http://www.k-wave.org/forum/topic/double-precision-in-gpu-binaries-based-simulation Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:27:51 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/double-precision-in-gpu-binaries-based-simulation#post-8400 Fri, 24 Dec 2021 05:17:13 +0000 Karthik Nagabhushana 8400@http://www.k-wave.org/forum/ <p>Got it. Thank you, Professor Treeby. </p> http://www.k-wave.org/forum/topic/double-precision-in-gpu-binaries-based-simulation#post-8389 Thu, 16 Dec 2021 21:34:59 +0000 Bradley Treeby 8389@http://www.k-wave.org/forum/ <p>No - the C++ binaries work in single precision only (the data cast options are not used when saving to disk). Actually, there are very few cases when computing in double precision is needed. The accuracy of most simulations will be limited by the accuracy of the PML, which is a few decimal points. </p> http://www.k-wave.org/forum/topic/double-precision-in-gpu-binaries-based-simulation#post-8388 Thu, 16 Dec 2021 19:50:13 +0000 Karthik Nagabhushana 8388@http://www.k-wave.org/forum/ <p>Hi, </p> <p>Is it possible to set the GPU binaries based simulation to be in 'double' precision? I currently generate the input HDF file using 'kspaceFirstOrder3D(kgrid, medium, source, sensor, 'SaveToDisk', filename, input_args{:})'. I tried setting 'DataCast' option to 'double' and 'gpuArray-double'. But the the output variables were always in single precision. </p> <p>Thanks,<br /> Karthik </p>