From: Augustin Degomme <adegomme@gmail.com>
Date: Fri, 6 Mar 2020 13:56:41 +0000 (+0100)
Subject: Update changelog for loopback changes.
X-Git-Tag: v3.26~796
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/47cc4e3b45fa686f4f8ab76cb6a2c4e23b111eca

Update changelog for loopback changes.
I did set this as important, but we might move it if it's not.
---

diff --git a/ChangeLog b/ChangeLog
index f56f70db83..4823482603 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,12 @@ Important user-visible changes:
    timings if simulation was skipping a lot of small events (which was actually
    an issue of said simulation). The value can still be changed back using
    --cfg=surf/precision:1e-5.
+ - On some network models (L07, CM02, LV08), an implicit loopback link is created
+   for local communication. Default bandwidth was 500MMps and latency was 15µs,
+   which was rather bad. Default values have been changed to 10GBps and 0 latency.
+   Options network/loopback-lat and network/loopback-bw have been added to adapt
+   these values if needed. Network and routing models already providing separate
+   loopbacks (clusters and such) are not impacted by this change.
 
 General:
  - LTO is now enabled for Intel/clang compilers.