Distinction sync/Async

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@@ -823,7 +823,10 @@ this model, the faster and more frequently a task receives its
 dependencies, the faster it converges. Moreover, as the JaceP2P-V2
 environment is fault tolerant and tasks save checkpoints on their
 neighbors, it is more efficient to save on near nodes than on far
 dependencies, the faster it converges. Moreover, as the JaceP2P-V2
 environment is fault tolerant and tasks save checkpoints on their
 neighbors, it is more efficient to save on near nodes than on far

-ones.
+ones. In the synchronous model, both heterogeneity and locality must
+be taken into account in a balanced way. In the asynchronous model,
+since no synchronizations occurs, the heterogeneity issue is less
+important.

 
 
 %As our problem is on task mapping, only considering the dependency
 
 
 %As our problem is on task mapping, only considering the dependency