SimGrid (3.5) unstable; urgency=low
- Msg
+ MSG
* New function: MSG_load_platform_script()
to make possible using a lua script instead of XML files to set up platforms
* New function: MSG_set_function
- to associate functions to processes, used when bypassing the parser
- Lua Bindings
- * add layer to set up environment and bypass the XML surf parser
- * modify the entry point, to take into consideration when lua is used only as a platform generator
+ to associate functions to processes, used when bypassing the parser
+
+ LUA Bindings
+ * Add layer to set up environment and bypass the XML surf parser
+ * Modify the entry point, to take into consideration when lua is used only as a platform generator
+
SURF
- * add new callbacks to the CPU & netwok models to create resources
+ * Change the XML format. This is a very important modification. SimGrid
+ 3.5 introduces a new hierarchical format based on the notion of
+ Autonomous Systems. Compatibility with old format is ensured
+ through the perl script provided in the install bin directory
+ bin/simgrid_update_xml.pl.
+ It is now possible to build platforms with specific routing
+ mechanism (Full/Dijkstra/DijkstraCache/Floyd) and to easily
+ connect several platforms together. We will try to provide soon
+ set of realistic platforms exploiting these properties (have a
+ look at examples/platforms/ for the moment).
+ * Add a new routing scheme (rule-based) using regular expressions. It
+ enables to have an extremely low memory footprint when the
+ underlying routing is simple and can be compactly described. You
+ need to have libpcre4-dev (perl regular expressions) installed if
+ you want to use this routing scheme.
+ * Revive the cluster TAG and allow to easily and efficiently (both in
+ term of memory and speed) connect clusters together. Have a look
+ at teshsuite/simdag/platforms/ to see how this can be done. With
+ this tag, you can create clusters with thousands of tasks at no
+ cost (have a look at examples/platforms/).
+ * Add new callbacks to the CPU & netwok models to create resources
no need to pass through the parser callbacks to do so.
- * add new function to create routes table via the routing model
- * add generic functions in the public interface
- that allows the user to call SURF 'create_resource' methods from a lua script.
- SIMIX :
- * New function: SIMIX_process_set_function()
- called by MSG_set_function
- SimDag
+ * Add new function to create routes table via the routing model
+ * Add generic functions in the public interface that allows the user to
+ call SURF 'create_resource' methods from a lua script.
+ * Add a new model (enabled through command line --cfg=network/model:SMPI)
+ that uses a piecewise linear approximation to produce better
+ results when exchanging small messages.
+ * Add a new parameter to handle correctly full duplex link and account
+ for interferences between uplink and downlink communications
+ (activate with --cfg=fullduplex:1).
+
+ SIMIX
+ * New function: SIMIX_process_set_function() called by MSG_set_function
+ * Change the underlying waiting queue in semaphores so that a process
+ can wait on several of them simultaneously (as in waitany).
+ * Fix the way to handle tokens in semaphores so that all access patterns
+ work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
+
+ SIMDAG
+ * Fix a bug in the management of tasks of size 0 in the surf network
+ models. This problem was only visible with SIMDAG and you should
+ thus disregard results produced with earlier versions if you
+ relied on this feature (some tasks were blocked because of this).
+ * Fix a bunch of stuff that prevented to use classical models with SIMDAG
+ even though your applications were doing only point-to-point
+ communications and sequential computations. Now you can really use any
+ model you want (of course, if you create real parallel tasks, which are
+ not implemented in most models beside ptaskL07, this will abort).
* Change the way a task is considered as ready. Instead of removing
dependencies when a task is done, a counter is decreased. This way,
it is always possible to reach ancestors thanks to the
format. This loader and the corresponding examples require the
installation of the graphviz library.
- SIMIX
- * Change the underlying waiting queue in semaphores so that a process
- can wait on several of them simultaneously (as in waitany).
- * Fix the way to handle tokens in semaphores so that all access patterns
- work: {acquire, acquire_timeout, waitany} / {release, release_forever}.
-
XBT
* New data container: setset (set of sets of elements)
* New module: mmalloc (mapped malloc)
* Introduce a 'make dist' target compiling a *source* archive
'make package' compiles a binary archive (not well tested)
* Compile java files only on need
+ * Add --cd and --setenv command line options to tesh
Tracing:
* Tracing system
* Bug fixing in failure management:
- trace could not start by a failure at time 0
- failure during communications were not working
-
+
SIMIX:
* Add SIMIX_process_set_name() to change the name of the current
process in the log messages.
