Warning your internet explorer is in compatibility mode and may not be displaying the website correctly. Analysis of comsol multiphysics parallel performance on a multi. Comsol makes every reasonable effort to verify the information you view on this page. With over 30 sections added to the software, you can use the simulation space with a variety of physical connections and tools to carry out electrical, mechanical, fluid and chemical projects. They do have comparable clock speeds and core counts as high end.
Comsol provides an ide and unified workflow for electrical, mechanical, fluid, acoustics and chemical applications. The comsol flow simulation sets up a velocity inlet on one side of the digital sample and a pressure outlet on the opposite face. Join us at the comsol conference 2020 grenoble for a firsthand look at what is possible with multiphysics modeling and numerical simulation. A graphical user interface, gui, where the user make their input and receive output. In addition to using multiphysics modeling for your own projects, you can also turn your models into simulation applications and digital twins for use by other design teams, manufacturing departments, test labs, customers, and more. Review the major updates and download the software here. If you want comsol to leave out one or more processor cores you can manually set the number of cores used for a job, you can change the default behavior by starting the comsol desktop and setting the number of processors option on the multicore and cluster computing section in the preferences menu. Using comsol, we can solve for potential issues faster with fewer iterations and significantly reduce the testing cost. In addition to the core physics interfaces included with the comsol multiphysics license, the physics interfaces below are included with the wave optics module and available in the indicated space dimension.
The motor is modeled using comsol multiphysics software and torque value was found out using maxwells stress tensor method. How much memory is needed to solve large comsol models. In addition to the core physics interfaces included with the comsol multiphysics license, the physics interfaces below are included with the wave optics module and available in. How can i set up memory allocation for comsol in your computer. Due to the wide range of different problem types that comsol multiphysics solves, the. How to run comsol multiphysics workflow on nimbix single. If you get a solution, this warning is nothing to worry about. Note that many of the examples featured here can also be accessed via the application libraries that are built into the comsol multiphysics software and available from the file menu. If you run out of memory during the assembly step, you do not have enough ram memory in your computer to solve your model. Comsol simulation of plateaurayleigh instability in a. Comsol software package offers the capabilities of performing heat transfer, electromagnetic, structural analysis, and multiphysics analysis either as standalone or using a highperformance cloud computing service.
Flexnet license manager on linux linux standard base lsb is required for linux on the license server computer. This can create very cumbersome models with text covering up the very spot the engineer wishes to point out. They do have comparable clock speeds and core counts as highend. Where can i find information on how the matrix has to be stored for out of core solution. The study with the fine mesh needs mumps to switch to out of core mode and allocate a lot of virtual memory. The core comsol multiphysics package provides geometry modeling tools for creating parts. Comsol is a proud member of the intel cluster ready program and certifies comsol multiphysics with every new version. When you expand comsol multiphysics with the cfd module, you have access to features for specialized cfd simulations in addition to the core functionality of the comsol multiphysics software platform. As of writing this, both the mumps and pardiso direct solvers in the comsol software come with an outofcore option. Is pardiso an out of core solver then, can it access an out of core stored matrix.
The application builder brings multiphysics simulation to a wider audience by allowing simulation experts to build applications that can be used by engineering, manufacturing and. Using this software, you will be able to calculate the behavior of different or interconnected physical models. If the lsb core package is missing from the distribution repository, manually create a symbolic link as root. In the settings for the direct solvers you can deselect out of core. Therefore you could run the application in a laptop or desktop computer with a quad core but it will be very limited on what you can do. With the out of core option it would happen the same but in a much more efficient way, since this time the solver is aware that has to use the hd. Suppose i have 32gb of ram available, which is the best approach to use to solve a strongly coupled problem with around 2 millions dof.
You will set up a comsol multiphysics server in the form of a rescale job. There is slight amount of saturation seen in stator core at higher currents in the torque profile, which is expected also. May 07, 2014 comsol simulation of the pr fluid instability in an as2se3pes core shell fiber at 300 c. To download the mphfiles, log in or create a comsol access account that is associated with a valid comsol license. For a comprehensive analysis, use the comsol multiphysics software and the acdc module to see how multiple physics affect your design.
However, if you want to check you can verify in filepreferencesmulticorenumber of processors. Optimize your models for the real world with the comsol multiphysics software for engineering designs. When the coreshell nanoparticles are spread on a material surface, raman signals of the species on the surfaces of probe materials could be significantly enhanced. The combination of comsol products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Finally, you will use the comsol gui to connect to this server, carry out your workflow, and disconnectshutdown when finished. You can get rid of the warning and possibly get a little shorter solution time by setting the.
Mumps allocation factor increased comsol multiphysics. The geometry core, where the user can create, receive, and generate a geometric representation suitable for multiphysics. Then, create an ssh tunnel connection in your personal workstation to securely transfer your data to the rescalehosted comsol server. I have a question related to the out of core option.
I tried courser mesh for this case but it didnt work. Traditionally this type of analysis has to be done in a physical. For example, in our 1100kv bushing test, reducing one test could save us 1. If you want to know whether there are available license tokens or not, load the module as above. The license of comsol is installed as a floating network license type, meaning that there is a server checking out license tokens upon request. The certification process ensures that comsol multiphysics will seamlessly work for parallel processing and cluster modeling on any hardware that has also been certified as being intel cluster ready. When defining and solving these problems, the fluid is modeled as incompressible by default but can. The version of lmgrd must be the same or higher than the flexnet version used by the comsol software. What actually i think is happening without out of core option is that when the solver occupies all ram it starts swapping data on the hd, horribly slowing down the simulation speed normally you will see this using task manager and you can see the ram fully occupied and the processors almost running at 0%. Trial licenses are automatically associated with your account. Most electromagnetic components, devices, and products are affected by another branch of physics, whether it be heat transfer, structural mechanics, or acoustics, to name a few. By adding quite thirty elements to the software package, youll use the school area with a spread of physical communications and tools to hold out electrical, mechanical, liquid and chemical flow comes. Comsol uses all your processorsthreads by default with 64 bit system if it needs. For all comsol multiphysics software users, version 5.
When you expand comsol multiphysics with the rf module, you can access features for specialized rf and microwave modeling, in addition to the core functionality of the comsol multiphysics software platform. Apr 17, 2018 dear community, i am currently trying to compare different mesh qualities and how the mesh affects the solution of the problem. I dont think you have to worry about comsol not utilizing all your computational power of the desktoplaptop. How can i set up memory allocation for comsol in your. Does anybody know how to solve the comsol warning mumps is switching to outofcore mode. Finally, modeling results are compared to experimental measurements. Core memory disksuse of disks software challenge implementation of an out of core execution scheme within mumps. The four other sides, as well as the pore boundaries are set up as nonslip walls. Comsol multiphysics is a generalpurpose platform, based on advanced numerical methods, for modeling and simulating physicsbased problems. Change location of comsols virtual memory outofcore file posted 17 apr 2018. Would you like to see a demonstration of the comsol software in real time. Read on for a brief introduction to some of the significant updates to the comsol multiphysics and comsol server platform products and addon modules. What hardware do you recommend for comsol multiphysics. At the point, where all of the free space is filled with the outofcore file the calculation failes with following error.
In addition to using multiphysics modeling for your own projects, you can also turn your models into simulation applications and digital twins for use by other design teams. Comsols recommended minimum configuration criteria is to have at least 1gb of ram per cpu core. The major new addition to comsol multiphysics is the application builder, now included in the softwares core functionality. Switching to a more recent mkl version will give more room. Mar 24, 2010 pardiso also includes out of core capabilities. The pardiso out of core solver stores the lu factors on the hard drive. Looking for a video on how to use the comsol multiphysics software. Software pc mac subscription software software for students small business software best sellers. Modeling software for rf, microwave, and millimeterwave. You will need an onsubscription comsol license attached to your comsol access account or a software trial provided by your sales representative.
If you do not yet have a comsol access account, please create one now. Because the core is made of steel, a magnetostrictive material, these magnetic. Another point that i would like to have clarified is the function of the allocation factor, because i apparently noticed that even with the out of core option i can run out of ram and fall back. Excerpt from the proceedings of the 2014 comsol conference in cambridge modeling of kinetic interface sensitive tracers for two phase immiscible flow in porous media with comsol multiphysics alexandrubogdan tatomir1, apoorv jyoti1, friedrich maier1 and martin sauter1 1dept. The model tree in the model builder gives you a full overview of the model and access to all functionality geometry, mesh, physics settings, boundary conditions, studies, solvers, postprocessing and visualizations. Is there other function in mkl that can solve a linear symmetrix system out of core. The isosurface shows the outer surface of the chalcogenide core. Comsol multiphysics based simulation study on hcci mode diesel combustion chemistry. The comsol multiphysics software suite hpc documentation. Nov 23, 2017 did you know that designing electrical systems and devices is faster and cheaper with simulation. The site is made by ola and markus in sweden, with a lot of help from our friends and colleagues in italy, finland, usa, colombia, philippines, france and contributors from all over the world.
Comsol multiphysics is an engineering, design, and finite element analysis software environment for the modeling and simulation of any physicsbased system. Particular functionality may be common to several products. In addition to using multiphysics modeling for your own projects, you can also turn your models into simulation applications and. Please indicate what you would like to simulate so we may better assist you. Comsol multiphysics alternatives and similar software. Comsol software was the best option out there to solve. Comsol multiphysics software understand, predict, and. Comsol multiphysics software understand, predict, and optimize. All of the features listed below are implemented through associated physics interfaces.
It allows conventional physicsbased user interfaces and coupled systems of partial differential equations pdes. If you want the newest comsol multiphysics features right away, click on the download version 5. Bo zhang, senior engineer at pinggao group, explains. How can i set up a workstation to run comsol efficiently. Through these two examples, we show the influence of the skin effect on the magnetic field distribution in a conducting part and on the way of modeling these elements by replacing volume currents by equivalent surface currents density in comsol software. It is now possible for mems module users who also have a cfd module license to perform fsi simulation with twophase or threephase flow physics, thanks to the improved moving mesh machinery in the core functionality of the comsol multiphysics software see the section below. Core memory disksuse of disks software challenge implementation of an outofcore execution scheme within mumps 225 abdou guermouche, mumps users group meeting, april 2010. Outofcore mumps comsol multiphysics modeling software. How to specify the storage path for pardiso outofcore. Comsol webinar modeling coils and electric devices youtube. The isosurface shows the outer surface of the chalcogenide core during the sphere formation. The comsol multiphysics platform is preloaded with a large set of core physics interfaces for fields such as solid mechanics, acoustics, fluid flow, heat transfer, chemical species transport, and electromagnetics. What actually i think is happening without outofcore option is that when the solver occupies all ram it starts swapping data on the hd, horribly slowing down the simulation speed normally you will see this using task manager and you can see the ram fully occupied and the processors almost running at 0%.
Geometries are defined by sequences of operations, where each operation is able to receive input parameters for easy edits and parametric studies in multiphysics models. Ecore transformer comsol multiphysics modeling software. If you want comsol to leave out one or more processor cores you can manually set the number of cores used for a job. Dec 14, 2017 today marks the release of a new version of the comsol software, which includes core functionality updates and major updates to the addon modules. Did you know that designing electrical systems and devices is faster and cheaper with simulation. The price is longer solution times because it takes longer time to read and write to disk than using the internal memory. This article describes the workflow for performing a simple multiphysics analysis on the nimbix platform using comsol software. Comsol simulation of the pr fluid instability in an as2se3pes coreshell fiber at 300 c. So the point i am stuck right now is the finest mesh. System requirements for comsol multiphysics version 5. Alternativeto is a free service that helps you find better alternatives to the products you love and hate. Then simply log into your comsol access account with your license number linked to it and follow the onscreen product download directions. The energy conversion chain for core noise and load noise generation. Comsol s recommended minimum configuration criteria is to have at least 1gb of ram per cpu core.
I always do this and this really speeds up the process. Due to the nonlinearity and difficulty in predicting the behaviour of bodies coming into and go out of contact, the need of software able to simulate a structural contact problem and couple it with other physics is a major stake. Comsol multiphysics is a crossplatform finite element analysis, solver and multiphysics simulation software. In this paper the influence of the multicore architecture on the processing time for solving a 2d problem, described by a non homogenous. Browse hundreds of videos in the comsol video gallery. Watch our recorded webinar and learn how you can design and simulate physical quantities and. If you want comsol to leave out one or more processor. The reason for out of memory error messages is that comsol is requesting more memory.
The annotation must be right at the spot that is being annotated. First, check how much installed memory ram is in your computer. Change location of comsols virtual memory outofcore file. Outline multifrontal method outofcore factorization step. Workstation hardware for comsol system requirements. To request a demonstration, simply fill out the form on this page.
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