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Number crunching :
T4T@Home Migration to vLHC@Home
Message board moderation
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 Tom95134Send message Joined: 4 May 07 Posts: 250 Credit: 826,541 RAC: 0 |
It was recently announced that T4T@Home is migrating to a new server accompanied by a name change to vLHC@Home. In the thread discussing this migration mention was made that all CERN work is going to use the Oracle VM VirtualBox in the future. Will LHC@Home also migrate to the VirtualBox environment at some point? Tom |
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Send message Joined: 27 Sep 08 Posts: 802 Credit: 649,925,097 RAC: 241,830    |
I doubt it as Eric wants to ensure consistency across platforms. if he went to VM then it would be against his work. |
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Send message Joined: 1 Sep 04 Posts: 57 Credit: 2,834,109 RAC: 219 
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There is another cern boinc lhc called atlas@home and it uses the virtualbox http://atlasathome.cern.ch/ This one is quite recent. I do not know if it is related to T4T |
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Send message Joined: 1 Sep 04 Posts: 57 Credit: 2,834,109 RAC: 219
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I must add that I find that Atlas at home is heavier on the downloads ( larger files) and can be quite demanding on hard drives ( 100% usage) . |
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Send message Joined: 12 Jul 11 Posts: 857 Credit: 1,619,050 RAC: 0 |
Well I am not well informed about vLHC@home but I suppose the idea is that multiple experiments/projects like Atlas, LHCb and T4T can share resources. I have already been asked if I couldn't use Virtual Machines as well. It would make my life easier since I would need only Linux executables but doesn't actually help or solve numeric portability. It also requires more download (of the Virtual machine). For the moment I prefer to stay with the classic BOINC server setup as preferred by some volunteers too. However we have issues with support, see my next Status and Plans, and I am also considering how best to handle three different versions of SixTrack for round normal, round up, and round down. Eric. |
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Send message Joined: 1 Sep 04 Posts: 57 Credit: 2,834,109 RAC: 219
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The wu`s on Atlas are heavy 4 files 102MB,78MB,72KB,13KB. They must have good servers and network bandwith or they would need to limit users. It can mean extra cost for running this type of project. I can run-up 4 - 10 gig of download a day,( wu's are about 15-30 mins on my computer) that adds up for a user. |
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Send message Joined: 19 Feb 08 Posts: 708 Credit: 4,336,250 RAC: 0 
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ATLAS needs a 64-bit Virtual Box. Tullio |
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Send message Joined: 9 Oct 10 Posts: 77 Credit: 3,671,357 RAC: 0 |
For the moment I prefer to stay with the classic BOINC server setup as preferred by some volunteers too. That's why I'm still contributing to this project :) |
yo2013 Send message Joined: 16 Oct 13 Posts: 59 Credit: 342,408 RAC: 0 |
ATLAS needs a 64-bit Virtual Box. And a BIOS with VT-x extensions. |
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Send message Joined: 19 Feb 08 Posts: 708 Credit: 4,336,250 RAC: 0
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I have a Solaris 11.2 as a Virtual Machine with AMD-V enabled. Solaris is 64-bit but it uses my 32-bit Virtual Box. I think ATLAS should do the same. My host OS is a 32-bit SuSE Linux 13.1. Tullio |
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Send message Joined: 1 Sep 04 Posts: 57 Credit: 2,834,109 RAC: 219
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I'm running lhc and atlas, memory usage goes up 8.9 gigs ( in use) I've got 18 gigs on this computer and free memory sometimes goes down to 12MB. |
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Send message Joined: 19 Feb 08 Posts: 708 Credit: 4,336,250 RAC: 0
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Running LHC@home, SETI Astropulse@home, Albert@home and 2 Virtual Machines, Ubuntu and T4T I have 6 GB used of my 8 GB pae on 32-bit Linux. But I have a 120 GB SSD with a 2 GB swap partition just in case. I could fire up a third Virtual Machine, Solaris 11.2 but it does not have any BOINC project so it is saved. Tullio |
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Send message Joined: 1 Sep 04 Posts: 57 Credit: 2,834,109 RAC: 219
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Atlas seems to be a monster on resources. |
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