<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jun 5, 2018 at 8:15 AM, Hal Rosenstock <span dir="ltr"><<a href="mailto:hal.rosenstock@gmail.com" target="_blank">hal.rosenstock@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><span>On Tue, Jun 5, 2018 at 2:06 AM, John Evan <span dir="ltr"><<a href="mailto:evajohn.777@gmail.com" target="_blank">evajohn.777@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div>I am trying to create a switch-less torus topology(3x3x3). </div></div></blockquote><div><br></div></span><div>What is a switch-less torus topology ? Do you mean that the 3x3x3 torus topology is comprised of CA ports only ?</div></div></div></div></blockquote><div><br></div><div>Is this 27 hosts without direct connection between all the hosts ?</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div>I know that opensm provides torus-2QoS routing engine but, i think the opensm documentation considers a switched topology. </div><div><br></div><div>Does anyone know whether opensm provides support to switch-less torus topology?</div></div></blockquote><div><br></div></span><div>In IBA, back to back" CAs (switchless) is a "separate" IB subnet and that's how OpenSM treats this.</div></div></div></div></blockquote><div><br></div><div>Assuming any host may need to talk to any of the other hosts, as long as all the hosts are directly connected (one hop away) to all the other hosts, this should work but requires configuration. If some hosts are not directly connected (but more than 1 hop away), it will not work as the CAs in the hosts do not forward packets as do IB switches and routers.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div><br></div><div>-- Hal</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr"><div><br></div><div>Thanks</div><div>Jon E<br></div></div>
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