Joel Holdsworth said: (by the date of Thu, 5 Dec 2019 18:41:05 +0000) > Should Eigen be pre-built as a PCH? I would imagine that could speed > things up a lot.
I experimented with precompiled headers. It is not worth the hassle. Especially because sometimes gcc does not recognize that they are out of date, which resulted in super-weird build errors. I found out that ccache is much more robust and reliable. > On 12/5/19 6:36 PM, Janek Kozicki (yade) wrote: > > Hi, > > > > I am developer of YADE, https://gitlab.com/yade-dev and I want to add > > high precision support in our entire codebase. Unfortunately I have > > been getting eigen segfaults in my tests. More about that in another email. > > > > I want to talk a little about your gitlab migration :) > > > > I use libeigen since roughly 2007. That's the first time however when > > I need to fix something in libeigen, and I can't do that without a > > working CI. The simplest compilation in gitlab-CI pipeline for me is > > to use the debian build scripts. And I created a > > super-simple .gitlab-ci, just to see a working pipeline: > > > > https://gitlab.com/cosurgi/eigen/merge_requests/1 > > https://gitlab.com/cosurgi/eigen/pipelines/100984912 > > > > All tests passed (around line 3480): > > https://gitlab.com/cosurgi/eigen/-/jobs/370818226#L3481 > > > > you might want to have a look at eiher that small simple .gitlab-ci > > in that branch, or the full-blown .gitlab-ci which I use in yade all > > the time: > > > > https://gitlab.com/yade-dev/trunk/blob/master/.gitlab-ci.yml > > https://gitlab.com/yade-dev/trunk/pipelines/100789929 > > > > I am using ccache for yade compilation, it speeds up things really a > > lot. I did the same thing in that small .gitlab-ci which I prepared for my > > tests of libeigen. > > > > I triggered a second libeigen compilation. The first one took 1hour. The > > second one, thanks to ccache took only 14 minutes: > > > > https://gitlab.com/cosurgi/eigen/pipelines/100999796 > > https://gitlab.com/cosurgi/eigen/pipelines > > > > best regards > > Janek Kozicki > > > > > > > > > -- -- Janek Kozicki, PhD. DSc. Arch. Assoc. Prof. Gdańsk University of Technology Faculty of Applied Physics and Mathematics Department of Theoretical Physics and Quantum Information -- http://yade-dem.org/ http://pg.edu.pl/jkozicki (click English flag on top right)
