[Beowulf] Broadcast - not for HPC - or is it?
hearnsj at googlemail.com
Tue Oct 5 09:40:55 EDT 2010
On 5 October 2010 14:23, Bogdan Costescu <bcostescu at gmail.com> wrote:
> HPC usage is a mixture of point-to-point and collective
> communications; most (all?) MPI library use low level point-to-point
> communications to achieve collective ones over Ethernet.. Another
> important point is that the collective communications can be started
> by any of the nodes - it's not one particular node which generates
> data and then spreads it to the others; it's also relatively common
> that 2 or more nodes reach the point of collective communication at
> the same time, leading to a higher load on the interconnect, maybe
However this device might be very interesting if you redefine your
parallel processing paradigm.
How about problems where you send out identical datasets to (say) a
farm of GPUs.
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