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To: gentoo-cluster@lists.gentoo.org
Subject: [gentoo-cluster] eselect-mpi issues
X-url: http://www.nas.nasa.gov/~bgreen/
Date: Thu, 12 Jun 2008 11:28:55 -0700
From: Bryan Green <bryan.d.green@nasa.gov>
Message-Id: <20080612182855.17D522395D0@ece06.nas.nasa.gov>
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Hello,

I'm beginning to give empi/eselect-mpi a try.  Bravo, Justin, for making
these!

I've run into one bug in eselect-mpi that effects csh users (a popular
shell where I work).  There is simply one setenv line that has bash syntax
rather than csh syntax.  I already submitted a bug: its bug 226105.
Here is the patch to fix it:

================================================
--- files/mpi.eselect-0.0.3     (revision 1137)
+++ files/mpi.eselect-0.0.3     (working copy)
@@ -161,7 +161,7 @@
 setenv PATH "${binpath}"
  setenv MANPATH "${manpath}"
   setenv LD_LIBRARY_PATH "${lld}"
   -setenv ESELECT_MPI_IMP="${1}"
   +setenv ESELECT_MPI_IMP "${1}"
    EOF
     
          echo "Remember to source ${user_ev_sh} or ${user_ev_csh}"
================================================

Also, in the README file, the for loop in step 6 is incorrect:

for i in $(ls ${HOME}/.env.d/*); do
    source ${HOME}/.env.d/${i}
done

Results in:

-bash: /home/bgreen/.env.d//home/bgreen/.env.d/mpi.csh: No such file or directory
-bash: /home/bgreen/.env.d//home/bgreen/.env.d/mpi.sh: No such file or directory


On the system where I'm using empi, I've created files in /etc/profile.d to
source the user's .env.d files when they log in.  What do you think about
having the eselect-mpi ebuild install these, so mpi users dont have to do
that part manually?  They would instead just have to source /etc/profile or
/etc/csh.login after running 'eselect mpi'.


Here are my versions of the files in /etc/profile.d:

==============
mpi-config.sh
==============
if [ -d ${HOME}/.env.d ]; then
    for i in ${HOME}/.env.d/*.sh ; do
        . "${i}"
    done
    unset i
fi

==============
mpi-config.csh
==============
if ( -d ${HOME}/.env.d ) then
    set nonomatch
    foreach i ( ${HOME}/.env.d/*.csh )
        source ${i}
    end
    unset i nonomatch
endif

==============

-bryan

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