Remote memory management

A system comprising:

• a first computer comprising a first operating system;
• and
• a second computer communicatively coupled to the first computer via a remote direct memory access enabled communication network, the second computer comprising a second operating system and a second memory, the second memory comprising a plurality of buffers,
• the first computer remotely managing the plurality of buffers of the second memory of the second computer without involving either the first operating system or the second operating system, the managing further comprising:
• the first computer identifying available buffers amongst the plurality of buffers, the identifying based at least in part on the second computer registering the plurality of buffers with the first computer and informing the first computer of an availability to write to the plurality of buffers,
• in response to the registration, the first computer configured to write, using a first write message and a second write message, to the second computer via the remote direct memory access, the first write message writing user content data via the remote direct memory access to a payload buffer of the plurality of buffers at the second computer, the second write message comprising a Write with IMM, to a header buffer of the plurality of buffers, the Write with IMM including a first immediate value indicating a location in the header buffer that contains an address and an offset to a second location in the payload buffer of the plurality of buffers, the second location configured to store payload data comprising the user content data, wherein the second write message informs, via the write to the header buffer, the second computer of the second location in the payload buffer being used by the first computer, and wherein after the write, the first computer is configured to receive, via another corresponding Write with IMM from the second computer, second data specifying a read index processed by the second computer to prevent an overflow condition.