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Build Netgen on Linux (CentOS)

2 years 3 months ago #4053 by point41
Hi Matthias,

How has the work on pip-packages been going? Is it possible to try it? I am still having problems on CentOS/Redhat and would like to see if pip might help

Thanks very much,

2 years 3 months ago #4058 by matthiash
Hi Valery,

There is some progress on the pip packages, we will announce them, once there are no (known) issues on our side anymore.

In the meantime you may try the (preliminary) builds on test.pypi:
pip3 install mkl pip3 install -i ngsolve==6.2.2105.dev126

Note, that this package may be removed at any time.

2 years 3 months ago #4059 by point41
Hi Matthias,

thanks, this worked well on one of my Kubuntu 20.04 machines. Didn't work on another one with the same OS and same python3 version Python 3.8.10. The error messages are below in case it might be useful. Any idea why it worked on one but not the other machine?

In a similar way, I have been having inconsistent results running ngsolve/netgen that I built under either Kubuntu or CentOS. In general, it works on the machine I built it on, but when I copy ngsolve-install to other machines it works on some but doesn't on others. When it doesn't work, I get "Illegal instruction (core dumped)". When I run it under gdb, the crash is reported in regexp (I can provide more specifics if you like). Any ideas what may be causing this and why it varies from machine to machine?

Thanks very much,


pip3 install -i
e/ ngsolve==6.2.2105.dev126
Looking in indexes:
Collecting ngsolve==6.2.2105.dev126
86_64.manylinux2014_x86_64.whl (28.3 MB)
    |████████████████████████████████| 28.3 MB 1.0 MB/s  
Collecting netgen-mesher==6.2.2105.dev45
_17_x86_64.manylinux2014_x86_64.whl (37.9 MB)
    |████████████████████████████████| 37.9 MB 350 kB/s  
ERROR: Could not find a version that satisfies the requirement mkl==2021.* (from ngsolve
==6.2.2105.dev126) (from versions: none)                                                 
ERROR: No matching distribution found for mkl==2021.* (from ngsolve==6.2.2105.dev126)
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