<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Jul 27, 2011, at 10:16 AM, Ulf Wiger wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><br>On 27 Jul 2011, at 08:08, Michael Truog wrote:<br><br><blockquote type="cite">On 07/26/2011 09:42 PM, Richard O'Keefe wrote:<br></blockquote><blockquote type="cite"><blockquote type="cite">(3) There doesn't seem to be anything in the Erlang _approach_ that<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> should interfere with scaling, but the _implementation_ appears<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> not to scale well much past 16 cores.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> I don't know if that is current information. If true, it's an<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> important limitation of the implementation which I'm sure will be<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> given a lot of attention. I don't expect it to stay true.<br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Any problems scaling on systems with more than 16 cores just seems to be related to the current cost of those systems (would love to know what the tests currently show on the Tileras > 16 cores though). <br></blockquote><br><br>I guess it's fair to say that the Erlang/OTP doesn't have a "dangerously sexy" approach to SMP scalability. They recognise that their sponsors [1] would have their heads if BEAM started hanging or dumping core in the sole interest of scaling to ridiculously many cores on hardware that none of the sponsors are using. Instead, they try to deliver incremental improvements without ever sacrificing the rock-solid performance of BEAM that Erlang users have come to expect. They're not batting 100% in that regard, but close enough to be very impressive, IMHO.<br><br>They *have* run benchmarks on 64-core machines, but mainly to learn about what's around the corner, and understand what changes will be needed to get there. You will soon hear about some pretty exciting developments in the area of Erlang for massive scalability, but there is a time and a place for everything… ;-)<br><br></div></blockquote><br></div><div><br></div><div>Also don't forget that there's a grant given to universities to further develop Erlang to become massively multicore, as Kostis Sagonas said at Erlang Factory in London</div><div><br></div><div><br></div><br><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; "><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-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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><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-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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><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-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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; ">===================================</span></font></div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; ">Dmitrii Dimandt<br><a href="mailto:dmitrii@dmitriid.com">dmitrii@dmitriid.com</a><br><br></span></font></div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; ">------------------------------------------------------------<br>Erlang in Russian<br><a href="http://erlanger.ru/">http://erlanger.ru/</a></span></font><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; "><br></span></font></div><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; ">TurkeyTPS</span></font></div><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; "><a href="http://turkeytps.com/">http://turkeytps.com/</a></span></font></div><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; ">------------------------------------------------------------</span></font></div><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; "><br></span></font></div><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; ">LinkedIn: <a href="http://www.linkedin.com/in/dmitriid">http://www.linkedin.com/in/dmitriid</a></span></font></div><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; ">GitHub: <a href="https://github.com/dmitriid">https://github.com/dmitriid</a></span></font></div><div><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; "><br></span></font></div></div></span></div></span><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px; "><br class="Apple-interchange-newline"></span></font></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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