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    SubjectRe: Sharing RAM over the 'net (was Re: Process Migration on Linux - Impossible?)
    Date
    : At 01:09 AM 10/3/97 +1000, Darren Reed wrote:
    : >So why can't you share the memory ?
    : >
    : >Something pmap calling pmap on another box, over the network, and so on.
    : >
    : >Of course this would be real slow over ethernet, but what about if you
    : >have a host which has multiple cpu's with dedicated memory for each ?
    : >
    : >I think in those sort of instances sharing memory over some sort of
    : >"network interface" is an interesting idea and process/thread migration
    : >could be very sexy. But perhaps Linux cannot support that without huge
    : >rewrites ?
    :
    : Cellular IRIX does exactly this. The big problem is, if one CPU fails or
    : one network link fails, you (potentially) lose every single process on the
    : network of systems.

    Cellular IRIX doesn't exist in production form.

    The "network" under Cellualar IRIX is 800MB/sec, full duplex, with 100ns
    latencies per hop.

    Even with those sorts of numbers, IRIX is having a tough time scaling on
    that machine.

    It's ill advised to go after this w/ regular networks.

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