</source>
===Software=at cloud.sagemath.com======Is subversion available====
<source lang="bash">
~$ svn --version
</source>
====Is scons available====
<source lang="bash">
~$ which scons
</source>
====Is xmgrace available====
<source lang="bash">
~$ xmgrace
</source>
====Is mpirun available====
<source lang="bash">
~$ which mpicc