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by tom
Thu Dec 01, 2016 7:02 pm
Forum: Forum in Deutsch
Topic: Featurerequest Sketcher: partielle Bestimmtheit
Replies: 13
Views: 1225

Re: Featurerequest Sketcher: partielle Bestimmtheit

Hallo, Ich finde die Grundidee nicht schlecht, auch wenn sie sich wahrscheinlich nicht ganz so einfach realisieren lässt. Soweit ich die Sketcher-Implemenation aus den Diskussionen hier im Forum verstanden habe, werden alle Constraints derzeit in ein großes Gleichungssystem gepackt, welches dann num...
by tom
Sun Oct 23, 2016 10:32 am
Forum: Help on using FreeCAD
Topic: FreeCAd 16 crashes when opening a file
Replies: 14
Views: 1496

Re: FreeCAd 16 crashes when opening a file

Yes, building on the target machine considers the capabilities of the build machine. Thus it turns off the SSE optimization.
by tom
Sun Oct 23, 2016 1:28 am
Forum: Help on using FreeCAD
Topic: FreeCAd 16 crashes when opening a file
Replies: 14
Views: 1496

Re: FreeCAd 16 crashes when opening a file

Two ways lead to success:
* I extracted the lib coin from an older working FreeCAD bundle and replaced the library in the new bundle by that older library.
* Last week I managed to compile FreeCAD using the updated homebrew recipe.
by tom
Sat Oct 22, 2016 8:34 pm
Forum: Help on using FreeCAD
Topic: FreeCAd 16 crashes when opening a file
Replies: 14
Views: 1496

Re: FreeCAd 16 crashes when opening a file

This is the same bug as described in thread viewtopic.php?f=4&t=16238. The reason for the crash is the libcoin is compiled with SSE optimization that is not supported by some processors used in older Macs.
by tom
Wed Aug 31, 2016 12:02 am
Forum: Users Showcase
Topic: Inventing wheels.. with built-in suspension =p
Replies: 79
Views: 25731

Re: Inventing wheels.. with built-in suspension =p

That is a very cool project! How about using the FEM workbench in order to find the most stressed points?
by tom
Mon Jul 11, 2016 6:59 pm
Forum: Install / Compile
Topic: Installing 0.16 on Mac OS El Capitan
Replies: 5
Views: 2817

Re: Installing 0.16 on Mac OS El Capitan

Ok, I found it: insertps was introduced with SSE4.1, which is not supported by the Intel Xeon 5150 of the MacPro1,1

Regards,
Thomas
by tom
Mon Jul 11, 2016 6:32 pm
Forum: Install / Compile
Topic: Installing 0.16 on Mac OS El Capitan
Replies: 5
Views: 2817

Re: Installing 0.16 on Mac OS El Capitan

I dug a bit deeper into the problem. At least I can confirm that the crash is caused by following SSE instruction: 000000003f0383d5 insertps $0x10, %xmm1, %xmm0 ## xmm0 = xmm0[0],xmm1[0],xmm0[2,3] I have another libCoin.dylib on my system (coming from homebrew), which does not have that SSE instruct...
by tom
Tue Jun 28, 2016 4:36 pm
Forum: IFC
Topic: IFC import
Replies: 96
Views: 23054

Re: IFC import

Thank you for the hint with the build script. Will try it this evening.
by tom
Mon Jun 27, 2016 10:14 pm
Forum: IFC
Topic: IFC import
Replies: 96
Views: 23054

Re: IFC import

Hmm, I gave up compiling the IfcOpenShell on an OS X machine after 3 hours. It seems to me that I have to live without a IFC import for a while.

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