Changes between Version 1 and Version 2 of AdaptiveReplication

Timestamp:

Aug 6, 2008, 4:49:15 PM (16 years ago)

Author:

davea

Comment:

--

AdaptiveReplication

@@ -1 +1 @@
 = Adaptive replication =
 
-BOINC's current replication policy replicates a job even if
+BOINC's default replication policy replicates a job even if
 one of the hosts is known to be highly reliable.
 The overhead of replication is high - at least 50% of total CPU time
@@ -18 +18 @@
  * It is initialized to 0.1
  * It is multiplied by 0.95 when H reports a correct (replicated) result.
- * It is incremented by 0.05 when H reports an incorrect (replicated) result.
+ * It is incremented by 0.1 when H reports an incorrect (replicated) result.
 
 Thus, it takes a long time to earn a good reputation
@@ -32 +32 @@
  * Otherwise, preferentially send it replicated jobs.  If we have to send it an unreplicated job, mark it as replicated and create new instances accordingly.
 
+== Using adaptive replication ==
+
+To use adaptive replication for a given app:
+
+ * Set app.target_nresults to 2 in the database.
+ * Create jobs with target_nresults=1 and min_quorum=1.
+
 == Implementation ==