add papers referred to by @skamille

computer_architecture/README.md

@@ -0,0 +1,3 @@
+# Computer Architecture
+
+* [Piranha: A Scalable Architecture Based on Single-Chip Multiprocessing](http://barroso.org/publications/isca00.pdf)

distributed_systems/README.md

@@ -70,6 +70,8 @@
 
 * [The Byzantine Generals Problem](http://www.andrew.cmu.edu/course/15-749/READINGS/required/resilience/lamport82.pdf)
 
+* :scroll: [The Chubby Lock Service for Loosely-Coupled Distributed Systems](http://static.googleusercontent.com/media/research.google.com/en/us/archive/chubby-osdi06.pdf)
+
 * [The Dangers of Replication and a Solution](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.21.2707&rep=rep1&type=pdf)
 
 * [The Part-Time Parliament](http://research.microsoft.com/en-us/um/people/lamport/pubs/lamport-paxos.pdf)