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authorEelco Dolstra <e.dolstra@tudelft.nl>2004-05-13T19·14+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2004-05-13T19·14+0000
commita8306cb98ff920b38db5e5bbfcbe71bb36859b3f (patch)
tree9e4d1c694140b49582dee517206005644e2557d8 /distributed/remote-systems.conf
parent5087c8f645cf971ee6dfd11c5c56c6b2b752d7ad (diff)
* The build hooks used to implement distributed builds can now be run
  in parallel.  Hooks are more efficient: locks on output paths are
  only acquired when the hook says that it is willing to accept a
  build job.  Hooks now work in two phases.  First, they should first
  tell Nix whether they are willing to accept a job.  Nix guarantuees
  that no two hooks will ever be in the first phase at the same time
  (this simplifies the implementation of hooks, since they don't have
  to perform locking (?)).  Second, if they accept a job, they are
  then responsible for building it (on the remote system), and copying
  the result back.  These can be run in parallel with other hooks and
  locally executed jobs.

  The implementation is a bit messy right now, though.  

* The directory `distributed' shows a (hacky) example of a hook that
  distributes build jobs over a set of machines listed in a
  configuration file.
  

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diff --git a/distributed/remote-systems.conf b/distributed/remote-systems.conf
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@@ -0,0 +1,2 @@
+scratchy.labs.cs.uu.nl   i686-linux     /home/eelco/.ssh/id_scratchy_auto       2
+mckroket.labs.cs.uu.nl   powerpc-mac    /home/eelco/.ssh/id_scratchy_mckroket   1