http://www.k-wave.org/forum/topic/performance-of-runing-gpu-simulations Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 00:42:17 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/performance-of-runing-gpu-simulations#post-8029 Wed, 27 Jan 2021 02:11:19 +0000 rainbowwhale 8029@http://www.k-wave.org/forum/ <p>"WARNING: Highest prime factors in each dimension are 97 97<br /> Use dimension sizes with lower prime factors to improve speed"<br /> Your grid is not consist of small prime numbers.<br /> 4096*4096 grid could be faster than current configuration. </p> http://www.k-wave.org/forum/topic/performance-of-runing-gpu-simulations#post-8028 Tue, 26 Jan 2021 11:40:53 +0000 Mengjie_shi 8028@http://www.k-wave.org/forum/ <p>Hi everyone, </p> <p>I tried to run the 2D k-wave simulation of the line sensor using the GPU version. Here is the output. </p> <p>Resizing matrix...<br /> input grid size: 384 by 384 elements<br /> output grid size: 3840 by 3840 elements<br /> completed in 0.080413s<br /> Running k-Wave simulation...<br /> start time: 26-Jan-2021 09:55:04<br /> reference sound speed: 1500m/s<br /> dt: 2ns, t_end: 36.202us, time steps: 18102<br /> input grid size: 3840 by 3840 grid points (38.4 by 38.4mm)<br /> maximum supported frequency: 75MHz<br /> expanding computational grid...<br /> computational grid size: 3880 by 3880 grid points<br /> WARNING: Highest prime factors in each dimension are 97 97<br /> Use dimension sizes with lower prime factors to improve speed<br /> precomputation completed in 2.6354s<br /> saving input files to disk...<br /> completed in 1.6728s<br /> +---------------------------------------------------------------+<br /> | kspaceFirstOrder-CUDA v1.3 |<br /> +---------------------------------------------------------------+<br /> | Reading simulation configuration: Done |<br /> | Selected GPU device id: 0 |<br /> | GPU device name: GeForce RTX 2070 with Max-Q Design |<br /> | Number of CPU threads: 1 |<br /> | Processor name: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz |<br /> +---------------------------------------------------------------+<br /> | Simulation details |<br /> +---------------------------------------------------------------+<br /> | Domain dimensions: 3880 x 3880 |<br /> | Medium type: 2D |<br /> | Simulation time steps: 18102 |<br /> +---------------------------------------------------------------+<br /> | Initialization |<br /> +---------------------------------------------------------------+<br /> | Memory allocation: Done |<br /> | Data loading: Done |<br /> | Elapsed time: 0.24s |<br /> +---------------------------------------------------------------+<br /> | FFT plans creation: Done |<br /> | Pre-processing phase: Done |<br /> | Elapsed time: 1.68s |<br /> +---------------------------------------------------------------+<br /> | Computational resources |<br /> +---------------------------------------------------------------+<br /> | Current host memory in use: 1521MB |<br /> | Current device memory in use: 2917MB |<br /> | Expected output file size: 8MB |<br /> +---------------------------------------------------------------+<br /> | Simulation |<br /> +----------+----------------+--------------+--------------------+<br /> | Progress | Elapsed time | Time to go | Est. finish time |<br /> +----------+----------------+--------------+--------------------+<br /> | 0% | 0.086s | 778.300s | 26/01/21 10:08:10 |<br /> | 5% | 58.048s | 1100.480s | 26/01/21 10:14:30 |<br /> | 10% | 127.455s | 1145.829s | 26/01/21 10:16:24 |<br /> | 15% | 200.249s | 1133.909s | 26/01/21 10:17:25 |<br /> | 20% | 273.220s | 1092.277s | 26/01/21 10:17:57 |<br /> | 25% | 346.869s | 1040.147s | 26/01/21 10:18:19 |<br /> | 30% | 419.282s | 977.964s | 26/01/21 10:18:28 |<br /> | 35% | 492.980s | 915.245s | 26/01/21 10:18:40 |<br /> | 40% | 567.184s | 850.541s | 26/01/21 10:18:49 |<br /> | 45% | 640.790s | 782.996s | 26/01/21 10:18:55 |<br /> | 50% | 714.071s | 713.755s | 26/01/21 10:18:59 |<br /> | 55% | 787.334s | 643.909s | 26/01/21 10:19:02 |<br /> | 60% | 862.208s | 574.567s | 26/01/21 10:19:08 |<br /> | 65% | 935.525s | 503.536s | 26/01/21 10:19:10 |<br /> | 70% | 1009.156s | 432.313s | 26/01/21 10:19:13 |<br /> | 75% | 1082.477s | 360.666s | 26/01/21 10:19:14 |<br /> | 80% | 1155.983s | 288.856s | 26/01/21 10:19:16 |<br /> | 85% | 1229.012s | 216.762s | 26/01/21 10:19:17 |<br /> | 90% | 1301.022s | 144.452s | 26/01/21 10:19:17 |<br /> | 95% | 1373.348s | 72.189s | 26/01/21 10:19:17 |<br /> +----------+----------------+--------------+--------------------+<br /> | Elapsed time: 1446.09s |<br /> +---------------------------------------------------------------+<br /> | Sampled data post-processing: Done |<br /> | Elapsed time: 0.01s |<br /> +---------------------------------------------------------------+<br /> | Summary |<br /> +---------------------------------------------------------------+<br /> | Peak host memory in use: 1521MB |<br /> | Peak device memory in use: 2917MB |<br /> +---------------------------------------------------------------+<br /> | Total execution time: 1448.90s |<br /> +---------------------------------------------------------------+<br /> | End of computation |<br /> +---------------------------------------------------------------+ </p> <p>GPU speeded up the progress of the simulations but it seems it doesn't improve the speed significantly. I don't know whether the total time 1448.90s is the shortest time it can achieve regarding my small spatial grid step? If not, would you please tell me how I can improve it? By the way, This is my first time trying GPU. Any suggestions and learning materials are very welcome. Thank you. </p>