defoarcmd_create_node(host,properties,node_hash)# host = grifffon-1.nancy.grid5000.fr; properties, node_hash: input of the reference API for the node
#return "# Cannot create #{host} : not enough information about it (node_hash['architecture']['smp_size'], properties['cpucore'])" if node_hash['architecture'].nil? || properties['cpucore'].nil?
#return "# Cannot create #{host} : not enough information about it (node_hash['architecture']['nb_procs'], properties['cpucore'])" if node_hash['architecture'].nil? || properties['cpucore'].nil?