<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div><br></div><div>FYI, feedback from one of the reviewers. He agreed to have this forwarded to the list.</div><div><br></div><div><div>Cheers,</div><div>Michael</div><div><br></div><div><br><div>Begin forwarded message:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="4" color="#000000" style="font: 14.0px Helvetica; color: #000000"><b>From: </b></font><font face="Helvetica" size="4" style="font: 14.0px Helvetica">Dirceu Cavendish <<a href="mailto:dirceu_cavendish@yahoo.com">dirceu_cavendish@yahoo.com</a>></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="4" color="#000000" style="font: 14.0px Helvetica; color: #000000"><b>Date: </b></font><font face="Helvetica" size="4" style="font: 14.0px Helvetica">July 6, 2010 4:27:14 PM GMT+02:00</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="4" color="#000000" style="font: 14.0px Helvetica; color: #000000"><b>To: </b></font><font face="Helvetica" size="4" style="font: 14.0px Helvetica">Michael Welzl <<a href="mailto:michawe@ifi.uio.no">michawe@ifi.uio.no</a>></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="4" color="#000000" style="font: 14.0px Helvetica; color: #000000"><b>Subject: </b></font><font face="Helvetica" size="4" style="font: 14.0px Helvetica"><b>Re: [Iccrg] MulTFRC update</b></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div> </div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Thanks for addressing the issues raised in the review process, Michael - some of which I have authored. You have my support to going forward...</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Rgds,</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Dirceu</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><br> </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-size: 12pt; font-family: 'times new roman', 'new york', times, serif; "><br><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-size: 13px; font-family: arial, helvetica, sans-serif; "><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold; ">From:</span></b><span class="Apple-converted-space"> </span>Michael Welzl <<a href="mailto:michawe@ifi.uio.no">michawe@ifi.uio.no</a>><br><b><span style="font-weight: bold; ">To:</span></b><span class="Apple-converted-space"> </span>"<a href="mailto:iccrg@cs.ucl.ac.uk">iccrg@cs.ucl.ac.uk</a><span class="Apple-converted-space"> </span>list" <<a href="mailto:iccrg@cs.ucl.ac.uk">iccrg@cs.ucl.ac.uk</a>><br><b><span style="font-weight: bold; ">Sent:</span></b><span class="Apple-converted-space"> </span>Tue, July 6, 2010 2:29:22 AM<br><b><span style="font-weight: bold; ">Subject:</span></b><span class="Apple-converted-space"> </span>[Iccrg] MulTFRC update<br></font><br>Hello,<br><br>We submitted an update of our MulTFRC draft, in which we tried to address the<br>comments that we have received. After it was presented to DCCP, and there,<br>it was said that ICCRG would be a better place for the draft, it is now called<br>draft-irtf-iccrg-multfrc-00.txt.<br><a href="http://tools.ietf.org/html/draft-irtf-iccrg-multfrc-00.txt">http://tools.ietf.org/html/draft-irtf-iccrg-multfrc-00.txt</a><br><br>The majority of the comments revolved around the possible problems with<br>implementing our equation; we have addressed this by including an appendix<br>in which it is discussed that our algorithm provided for this calculation will<br>not give underflow, overflow or rounding errors that will adversely affect the<br>result of the algorithm.<br><br>On our MulTFRC page:<br><a href="http://heim.ifi.uio.no/~michawe/research/projects/multfrc/index.html">http://heim.ifi.uio.no/~michawe/research/projects/multfrc/index.html</a><br><br>You will now also find two very small Java programs on this page,<br>which implement the TFRC and MulTFRC equations with a GUI, as<br>an easy means to test input / output values and obtain reference values<br>for validating an implementation.<br><br>Lachlan commented that the MulTFRC doesn't scale with the bandwidth*delay<br>product, which we addressed with a new paragraph under "usage considerations",<br>where we document this fact and explain that, for this reason, it is not<br>recommended to use MulTFRC as a fix to the problem of saturating very<br>large bandwidth*delay product paths.<br><br>It was also requested to have a reference which includes the equation's<br>derivation. MulTFRC was developed by Dragana Damjanovic in her Ph.D. thesis,<br>which is now finished, and available from our MulTFRC page. This document<br>includes the derivation of the equation and quite many results:<br>- validations of the equation using simulations and real-life measurements<br>- MulTFRC tests using simulations and real-life measurements<br><br>One small mistake that happened to me just now is that I forgot to explicitly<br>reference this document in the draft; sorry, I will fix this in the next update.<br><br>I intend to present this update at the upcoming ICCRG meeting.<br>Any comments are welcome!<br><br>Cheers,<br>Michael<br><br><br>_______________________________________________<br>Iccrg mailing list<br><a href="mailto:Iccrg@cs.ucl.ac.uk" ymailto="mailto:Iccrg@cs.ucl.ac.uk">Iccrg@cs.ucl.ac.uk</a><br><a href="http://oakham.cs.ucl.ac.uk/mailman/listinfo/iccrg">http://oakham.cs.ucl.ac.uk/mailman/listinfo/iccrg</a><br></div></div></div><br></div></span><br class="Apple-interchange-newline"></blockquote></div><br></div></body></html>