Re: [Beowulf] Bolts of Thunder and Upgraded desktop interconnect silicon....

2013-06-10 Thread Lux, Jim (337C)
There's a fundamental problem with running data "really fast"... You need decent transmission lines AND adaptive equalization to make it work. And the equalization is non-trivial to implement in a robust way. There's no way to get the signal off the chip, onto the board, through a connector and

Re: [Beowulf] Prevention of cpu frequency changes in cluster nodes (Was : cpupower, acpid & cpufreq)

2013-06-10 Thread Christopher Samuel
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 10/06/13 04:35, Mikhail Kuzminsky wrote: > 5) lsmod says that there is no cpufreq modules loaded. You probably want to grep your kernel config file to see if they are now built in (they are on Ubuntu, but only ONDEMAND is on Debian, the rest are k

Re: [Beowulf] Bolts of Thunder and Upgraded desktop interconnect silicon....

2013-06-10 Thread Gerald Henriksen
On Mon, 10 Jun 2013 18:57:29 -0400, you wrote: >So a company based out of Cupertino mentioned using this silicon in a >revamp of their MacPro line today... > >http://blogs.intel.com/technology/2013/06/video-creation-bolts-ahead-%E2%80%93-intel%E2%80%99s-thunderbolt%E2%84%A2-2-doubles-bandwidth-ena

Re: [Beowulf] Strange "resume" statements generated for GRUB2

2013-06-10 Thread Skylar Thompson
On 06/10/2013 10:35 AM, Hearns, John wrote: > > > >> Taking into account small size of my swap partition (4GB only), less > than my RAM size, >> (I wrote about this situation in my 1st message) the hibernation image > may not fit into swap partition. Therefore coding of -part2 (for /) in > resum

Re: [Beowulf] Bolts of Thunder and Upgraded desktop interconnect silicon....

2013-06-10 Thread James Cuff
On Mon, Jun 10, 2013 at 8:39 PM, Christopher Samuel wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > On 11/06/13 08:57, James Cuff wrote: > >> we appear to have a second version of a 20GB/s consumer connection >> (latency unknown), and yet this search: > > No idea about the future, bu

Re: [Beowulf] Strange "resume" statements generated for GRUB2

2013-06-10 Thread Christopher Samuel
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 11/06/13 03:20, Mikhail Kuzminsky wrote: > Generally speaking, you are right. But I myself strongly prefer to > know what occurs at linux level - to have the "natural" possibility > (enough knowledge) to work w/OpenSUSE, Fedora etc. So I prefer to

Re: [Beowulf] Strange "resume" statements generated for GRUB2

2013-06-10 Thread Christopher Samuel
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 10/06/13 05:51, Skylar Thompson wrote: > I'm not a SuSE expert so I'm not sure what YaST is doing, but I > imagine you have to make grub changes via YaST rather than editing > the grub configs directly. This is one of the things that really puts m

[Beowulf] Scientific Computing position at DEPI Victoria, Australia

2013-06-10 Thread Andrew Mather
Hi All This is not a 100% Beowulf position, but our cluster is a big part of the role, so I hope it's OK to post here. The Department of Environment and Primary Industries (DEPI) have a vacancy for an additional member to join a small specialist team providing a Scientific Computing capability in

Re: [Beowulf] Bolts of Thunder and Upgraded desktop interconnect silicon....

2013-06-10 Thread Christopher Samuel
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 11/06/13 08:57, James Cuff wrote: > we appear to have a second version of a 20GB/s consumer connection > (latency unknown), and yet this search: No idea about the future, but the immediate history of Thunderbolt doesn't seem particularly encourag

[Beowulf] Call for papers: Dataflow Models for Extreme Scale Computing (DFM 2013)

2013-06-10 Thread Stéphane Zuckerman
(Apologies for multiple receptions) THIRD WORKSHOP ON DATA-FLOW EXECUTION MODELS FOR EXTREME SCALE COMPUTING (DFM 2013) to be held in conjunction with PACT 2013 September 8, 2013, Edinburgh, Scotland http://www.cs.ucy.ac.cy/dfmworks

Re: [Beowulf] Bolts of Thunder and Upgraded desktop interconnect silicon....

2013-06-10 Thread James Cuff
On Mon, Jun 10, 2013 at 7:27 PM, Jeff Johnson wrote: > Thunderbolt is packetized PCI-Express. It also interleaves encapsulated > DisplayPort packets on the same chain. If there are no DisplayPort devices > on the chain then the entire bandwidth is available for data. > > All of the Thunderbolt dat

Re: [Beowulf] Bolts of Thunder and Upgraded desktop interconnect silicon....

2013-06-10 Thread Jeff Johnson
Thunderbolt is packetized PCI-Express. It also interleaves encapsulated DisplayPort packets on the same chain. If there are no DisplayPort devices on the chain then the entire bandwidth is available for data. All of the Thunderbolt data devices on the market have an internal board that contains

[Beowulf] Bolts of Thunder and Upgraded desktop interconnect silicon....

2013-06-10 Thread James Cuff
Hi all! So a company based out of Cupertino mentioned using this silicon in a revamp of their MacPro line today... http://blogs.intel.com/technology/2013/06/video-creation-bolts-ahead-%E2%80%93-intel%E2%80%99s-thunderbolt%E2%84%A2-2-doubles-bandwidth-enabling-4k-video-transfer-display-2/ we appe

Re: [Beowulf] Strange "resume" statements generated for GRUB2

2013-06-10 Thread Hearns, John
> Taking into account small size of my swap partition (4GB only), less than my > RAM size, > (I wrote about this situation in my 1st message) the hibernation image may > not fit into swap partition. Therefore coding of -part2 (for /) in resume > statement is preferred (right for general case). 

Re: [Beowulf] Strange "resume" statements generated for GRUB2

2013-06-10 Thread Hearns, John
> I'm not a SuSE expert so I'm not sure what YaST is doing, but I imagine > you have to make grub changes via YaST rather than editing the grub > configs directly. Indeed. Mikhail - Suse does use your swap partition for hibernation. Yes, you should use Yast to alter any settings. However -somet

Re: [Beowulf] Strange "resume" statements generated for GRUB2

2013-06-10 Thread Mikhail Kuzminsky
 Skylar Thompson wrote: >Hibernation isn't strictly suspension - it's writing all allocated, >non-file-backed portions of memory to the paging/swap space. When the >system comes out of hibernation, it boots normally and then looks for a >hibernation image in the paging space. If it finds one, it