[aspect-devel] A step-by-step ASPECT installation workflow on linux machine.

[Timo Heister]

Just a quick comment browsing the instructions:

I would like to discourage compiling MPI by yourself. On workstations
you should be able to install it from your package manager (OpenMPI or
mpich) without problems and on clusters MPI is already installed.

Reasons against installing it by yourself:
- it is difficult and time consuming
- if some other MPI library is already installed (or part of it, say
the binaries only) or will be installed later, your application will
break in weird ways. (at compile time, when launching, or even just
crashing randomly). Mixing MPI libraries is a common problem.
- You will have a very hard time configuring MPI correctly for your
machine, especially if you are on a supercomputer with special
interconnect. Additionally, there are many tuning parameters that the
sysadmins are better at picking. In the best case it will be orders of
magnitude slower, in the worst case it will also (randomly) fail.

In summary: don't compile MPI yourself if you can avoid it.



On Sat, May 23, 2015 at 3:46 PM, Wolfgang Bangerth <bangerth at tamu.edu> wrote:
>
> [Forwarded to the mailing list for Shangxin Liu <sxliu at vt.edu>]
>
> Hi everyone,
>
> We make a detailed aspect installation workflow as the attachment, which has
> been tested to work quite well for Trilinos version not higher than 11.12.
> Hopefully it will be helpful for the future ASPECT installation on linux
> machine.
>
> Best regards,
>
> --
> Shangxin Liu
>
> PhD Student
> Geodynamics Group
> Department of Geosciences
> Virginia Tech
>
>
>
>
>
> --
> Shangxin Liu
>
> PhD Student
> Geodynamics Group
> Department of Geosciences
> Virginia Tech
>
>
>
>
>
> _______________________________________________
> Aspect-devel mailing list
> Aspect-devel at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/aspect-devel



-- 
Timo Heister
http://www.math.clemson.edu/~heister/