- COMSOL WITH MATLAB MPHINTERP OUT OF MEMORY COMSOL 5.3 PC
- COMSOL WITH MATLAB MPHINTERP OUT OF MEMORY COMSOL 5.3 FREE
Note that the Model Reduction study is only available from the Study context menu when you have the Advanced Study Options enabled. The reduced models produced by the modal solver can also be used to retrieve the system matrices of the reduced linear system through the Java ® API or with LiveLink™ for MATLAB ®, including matrices on state-space form. When using the modal solver, you can use global parameters to define model control inputs for the reduced model, to be substituted with global expressions, making it possible to feed the reduced models rather freely. The reduced models can define global variable outputs and reconstruct selected parts of the unreduced model. You can perform a transient simulation or a frequency sweep directly in the model reduction study, and produce a reduced model to use in a different context, if desired. Then, a reduced model is generated, reproducing the original model as closely as possible, based on the set input-output relationship and a user-defined fidelity measure.Īs part of the new framework, a separate study for model reduction has been introduced with support for using the modal solver as well as the asymptotic waveform evaluation (AWE) solver. Before creating a reduced model, the user defines a set of input and output parameters, as well as a model reduction method ( Modal or AWE in COMSOL Multiphysics ®). One example would be cases where a similar computation needs to be performed many times using different input parameters.
A reduced model is an approximation to the original model, used to accelerate the solution process. Model reduction is a collective name for a range of numerical techniques that are used to generate more efficient models by reducing the number of degrees of freedom that are being solved for. Model ReductionĪ new framework for model reduction is available in COMSOL Multiphysics ® version 5.3a that separates the processes of generating and using reduced models. Read more about all of the updates relating to studies and solvers below. Is there a possibility to tell comsol where to save that "swap-out-of-core-file" without repartitioning my disk or buying more RAM? -) It would also be possible to put this file into the systems swap which is 60GB right now and can be enlarged (I know that swap is slow, but better slow than not possible.COMSOL Multiphysics ® version 5.3a includes a new model reduction feature, more flexibility when combining solutions, and an option to reuse already computed data.
COMSOL WITH MATLAB MPHINTERP OUT OF MEMORY COMSOL 5.3 FREE
I tried to enlarge my systems swap with this approach (I am running comsol on Ubuntu 16.04 and I have free space at other disks / partitions):īut I noticed, that comsol is not using the swap, but its own "out-of-core" memory file (if I understood that right).
Unable to read or write out-of-core file. At the point, where all of the free space is filled with the out-of-core file the calculation failes with following error:
COMSOL WITH MATLAB MPHINTERP OUT OF MEMORY COMSOL 5.3 PC
I have a 250GB SSD in my PC - the root directory (where Comsol is installed and the virtual memory is used) has now 20GB free space, which is not enough for the calculation. So the point I am stuck right now is the finest mesh: The study with the fine mesh needs MUMPS to switch to "out of core" mode and allocate a lot of virtual memory. I am currently trying to compare different mesh qualities and how the mesh affects the solution of the problem.
0 kommentar(er)
