Avoid infinite loop when the nbasmax is already fine.

Truncate.py

@@ -72,9 +72,13 @@ class trunc:
                   with open("check.out","a+") as foo: 
                       foo.write("Step 1 iter. {0}, maxops: {1}->max_bas : {2}\n".format(i, self.max_ops_num, max_bas))
                   INFO("Step 1 iter. {0}, maxops: {1}->max_bas : {2}".format(i, self.max_ops_num, max_bas))
+            if max_bas < self.nbasmax:
+                break
             i+=1
             hydrosuper.fetch(part)
             comm.Barrier()
+            if max_bas <= self.nbasmax:
+               break
         
         # Step 2 : HTUs going to the same neighbour
         i = 1    
@@ -107,7 +111,9 @@ class trunc:
                comm.Barrier()
                hydrosuper.fetch(part)
                #comm.Barrier()
-           i += 1 
+           i += 1
+           if max_bas <= self.nbasmax:
+              break
 
          
         # Step 3 : HTUs with the same ID          
@@ -138,7 +144,9 @@ class trunc:
                   INFO("Step 3 iter. {0} (halo) maxops: {1}->max_bas : {2}".format(i, self.max_ops_num_halo, max_bas))
                hydrosuper.fetch(part)
                comm.Barrier()
-           i += 1         
+           i += 1  
+           if max_bas <= self.nbasmax:
+              break       
 
         
         # Step 4 : HTUs going to the same point
@@ -155,6 +163,8 @@ class trunc:
             hydrosuper.fetch(part)
             comm.Barrier()
             i += 1
+            if max_bas <= self.nbasmax:
+               break
 
                 
         # Step 5 : Brutal method