Getting AtlasRep to work

[olexandr-konovalov]

AtlasRep package provides a link between GAP and the "ATLAS of Group Representations", a database that comprises generating permutations and matrices for many almost simple groups, and information about their maximal subgroups. This database is available independently of GAP athttp://brauer.maths.qmul.ac.uk/Atlas

To work, first of all this package need network access. Then installation instructions at http://www.math.rwth-aachen.de/~Thomas.Breuer/atlasrep/doc/chap4.html tells:

After unpacking the package archive, it should be checked whether the subdirectories datagens and dataword of the package directory have write permissions for those users who will download files from the servers. The recommended permissions under UNIX are set as follows.

you@unix> chmod 1777 atlasrep/data*
you@unix> ls -ld atlasrep/data*
drwxrwxrwt   3 you      you          1024 Oct 31 12:34 datagens
drwxrwxrwt   3 you      you          1024 Oct 31 12:34 dataword

We should follow instructions and run chmod in InstPackages.sh script.

[olexandr-konovalov]

This should be fixed in gap-system/gap-container#5. The other problem is that one should set up network access from the container - it should be documented how to do this and there is a TODO item for this in issue #7.

[sebasguts]

Is network access really a problem? I think on Linux systems it works out-of-the-box. Maybe the problem is OS X here?

[olexandr-konovalov]

This is Ubuntu. I think I need to use some option to start the container, but I don't know which. @snim2 do you have a pointer, please?

[sebasguts]

Try --net="host"