[pypy-commit] extradoc extradoc: add intro to intro

[fijal]

Author: Maciej Fijalkowski <fijall at gmail.com>
Branch: extradoc
Changeset: r5522:e35d13a2125b
Date: 2015-03-30 16:24 +0200
http://bitbucket.org/pypy/extradoc/changeset/e35d13a2125b/

Log:	add intro to intro

diff --git a/blog/draft/stm-mar2015.txt b/blog/draft/stm-mar2015.txt
--- a/blog/draft/stm-mar2015.txt
+++ b/blog/draft/stm-mar2015.txt
@@ -12,6 +12,14 @@
 
     http://pypy.readthedocs.org/en/latest/stm.html
 
+PyPy is an implementation of the Python programming language which focuses
+on performance. So far we've been relentlessly optimizing for the single
+core/process scenario. PyPy STM brings to the table a version of PyPy
+that does not have the infamous Global Interpreter Lock, hence can run
+multiple threads on multiple cores. Additionally it comes with a set
+of primitives that make writing multithreaded applications a lot easier,
+see the documentation for details.
+
 This is a special version of PyPy that contains the "Software
 Transactional Memory" (STM) plug-in called stmgc-c7.  It gives a
 replacement for Python's classical Global Interpreter Lock (GIL).  The