Thank you so much for your hint!
I'm going to prepare a version for OpenCL as soon as I can. I had it on
hold for a few years, but I think it wasn't too difficult. Easier than
CUDA. Also, now I have the help of ChatGPT :)
El 18-4-23 a las 09:36, Andrew C Aitchison escribió:
On Tue, 18 Apr 2023, Luis Felipe Romero wrote:
Dear gdal-dev group members,
I hope this email finds you well. I am Luis Felipe Romero, a
researcher from the University of Malaga in Spain, and I am excited
to introduce myself to this community. My research focuses on
algorithms for digital elevation models (DEM), and in particular, the
development of algorithms for the calculation of the total viewshed.
Recently, my team has developed a highly efficient algorithm that can
calculate the total viewshed for a model of 2500x2500 points in just
4 seconds on a GPU or approximately 2 minutes on a 16-core CPU. Our
algorithm is written in C++, and we also have a version that utilizes
CUDA for GPU acceleration.
I had a conversation with Even Roualt about the possibility of
integrating our algorithm into GDAL. However, he informed me of the
incompatibilities between GDAL and CUDA, but encouraged me to share
my intentions with the group. Therefore, I would like to share our
Total Viewshed approach with the gdal-dev community.
I understand that the performance is not as great as CUDA,
but OpenCL support *is* available in GDAL.
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