docs: add blurb about math optimizations to installation guide

doc/source/installation.rst

@@ -50,6 +50,9 @@ In order to check your installation, you can use:
     $ conda list gstlal-inspiral  # to check which version is installed
     $ gstlal_play --help
 
+.. warning::
+   These packages don't make use of any :ref:`math optimizations <install-math_optimizations>`
+   and is not currently recommended for production or larger-scale analyses.
 
 .. _install-igwn:
 
@@ -176,3 +179,18 @@ directory, done at the configure step, e.g.
 .. code:: bash
 
     $ ./configure --prefix /usr
+
+
+.. _install-math_optimizations:
+
+Math-optimized Libraries
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+GstLAL relies heavily on Linear Algebra and FFT routines to drive various
+signal-processing components within the library. Being able to accelerate these
+math-heavy routines which rely on BLAS with MKL considerably improves performance
+and introduces significant speedups. The containers
+that are available via Docker and Singularity are linked against MKL to take
+advantage of these optimizations. There is no additional work needed from the user.
+
+Work is ongoing to provide Conda packages to allow for similar optimizations.