diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-1.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-1.json
index c65d92bd93ac55d7ca8ac3ede0fb0f7b75e17b7d..288f49b2e13be9d155b3e9f0b679fa4f6511f22e 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-1.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-1.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-1"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-10.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-10.json
index 29afa21b6eacc12eefd0f9ad3e72e30ef0e7f9db..d9a122ac7d25dfd4a6485d1ded8054afdc5e606e 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-10.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-10.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-10"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-11.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-11.json
index ff263a96ca1bfa3dda37ce99b5526fd7da5b3983..41af172d6dd448523ad675ead7e5fd8d48677c99 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-11.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-11.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-11"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-12.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-12.json
index a45cd75ec678fbf57efc2e4101cc023df0223277..4fc9dbe5ff0d8eadc5cd8d82dc9c84ca69052ff7 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-12.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-12.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-12"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-13.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-13.json
index 47f18af87c54274d23e5108666d96b66eba5964b..c23e25dcf2403c62aca5651ebf91f994cff6d679 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-13.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-13.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-13"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-14.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-14.json
index 7d8bbca9e9abd009c24b689c8650d2a1f1ad0146..02632d834b64d21f4f0a3248caa279d674de7fd1 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-14.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-14.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-14"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-15.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-15.json
index 7a1432d9f64797e63dd13f196f9a76f79b90912f..eb3812b19dc52f24d66ce2a9e3ddf67ea8ea9766 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-15.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-15.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-15"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-16.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-16.json
index ae893cbc55381c425f2396ca145cb6613479a926..5cfef46f89f5d86801a37112d0aba79700bd04b0 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-16.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-16.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-16"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-17.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-17.json
index 74629a6f6caa3f145c7b7c9eb6eae32b301106b8..e8c8eda865ad380e5541bcc54cdc58eb891744f6 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-17.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-17.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-17"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-18.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-18.json
index 3679a0b02234d0dc36b31b96103e6db6d6ffc236..d528364840ff6a3c6805cdfcead05ad399e4b8aa 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-18.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-18.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-18"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-19.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-19.json
index 8520c57cf3e6250ed02f115b09c605ad2c4781fa..0f3f38b5dfd615295818c0f3a4f5172e45f28a4e 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-19.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-19.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-19"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-2.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-2.json
index 691f6df5b68a83c874c8707215ee8ad73e0ed58e..41d8bcdc525552939072a6d0bae54a8e4617e71b 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-2.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-2.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-2"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-20.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-20.json
index 3164add25c5891287fd3015634f74fda83c568a5..1ce6662ba903da95bc16c36cd716afc3c1d81e87 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-20.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-20.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-20"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-3.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-3.json
index 260127b70d24513c1b7a4727612675e23c6ed147..4a9f90e73e8198ddd6ae75d1154d53dc6f720774 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-3.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-3.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-3"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-4.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-4.json
index b4d147786642435182c736d4a3b404a48db4ffb1..62abfa7a1216872e31fe9a591d55deca73744569 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-4.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-4.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-4"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-5.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-5.json
index ea03b1d58f970263ac606df049642402f4be4a2b..195ed29106c36ea4fe31391399918f109ef706bb 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-5.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-5.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-5"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-6.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-6.json
index 08879d396f0ed41943d516eae5f45c65573978fc..cbe5215774bfb5e9abad65393953ce601e30cbb4 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-6.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-6.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-6"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-7.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-7.json
index 4f761204127895946959a15abb324ef3f1d5a743..36c8092ff89760d66bdd0a0b25bcc242f33c76d6 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-7.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-7.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-7"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-8.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-8.json
index 7feb471c0a98ecca779a03a7eb178bf0bce7b7a7..8b4a3ffff588668610abd789c5b48af0976430f4 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-8.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-8.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-8"
diff --git a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-9.json b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-9.json
index 6520ea1d67f5a1e8212083e67d1da59fd5e19a44..c3d281526a0e0c651e64be522d7f793d079ed3f4 100644
--- a/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-9.json
+++ b/data/grid5000/sites/lille/clusters/chimint/nodes/chimint-9.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chimint-9"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-1.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-1.json
index bfbf9436741386691891e40b1993c75e96cc5e99..dd6e90693d243981d9b4a72fab900776ac4aec7f 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-1.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-1.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-1"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-2.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-2.json
index 38001410cc3b5d05fdeb79201501029401ec6824..4fd1574d728076fa2ee916a794f13d482178b830 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-2.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-2.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-2"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-3.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-3.json
index 699aa3a9ccbe97b7f4683ddbc39b3e3a0169fd6f..2eebf5bcb833d2cbd2fe3a7d3c5c7edde0cf101a 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-3.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-3.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-3"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-4.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-4.json
index f08f3bc742ea7799ba547a5e59dbee44b6db4f10..3db13fb61ec4aa0c30979c46a79987087e878492 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-4.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-4.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-4"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-5.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-5.json
index 18f649ce610b68c605e705df23efc0dd4777b563..ef4a36824f0d954b21d7ca897284148bafa4ed86 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-5.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-5.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-5"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-6.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-6.json
index 249d06613d9333fb9ed791b7a08255dd6ff5a851..cf79b716b6b443e8bfdf058ad6e9ec426191cad0 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-6.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-6.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-6"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-7.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-7.json
index 3e29c007b8cb7078cd3b7016d29759ee7eca3405..6cf099dffb5d8fc8e3d4eb8bbdc252a23ff2aa19 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-7.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-7.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-7"
diff --git a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-8.json b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-8.json
index 7440504e29c97e4cb0b52a129358ba3104d53ee1..e6b2411887705d373aecb21023c8fb04328ebbe4 100644
--- a/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-8.json
+++ b/data/grid5000/sites/lille/clusters/chirloute/nodes/chirloute-8.json
@@ -84,7 +84,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
-    "virtual": false
+    "virtual": "ivt"
   },
   "type": "node",
   "uid": "chirloute-8"
diff --git a/generators/input/lille.rb b/generators/input/lille.rb
index 13e31f8d8616eee1cdd12f568babfd7df99ee1b3..13d00469b90f55134ddc534d30c252999b418321 100755
--- a/generators/input/lille.rb
+++ b/generators/input/lille.rb
@@ -15,7 +15,7 @@ cluster :chirloute do |cluster_uid|
     created_at Time.parse("2011-03-25").httpdate
     8.times do |i|
       node "#{cluster_uid}-#{i+1}" do |node_uid|
-        supported_job_types({:deploy => true, :besteffort => true, :virtual => false})
+        supported_job_types({:deploy => true, :besteffort => true, :virtual => "ivt"})
         architecture({
           :smp_size => 2,
           :smt_size => 8,
@@ -101,7 +101,7 @@ cluster :chirloute do |cluster_uid|
     created_at Time.parse("2011-03-25").httpdate
     20.times do |i|
       node "#{cluster_uid}-#{i+1}" do |node_uid|
-        supported_job_types({:deploy => true, :besteffort => true, :virtual => false})
+        supported_job_types({:deploy => true, :besteffort => true, :virtual => "ivt"})
         architecture({
           :smp_size => 2,
           :smt_size => 8,