X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/952032b29340ce0fbea9cc8aaf76a2f821990c6d..8d2e1f8f1f50189bae187042ba931cf62e8fa895:/ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 0f79ebd67e..17aa1df1f3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,9 +2,29 @@
 
 SimGrid (3.28.1) NOT RELEASED YET (v3.29 expected September 22. 2021, 19:21 UTC)
 
+New features:
+ - Non-linear resource sharing: allows to dynamically change the resource
+   capacity. Users can change this capacity by setting a callback which will
+   be called when SimGrid is sharing the resource between the active
+   activities. An activity can be a task running, a read/write IO operation or a
+   communication flow.
+   - Callback signature: double (double capacity, int n_activities): given the
+     current resource's capacity and number of activities running on it,
+	 returns the new capacity.
+   - Note that this callback is in the critical path of the system solve and
+   should not take long to execute.
+   - Examples:
+     - Disk: examples/cpp/io-degradation
+	 - Link: examples/cpp/network-nonlinear
+	 - CPU: examples/cpp/exec-cpu-nonlinear
 
+S4U:
+ - New: s4u::Disk::set_sharing_policy() and s4u::Host::set_sharing_policy().
+   Allows the configuration of non-linear resource sharing for hosts and
+   disks.
 
-
+Documentation:
+  * New section "Release Notes" documenting recent and current developments.
 
 ----------------------------------------------------------------------------
 
@@ -96,12 +116,15 @@ Models:
    versions. Sorry for the inconvenience.
  - Dynamic network factors: users can configure a callback to define
    the network factors dynamically. This API is available at
- simgrid::kernel::resource::NetworkModelIntf.
+   simgrid::kernel::resource::NetworkModelIntf.
    - Users have access to complete information about the current communication
      to decide which factor to apply. This includes: message size, source and
-	 destination hosts, links and zones traversed.
+     destination hosts, links and zones traversed.
    - Dynamic factors for both latency and bandwidth.
    - For more details, see the example in (examples/cpp/network-factors).
+ - Plugin host_energy: the "watt_off" and "watt_per_state" host properties,
+   deprecated since version 3.24, are no longer supported. Instead, use
+   "wattage_off" and "wattage_per_state".
 
 XBT:
  - xbt_assert is not disabled anymore, even when built with enable_debug=off.