Subject: General Tech | March 28, 2012 - 01:21 PM | Jeremy Hellstrom
Tagged: amd, seamicro, interconnect, purchase, HPC, 3d torus, freedom
In the beginning of March it was announced that AMD would be spending $334 million to purchase SeaMicro, a company who holds the patents on the 3D torus interconnect for High Powered Computing and servers. This interconnect utilizes PCIe lanes to connect large amounts of processors together to create what was commonly referred to as a supercomputer and is now more likely to be labelled an HPC machine. SeaMicro's current SM1000 chassis can hold 64 processor cards, each of which have a processor socket, chipset and memory slots which makes the entire design beautifully modular.
One of the more interesting features of the Freedom systems design is that it can currently utilize either Atom or Xeon chips on those processor cards. With AMD now in the mix you can expect to see compatibility with Opteron chips in the very near future. That will give AMD a chance to grab market share from Intel in the HPC market segment. The Opteron series may not be as powerful as the current Xeons but they do cost noticeably less which makes them very attractive for customers who cannot afford 64 Xeons but need more power than an Atom can provide.
The competition is not just about price however; with Intel's recent purchase of QLogic and the InfiniBand interconnect technology, AMD needs to ensure they can also provide a backbone which is comparable in speed. The current Freedom interconnect has 1.28Tb/sec of aggregate bandwidth on a 3D torus, and supports up to sixteen 10-Gigabit Ethernet links or 64 Gigabit links, which is in the same ballpark as a 64 channel InfiniBand based system. The true speed will actually depend on which processors AMD plans to put into these systems, but as Michael Detwiler told The Register, that will depend on what customers actually want and not on what AMD thinks will be best.
"As last week was winding down, Advanced Micro Devices took control of upstart server maker SeaMicro, and guess what? AMD is still not getting into the box building business, even if it does support SeaMicro's customers for the foreseeable future out of necessity.
Further: Even if AMD doesn't have aspirations to build boxes, the company may be poised to shake up the server racket as a component supplier. Perhaps not as dramatically as it did with the launch of the Opteron chips nearly a decade ago, but then again, maybe as much or more - depending on how AMD plays it and Intel and other server processor makers react."
Here is some more Tech News from around the web:
- AMD collaborates with Green Hills to port Integrity real-time OS @ The Inquirer
- Death of a data haven: cypherpunks, WikiLeaks, and the world's smallest nation @ Ars Technica
- Rockyou security blunder exposed data on 32 million gamers @ The Inquirer
- Plastic that SELF-REPAIRS using light unleashed by prof @ The Register
- ARM adds Mali support to the new DS5 suite @ SemiAccurate
- ASUS EA-N66U Wireless-N450 Ethernet Adapter @ Benchmark Reviews
- Canon PowerShot SX260 HS Review @ TechReviewSource
- The new Comcast Xbox Xfinity app is the first nail in net neutrality’s coffin @ ExtremeTech
Subject: General Tech | January 15, 2012 - 06:21 AM | Tim Verry
Tagged: SOPA, senate, security, pipa, Internet, house, freedom, dnssec, dns, Copyright, congress, bill
SOPA, the ever controversial bill making its way through the House of Representatives, contained a provision that would force ISPs to block any website accused of copyright infringement from their customers. This technical provision was highly contested by Internet security experts and the standards body behind DNSSEC. The experts have been imploring Congress to reconsider the SOPA DNS provision as they feel it poses a significant threat to the integrity and security of the Internet.
In a somewhat surprising move, on Friday, Representative Lamar Smith of Texas and Senator Patrick Leahy of Vermont both announced that the DNS provisions included in their respective bills (SOPA in the House and companion bill PIPA in the Senate) would be removed until such time that security experts could provide them with more conclusive information on the implications of such DNS interference.
Many sites are preparing protests to SOPA, most will be forced to shut down should SOPA pass.
As a quick primer, DNS (Domain Name System) is the Internet equivalent of a phone book (or Google/Facebook contact list for the younger generation) for websites, allowing people to reach websites at difficult to remember IP (Internet Protocol) addresses by typing in much simpler text based URLs. Take the PC Perspective website- pcper.com- for example; the website is hosted on a server that is then access by other computers using the IP address of "22.214.171.124." Humans; however cannot reasonably be expected to remember an IP address for every website they wish to visit, especially IPV6 addresses which are even longer numerical strings. Instead, people navigate using text based URLs. By typing a URL (universal resource locator) into a browser such as "pcper.com," the software then polls other computers on the Internet running DNS software to match the URL to an IP address. This IP is then used to connect to the website's server. Further, DNSSEC (the Domain Name System Security Extensions) is a standard and set of protocols backed by the IETF (Internet Engineering Task Force) that seeks to make looking up IP addresses more secure. DNSSEC seeks to protect look-up requests by using multiple servers to verify that the URL look-up returns the correct IP address. By securing DNS requests, users are protected from malicious redirects on compromised servers. Browsers will request IP addresses from multiple DNS servers to reduce the risk that they will receive a malicious IP address to a compromises site.
Security experts are opposed to the DNS blocking provisions in SOPA because the methods contradict the very secure environment that standards bodies have been working for years to implement. SOPA would require ISPs to filter every person's DNS requests (the URL typed into the browser), and to block and/or redirect any requests for websites accused of copyright infringement of US rights holders. This very action goes against DNSSEC and opens the door to a less secure Internet. If ISPs are forced to invalidate DNSSEC, browsers will be forced to poll otherwise untrusted servers and what is to stop so called hacking groups and others of malicious intent from compromising DNS servers oversees and redirecting legal and valid URLs to compromised web sites and drive by downloads of malware and trojan viruses? DNSSEC is not perfect; however, it was a big step in the right direction in keeping DNS look-up requests reasonably secure. SOPA tears down that wall with a reckless abandon for the well being of citizens. Stewart Baker, former first Assistant Secretary for Policy at DHS and former General Counsel of the NSA has stated that SOPA would result in "great damage to Internet security" by undermining the DNSSEC standard, and that SOPA was "badly in need of a knockout punch." Various other Internet experts have expressed further concerns that the DNS provisions in SOPA would greatly reduce the effectiveness of the DNS system and would greatly effect the integrity of the Internet including the CEO of (anti-virus company) ESET, the head of OpenDNS, and security experts Steve Crocker and Dan Kaminsky.
While the suspension of the DNS redirecting provisions is a good thing, such actions are too little and too late. And in one respect, by (for now) removing the DNS provisions, Congress may have made it that much easier to pass the bill into law. After all, it would be much easier to amend DNS blocking onto SOPA once it's law later than fight to get the foothold passed at all. From the perspective of an Internet user and content creator, I really do not want to see SOPA or PIPA pass (I've already ranted about the additional reasons why so I'll save you this time from having to read it again). While I really want to be excited about this DNS provision removal, it's just not anywhere near the same thing as stopping the entire bill. I can't shake the feeling that removing DNS blocking is only going to make it that much easier for Congress to pass SOPA, and for the Internet to become much less free. We hear about the death of PC gaming or any number of other proclamations made by content creators expressing themselves and exercising their rights to free speech every year, but PC gaming and most things are still around. Please, call and write you congressmen and implore them to vote against SOPA and PIPA so that the last proclamation I read about is not about the death of the Internet!