[petsc-dev] Seeking OLCF users complaining about poor build times

Satish Balay balay at mcs.anl.gov
Thu Feb 26 20:53:16 CST 2015

On Thu, 26 Feb 2015, Nathan Collier wrote:

> Ok, so I am not sure I got all that, but here goes some more information
> (attached log).
> No packages / master
> [nate at titan] time python no_packages.py
> ...
> real 14m32.169s
> user 1m51.527s
> sys 3m40.734s
> [nate at titan] time make all
> ...
> real 15m56.004s
> user 8m8.971s
> sys 52m42.734s

BTW: This number for 'make all' looks bizzare [or I don't know how to interpret it].

- 'sys' time is 52m?
- 'user' time is 8m - but 'real' is 15m - so its not a parallel build?
   But configure sets 'MAKE_NP = 24' (with gnumake build).

Perhaps its all intel compiler license server overhead? :)


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