• Management nodes: is the processing engine. A management node controls a
subset of VCL resources, which may be physical blade servers, traditional rack,
or virtual machines. It uses Linux/VCLD (perl)/image library solution. VCLD is
a middleware responsible to process reservations or jobs assigned by the VCL
web portal. According to type of environment requested, VCLD should assure
that service (computational environment) will be available to user