Local and remote dual address decoding using caching agent and switch

A non-transitory machine-readable storage device comprising instructions stored thereon that, when executed by a local node, configure the local node to:

• generate a first memory request, the first memory request including a first address and a first node identification;
• determine that the first address is homed to a remote node remote to the local node;
• produce a second memory request based on the first memory request;
• and
• receive, from a switch that includes a remote system address decoder to determine a second node identification to which the second memory request is homed, a response to the second memory request.

A distributed shared memory system comprising:

• a plurality of local nodes respectively comprising a first plurality of hardware processors, a local system address decoder coupled to the first plurality of hardware processors, a local memory coupled to the local system address decoder and a first network interface controller, the local system address decoder to determine whether a first memory request from a hardware processor of the plurality of hardware processors is homed to an address of the local memory or homed to a memory remote to the respective local node;
• a plurality of client servers respectively comprising a second network interface controller and a plurality of client nodes accessible therethrough, each of the plurality of client nodes including a remote memory;
• and
• a switch communicatively coupled between the first and second network interface controllers, the switch including a remote system address decoder to determine a node identification to which the first memory request is homed if the local system address decoder determines the address is homed to the remote memory, the switch to provide a second memory request to a second network interface controller of the plurality of second network interface controllers corresponding to the node identification to which the first memory request is homed.

A method performed by a distributed shared memory system comprising:

• generating a first memory request from a local node, the first memory request including a first address;
• determining at a local system address decoder of the local node, that the first address is homed to a node remote to the local node;
• producing using a network interface controller coupled to the local node, a second memory request based on the first memory request;
• determining using a remote system address decoder of a switch coupled to the network interface controller, a node identification of the node remote to the local node based on the first address in the second memory request;
• generating, using the switch, a third memory request including the determined node identification;
• and
• providing from the switch and to the network interface controller of the local node, a communication including data responding to the third memory request.