From: Martin Quinson <martin.quinson@loria.fr>
Date: Fri, 16 Jun 2017 23:13:52 +0000 (+0200)
Subject: new platform file, serving as a documentation to clusters
X-Git-Tag: v3.16~70
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/95a02e346b431b0594770dc363257e474326f91d

new platform file, serving as a documentation to clusters
---

diff --git a/examples/platforms/cluster.xml b/examples/platforms/cluster.xml
index 628427b129..4417517385 100644
--- a/examples/platforms/cluster.xml
+++ b/examples/platforms/cluster.xml
@@ -4,12 +4,16 @@
   <!--             _________
                   |          |
                   |  router  |
-      ____________|__________|_____________ backbone
+      ____________|__________|_____________ backbone link
         |   |   |              |     |   |  
       l0| l1| l2|           l97| l96 |   | l99
         |   |   |   ........   |     |   |
         |                                |
     node-0.acme.org                  node-99.acme.org
+
+    The route from node-0 to node-2 is: l0.UP ; backbone ; l2.DOWN
+
+    The route from node-0 to the outer world begins with: l0.UP ; backbone
   -->
   <cluster id="acme" prefix="node-" radical="0-99" suffix=".acme.org" speed="1Gf" bw="125MBps" lat="50us"
            bb_bw="2.25GBps"  bb_lat="500us"/>
diff --git a/examples/platforms/cluster_backbone.xml b/examples/platforms/cluster_backbone.xml
new file mode 100644
index 0000000000..36211cbec5
--- /dev/null
+++ b/examples/platforms/cluster_backbone.xml
@@ -0,0 +1,92 @@
+<?xml version='1.0'?>
+<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd">
+<platform version="4.1">
+  <zone id="world" routing="Full">
+  <!-- this platform models 3 clusters, interconnected over the Internet
+    --
+    -- This example intends to be somewhat exhaustive, your platform should probably be simpler.
+    --
+    -- In particular, the clusters are modeled in very different ways,
+    -- but you should pick the way you prefer, and stick to it.
+    -->
+
+  <!-- Here comes the first cluster, the simplest one.
+     
+       Every nodes are connected through a private link to a router
+       (ie a machine that cannot host computations).
+  
+       node-0.1core.org --[l0]--
+                                \
+       node-1.1core.org --[l1]-- router -- (outer world)
+                ...             /
+       node-7.1core.org --[l9]--
+
+ 
+       So the route from node-0 to node-1 is {l0.UP, l1.DOWN}
+    -->
+  <cluster id="simple" prefix="node-" radical="0-7" suffix=".1core.org" speed="1Gf" bw="125MBps" lat="50us" />
+
+
+  <!-- This second cluster has a backbone link, connecting all private links:
+
+       node-0.2cores.org --[l0]-------+
+                                     |
+       node-1.2cores.org --[l1]--[backbone]-- router -- (outer world)
+                ...                  |
+       node-7.2cores.org --[l7]-------+
+
+
+    The route from node-0 to node-1 is: l0.UP ; backbone ; l1.DOWN
+    
+    The route from node-0 to the outer world begins with: l0.UP ; backbone
+  -->    
+  <cluster id="backboned" prefix="node-" radical="0-7" suffix=".2cores.org"
+              speed="1Gf"       core="2" 
+	      bw="125MBps"      lat="50us"
+           bb_bw="2.25GBps"  bb_lat="500us"/>
+	   
+
+  <!-- This cluster has a backbone link, but no links are fullduplex.
+    -- It means that up and down communications compete as if they
+    -- were using exactly the same resource. If you send and receive
+    -- at the same time, then each get half of the bandwidth.
+    --
+    -- Also, the hosts have 4 cores.
+    -->
+  <cluster id="halfduplex" prefix="node-" radical="0-7" suffix=".4cores.org" speed="1Gf" core="4"
+              bw="125MBps"      lat="50us"     sharing_policy="SHARED"
+	   bb_bw="2.25GBps"  bb_lat="500us" bb_sharing_policy="SHARED" />
+
+
+  <!-- And now, we create the routes between the clusters, ie inter-zone routes -->
+  
+  <!-- We have only one outer link, representing the internet 
+    -- Its sharing is FATPIPE, meaning that communications have no impact on each others.
+    -- Any given comm can use the full provided bandwidth. 
+    --
+    -- This models the big links constituting the backbone of the internet, 
+    -- that users cannot saturate. 
+    -- Users' bandwidth is mostly limited by their outgoing connexion,
+    -- not by the network backbone. -->
+
+    <link id="backbone" bandwidth="1.25GBps" latency="500us" sharing_policy="FATPIPE"/>
+
+    <zoneRoute src="simple" dst="backboned" 
+               gw_src="node-simple_router.1core.org"
+               gw_dst="node-backboned_router.2cores.org">
+      <link_ctn id="backbone" />
+    </zoneRoute>
+
+    <zoneRoute src="simple" dst="halfduplex" 
+               gw_src="node-simple_router.1core.org"
+               gw_dst="node-halfduplex_router.4cores.org">
+      <link_ctn id="backbone" />
+    </zoneRoute>
+    
+    <zoneRoute src="backboned" dst="halfduplex" 
+               gw_src="node-backboned_router.2cores.org"
+               gw_dst="node-halfduplex_router.4cores.org">
+      <link_ctn id="backbone" />
+    </zoneRoute>
+</zone>
+</platform>
diff --git a/examples/platforms/two_clusters.xml b/examples/platforms/two_clusters.xml
deleted file mode 100644
index 29ec619177..0000000000
--- a/examples/platforms/two_clusters.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version='1.0'?>
-<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd">
-<platform version="4.1">
-<!--                  _________________________________________
-                 ____|_____                                    |
-                |          |                                   |
-                |  router1 |                                   |
-    ____________|__________|_____________ backbone1            |
-      |   |   |              |     |   |                       | backbone
-    l0| l1| l2|            l7|   l8|   |l9                     |
-      |   |   |   ........   |     |   |                       |
-      |                                |                       |
-node-0.acme.org                     node-9.acme.org            |
-                     __________________________________________|
-                 ___|______
-                |          |
-                |  router2 |
-    ____________|__________|_____________ backbone2
-      |   |   |              |     |   |  
-   l10|l11|l12|           l17| l18 |   | l19
-      |   |   |   ........   |     |   |
-      |                                |
-node-10.acme.org               node-19.acme.org -->
-
-  <zone id="AS0" routing="Full">
-    <cluster id="my_cluster_1" prefix="node-" suffix=".acme.org" radical="0-9" speed="1Gf" 
-             bw="125MBps" lat="50us" bb_bw="2.25GBps" bb_lat="500us" />
-
-    <cluster id="my_cluster_2" prefix="node-" suffix=".acme.org" radical="10-19" speed="1Gf" 
-             bw="125MBps" lat="50us" bb_bw="2.25GBps" bb_lat="500us" />
-
-    <link id="backbone" bandwidth="1.25GBps" latency="500us" />
-
-    <zoneRoute src="my_cluster_1" dst="my_cluster_2" gw_src="node-my_cluster_1_router.acme.org"
-             gw_dst="node-my_cluster_2_router.acme.org">
-      <link_ctn id="backbone" />
-    </zoneRoute>
-  </zone>
-</platform>
diff --git a/tools/cmake/DefinePackages.cmake b/tools/cmake/DefinePackages.cmake
index d07023604b..54e622333b 100644
--- a/tools/cmake/DefinePackages.cmake
+++ b/tools/cmake/DefinePackages.cmake
@@ -1064,6 +1064,7 @@ set(PLATFORMS_EXAMPLES
   examples/platforms/bypassRoute.xml
   examples/platforms/cloud.xml
   examples/platforms/cluster.xml
+  examples/platforms/cluster_backbone.xml
   examples/platforms/cluster_and_one_host.xml
   examples/platforms/cluster_prototype.lua
   examples/platforms/cluster_no_backbone.xml
@@ -1120,7 +1121,6 @@ set(PLATFORMS_EXAMPLES
   examples/platforms/syscoord/median_meridian.syscoord
   examples/platforms/syscoord/median_p2psim.syscoord
   examples/platforms/three_multicore_hosts.xml
-  examples/platforms/two_clusters.xml
   examples/platforms/two_hosts.xml
   examples/platforms/two_hosts_platform_shared.xml
   examples/platforms/two_hosts_platform_with_availability.xml