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Docs for modules & dotkits.

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Todd Gamblin 2014-10-27 01:31:53 -07:00
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lib/spack/docs/basic_usage.rst
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@ -657,3 +657,170 @@ add a version specifier to the spec:
Notice that the package versions that provide insufficient MPI Notice that the package versions that provide insufficient MPI
versions are now filtered out. versions are now filtered out.
.. _shell-support:
Interactive Shell Support
-------------------------------
Spack provides some limited shell support to make it easier to use the
packages it provides. You can enable shell support by sourcing some
files in the ``/share/spack`` directory.
For ``bash`` or ``ksh``, run::
. $SPACK_ROOT/share/spack/setup-env.sh
For ``csh`` and ``tcsh`` run:
setenv SPACK_ROOT /path/to/spack
source $SPACK_ROOT/share/spack/setup-env.csh
You can put the above code in your ``.bashrc`` or ``.cshrc``, and
Spack's shell support will be available on the command line.
Environment Modules
-------------------------------
.. note::
Environment module support is currently experimental and should not
be considered a stable feature of Spack. In particular, the
interface and/or generated module names may change in future
versions.
When you install a package with Spack, it automatically generates an
environment module that lets you add the package to your environment.
Currently, Spack supports the generation of `TCL Modules
<http://wiki.tcl.tk/12999>`_ and `Dotkit
<https://computing.llnl.gov/?set=jobs&page=dotkit>`_. Generated
module files for each of these systems can be found in these
directories:
* ``$SPACK_ROOT/share/spack/modules``
* ``$SPACK_ROOT/share/spack/dotkit``
The directories are automatically added to your ``MODULEPATH`` and
``DK_NODE`` environment variables when you enable Spack's `shell
support <shell-support_>`_.
Using Modules & Dotkits
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If you have shell support enabled you should be able to run either
``module avail`` or ``use -l spack`` to see what modules/dotkits have
been installed. Here is sample output of those programs, showing lots
of installed packages.
.. code-block:: sh
$ module avail
------- /g/g21/gamblin2/src/spack/share/spack/modules/chaos_5_x86_64_ib --------
adept-utils@1.0%gcc@4.4.7-5adef8da libelf@0.8.13%gcc@4.4.7
automaded@1.0%gcc@4.4.7-d9691bb0 libelf@0.8.13%intel@15.0.0
boost@1.55.0%gcc@4.4.7 mpc@1.0.2%gcc@4.4.7-559607f5
callpath@1.0.1%gcc@4.4.7-5dce4318 mpfr@3.1.2%gcc@4.4.7
dyninst@8.1.2%gcc@4.4.7-b040c20e mpich@3.0.4%gcc@4.4.7
gcc@4.9.1%gcc@4.4.7-93ab98c5 mpich@3.0.4%gcc@4.9.0
gmp@6.0.0a%gcc@4.4.7 mrnet@4.1.0%gcc@4.4.7-72b7881d
graphlib@2.0.0%gcc@4.4.7 netgauge@2.4.6%gcc@4.9.0-27912b7b
launchmon@1.0.1%gcc@4.4.7 stat@2.1.0%gcc@4.4.7-51101207
libNBC@1.1.1%gcc@4.9.0-27912b7b sundials@2.5.0%gcc@4.9.0-27912b7b
libdwarf@20130729%gcc@4.4.7-b52fac98
.. code-block:: sh
$ use -l spack
spack ----------
adept-utils@1.0%gcc@4.4.7-5adef8da - adept-utils @1.0
automaded@1.0%gcc@4.4.7-d9691bb0 - automaded @1.0
boost@1.55.0%gcc@4.4.7 - boost @1.55.0
callpath@1.0.1%gcc@4.4.7-5dce4318 - callpath @1.0.1
dyninst@8.1.2%gcc@4.4.7-b040c20e - dyninst @8.1.2
gmp@6.0.0a%gcc@4.4.7 - gmp @6.0.0a
libNBC@1.1.1%gcc@4.9.0-27912b7b - libNBC @1.1.1
libdwarf@20130729%gcc@4.4.7-b52fac98 - libdwarf @20130729
libelf@0.8.13%gcc@4.4.7 - libelf @0.8.13
libelf@0.8.13%intel@15.0.0 - libelf @0.8.13
mpc@1.0.2%gcc@4.4.7-559607f5 - mpc @1.0.2
mpfr@3.1.2%gcc@4.4.7 - mpfr @3.1.2
mpich@3.0.4%gcc@4.4.7 - mpich @3.0.4
mpich@3.0.4%gcc@4.9.0 - mpich @3.0.4
netgauge@2.4.6%gcc@4.9.0-27912b7b - netgauge @2.4.6
sundials@2.5.0%gcc@4.9.0-27912b7b - sundials @2.5.0
The names here should look familiar, they're the same ones from
``spack find``. You *can* use the names here directly. For example,
you could type either of these:
.. code-block:: sh
use callpath@1.0.1%gcc@4.4.7-5dce4318
module load callpath@1.0.1%gcc@4.4.7-5dce4318
And they would work fine. However, that is not particularly pretty,
easy to remember, or easy to type.
Luckily, Spack has its own interface for using modules and dotkits.
You can use the same spec syntax you're used to:
Modules:
* ``spack load <spec>``
* ``spack unload <spec>``
Dotkit:
* ``spack use <spec>``
* ``spack unuse <spec>``
And you can use the same shortened names you use everywhere else in
Spack. For example:
.. code-block:: sh
$ spack install mpich %gcc@4.4.7
# ... wait for install ...
$ spack use mpich%gcc@4.4.7
Prepending: mpich@3.0.4%gcc@4.4.7 (ok)
$ which mpicc
~/src/spack/opt/chaos_5_x86_64_ib/gcc@4.4.7/mpich@3.0.4/bin/mpicc
Or, similarly with modules:
$ spack load mpich %gcc@4.4.7
The generated files will add appropriate directories to you ``PATH``,
``MANPATH``, and ``LD_LIBRARY_PATH`` to assist you and other programs
with finding the libraries you've installed.
You can unuse/unload packages similarly.
These commands are only available if you have enabled Spack's shell
support, but they allow you to use Spack's abbreviated names for
packages to get them into your environment.
Ambiguous module names
~~~~~~~~~~~~~~~~~~~~~~~~
If a spec used with load/unload or use/unuse is ambiguous (i.e. more
than one installed package matches it), then Spack will warn you:
.. code-block:: sh
$ spack load libelf
==> Error: Multiple matches for spec libelf. Choose one:
libelf@0.8.13%gcc@4.4.7=chaos_5_x86_64_ib
libelf@0.8.13%intel@15.0.0=chaos_5_x86_64_ib
You can either type the ``spack load`` command again with a fully
qualified argument, or you can add just enough extra constraints to
identify one package. For example, above, the key differentiator is
that one ``libelf`` is built with the Intel compiler, while the other
used ``gcc``. You could therefore just type:
.. code-block:: sh
$ spack load libelf %intel
To identify just the one built with the Intel compiler.