Category: Uncategorized
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Presented at the 2024 Cooperative Institute for Research to Operations in Hydrology (CIROH) Developers Conference (DevCon)
I presented “Memory Efficiency in Parallel Computation of Continental-Scale Hydrologic Parameters” and “Open-Source Hydrology Using GRASS GIS” at the 2024 Cooperative Institute for Research to Operations in Hydrology (CIROH) Developers Conference (DevCon) on May 29, 2024.
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Introducing the Memory-Efficient I/O-Improved Drainage Analysis System (MIDAS)
I’m introducing the Memory-Efficient I/O-Improved Drainage Analysis System (MIDAS). It consists of various modules for hydrologic parameter calculations including flow accumulation, watershed delineation, longest flow path, and flow length. More modules will be added later. Please try its early release of Windows binaries at https://github.com/HuidaeCho/midas.
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Memory-efficient flow length calculation using OpenMP (ongoing)
I just started this GIS algorithm research for fast memory-efficient flow length calculation using OpenMP. Try it yourself: https://github.com/HuidaeCho/midas.
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Accumulation of a float constant of sqrt(), the function itself, and its direct multiplication
Clone this source code at https://github.com/HuidaeCho/fperror and try it.
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Presented at the 2024 New Mexico Transportation and Construction Conference (2024 NM TransCon)
CLAWRIM presented their research at the 2024 New Mexico Transportation and Construction Conference (2024 NM TransCon) April 17-19, 2024. Asad talked about “Enhancing Culvert Capacity Assessment Through Regression Analysis of DEM Data” on April 18, 2024 10am-11:30am and I presented “Hydrologic Modeling and CAMP (Culvert Asset Management Program)” on April 19, 2024 8am-9:30am.
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Gave a talk on parallel computation of hydrologic parameters to the HEC Hydrology and Statistics Division Knowledge Transfer Sessions
I gave a talk on “Computation of Hydrologic Parameters for Continental-Scale Modeling” to the United States Army Corps of Engineers (USACE) Hydrologic Engineering Center Hydrologic Modeling System (HEC-HMS) team. On April 8, 2024, the HEC-HMS team invited me to give a talk on parallel computation of hydrologic parameters in their Hydrology and Statistics Division Knowledge…
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Demonstration of a floating-point error in double-precision accumulation
Clone this source code at https://github.com/HuidaeCho/fperror and try it.
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Presented at the American Water Resources Association (AWRA) 2024 Geospatial Water Technology Conference (GWTC)
I presented “Single-Node Multi-Threaded Computation of Hydrologic Parameters for Continental-Scale Modeling” at AWRA 2024 GWTC.
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Presented at the American Geophysical Union (AGU) 2023 Annual Meeting
I presented “Leveraging Single-Node Multi-Threaded Computing Power for Rapid Flow Accumulation for Cloud-Based Hydrologic Modeling” at AGU 2023.
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Presented and chaired at the Free and Open Source Software for Geospatial (FOSS4G) Asia 2023 Conference
I presented the “State of GRASS GIS: 40 Years Strong and Counting” at FOSS4G Asia 2023. On November 30, 2023, I presented “Memory-Efficient Flow Accumulation Using OpenMP Parallelization” and chaired two Academic Tracks at FOSS4G Asia 2023.