Simplify the computer science overview

data/cs.md

@@ -20,10 +20,12 @@ Cosmological simulations are typically very hard to scale to large
 numbers of cores, due to the fact that information is needed from each
 of the nodes to perform a given time-step. SWIFT uses smart domain
 decomposition, vectorisation, and asynchronous communication to
-provide a 36.7x speedup over the de-facto standard (the publicly
-available GADGET-2 code) and near-perfect weak scaling even on
-problems larger than presented in the published astrophysics
-literature.
+provide a 7x speedup over the Gadget code when running a typical
+EAGLE-like cosmological simulation. It also presents near-perfect weak
+scaling even on the largest problems  presented in the published
+astrophysics literature.
+
+<!--
 
 ![SWIFT Scaling Plot](scalingplot.png) The left panel ("Weak Scaling")
 shows how the run-time of a problem changes when the number of threads
@@ -36,6 +38,7 @@ of the [EAGLE](http://adsabs.harvard.edu/abs/2014ApJS..210...14K)
 simulation at late time where the hierarchy of time-steps is very deep
 and where most other codes struggle to harvest any scaling or performance.
 
+-->
 
 ## I/O performance
 
@@ -44,20 +47,3 @@ efficiently on distributed file systems. Through careful tuning of
 Lustre parameters, SWIFT can write snapshots at the maximal disk
 writing speed of a given system.
 
-
-### Logger
-
-In SWIFT, we developed a new way of writing the information contained in 
-snapshots (Hausammann and Gonnet (in prep.)).
-In cosmological  simulations, the time scale of the different particles
-can differ by a few order of magnitudes.
-This technique reduces the data entropy by writing the particles according
-to their own time scale.
-SWIFT is able this way to increase the time resolution of the output while
-keeping the files to a decent size.
-
-<div class="videowrapper"><iframe width="100%" height="100%" src="https://www.youtube.com/embed/6aBry0CUgVw" frameborder="0" allowfullscreen></iframe>
-</div>
-
-<div class="videowrapper"><iframe width="100%" height="100%" src="https://obswww.unige.ch/~lhausamm/movies/logger_cosmo.mp4" frameborder="0" allowfullscreen></iframe>
-</div>