Method for implementing a task in a supercomputer, associated computer program and supercomputer

A method (300) for deploying a task in a computer cluster forming a supercomputer comprising:

• computers (102, 104) each having at least one network interface forming a node (1 16);
• and
• a network (110) for interconnecting the nodes (1 16), comprising:
• switches (1.1 4.8) each having network interfaces, and
• links (114) each connecting either a node (1 16) and a network interface of one switch (1.1 1.8) or two network interfaces of two switches (2.1 4.8) respectively;
• the method (300) comprising:
• the deployment of the task in the supercomputer, this deployment comprising:
• allocating (310) nodes (1 16) to the task,
• determining (312), in the network (110), a subnetwork, of interconnection of allocated nodes, meeting one or more pre-defined determination criteria,
• allocating (314) the subnetwork, and in particular, the links belonging to this subnetwork, to the task, and
• implementing (316) inter-node communication routes in the allocated subnetwork;
• and
• executing (304) the task;
• the method (300) being characterized in that it further comprises:
• at the end of the execution of the task:
• detecting (322) at least one link that is not allocated to any task, and
• setting (324) each detected link in an idle state, wherein the link requires less energy consumption than a link associated with at least one task.