Hi,Radu Thanks for your answer.
I am going to do visualization in UE, I created ChBodyEasyBox object, but I can't find its mesh data. where is the vertex data or face data? 在2023年10月23日星期一 UTC+8 19:55:18<Radu Serban> 写道： > Page, > > > > A few clarifications: > > > > - The simulation of a vehicle fording a river is **not** SPH, but > rather a simulation using the so-called “constrained fluid” approach for > CFD. That is available in Chrono::Multicore. While that particular > simulation is not provided as a demo in Chrono, you can look at > demo_MCORE_fluidNSC > > <https://github.com/projectchrono/chrono/blob/main/src/demos/multicore/demo_MCORE_fluidNSC.cpp> > > which uses that method for a simpler scenario. > - None of these more complex simulations (DEM, SPH, constrained fluid) > will run in real time! Quite far from it. > - As I mentioned to you before, we provide run-time visualization for > such simulations mostly as a visual debugging tool. If anything, run-time > visualization adds to the computational cost. > - Rendering of results from such simulations is done as a > post-processing step, using various tools and techniques. That particular > fording simulation was most likely done with Mitsuba. One other option is > to use Blender (look at the relatively new Blender plugin for Chrono > <https://api.projectchrono.org/introduction_chrono_blender.html>). > - Regarding your difficulties in getting VSG to work, that appears to > be an issue with you getting all necessary dependencies properly > installed. > We cannot provide help and support for all of these third-party libraries > and tools. You will need to read more about those yourself, or else take > it > up with the developers of those particular packages. In this case, you > are > having trouble getting VSG built and install properly, so that’s where you > would start. Having said that, I suspect that the problem is that you > have > not properly set up the necessary environment variables for VSG to find > your installation of the Vulkan SDK (namely, you must set VULKAN_SDK) > > > > --Radu > > > > *From:* 'Page' via ProjectChrono <[email protected]> > *Sent:* Monday, October 23, 2023 12:00 PM > *To:* ProjectChrono <[email protected]> > *Subject:* Re: [chrono] Thrust library and PARALLEL module install faild > > > > Hi Ruochun, > > Thank you ,It's okay, I'll explore SPH simulation myself later.I > encountered this error after installing the VSG module : > > FATAL: VulkanSceneGraph not compiled with GLSLang, unacompile ble to > shaders. > > I don't know how to solve it > > Page > > > > 在2023年10月23日星期一 UTC+8 17:19:51<Ruochun Zhang> 写道： > > Hi Page, > > > > That movie is about an SPH simulation. I am not familiar with either the > underlying simulation or the rendering technique used. Sorry. > > > > Ruochun > > On Monday, October 23, 2023 at 4:09:13 AM UTC-5 Page wrote: > > Hi,Ruochun > > I am sad because DEM does not support the window system. How can I achieve > such real-time rendering effects in the window system? > > (https://www.youtube.com/watch?v=ev_WcruedXo) > > > > 在2023年10月22日星期日 UTC+8 23:35:49<Ruochun Zhang> 写道： > > Hi Page, > > > > Note that right now, DEME works on Linux only and there is no integrated > run-time visualization. But if you built it on Linux and still got syntax > errors, you could post them here if you need help. > > > > Thank you, > > Ruochun > > > > On Sunday, October 22, 2023 at 9:43:17 AM UTC-5 Page wrote: > > Hi,Radu > > Thanks for your answer, I'm really excited to explore Chrono every day. I > have successfully installed the VSG module, but when running the error: > FATAL: VulkanSceneGraph not compiled with GLSLang, unable to compile > shaders, I do not know how to solve. > > After that, I installed DEME, I used cmake-gui to configure, I had > selected TargetCXXStandard to STD_CXX17, but there were still a lot of > syntax errors after build. > > I saw this video (https://www.youtube.com/watch?v=ev_WcruedXo) is really > cool.Is this running visualization? What module? Or offline rendering?where > can I download this source? > > > > > > 在2023年10月21日星期六 UTC+8 15:03:27<Radu Serban> 写道： > > > 1. In Chrono::Multicore, the GPU is used for other types of simulation > (an MPM code which is currently not actively maintained). The GPU in that > model is not used to accelerate granular dynamics. > 2. Currently, the Chrono::GPU module only supports run-time > visualization through Chrono::OpenGL (no VSG support at this time). To > get > that going, you will need to set ENABLE_MODULE_OPENGL to “on” during CMake > configuration and have various GL dependency libraries available. See the > corresponding installation page for that module. > 3. Beware of using runtime visualization with any of the GPU-0based > codes. That slows down the overall simulation by quite a bit (since data > needs to be transferred back and forth between the GPU and the CPU). This > should only be used as a way to verify your model and simulation, and then > disabled for performance runs. > > > > Regarding the errors you get while installing the VSG dependencies: > > 1. It seems that you are using an older version of the Chrono code. > Please pull the latest code from the ‘main’ git branch. The ‘buidVSG.bat’ > script in this latest code should attempt to build vsg v 1.0.7 (and not > 1.0.5 as your message indicates) > 2. If you want us to be able to help, please provide more complete > information. In this case, please run the buildVSG.bat script from a > terminal, redirect output to a file, and share that output with us. Make > sure you follow the instructions in the comments at the top of > buildVSG.bat > and, as indicated there, edit the script as appropriate. > > > > --Radu > > > > > > *From:* 'Page' via ProjectChrono <[email protected]> > *Sent:* Wednesday, October 18, 2023 10:37 AM > *To:* ProjectChrono <[email protected]> > *Subject:* Re: [chrono] Thrust library and PARALLEL module install faild > > > > Hi,Radu > > Thank you very much for your answer, I found the question :(Run the script > from a terminal (not by double clicking on it!) I have successfully run the > multicore module demo, but I still have the following questions: > > 1. I saw in the multicore module demo that both CPU and GPU worked, but > when I increased the number of particles, the picture was very slow, and I > didn't understand, Why is the GPU in the calculation, the simulation > picture is still very slow? > > 2.So I tried to use GPU module, when running GPU module, there was no > rendering window, is it because I did not install VSG module? so I tried to > install VSG module, there was a problem when installing VSG module, I ran > the buildVSG.bat script in the terminal,Each time I run it I get same > errors, such as Failed to clone 'src/implot'. and Failed to clone > 'src/imgui'. > > CMake Warning at CMakeLists.txt:25 (find_package): > > By not providing "Findvsg.cmake" in CMAKE_MODULE_PATH this project > has asked CMake to find a package configuration file provided by "vsg", > but CMake did not find one. > > > > Could not find a package configuration file provided by "vsg" > (requested version 1.0.5) with any of the following names: > > vsgConfig.cmake > > vsg-config.cmake > > Add the installation prefix of "vsg" to CMAKE_PREFIX_PATH or set > "vsg_DIR" to a directory containing one of the above files. If "vsg" > provides a separate development package or SDK, be sure it has been > installed. > > > > in C:\Packages\vsg\lib\cmake only generated 3 files > :assimp-5.2,vsg,vsgXchange, no vsgImGui, what did I do wrong? > > Thank you very much for developing such a powerful engine > > > > 在2023年10月13日星期五 UTC+8 14:07:27<Radu Serban> 写道： > > Page, > > > > I just rechecked that the buildGL.bat script provided with the Chrono > distribution, and everything works as expected. > > > > 1. Make sure you have the latest Chrono code. > 2. As indicated in the installation instruction on the Chrono webpage, > you should maybe copy the script in a temporary directory and edit it to > change settings as needed on your machine (e.g., change where the GL > dependencies will be installed). > 3. Run the script from a terminal (not by double clicking on it!). > This script will download, uncompress, configure, build, and install the > GL > dependency libraries. > 4. When running, the script will create additional subdirectories. > Check that the ‘download_gl/’ directory contains the expected downloaded > packages. Check that the ‘build_glew/’ and ‘build_glfw/’ directories were > created. > 5. Check the output of running the buildGL.bat script to figure out > what goes wrong in your case. > 6. Finally, check that the installation directory (the location you > selected when editing your local copy of the script in step 2 above) > contains 3 subdirectories, named ‘bin/’, ‘include/’, and ‘lib/’. > > > > Once you successfully get the GL dependencies built and installed, when > configuring Chrono with CMake, you will need to set the GLEW_DIR and > GLM_INCLUDE_DIR variables appropriately to point to the corresponding > directories in the GL install directory. > > > > --Radu > > > > *From:* 'Page' via ProjectChrono <[email protected]> > *Sent:* Friday, October 13, 2023 3:52 AM > *To:* ProjectChrono <[email protected]> > *Subject:* Re: [chrono] Thrust library and PARALLEL module install faild > > > > Hi,Radu > > Thanks for your reply, I found the multicore module. The Demo ran > successfully, but I still have to install the OpengGL module for > visualization, as per this page > https://api.projectchrono.org/module_opengl_installation.html to install > opengl,after clicking builtsl.bat, in my C:\Packages\gl directory only the > include file is generated, and there is no lib folder as described in the > documentation > > CMake Error at > D:/CMake/cmake-3.27.6-windows-x86_64/share/cmake-3.27/Modules/FindPackageHandleStandardArgs.cmake:230 > > (message): > Could NOT find GLEW (missing: GLEW_INCLUDE_DIRS GLEW_LIBRARIES) > Call Stack (most recent call first): > D:/CMake/cmake-3.27.6-windows-x86_64/share/cmake-3.27/Modules/FindPackageHandleStandardArgs.cmake:600 > > (_FPHSA_FAILURE_MESSAGE) > D:/CMake/cmake-3.27.6-windows-x86_64/share/cmake-3.27/Modules/FindGLEW.cmake:238 > > (find_package_handle_standard_args) > src/chrono_opengl/CMakeLists.txt:42 (find_package) > > I need your help > > > > 在2023年10月11日星期三 UTC+8 13:45:21<Radu Serban> 写道： > > The “parallel” module was renamed (a long time ago) to the “multicore” > module. This is why you cannot find it or enable it during CMake > configuration. (As a side note, I have no idea where/how you got the link > you posted below!) > > > > Having said that, this multicore module offers parallelization through > OpenMP. For better performance, you should look at the Chrono::GPU module > which also offers DEM capabilities (albeit only the so-called “penalty > formulation”) or better yet to the newer DEME > <https://github.com/projectchrono/DEM-Engine> package. The latter two > are GPU codes (based on CUDA, hence requiring an Nvidia GPU). > > > > Note that the Thrust library comes with any recent CUDA distribution, so > there’s nothing you need to do about Thrust if you install CUDA (which you > will need anyway if you want to use any of the GPU codes). The > Chrono::Multicore module also requires Thrust (but uses its OpenMP > backend). If you do not have an Nvidia GPU and only want to use the > Chrono::Multicore module, you can indeed get Thrust stand-alone. But even > then, Thrust is a headers-only library, so there’s no need to build > anything to be able to use it. > > > > --Radu > > > > *From:* 'Page' via ProjectChrono <[email protected]> > *Sent:* Wednesday, October 11, 2023 4:38 AM > *To:* ProjectChrono <[email protected]> > *Subject:* [chrono] Thrust library and PARALLEL module install faild > > > > Hello All, > > I'm beginner to chrono, and I'm particularly interested in small particle > fluid simulation, so I downloaded the source code for demo_MBS_sph, but > it's very slow and I want to learn how to use a GPU for acceleration. So I > downloaded the demo_GPU_ballCosim source code to study, but couldn't figure > out why it didn't have a visual rendering window. I wanted to use the > PARALLEL module, but I had a problem installing it. > > 1. After the Thrust library was downloaded, it took 6 hours to build and 4 > errors occurred. error MSB3721: The command "C:\Program Files\NVIDIA GPU > Computing Toolkit\CUDA\v12.0\bin\nvcc.exe" -- use-local-env-ccbin > "E:\VS2022\IDE\VC\Tools\MSVC\14.33.31629\bin\HostX64\x64" -x cu-IE > :\Chrono\Thrust\thrust\testing -IE:\Chrono\Thrust\thrust\thrust\cmake\.. > \.. -IE:\Chrono\Thrust\thrust\dependencies\libcudacxx\include > -IE:\Chrono\Thrust\thrust\dependencies\cub\cub\cmake\.. \.. -I"C:\Program > Files\NVIDIA GPU Computing Toolkit\CUDA\v12.0\include" --keep-dir x64\ > Debug-maxrregcount =0 --machine 64 --compile -cudart static -gencode > arch=compute_90,code=compute_90 -gencode arch=compute_50,code=sm_50 > -gencode arch=compute_52,code=sm_52 -gencode arch=compute_53,code=sm_53 > -gencode arch=compute_60,code=sm_60 -gencode arch=compute_61,code=sm_61 > -gencode arch=compute_62,code=sm_62 -gencode arch=compute_70,code=sm_70 > -gencode arch=compute_72,code=sm_72 -gencode arch=compute_75,code=sm_75 > -gencode arch=compute_80,code=sm_80 -gencode arch=compute_86,code=sm_86 > -gencode arch=compute_90,code=sm_90 -std=c++14 > -Xcudafe=--display_error_number -Wno-deprecated-gpu-targets > -Xcudafe=--promote_warnings -Xcompiler="/EHsc -Zi -Ob0 /wd4324 /wd4505 > /wd4706 /wd4244 /wd4146 /wd4494 /bigobj /wd4127" -g -D_WINDOWS > -DTHRUST_TEST_DEVICE_SIDE -DTHRUST_HOST_SYSTEM=THRUST_HOST_SYSTEM_CPP > -DTHRUST_DEVICE_SYSTEM=THRUST_DEVICE_SYSTEM_CUDA -DNOMINMAX > -D"CMAKE_INTDIR=\"Debug\"" -D_MBCS -D"CMAKE_INTDIR=\"Debug\"" -Xcompiler > "/EHsc /W4 /nologo /Od /Fdthrust.test.copy.dir\Debug\vc143.pdb /FS /Zi > /RTC1 /MDd /GR" -o thrust.test.copy.dir\Debug\copy.obj > "E:\Chrono\Thrust\thrust\testing\copy.cu" has exited, returning code 1. > 81> The thrust.test.copy.vcxproj project has been generated. - Failed. > > 2.I will ignore these mistakes for the time being.look at the tutorial : > > https://api.projectchrono.org/module_parallel_installation.html > > to continue to do, I want to start the PARALLEL cmake configuration > module, but there was no E I cmake NABLE_MODULE_PARALLEL This option. > > 3. I want to ask, want to see the small particle simulation project, but > also want to make the project run faster, what should I do? Thank you very > much. > > -- > You received this message because you are subscribed to the Google Groups > "ProjectChrono" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/projectchrono/3728dd7f-a81b-4188-95a6-656528e2034cn%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/3728dd7f-a81b-4188-95a6-656528e2034cn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "ProjectChrono" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/projectchrono/c12cb0c4-db52-4d3e-aed7-a0ebf5aca838n%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/c12cb0c4-db52-4d3e-aed7-a0ebf5aca838n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "ProjectChrono" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/projectchrono/af3064a1-0cd7-4ec8-bafc-4be8061c09d3n%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/af3064a1-0cd7-4ec8-bafc-4be8061c09d3n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "ProjectChrono" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/projectchrono/c032a394-3f8d-4b8f-9e82-7dab284f2858n%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/c032a394-3f8d-4b8f-9e82-7dab284f2858n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/bdf101aa-3853-47b3-918d-91044503b6fdn%40googlegroups.com.
