Page-based remote memory access using system memory interface network device

At least one non-transitory computer-readable medium comprising instructions stored thereon, that if executed by one or more processors, cause the one or more processors to:

• request a direct memory access (DMA) operation by writing a DMA command for execution by a DMA device, wherein the DMA command is associated with a content access operation and to perform the DMA command, the DMA device is to perform:
• determine if content is stored in a local memory device or a remote memory node based on a configuration that indicates whether a source address associated with the DMA command refers to a memory address associated with the local memory device or the remote memory node and whether a destination address associated with the DMA command refers to a memory address associated with the local memory device or the remote memory node;
• based on the content being stored in the local memory device, cause copying of the content from the local memory device and transmission of the copied content in at least one Ethernet packet to the remote memory node and
• based on the content being stored in a second remote memory node, cause transmission of a request for content in at least one Ethernet packet to the second remote memory node and copy received content from the second remote memory node to the local memory device.

An apparatus comprising:

• at least one processor and
• a direct memory access (DMA) device, wherein the DMA device is to:
• based on a command, determine if content is stored in a local memory device or a remote memory node based on a configuration that indicates whether a source address associated with the command refers to a memory address associated with the local memory device or the remote memory node and whether a destination address refers to a memory address associated with the local memory device or the remote memory node;
• based on the content determined to be stored in the local memory device and the destination address of the content referring to the remote memory node, copy the content from the local memory device and transmit the content to the remote memory node in at least one Ethernet packet;
• and
• based on the content determined to be stored in the remote memory node:
• cause transmission of a request for the content to the remote memory node by generation of at least one Ethernet packet that includes the request for the content and copy received content from the remote memory node to the local memory device.