diff --git a/meshroom/core/desc.py b/meshroom/core/desc.py
index 05bb6d0a..68a7d4cf 100755
--- a/meshroom/core/desc.py
+++ b/meshroom/core/desc.py
@@ -1,4 +1,5 @@
 from meshroom.common import BaseObject, Property, Variant
+from enum import Enum  # available by default in python3. For python2: "pip install enum34"
 
 
 class Attribute(BaseObject):
@@ -105,10 +106,19 @@ class StringParam(Param):
         super(StringParam, self).__init__(label=label, description=description, value=value, uid=uid, group=group)
 
 
+class Level(Enum):
+    NONE = 0
+    NORMAL = 1
+    INTENSIVE = 2
+
+
 class Node(object):
     """
     """
     internalFolder = '{nodeType}/{uid0}/'
+    cpu = Level.NORMAL
+    gpu = Level.NONE
+    ram = Level.NORMAL
 
     def __init__(self):
         pass
diff --git a/meshroom/nodes/aliceVision/DepthMap.py b/meshroom/nodes/aliceVision/DepthMap.py
index 881b59b7..717a0856 100644
--- a/meshroom/nodes/aliceVision/DepthMap.py
+++ b/meshroom/nodes/aliceVision/DepthMap.py
@@ -3,6 +3,7 @@ from meshroom.core import desc
 class DepthMap(desc.CommandLineNode):
     internalFolder = '{cache}/{nodeType}/{uid0}/'
     commandLine = 'CMPMVS {mvsConfigValue} --createDepthmap'
+    gpu = desc.Level.INTENSIVE
 
     mvsConfig = desc.File(
             label='MVS Configuration file',
diff --git a/meshroom/nodes/aliceVision/DepthMapFilter.py b/meshroom/nodes/aliceVision/DepthMapFilter.py
index d4d5be62..acaffa37 100644
--- a/meshroom/nodes/aliceVision/DepthMapFilter.py
+++ b/meshroom/nodes/aliceVision/DepthMapFilter.py
@@ -3,6 +3,7 @@ from meshroom.core import desc
 class DepthMapFilter(desc.CommandLineNode):
     internalFolder = '{cache}/{nodeType}/{uid0}/'
     commandLine = 'CMPMVS {mvsConfigValue} --filterDepthmap'
+    gpu = desc.Level.NORMAL
 
     mvsConfig = desc.File(
             label='MVS Configuration file',
diff --git a/meshroom/nodes/aliceVision/Meshing.py b/meshroom/nodes/aliceVision/Meshing.py
index 9996ceab..d683db02 100644
--- a/meshroom/nodes/aliceVision/Meshing.py
+++ b/meshroom/nodes/aliceVision/Meshing.py
@@ -3,6 +3,8 @@ from meshroom.core import desc
 class Meshing(desc.CommandLineNode):
     internalFolder = '{cache}/{nodeType}/{uid0}/'
     commandLine = 'CMPMVS {mvsConfigValue} --meshing'
+    cpu = desc.Level.INTENSIVE
+    ram = desc.Level.INTENSIVE
 
     mvsConfig = desc.File(
             label='MVS Configuration file',
diff --git a/meshroom/nodes/aliceVision/Texturing.py b/meshroom/nodes/aliceVision/Texturing.py
index 23dd8eb4..474e1425 100644
--- a/meshroom/nodes/aliceVision/Texturing.py
+++ b/meshroom/nodes/aliceVision/Texturing.py
@@ -3,6 +3,8 @@ from meshroom.core import desc
 class Texturing(desc.CommandLineNode):
     internalFolder = '{cache}/{nodeType}/{uid0}/'
     commandLine = 'CMPMVS {mvsConfigValue} --texturing'
+    cpu = desc.Level.INTENSIVE
+    ram = desc.Level.INTENSIVE
 
     mvsConfig = desc.File(
             label='MVS Configuration file',