Changes between Version 5 and Version 6 of MultiSize

Timestamp:

Feb 26, 2014, 3:03:41 PM (10 years ago)

Author:

davea

Comment:

--

MultiSize

@@ -14 +14 @@
 
 To address this, BOINC provides a mechanism
-that tries to match large jobs to fast devices.
+that tries to send large jobs to fast devices
+and small jobs to slow devices.
 
 == How it works ==
@@ -24 +25 @@
 and how large the jobs of a given size class are.
 
-The BOINC scheduler maintains statistics about the "effective speed" of devices for each multi-size app,
+A '''size_census''' script periodically computes
+statistics about the "effective speed" of devices for each multi-size app,
 where effective speed is the device speed times host availability.
 In particular, it computes and maintains the boundaries of the N quantiles.
 
-When a host requests for a particular device,
+When a host requests work for a particular device,
 the scheduler computes its quantile for each multi-size application.
 It preferentially sends it jobs of the corresponding size class.
@@ -57 +59 @@
 Don't forget to set wu.rsc_fpops_est and wu.rsc_fpops_bound appropriately as well.
 
-You may want your work generator to maintain a supply of
-jobs of each size class.
+You may want your work generator to maintain a supply of jobs of each size class.
 To find the number of unsent jobs of a given size class, use
 {{{
@@ -66 +67 @@
 == Daemon configuration ==
 
-Arrange to periodically run '''size_census.php''',
-which computes effective speed statistics:
+The script '''size_census.php''' computes effective speed statistics for multi-size apps,
+and writes them to flat files (named '''size_census_APPNAME''') in the project directory.
+Arrange to run it periodically by putting the following in your config.xml:
 {{{
     <task>
@@ -75 +77 @@
     </task>
 }}}
+
+If you run the script with the '''--all_apps''' option, it will compute the statistics
+of all apps, not just multi-size ones.
+This is useful when you're getting things set up.
 
 For each multi-size app, you must run a daemon '''size_regulator'''
@@ -109 +115 @@
 <matchmaker>1</matchmaker>
 }}}
+