FEM on Mac OSX

About the development of the FEM module/workbench.

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Johnquicker
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One Temporary Solution for FEM on Mac OSX with gcc version Problem

Postby Johnquicker » Tue Dec 11, 2018 8:31 am

@chrisb have summarized how to install Calculix-ccx on Mac here.
Those instructions are clear and helpful for me. But I have encountered the same problems as @Locost reported here. He checked ccx in terminal as advised by @bernd:
Locost wrote:
Mon May 07, 2018 10:18 am
I also tried running it in terminal (ie ./usr/local/Cellar/calculix-ccx/2.13/bin/ccx_2.13) and got something similar
./ccx_2.13

Code: Select all

dyld: Library not loaded: /usr/local/opt/gcc/lib/gcc/7/libgfortran.4.dylib
  Referenced from: /usr/local/Cellar/calculix-ccx/2.13/bin/./ccx_2.13
  Reason: image not found
Abort trap: 6
I did the same and got the same messages. @bernd thought
bernd wrote:
Mon May 07, 2018 6:45 pm
NO not python, somthing seams wrong with your CalculiX binary ccx.
and @christ kindly provide his compiled ccx binary here. But it was solved by @Locost himself as described here:
Locost wrote:
Fri May 11, 2018 4:22 am
I solved the problem although I'm not sure how.
I decided to try installing CalculiX using the outdated install guide on the CalculiX website <http://www.dhondt.de/INST_CCX_2_8_MAC_02_10_2015.pdf>. The install wasn't successful (it threw an error while making CalculiX). However before having a second go at the install I tried chrisb's files again and the solver worked. My best guess is I changed something related to solvers dependencies SPOOLES and ARPACK.
Actually @Locost is right. Our gcc version is 8, but this ccx binary is compiled with version gcc of version 7. If we provide the missed lib files, ccx_2.13 will work as expected.
Here is what I did, by referencing @vicnorton here.

Code: Select all

$ ccx_2.13
dyld: Library not loaded: /usr/local/opt/gcc/lib/gcc/7/libgfortran.4.dylib
  Referenced from: /usr/local/bin/ccx_2.13
  Reason: image not found
Abort trap: 6
$ cd /usr/local/opt
$ sudo mv gcc gcc8
$ brew install gcc@7
$ cd /usr/local/opt
$ sudo ln -s /usr/local/Cellar/gcc@7/7.3.0 gcc
$ ccx_2.13
dyld: Library not loaded: /usr/local/opt/gcc/lib/gcc/8/libgfortran.5.dylib
  Referenced from: /usr/local/opt/arpack/libexec/lib/libarpack.2.dylib
  Reason: image not found
Abort trap: 6
$ sudo cp -r /usr/local/Cellar/gcc/8.2.0/lib/gcc/8 /usr/local/Cellar/gcc@7/7.3.0/lib/gcc/
$ ccx_2.13
Usage: CalculiX.exe -i jobname
It worked, and I got the colored FEM results finally.
Image

I think this hack solution is temporary, because this problem should be solved more elegantly by:
  1. Provide new package in brewsci/science tap, However it has anounced no maintainace anymore.
  2. "$ brew reinstall calculix-ccx --build-from-source" in one's own machine with new gcc version. However the process finally "make *** [calculix-ccx] Error 1" but providing issue on that repository seems useless.
  3. MacPorts have been one way to install Calculix, as @ian.rees posted here years ago. I didn't try it, but I have read through that topic. It sounds exciting, and I hope he would come back to MacPort. ;)
    ian.rees wrote:
    Wed Mar 02, 2016 10:43 am
    I've been messing around over the last few evenings with making a port for CalculiX (the FEM program that FreeCAD uses) - would be great to get a bit of testing from people who have an interest in using FreeCAD on Macs! This just involves:

    1 Cloning a small git repository https://github.com/ianrrees/macports
    2 Pointing MacPorts at the git repository https://guide.macports.org/#development ... positories
    3 Running "sudo port install calculix" and noting any issues
    4 If it works you should be able to run ccx and see something like "Usage: CalculiX.exe -i jobname"

    I haven't had a chance to verify the dependencies yet; I've got it set to use gcc5 currently, but can probably use older versions too. Thanks! -Ian-
    ---
    OS: Mac OS X
    Word size of OS: 64-bit
    Word size of FreeCAD: 64-bit
    Version: 0.17.13541 (Git)
    Build type: Release
    Branch: releases/FreeCAD-0-17
    Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb
    Python version: 2.7.14
    Qt version: 5.10.1
    Coin version: 4.0.0a
    OCC version: 7.2.0
    Locale: English/UnitedStates (en_US)
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Kunda1
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Re: FEM on Mac OSX

Postby Kunda1 » Tue Dec 11, 2018 5:30 pm

CalculiX is currently on version 2.14
The brewsci Homebrew tap doesn't look maintained.
Perhaps we can organize someone(s) here in the community to be in charge of a Homebrew formula?
Currently CalculiX downstream packaging is being tracked at
https://github.com/luzpaz/FreeCAD-depen ... /issues/30
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bobmel
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Re: FEM on Mac OSX

Postby bobmel » Sat Jan 12, 2019 12:18 pm

I have compiled CalculiX v2.15 with gcc 8.2.0 on macOS High Sierra in case someone else is interested.

A binary can be downloaded here: https://www.dropbox.com/s/vf6s896m0f4jdhs/ccx_2.15?dl=0

Word of caution: I'm a complete FEM newbie and I have only run a few of the tests provided with CalculiX so NO guarantees the binary works perfectly.

I've also created a repository on Github: https://github.com/bobmel/CalculiX where the modified code can be found.
kinichii
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Re: FEM on Mac OSX

Postby kinichii » Mon Jan 14, 2019 5:49 am

bobmel wrote:
Sat Jan 12, 2019 12:18 pm
A binary can be downloaded here: https://www.dropbox.com/s/vf6s896m0f4jdhs/ccx_2.15?dl=0
Thanks.
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Kunda1
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Re: FEM on Mac OSX

Postby Kunda1 » Mon Jan 14, 2019 1:12 pm

bobmel wrote:
Sat Jan 12, 2019 12:18 pm
I have compiled CalculiX v2.15 with gcc 8.2.0 on macOS High Sierra in case someone else is interested.
In that case, would you be interested, in helping CalculiX and other FEM/FEA solvers in to the macos package ecosystem by submitting them to package managers like Homebrew or Macports ?
Checkout:
https://github.com/luzpaz/FreeCAD-depen ... hes/FEM.md
https://github.com/luzpaz/FreeCAD-depen ... /issues/20

Of course please also check out FreeCAD's homebrew taps as well: https://github.com/FreeCAD/homebrew-freecad
Those guys can also use some help.
Want to contribute back to FC? Checkout:
#lowhangingfruit | Use the Source, Luke. | How to Help FreeCAD | How to report FC bugs and features
bobmel
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Joined: Wed Mar 14, 2018 9:28 am

Re: FEM on Mac OSX

Postby bobmel » Tue Jan 15, 2019 9:46 pm

Kunda1 wrote:
Mon Jan 14, 2019 1:12 pm
bobmel wrote:
Sat Jan 12, 2019 12:18 pm
I have compiled CalculiX v2.15 with gcc 8.2.0 on macOS High Sierra in case someone else is interested.
In that case, would you be interested, in helping CalculiX and other FEM/FEA solvers in to the macos package ecosystem by submitting them to package managers like Homebrew or Macports ?
Checkout:
https://github.com/luzpaz/FreeCAD-depen ... hes/FEM.md
https://github.com/luzpaz/FreeCAD-depen ... /issues/20

Of course please also check out FreeCAD's homebrew taps as well: https://github.com/FreeCAD/homebrew-freecad
Those guys can also use some help.
I’ll see what I can do. Creating one based on the existing v2.13 one in Homebrew/brewsci seems like fairly low hanging fruit.
ian.rees
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Re: One Temporary Solution for FEM on Mac OSX with gcc version Problem

Postby ian.rees » Fri Feb 01, 2019 4:05 am

Johnquicker wrote:
Tue Dec 11, 2018 8:31 am
[*] MacPorts have been one way to install Calculix, as @ian.rees posted here years ago. I didn't try it, but I have read through that topic. It sounds exciting, and I hope he would come back to MacPort. ;)
That's very unlikely. My (programming, mostly) job has been keeping me too busy, and have been using Linux as my main OS for a few months (admittedly, a struggle with current Ubuntu and an nvidia-driven 4K screen - it nearly caught fire yesterday), and before that got totally burned out on MacPorts. Unless things have changed greatly in recent history, you're really better off with Homebrew...
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Kunda1
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Re: FEM on Mac OSX

Postby Kunda1 » Mon Feb 04, 2019 9:31 pm

Can folks :+1: this comment: https://github.com/Homebrew/homebrew-co ... -459008392 please?
Reason: Show the homebrew devs that there is a MacOS userbase that would benefit from having CalculiX in Homebrew
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twangrt
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Re: FEM on Mac OSX

Postby twangrt » Sun Apr 28, 2019 7:21 pm

bobmel wrote:
Sat Jan 12, 2019 12:18 pm
I have compiled CalculiX v2.15 with gcc 8.2.0 on macOS High Sierra in case someone else is interested.

A binary can be downloaded here: https://www.dropbox.com/s/vf6s896m0f4jdhs/ccx_2.15?dl=0

Word of caution: I'm a complete FEM newbie and I have only run a few of the tests provided with CalculiX so NO guarantees the binary works perfectly.

I've also created a repository on Github: https://github.com/bobmel/CalculiX where the modified code can be found.
Thank you for providing the binary! Works well what I can tell.

OS: Mac OS X
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.13541 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb
Python version: 2.7.14
Qt version: 5.10.1
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/Sweden (en_SE)