Rephrasing some XWCH description part.

diff --git a/xwch.tex b/xwch.tex
index 62039a2..4b7743e 100644 (file)
--- a/xwch.tex
+++ b/xwch.tex
@@ -8,16 +8,17 @@ class of systems are very tightly coupled and powerful but not very error
 tolerant. Cluster computing environments like Condor
 \cite{condor-practice} and volunteer computing systems like BOINC \cite{boinc} are loosely coupled and
 have a scheduler that distributes tasks to computing nodes. Cluster
 tolerant. Cluster computing environments like Condor
 \cite{condor-practice} and volunteer computing systems like BOINC \cite{boinc} are loosely coupled and
 have a scheduler that distributes tasks to computing nodes. Cluster

-computing environments assume that nodes are most often accessible
-which is not applies to volunteer computing systems.
+computing environments assume the fact that nodes are in general
+directly accessible, one to another, but this does not apply to
+volunteer computing systems.

 
 XtremWeb-CH (XWCH) is a volunteer computing inspired large-scale
 computing platform for distributed applications. In fact, it tends to
 be a good compromise between cluster computing and volunteer
 computing.  It is originaly based on another platform called XtremWeb
 
 XtremWeb-CH (XWCH) is a volunteer computing inspired large-scale
 computing platform for distributed applications. In fact, it tends to
 be a good compromise between cluster computing and volunteer
 computing.  It is originaly based on another platform called XtremWeb

- \cite{xtremweb}. It is easy to install and maintain and it is supported by a Grid
-middleware (ARC \cite{arc}) and a workflow engine (JOpera \cite{JOpera}).  It consists in
-three components: one coordinator, a set of workers and at least one
+ \cite{xtremweb}. It is easy to install, maintain, and it is supported by a Grid
+middleware (ARC \cite{arc}) and a workflow engine (JOpera \cite{JOpera}). It consists in
+three components: one coordinator, a set of workers, and at least one

 warehouse. Client programs use these components.
 
 The coordinator is the main component of the XWCH platform. It
 warehouse. Client programs use these components.
 
 The coordinator is the main component of the XWCH platform. It