FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

About the development of the FEM module/workbench.

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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

Post by Thorhian »

twangrt wrote: Wed Feb 10, 2021 3:07 pm
johnwang wrote: Wed Feb 10, 2021 12:04 pm Single computer with multi cores, if you manage well, it should faster than single core.
Yes, of course. But most solvers are using multithreading, I thought "parallel" was a more unique method.
The whole concept of running code on multiple cores entails that they are running the code both concurrently and in parallel, meaning that multiple contexts of a program’s code is running at the same time literally. Multithreading entails parallel code execution if the hardware permits (a single core CPU can’t run two processes/threads in parallel all by itself).
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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

Post by bernd »

would someone give some pros and cons of this new workbench?
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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

Post by Aleks »

Can somebody make a benchmark comparing calculix and FEM-FrontISTR calculation time and results using the same mesh (maybe even multiple meshes with different mesh sizes)?
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Re: FEM_FrontISTR: A parallel nonlinear finite element analysis workbench for FreeCAD

Post by Eneen »

Hi,

Not sure if it's a right topic, please move if not.

Freecad 0.20 rev 26155 git
Windows 11.

I tried to run FEM_FrontISTR on provided bicycleframe freecad file. It misses mesh, so I made netgen mesh and tried to run analysis but all I've got is this error:
12:07:26 Check prerequisites.
12:07:26 Traceback (most recent call last):
12:07:26 File "C:\Users\Olo\AppData\Roaming\FreeCAD\Mod\FEM_FrontISTR\task_solver_fistrtools.py", line 326, in write_input_file_handler
12:07:26 if self.check_prerequisites_helper():
12:07:26 File "C:\Users\Olo\AppData\Roaming\FreeCAD\Mod\FEM_FrontISTR\task_solver_fistrtools.py", line 366, in check_prerequisites_helper
12:07:26 message = self.fea.check_prerequisites()
12:07:26 File "C:\Users\Olo\AppData\Roaming\FreeCAD\Mod\FEM_FrontISTR\fistrtools.py", line 260, in check_prerequisites
12:07:26 from femtools.checksanalysis import check_analysismember
12:07:26 ImportError: cannot import name 'check_analysismember' from 'femtools.checksanalysis' (C:\Program Files\FreeCAD\Mod\Fem\femtools\checksanalysis.py)
Do I do something wrong or is this a bug?
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