# Latest **URL:** https://gpusph.discourse.group/latest.md?page=1 [Latest](https://gpusph.discourse.group/latest.md) · [Categories](https://gpusph.discourse.group/categories.md) **Page:** 2 --- ## [Paid internship to work with/on GPUSPH (call ends January 18)](https://gpusph.discourse.group/t/paid-internship-to-work-with-on-gpusph-call-ends-january-18/192)
**Author:** [@giuseppe.bilotta](https://gpusph.discourse.group/u/giuseppe.bilotta)\ **Replies:** 0\ **Last updated:** [January 14, 2024, 3:37pm UTC](https://gpusph.discourse.group/t/paid-internship-to-work-with-on-gpusph-call-ends-january-18/192 "2024-01-14T15:37:57Z")
My institution currently has a call open for an 18-month paid research internship (“assegno professionalizzante”) to work with and on GPUSPH in the modeling of plastic transport by water waves. The call ends on January 1… --- ## [Seeking for guide on WEC](https://gpusph.discourse.group/t/seeking-for-guide-on-wec/191)
**Author:** [@Cfdlearner](https://gpusph.discourse.group/u/Cfdlearner)\ **Replies:** 10\ **Last updated:** [December 26, 2023, 8:44am UTC](https://gpusph.discourse.group/t/seeking-for-guide-on-wec/191 "2023-12-26T08:44:25Z")
Dear Forum due to the passion of trying to study SPH using GPUSPH , i am trying to reproduce a case but seems i am failing to get direction and i am here again to seek for help on how to reproduced this case if anyone … --- ## [Beginners To SPH Courses](https://gpusph.discourse.group/t/beginners-to-sph-courses/190)
**Author:** [@Cfdlearner](https://gpusph.discourse.group/u/Cfdlearner)\ **Replies:** 2\ **Last updated:** [October 15, 2023, 6:29am UTC](https://gpusph.discourse.group/t/beginners-to-sph-courses/190 "2023-10-15T06:29:13Z")
Dear GPUSPH i found it very hard to reproduce some cases e.g (wave energy converter) as a beginner to SPH and gpusph. My question is whether there are any guidance courses or materials available to assist beginners. Hop… --- ## [Heat equation in GPUSPH](https://gpusph.discourse.group/t/heat-equation-in-gpusph/189)
**Author:** [@giuseppe.bilotta](https://gpusph.discourse.group/u/giuseppe.bilotta)\ **Replies:** 0\ **Last updated:** [October 9, 2023, 6:50pm UTC](https://gpusph.discourse.group/t/heat-equation-in-gpusph/189 "2023-10-09T18:50:41Z")
We are currently revamping the heat equation solver we developed for lava flows so that it can be integrated in the main GPUSPH branches. Although it is unlikely that this will be integrated in GPUSPHv6, the feature shou… --- ## [multi-GPU ,GPUDIRECT question](https://gpusph.discourse.group/t/multi-gpu-gpudirect-question/186)
**Author:** [@Cfdlearner](https://gpusph.discourse.group/u/Cfdlearner)\ **Replies:** 4\ **Last updated:** [July 8, 2023, 5:44am UTC](https://gpusph.discourse.group/t/multi-gpu-gpudirect-question/186 "2023-07-08T05:44:13Z")
I have a question regarding my recent experience with running (SPH) simulations on multiple GPUs. While exploring various options, I came across GPUSPH, an excellent platform for such computations. In an attempt to optim… --- ## [Cannot Compile Chrono On Spheric2022](https://gpusph.discourse.group/t/cannot-compile-chrono-on-spheric2022/184)
**Author:** [@Engineer\_Bee](https://gpusph.discourse.group/u/Engineer_Bee)\ **Replies:** 1\ **Last updated:** [June 17, 2023, 1:05pm UTC](https://gpusph.discourse.group/t/cannot-compile-chrono-on-spheric2022/184 "2023-06-17T13:05:24Z")
Hello Forum i am new to GPUSPH and i have tried to run Spheric2022 using Chrono but i keep having Eigen error any help will be appreciated (i have tried on chrono V4 ,V8 and Eigen 3.4 but still same )if i run in GPUS… --- ## [New published work uses GPUSPH to simulate waves overtopping on offshore platforms](https://gpusph.discourse.group/t/new-published-work-uses-gpusph-to-simulate-waves-overtopping-on-offshore-platforms/183)
**Author:** [@vito.zago](https://gpusph.discourse.group/u/vito.zago)\ **Replies:** 0\ **Last updated:** [March 15, 2023, 9:37pm UTC](https://gpusph.discourse.group/t/new-published-work-uses-gpusph-to-simulate-waves-overtopping-on-offshore-platforms/183 "2023-03-15T21:37:35Z")
Just published on Ocean Engineering: https://authors.elsevier.com/c/1glQ46nh74kdW This paper uses laboratory experiments to characterise the patterns that greenwater fronts can form when overtopping offshore decks. The … --- ## [A teaser for the upcoming GPUSPH v6](https://gpusph.discourse.group/t/a-teaser-for-the-upcoming-gpusph-v6/182)
**Author:** [@giuseppe.bilotta](https://gpusph.discourse.group/u/giuseppe.bilotta)\ **Replies:** 0\ **Last updated:** [March 9, 2023, 11:59am UTC](https://gpusph.discourse.group/t/a-teaser-for-the-upcoming-gpusph-v6/182 "2023-03-09T11:59:09Z")
We understand that the radio silence is suboptimal, but rest assured that we’re still working on GPUSPH v6. This is a significant release, with several new features and optimizations, and a revamped documentation. Gettin… --- ## [Problem for 2D Initial Condition HDF5 Files](https://gpusph.discourse.group/t/problem-for-2d-initial-condition-hdf5-files/181)
**Author:** [@MGYBY](https://gpusph.discourse.group/u/MGYBY)\ **Replies:** 2\ **Last updated:** [January 5, 2023, 7:08pm UTC](https://gpusph.discourse.group/t/problem-for-2d-initial-condition-hdf5-files/181 "2023-01-05T19:08:59Z")
Hello all, I am new to GPUSPH and my application is the wave propagation in two dimensions (2D). My initial water surface is a sinusoidal function of spatial coordinates and the typical implementation of such initial co… --- ## [Modification: REPACKING](https://gpusph.discourse.group/t/modification-repacking/150)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 5\ **Last updated:** [November 8, 2022, 9:56am UTC](https://gpusph.discourse.group/t/modification-repacking/150 "2022-11-08T09:56:37Z")
I think I have complete the REPACK mode. (without SA) this case is BuoyanceTest with a Sphere. The code is updated in github (P.S. this is the first time I use GITHUB, not sure I did it property) Also, XYZReader,… --- ## [Question about Eigen and GPUSPH spheric 2022](https://gpusph.discourse.group/t/question-about-eigen-and-gpusph-spheric-2022/174)
**Author:** [@ColarJohn](https://gpusph.discourse.group/u/ColarJohn)\ **Replies:** 1\ **Last updated:** [August 8, 2022, 9:04pm UTC](https://gpusph.discourse.group/t/question-about-eigen-and-gpusph-spheric-2022/174 "2022-08-08T21:04:22Z")
Dear GPUSPH development team When I try to run GPUSPH(spheric 2022), the test cases about FEA can not work. But the other cases can work very well. The operating system: Ubuntu 20.04 GPU card: Tesla A100 Eigen 3.4… --- ## [Floaing rotation in Chrono](https://gpusph.discourse.group/t/floaing-rotation-in-chrono/173)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 1\ **Last updated:** [July 14, 2022, 12:46pm UTC](https://gpusph.discourse.group/t/floaing-rotation-in-chrono/173 "2022-07-14T12:46:29Z")
Hi, maybe you remember I fix the non-identical result when resuming a simulation with CHRONO before. Code modification: resume with chrono body I think these non-identical results are caused by acceleration data missing… --- ## [About GPUSPH v6](https://gpusph.discourse.group/t/about-gpusph-v6/172)
**Author:** [@ColarJohn](https://gpusph.discourse.group/u/ColarJohn)\ **Replies:** 2\ **Last updated:** [June 26, 2022, 12:41am UTC](https://gpusph.discourse.group/t/about-gpusph-v6/172 "2022-06-26T00:41:34Z")
Dear GPUSPH development team, I noticed that GPUSPH V6 had been featured as training material for the practical sessions of the Training Day in the 16th edition of the SPHERIC International Workshop. When will we see th… --- ## [GPUSPH simulations with the SALOME user interface](https://gpusph.discourse.group/t/gpusph-simulations-with-the-salome-user-interface/169)
**Author:** [@Paolo](https://gpusph.discourse.group/u/Paolo)\ **Replies:** 2\ **Last updated:** [April 7, 2022, 4:09pm UTC](https://gpusph.discourse.group/t/gpusph-simulations-with-the-salome-user-interface/169 "2022-04-07T16:09:54Z")
Hello, I apologize if this has already been explained somewhere, until now I have not found it: I would like to try to use GPUSPH and the particle preprocessor as modules in SALOME, and also read the part of their docum… --- ## [GPUSPH at the 16th SPHERIC International Workshop in Catania (June 2022)](https://gpusph.discourse.group/t/gpusph-at-the-16th-spheric-international-workshop-in-catania-june-2022/166)
**Author:** [@giuseppe.bilotta](https://gpusph.discourse.group/u/giuseppe.bilotta)\ **Replies:** 0\ **Last updated:** [January 27, 2022, 7:55pm UTC](https://gpusph.discourse.group/t/gpusph-at-the-16th-spheric-international-workshop-in-catania-june-2022/166 "2022-01-27T19:55:57Z")
Dear GPUSPH users, the 16th edition of the SPHERIC International Workshop we will be returning to an in-person event, in Catania, Italy, from June 7 to June 9, 2022, as usual preceded by a Training Day on June 6, 2022. … --- ## [Question about the new DUMMY\_BOUNDARY](https://gpusph.discourse.group/t/question-about-the-new-dummy-boundary/161)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 8\ **Last updated:** [November 7, 2021, 7:56am UTC](https://gpusph.discourse.group/t/question-about-the-new-dummy-boundary/161 "2021-11-07T07:56:37Z")
I notice that next have included the new BOUNDARY CONDITION, DUMMY. Actually, I have written it before, basing on another code. There are some points that I am very interested in. If my understanding is right. This bo… --- ## [A little suggestion about writers and output file](https://gpusph.discourse.group/t/a-little-suggestion-about-writers-and-output-file/162)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 1\ **Last updated:** [October 5, 2021, 5:47am UTC](https://gpusph.discourse.group/t/a-little-suggestion-about-writers-and-output-file/162 "2021-10-05T05:47:29Z")
The most important writers are HOTWRITER and VTKWRITER. I have noticed that these two writers execute every save-freq. However, only the last N(setting by users) checkpoints will be kept, others will be deleted. I thin… --- ## [Question about revolute joints](https://gpusph.discourse.group/t/question-about-revolute-joints/159)
**Author:** [@brittlyd](https://gpusph.discourse.group/u/brittlyd)\ **Replies:** 5\ **Last updated:** [August 27, 2021, 1:55pm UTC](https://gpusph.discourse.group/t/question-about-revolute-joints/159 "2021-08-27T13:55:11Z")
Hello, I am attempting to connect two bodies with a revolute joint, so that one is stationary and the other rotates around it along a single axis (the y-axis, in GPUSPH). I am trying to implement the ChLinkLockRevolute … --- ## [Failed when open the vtp file](https://gpusph.discourse.group/t/failed-when-open-the-vtp-file/160)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 11\ **Last updated:** [August 27, 2021, 1:48pm UTC](https://gpusph.discourse.group/t/failed-when-open-the-vtp-file/160 "2021-08-27T13:48:49Z")
Hi, maybe you know that I am doing some development basing on GPUSPH. I’ve had a big problem recently. I can not open the output file .vtp using paraview. I am no idea what is going on. I check the vtk\_header. (onl… --- ## [Question about fillDevice](https://gpusph.discourse.group/t/question-about-filldevice/154)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 7\ **Last updated:** [July 5, 2021, 9:46am UTC](https://gpusph.discourse.group/t/question-about-filldevice/154 "2021-07-05T09:46:53Z")
Hi, I am preparing a large-scale test case. However, I have some questions about splitting the domain. Moreover, It is difficult to test by myself because such a test case needs a supercomputer. So I want to ask the con… --- ## [How to generate an HDF5 file](https://gpusph.discourse.group/t/how-to-generate-an-hdf5-file/153)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 7\ **Last updated:** [June 24, 2021, 10:08am UTC](https://gpusph.discourse.group/t/how-to-generate-an-hdf5-file/153 "2021-06-24T10:08:35Z")
Hi, I have some questions to ask. How to generate an HDF5 file. Can I use SALOME? What information I need to generate HDF5 file. Geometry, Points cloud, or mesh. And what information in such a file. When enabling IO bo… --- ## [Failed initializeChrono](https://gpusph.discourse.group/t/failed-initializechrono/151)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 6\ **Last updated:** [June 16, 2021, 10:05am UTC](https://gpusph.discourse.group/t/failed-initializechrono/151 "2021-06-16T10:05:05Z")
Hi, I got the following message when I trying to import a XYZfile with a .obj mesh In function InitializeChrono() in ProblemCore.cc Breakpoint 1, ProblemCore::InitializeChrono (this=0x5555566366e0) at src/ProblemCore.c… --- ## [Segment fault when handling buffer data](https://gpusph.discourse.group/t/segment-fault-when-handling-buffer-data/143)
**Author:** [@RRRRLi](https://gpusph.discourse.group/u/RRRRLi)\ **Replies:** 2\ **Last updated:** [June 1, 2021, 2:58pm UTC](https://gpusph.discourse.group/t/segment-fault-when-handling-buffer-data/143 "2021-06-01T14:58:10Z")
Hello, I’m trying to simulate a pouring scene and compute how many particles are in the cup at the end. I didn’t find an API for post-process for the whole problem but a single frame, i.e. addPostProcess(CALC\_PRIVATE);. … --- ## [multi-GPU running error](https://gpusph.discourse.group/t/multi-gpu-running-error/149)
**Author:** [@joshua](https://gpusph.discourse.group/u/joshua)\ **Replies:** 1\ **Last updated:** [May 26, 2021, 7:22pm UTC](https://gpusph.discourse.group/t/multi-gpu-running-error/149 "2021-05-26T19:22:21Z")
I used the multi-GPU running command with 2,4,6 GPUs. 2 GPUs can run but the results are unreasonable. 4 and 5 GPUs cannot run succesfully. Single GPU performs well. Is there any requirement for compilation for multi… --- ## [XYZfile/HDF5file to create a Floating\_Body](https://gpusph.discourse.group/t/xyzfile-hdf5file-to-create-a-floating-body/147)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 5\ **Last updated:** [May 26, 2021, 7:13pm UTC](https://gpusph.discourse.group/t/xyzfile-hdf5file-to-create-a-floating-body/147 "2021-05-26T19:13:47Z")
Hi, I am trying to create a Floating body using XYZfile or HDF5file. However, some trouble I have found. The first one, in XYZReader.cc. In Line.71 the value npart have not been assignment. It should be npart = getNPa… --- ## [Is there any example to show the function of REPACKING](https://gpusph.discourse.group/t/is-there-any-example-to-show-the-function-of-repacking/146)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 3\ **Last updated:** [May 23, 2021, 7:28pm UTC](https://gpusph.discourse.group/t/is-there-any-example-to-show-the-function-of-repacking/146 "2021-05-23T19:28:37Z")
Hi, I am interested in REPACKING. I guess this RUN\_MODE can redistribute particles to make them to be compatible with a curved boundary. However, I did not find any example to show the function of REPACKING. Did I mis… --- ## [Questions about time matching](https://gpusph.discourse.group/t/questions-about-time-matching/145)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 1\ **Last updated:** [May 2, 2021, 12:02pm UTC](https://gpusph.discourse.group/t/questions-about-time-matching/145 "2021-05-02T12:02:15Z")
I found that there are two exceptions in the code about time matching. One is gdata-\>dt \< FLT\_EPSILON. The other one is gdata-\>t == previous\_t. The later one is quite easy to understand, and the datatype of gdata-\>t i… --- ## [Code modification: resume with chrono body](https://gpusph.discourse.group/t/code-modification-resume-with-chrono-body/144)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 3\ **Last updated:** [May 2, 2021, 11:44am UTC](https://gpusph.discourse.group/t/code-modification-resume-with-chrono-body/144 "2021-05-02T11:44:28Z")
Hi, I have noticed that when resuming a case with chrono body. its result is not coincide with that of non-resume one. this a because some variables in chrono are missing during hotwrite/hotread. chrono require coord, … --- ## [Resume a simulation with ODE bodies](https://gpusph.discourse.group/t/resume-a-simulation-with-ode-bodies/141)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 3\ **Last updated:** [April 23, 2021, 9:26am UTC](https://gpusph.discourse.group/t/resume-a-simulation-with-ode-bodies/141 "2021-04-23T09:26:53Z")
I notice that when resuming a simulation with ODE bodies, I would get a WARNING “simulation has rigid bodies and/or moving boundaries, resume will not give identical results”. I did a simple test using the BuoyancyTest… --- ## [How can we resume a simulation](https://gpusph.discourse.group/t/how-can-we-resume-a-simulation/140)
**Author:** [@JoJo](https://gpusph.discourse.group/u/JoJo)\ **Replies:** 2\ **Last updated:** [April 18, 2021, 12:39am UTC](https://gpusph.discourse.group/t/how-can-we-resume-a-simulation/140 "2021-04-18T00:39:16Z")
Hi. I want to know how can we resume an interrupted case. I think that is what Hotfile and the “.bin” file do However, I can not find it in the documentation. [Previous page](https://gpusph.discourse.group/latest.md) [Next page](https://gpusph.discourse.group/latest.md?page=2)