiency using OpenMP\, MPI\, and CUDA\, bu
 t most of benchmark algorithms are not memory-efficient in terms of the nu
 mber of write operations and the amount of bytes read/written. This memory
 -inefficient nature of those algorithms deteriorates their computational p
 erformance during parallel processing of the input flow direction matrix. 
 The new MEFA algorithm has reduced its memory requirements in both writes 
 and bytes by eliminating a need for intermediate output matrices and writi
 ng its final value to each cell only once deterministically. The new algor
 ithm performed 45% and 19% faster than its OpenMP and MPI benchmark algori
 thms\, respectively\, using 20% less memory asymptotically.
DTSTAMP:20260612T233424Z
LOCATION:Seoul Archive
SUMMARY:Memory-Efficient Flow Accumulation Using OpenMP Parallelization - H
 uidae Cho
URL:https://talks.osgeo.org/foss4g-asia-2023/talk/ERLPKA/
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UID:pretalx-foss4g-asia-2023-38VQPY@talks.osgeo.org
DTSTART;TZID=KST:20231201T110000
DTEND;TZID=KST:20231201T112000
DESCRIPTION:The GRASS GIS community celebrated its 40th birthday this past 
 summer! Its version 8.3 provides more than 360 changes compared to the 8.2
  release\, and it comes with many fixes and improvements in its modules an
 d graphical user interface. The single-window layout is now mature and pro
 vided as the default UI. We have extensively cleaned up the C/C++ code by 
 adopting the Clang format and fixing almost all compiler warnings. Not onl
 y that\, we started modernizing the build system using CMake for cross-pla
 tform build automation\, testing\, and packaging. We are also converting t
 he HTML manuals to easier-to-maintain Markdown/mkdocs to collect more user
  contributions. Last but not least\, for internalization efforts\, we have
  migrated our translation platform from Transifex to Weblate\, which autom
 atically creates pull requests with new translations. As always\, we welco
 me new contributors for development\, documentation\, and translation!
DTSTAMP:20260612T233424Z
LOCATION:Circle Room
SUMMARY:State of GRASS GIS: 40 Years Strong and Counting - Huidae Cho
URL:https://talks.osgeo.org/foss4g-asia-2023/talk/38VQPY/
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