http://www.k-wave.org/forum/topic/record-movie-gpu-simulation Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:28:31 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/record-movie-gpu-simulation#post-6540 Tue, 31 Jul 2018 12:51:11 +0000 Alexll7 6540@http://www.k-wave.org/forum/ <p>Hi Jiri ! </p> <p>First of all, thanks you very much for your answer !<br /> Ok for the impossibility of using "RecordMovie" in this case.<br /> I have precisely chosen the second possibility and I've put a sensor plane just under my transducer. If other people use the same solution, I advise the Matlab app "Slicer" to "read" your sensor's output like a video (you can pass before your eyes thanks the scrollbar). </p> <p>Kind regards,<br /> Alex </p> http://www.k-wave.org/forum/topic/record-movie-gpu-simulation#post-6539 Tue, 31 Jul 2018 10:08:12 +0000 Jiri Jaros 6539@http://www.k-wave.org/forum/ <p>Hi Alex,<br /> it is not possible to record movie while using the C++/CUDA code. This would require Matlab and C++ communicating every time step. You have two possibilities:<br /> (1) run the code in Matlab (if you want to use GPUs in Matlab, recast the data to gpuArray-single).<br /> (2) parse the output file and create the video yourself. For example, if you want to see the pressure wave in a 2D plane, define a 2D cuboid in sensors. After the simulation, you'll find a group /p in the output file. Here you can find you sensor mask as one of the datasets /1 /2 etc. (depending on how many sensors you use and the order you created them). Finally, the dataset will have a shape of [Nx, Ny, Nz, Nt]. By reading the timesteps one by one, you can generate the video.</p> <p>Best,<br /> Jiri </p> http://www.k-wave.org/forum/topic/record-movie-gpu-simulation#post-6533 Tue, 24 Jul 2018 12:41:43 +0000 Alexll7 6533@http://www.k-wave.org/forum/ <p>Hello there !<br /> I run my simulations with GPU on a cluster. I'm trying to use the option "RecordMovie" but I'm not succeeding in this. In fact I save the input file like that : </p> <p>«<br /> input_args = {...<br /> 'PMLInside', false, 'PMLSize', [PML_X_SIZE, PML_Y_SIZE, PML_Z_SIZE], ...<br /> 'DataCast', DATA_CAST, 'DataRecast', true, 'PlotSim', false, 'RecordMovie', true, 'MovieName', '/data/epione/user/allegay/output/K_wave/film', 'SaveToDisk', '/data/epione/user/allegay/input/K_wave/input_film.h5'};</p> <p>sensor_data = kspaceFirstOrder3D(kgrid, medium, transducer, sensor, input_args{:}); »</p> <p>and after that I just use « kspaceFirstOrder3D-CUDA_OLD -i input_film.h5 -o output_film.h5 » </p> <p>I have no errors and the simulation is OK but I just obtain the output file "output_film.h5" but no movie...? The movie is in the hdf5 file ?<br /> Or my option "RecordMovie" is not taken into account because it is not saved in the hdf5 file ?<br /> How could I do this please ?<br /> Thanks in advance and sorry for my very bad english.</p> <p>Alexandre L </p>