--- /dev/null
+#! /usr/bin/perl
+
+# L.Bobelin (Perl newbie) 25th of November
+# Quick script to generate hierarchical clusters. Usage : <the script> p s d where :
+# - p : 2^p gives the total number of hosts.
+# - s : cluster size
+# - d : degree of inner nodes.
+#
+# output is the standard one.
+#
+#
+#Each node is numbered by a DFS in the tree. Each cluster is numbered by the DFS number of the leaf it is attached to and the number of cluster for each leaf.
+# Other infos :
+# - Same bb_lat used for any routers inside (not that complicated to modify too).
+# - constants defined in the first part of the script corresponding to classic cluster parameters. links_bw and links_lat added for the inner tree links
+# - bb_lat and bb_bw used in any backbone of the tree.
+# - fails if you set an obviously too small total number of hosts compared to the cluster size (generates a lot of stuff for nothing actually).
+#
+
+use Math::BigInt;
+
+$prefix= "";
+$suffix= "";
+$bw= "125000000";
+$power= "1000000000";
+$lat= "5E-5";
+$bb_bw= "2250000000";
+$bb_lat= "5E-4";
+$links_bw= "2250000000";
+$links_lat= "5E-5";
+$id= "";
+
+$p = $ARGV[0];
+$s = $ARGV[1];
+$d = $ARGV[2];
+
+$p = Math::BigInt->new($p);
+$d = Math::BigInt->new($d);
+$s = Math::BigInt->new($s);
+
+$cabinetnodes= $d;
+$nbsons= $d;
+$radical= "1-" . $s;
+$last=$s;
+
+# Number of clusters to generate ? Update: I hate this bigInt package, the way it behaves is SO stupid
+$totalnumberofhosts = Math::BigInt->new("2");
+$totalnumberofhosts->bpow($p);
+
+$totalnumberofCluster= $totalnumberofhosts->copy();
+
+$totalnumberofCluster->bdiv($s);
+
+# checking if we have to have something non homogeneous
+if ($totalnumberofhosts->copy()->bmod($s) != 0 )
+ {
+ $totalnumberofCluster++;
+ $last= $totalnumberofhosts->copy()->bmod($s);
+ }
+
+# Calculating height
+
+$height= $totalnumberofCluster->copy();
+$height->broot($d);
+
+# Checking if an exact root exists
+if ( $height->bcmp(Math::BigInt->new("1")) != 0 && ($height->copy()->bpow($d))->bcmp($totalnumberofCluster)) {
+
+ $height++; #will have to deal with empty set of clusters.
+ }
+# debug stuff
+#print "Computed : \n";
+#print STDERR "height: " . $height . "\n";
+#print STDERR "totalnumberofhosts: " . $totalnumberofhosts . "\n";
+#print STDERR "totalnumberofcluster: " . $totalnumberofCluster . "\n";
+#print STDERR "last cluster size (if equals to cluster size, then all clusters will be homogeneous) : " . $last . "\n";
+
+# Counter for giving unique IDs to ASes.
+$ASnumber;
+$ASnumber = 0;
+
+# Printing preamble
+print "<?xml version='1.0'?>\n";
+print "<!DOCTYPE platform SYSTEM \"http://simgrid.gforge.inria.fr/simgrid.dtd\">\n";
+print "<platform version=\"3\">\n";
+
+
+# Initiate recursion ...
+&DF_creation(0);
+
+# Closing tag, and then back home
+print "</platform>\n";
+
+# Recursive stuff for depth first Se... Creation
+sub DF_creation {
+ my($currDepth) = @_;
+
+ # Curr AS creation
+ print "<AS id=\"". $prefix . "AS_" . $ASnumber . $suffix . "\" routing=\"Full\">\n";
+
+ # Curr router AS creation stuff
+ print "<AS id=\"". $prefix . "exitAS_" . $ASnumber . $suffix . "\" routing=\"Full\">\n";
+ print " <router id=\"" . $prefix . "router_" . $ASnumber . $suffix . "\"/>\n";
+ print "</AS>\n";
+ # Saving my current number to return it to my father
+ my $toReturn = $ASnumber;
+ $ASnumber++;
+ if ($currDepth<$height && $totalnumberofCluster > 0)
+ {
+ # Creating current AS inner stuff
+ # I should have a table of sons numbers.
+ my @tsons = ();
+ my $createdSons = 0;
+ for (my $i =1; $i<=$nbsons && $totalnumberofCluster > 0 ; $i++)
+ {
+ #saving this son in my tab ... recursive call to create ASes and cluster underneath
+ push(@tsons, &DF_creation($currDepth + 1));
+ $createdSons++;
+ #
+ # Creating link to this son
+ print "<link id=\"". $prefix . $tsons[$i-1] . $suffix . "\" bandwidth=\"" . $links_bw . "\" latency=\"" . $links_lat . "\"/>\n";
+ }
+ # curr backbone creation
+ print "<link id=\"". $prefix . "bb_" . $toReturn . $suffix . "\" bandwidth=\"" . $bb_bw . "\" latency=\"" . $bb_lat . "\"/>\n";
+ # Full routing AS to AS declaration
+ for (my $i =1; $i<=$createdSons ; $i++)
+ {
+ for (my $j =$i+1; $j<=$createdSons ; $j++)
+ {
+ print "<ASroute src=\"" . $prefix . "AS_" . $tsons[$i-1] . $suffix . "\"\n";
+ print " dst=\"" . $prefix . "AS_" . $tsons[$j-1] . $suffix . "\"\n";
+ print " gw_src=\"" . $prefix . "router_" . $tsons[$i-1] . $suffix . "\"\n";
+ print " gw_dst=\"" . $prefix . "router_" . $tsons[$j-1] . $suffix . "\"\n";
+ print " symmetrical=\"YES\">\n";
+
+ print " <link_ctn id=\"" . $prefix . $tsons[$i-1] . $suffix . "\"/>\n";
+ print " <link_ctn id=\"" . $prefix . "bb_" . $toReturn . $suffix . "\"/>\n";
+ print " <link_ctn id=\"" . $prefix . $tsons[$j-1] . $suffix . "\"/>\n";
+ print "</ASroute>\n";
+ }
+ }
+ # Now routes to the exit AS
+ for (my $i =1; $i<=$createdSons ; $i++)
+ {
+ print "<ASroute src=\"" . $prefix . "AS_" . $tsons[$i-1] . $suffix . "\"\n";
+ print " dst=\"" . $prefix . "exitAS_" . $toReturn . $suffix . "\"\n";
+ print " gw_src=\"" . $prefix . "router_" . $tsons[$i-1] . $suffix . "\"\n";
+ print " gw_dst=\"" . $prefix . "router_" . $toReturn . $suffix . "\"\n";
+ print " symmetrical=\"YES\">\n";
+ print " <link_ctn id=\"" . $prefix . $tsons[$i-1] . $suffix . "\"/>\n";
+ print " <link_ctn id=\"" . $prefix . "bb_" . $toReturn . $suffix . "\"/>\n";
+ print "</ASroute>\n";
+ }
+ print "</AS>\n";
+ # DO I have extra stuff to add ? I don't think so.
+ return $toReturn;
+ }
+ else { # On leaves,
+ my $lastNumberOfClusterCreated = 0;
+ #I must create clusters now
+ for(my $i = 1; $i <= $cabinetnodes && $totalnumberofCluster>0 ; $i++) {
+ $lastNumberOfClusterCreated++;
+ if ($totalnumberofCluster==1)
+ {
+ print "<cluster id=\"". $prefix . "cl_" . $toReturn . "_" . $i . $suffix . "\" prefix=\"" . $prefix . "c_" . $toReturn . "_" . $i . "-\" suffix=\"" . $suffix . "\" radical=\"1-"
+ . $last . "\" power=\"" . $power . "\" bw=\"" . $bw . "\" lat=\"" . $lat . "\" bb_bw=\"" . $bb_bw . "\" bb_lat=\"" . $bb_lat . "\"/>\n";
+ }
+ else
+ {
+ print "<cluster id=\"". $prefix . "cl_" . $toReturn . "_" . $i . $suffix . "\" prefix=\"" . $prefix . "c_" . $toReturn . "_" . $i . "-\" suffix=\"" . $suffix . "\" radical=\""
+ . $radical . "\" power=\"" . $power . "\" bw=\"" . $bw . "\" lat=\"" . $lat . "\" bb_bw=\"" . $bb_bw . "\" bb_lat=\"" . $bb_lat . "\"/>\n";
+ }
+ $totalnumberofCluster--;
+ }
+ # Creating links to clusters
+ for(my $i = 1; $i <= $lastNumberOfClusterCreated ; $i++) {
+ print "<link id=\"". $prefix . $toReturn . "_" . $i . $suffix . "\" bandwidth=\"" . $links_bw . "\" latency=\"" . $links_lat . "\"/>\n";
+ }
+
+ #
+ # curr backbone creation
+ print "<link id=\"". $prefix . "bb_" . $toReturn . $suffix . "\" bandwidth=\"" . $bb_bw . "\" latency=\"" . $bb_lat . "\"/>\n";
+
+ # I must create routes between clusters now
+ for (my $i =1; $i<=$lastNumberOfClusterCreated ; $i++)
+ {
+ for (my $j =$i+1; $j<=$lastNumberOfClusterCreated ; $j++)
+ {
+ print "<ASroute src=\"" . $prefix . "cl_" . $toReturn . "_" . $i . $suffix . "\"\n";
+ print " dst=\"" . $prefix . "cl_" . $toReturn . "_" . $j . $suffix . "\"\n";
+
+ print " gw_src=\"" . $prefix . "c_" . $toReturn . "_" . $i . "-" . $prefix . "cl_" . $toReturn . "_" . $i . $suffix . "_router" . $suffix ."\"\n";
+ print " gw_dst=\"" . $prefix . "c_" . $toReturn . "_" . $j . "-" . $prefix . "cl_" . $toReturn . "_" . $j . $suffix . "_router" . $suffix . "\"\n";
+ print " symmetrical=\"YES\">\n";
+
+ print " <link_ctn id=\"" . $prefix . $toReturn. "_" . $i . $suffix . "\"/>\n";
+ print " <link_ctn id=\"" . $prefix . "bb_" . $toReturn . $suffix . "\"/>\n";
+ print " <link_ctn id=\"" . $prefix . $toReturn . "_" . $j . $suffix . "\"/>\n";
+ print "</ASroute>\n";
+ }
+ }
+ # Now routes to the exit AS
+ for (my $i =1; $i<=$lastNumberOfClusterCreated ; $i++)
+ {
+ print "<ASroute src=\"" . $prefix . "cl_" . $toReturn . "_" . $i . $suffix . "\"\n";
+ print " dst=\"" . $prefix . "exitAS_" . $toReturn . $suffix . "\"\n";
+ # SAME HERE !!
+ print " gw_src=\"" . $prefix . "c_" . $toReturn . "_" . $i . "-" . $prefix . "cl_" . $toReturn . "_" . $i . $suffix . "_router" . $suffix ."\"\n";
+ print " gw_dst=\"" . $prefix . "router_" . $toReturn . $suffix . "\"\n";
+ print " symmetrical=\"YES\">\n";
+ print " <link_ctn id=\"" . $prefix . $toReturn . "_" . $i . $suffix . "\"/>\n";
+ print " <link_ctn id=\"" . $prefix . "bb_" . $toReturn . $suffix . "\"/>\n";
+ print "</ASroute>\n";
+ }
+ print "</AS>\n";
+ # Should be done with it...
+ return $toReturn;
+ }
+
+}
