Comments on: 10GE is Ready for Your Cluster http://www.linux-mag.com/id/7219/ Open Source, Open Standards Sat, 05 Oct 2013 13:48:18 +0000 hourly 1 http://wordpress.org/?v=3.1 By: Electricity http://www.linux-mag.com/id/7219/#comment-135697 Electricity Mon, 30 Jan 2012 06:48:31 +0000 http://www.linux-mag.com/id/7219/#comment-135697 My brother suggested I may like this website. He used to be totally right. This put up truly made my day. You cann't believe just how so much time I had spent for this information! Thank you! My brother suggested I may like this website. He used to be totally right. This put up truly made my day. You cann’t believe just how so much time I had spent for this information! Thank you!

]]> By: billtodd http://www.linux-mag.com/id/7219/#comment-6039 billtodd Wed, 30 Nov -0001 00:00:00 +0000 http://www.linux-mag.com/id/7219/#comment-6039 If linux-mag aspires to becoming a megaphone for marketeers it's off to a flying start with this one. At least you did note that the author is a VP of the company whose product came out appearing more attractive in this comparison.<br /> <br /> It would be nice to believe that 10 GbE is practical, right now, but I'm afraid that I'll wait for a less biased evaluation before accepting that. I mean, exactly what kind of latency is supposedly being measured in the chart? Both 10 GbE and Infiniband achieve latencies on the order of 1 microsecond, so whatever is taking a large fraction of a millisecond is certainly not the hardware or low-level drivers: rather, it's application-level logic.<br /> <br /> Which of course is likely true for the throughput figures as well. Without knowing how the application is using the transport (or for that matter even knowing which flavor of Infiniband is being used, how the other hardware compares, etc.), attempting to draw any conclusions about the underlying merits of the two options is ridiculous.<br /> <br /> - bill If linux-mag aspires to becoming a megaphone for marketeers it’s off to a flying start with this one. At least you did note that the author is a VP of the company whose product came out appearing more attractive in this comparison.

It would be nice to believe that 10 GbE is practical, right now, but I’m afraid that I’ll wait for a less biased evaluation before accepting that. I mean, exactly what kind of latency is supposedly being measured in the chart? Both 10 GbE and Infiniband achieve latencies on the order of 1 microsecond, so whatever is taking a large fraction of a millisecond is certainly not the hardware or low-level drivers: rather, it’s application-level logic.

Which of course is likely true for the throughput figures as well. Without knowing how the application is using the transport (or for that matter even knowing which flavor of Infiniband is being used, how the other hardware compares, etc.), attempting to draw any conclusions about the underlying merits of the two options is ridiculous.

- bill

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