SimGrid (3.3-cvs) unstable; urgency=low
OVERALL CHANGES:
+
+ * JAVA BINDINGS for MSG (you dreamt of them? We made them)
+ [Malek Cherier & Mt]
+
+ * Introduce the SIMIX module: factorize code between MSG and GRAS.
+ [Bruno Donassolo]
+
+ Until now, GRAS were using MSG as an interface to SURF. It was
+ quite difficult because both interface have several differences
+ (MSG channels vs GRAS sockets were the most notable point).
+
+ This also opens the gate to SMPI (which should occur soon) and speed
+ up simulations by to 40% (even if it were not the main goal).
+
+ **************************************
+ *DO NOT MIX 3.2 RESULTS WITH 3.3 ONES* Simix may changes simulations!
+ **************************************
+ The point is that events occuring at the exact same timestamp are
+ not scheduled in the same order with the old and new version. This
+ may be enough to completely change the execution of simulations in
+ some cases. Sorry for the inconvenience.
+
+ * Improve the testing infrastructure with tesh. Now a very large part of
+ the code is tested not only by being run but also by checking that the
+ output match an expected output [Mt].
+
+ * Move on to FleXML v1.7 for the embeeded XML parsers. This version
+ is really less memory-demanding, which should allow you to use
+ larger files in SimGrid [AL].
+
+ GRAS:
+ * Convert the PIDs from long int to int to match the MSG ones (and
+ linux ones too) [Mt]
+ * New function: gras_agent_spawn() to launch a new process on
+ current host. Only working in simulation for now. [Mt]
+ * New function: gras_os_hostport() returning a constant form (ie,
+ not needing to be freed) of "gras_os_hostname():gras_os_myport()"
+
+ XBT:
* Make the backtrace of exceptions more human readable [Mt]
+ * New module: xbt/str [Mt]
+ a ton of string utility functions (split, join, printf to a newly
+ allocated buffer, trim, etc)
+ * New module: xbt/synchro [Mt]
+ synchronization tools (mutex and conditions) working the same way
+ in simulation and in real life (mainly useful for GRAS, but not
+ only).
+ * New module: xbt/queue [Mt]
+ classical producer/consumer synchronization scheme
+ * xbt_dynar_new_sync() creates a synchronized dynar. All access
+ (using the classical functions will get serialized) [Mt]
+
+ SURF:
+ * Cleaned many thing in surf and fixed a few bugs [AL].
+ * Add a nice command line configuration mechanism to compose models [AL].
+ * Add a new model for parallel tasks (ptask_L07) that is less buggy than
+ the previous one (KCCFLN05). It relies on something that looks like
+ a max-min sharing mechanism but cannot be written as such. A new solver
+ was thus designed [AL].
+ * Add a new solver to lmm. Based on Lagrange optimization and
+ gradient-based descent, it enables to efficiently maximise systems s.a
+
+ sum f_i(x_i) s.t Ax<= b with A_{i,j}>=0 and f_i a concave function.
+
+ This solver enables to propose two new network models for TCP Reno and
+ TCP Vegas based on Low's work. These models still need to be fully
+ tested though [Pedro Velho].
+
+ SIMDAG [AL]:
+ * Bug fix in SD_simulate. Now the time bound given as argument is
+ used.
+ * Use the new parallel task model (ptask_L07) as default.
+ * Use the SURF command line configuration mechanism.
+ * 0-size tasks (for synchronization) should now work.
--
OVERALL CHANGES:
* Port to windows.
- We still experience issues on this platform, but we belive that at
+ We still experience issues on this platform, but we believe that at
least MSG is usable.
GRAS API BREAKAGE (for simplification purpose, sorry):
