Re: [Gems-users] PerfectSwitch wakeup


Date: Thu, 19 Apr 2007 22:53:25 -0400
From: Niket Agarwal <niketa@xxxxxxxxxxxxx>
Subject: Re: [Gems-users] PerfectSwitch wakeup
Thanks mike for the reply.

Niket Agarwal wrote:
    Hi all.
    I have questions regarding the network functioning in Gems.

    What I figured out is, all 'Perfect' Switches are woken up in an
    event driven fashion and the wakeup() method is called. This
    happen's whenever there is an 'event' for that particular switch
    to handle. The switch then processes the request.

    I have 2 questions:

    1. Where is the wakeup() call being made ?

The global event queue.  See EventQueue.C

    2. I followed the code and figured out that the switch transfers
    the message from m_in to m_out. How is the message being
transfered into the next switch? Is link contention being modeled? PerfectSwitch does not model link contention. This is the job of a Throttle, which keeps track of link bandwidth and adds queuing delay. Every link has a PerfectSwitch and a Throttle.
--Mike

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