System and method for efficient virtualization in lossless interconnection networks

A method for supporting efficient virtualization in a lossless interconnection network, comprising:

• providing, at one or more computers, including one or more microprocessors, one or more microprocessors;
• one or more switches, the one or more switches comprising at least a leaf switch, wherein each of the one or more switches comprise a plurality of ports;
• a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, and wherein the plurality of host channel adapters are interconnected via the one or more switches;
• a plurality of hypervisors, wherein each of the plurality of hypervisors are associated with at least one host channel adapter of the plurality of host channel adapters, and
• a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function, wherein the plurality of virtual machines are grouped into a first set of virtual machines and a second set of virtual machines;
• assigning each of the virtual switches a pLID of a plurality of pLIDs, the assigned pLID corresponding to a pLID of an associated physical function;
• and
• assigning each of the virtual machines of the first set of virtual machines a vLID of a plurality of vLIDs;
• assigning at least two of the virtual machines of the second set of virtual machines a same vLID of the plurality of vLIDs;
• and
• wherein an LID space comprises the plurality of pLIDs and the plurality of vLIDs.

A non-transitory computer readable storage medium, including instructions stored thereon for supporting efficient virtualization in a lossless interconnection network which when read and executed by one or more computers cause the one or more computers to perform steps comprising:

• providing, at one or more computers, including one or more microprocessors, one or more microprocessors;
• one or more switches, the one or more switches comprising at least a leaf switch, wherein each of the one or more switches comprise a plurality of ports;
• a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, and wherein the plurality of host channel adapters are interconnected via the one or more switches;
• a plurality of hypervisors, wherein each of the plurality of hypervisors are associated with at least one host channel adapter of the plurality of host channel adapters, and
• a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function, wherein the plurality of virtual machines are grouped into a first set of virtual machines and a second set of virtual machines;
• assigning each of the virtual switches a pLID of a plurality of pLIDs, the assigned pLID corresponding to a pLID of an associated physical function;
• and
• assigning each of the virtual machines of the first set of virtual machines a vLID of a plurality of vLIDs;
• assigning at least two of the virtual machines of the second set of virtual machines a same vLID of the plurality of vLIDs;
• and
• wherein an LID space comprises the plurality of pLIDs and the plurality of vLIDs.