giraph-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Claudio Martella <>
Subject Re: Inter- and intra-node message passing
Date Mon, 04 Feb 2013 17:19:57 GMT
Hi Alexandros,

if two vertices are on the same worker, the message does not pass through
the network but it is put directly in the mailbox of the destination vertex.


On Mon, Feb 4, 2013 at 6:03 PM, Alexandros Daglis <
> wrote:

> Hello everybody,
> I was wondering about the message-passing protocol: is there a difference
> if two communicating threads are on the same node, as opposed to being on
> different ones? Is communication achieved through memory whenever the
> threads are local to the node, or does it always default to the network?
> I tried answering that question by going through the code, but I haven't
> seen any high-level difference in handling those two different cases. I
> would appreciate if someone could give me a hint on that.
> Thank you in advance.
> Alexandros

   Claudio Martella

View raw message