Changes between Version 12 and Version 13 of PDAD_Applications

Timestamp:

Jan 14, 2010, 2:55:18 PM (14 years ago)

Author:

cristina.basescu

Comment:

--

PDAD_Applications

@@ -34 +34 @@
 == MPI ==
 
-The MPI approach is a low level one, where not only computation, but also explicit communication needs to be done. 
+The MPI approach is a low level one, where not only computation, but also explicit communication needs to be done.
+
+For the d. application, one node will be the master and will establish what should be done and who should do it and the other will be slaves. The master divides the event_trace file into equal chunks and gives the slaves indexes from where each should read in a round-robin manner in an asynchronous manner. The master avoids the overhead of reading the whole file, however this means the slaves should first go from the first offset to the end of a line and then start reading. The slaves process each chunk and send a vector having all the combinations for job duration classification and failure cause having associated the number of failures registered. The master sums all the vectors it receives also in an asynchronous manner and if it doesn't receive anything for 10s, it stops the execution. 
 
 TODO Claudiu for his apps