Sound Chaser (Dec 12 2012)


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Profile Matt Lebofsky
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Message 1314458 - Posted: 12 Dec 2012, 23:08:56 UTC

I returned to the lab again on Monday (after nearly 2 months off traveling all over Europe from France to Bulgaria and everything in between). Many thanks once again to Jeff and Eric who maintained operations during my absence (and dealing with the heinous power outage/database corruption woes last week).

During that power failure we lost one of our lesser servers (lando). Not sure exactly what happened to it, but it kept crashing. Luckily we had an ample replacement server on the shelf, and thus lando has been reborn. I set up this new system and more and more we're using Scientific Linux, which is a lot like Fedora but geared towards a bit more stability (instead of major version upgrades every 6 months and falling off support shortly after each upgrade). Basically it's an OS for people who use computers to actually compute! So far so good.

Anyway, the fallout of this last outage is that we are weighing several giant plans to move forward in the new year regarding how we maintain (or perhaps relocate) our server closet, with better network, cooling, power, remote kvm access, and UPS protection all parts of this equation.

Our assimilators are falling behind, or not catching up as fast as they should. Jeff and I are stumped about this at the moment, as there are no obvious smoking guns, but it may just be a typical case of several hidden bottlenecks working in conjunction with each other to give us a headache. It's not a real problem right now, but we'll be kicking things around on this front in the coming days.

I also just started a secondary funding drive e-mail, basically a follow-up to the mass mail sent in October/November. If you haven't opted out of such mails, or your spam filter isn't too aggressive, then you should be seeing one of those in your mailbox sometime in the near future. Of course, we already vastly appreciate the donation of your computer cycles!

Okay, back to work. I'll be around for the next while. There's more crazy world tour plans in the spring, but nothing solid yet, and definitely nothing until then. I'll be here until at least mid April, if not longer...

- Matt

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Message 1314467 - Posted: 12 Dec 2012, 23:35:36 UTC

Welcome back Matt.
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Message 1314468 - Posted: 12 Dec 2012, 23:38:03 UTC - in response to Message 1314467.

Welcome back Matt.

+1
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Message 1314472 - Posted: 12 Dec 2012, 23:48:54 UTC - in response to Message 1314458.
Last modified: 12 Dec 2012, 23:49:05 UTC

Welcome back Matt, thanks for the update,

Claggy

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Message 1314494 - Posted: 13 Dec 2012, 1:38:59 UTC - in response to Message 1314472.

Welcome back Matt, thanks for the update,

Claggy


Ditto, welcome back, Matt.

Cheers, Keith


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Message 1314504 - Posted: 13 Dec 2012, 2:53:55 UTC

Welcome back world traveler Matt!! Glad you had a good tour(I think you said that).
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Message 1314539 - Posted: 13 Dec 2012, 7:43:07 UTC - in response to Message 1314458.

Welcome back Matt !
Thanks for all this valuable information :)
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Message 1314546 - Posted: 13 Dec 2012, 8:25:05 UTC - in response to Message 1314458.

The BOINC_VM Virtual Machine downloaded from Test4Theory@home, using only 256 MB RAM, is running CERN jobs using Scientific Linux. This is a Linux with no GUI but I see the OS booting and starting up in the BOINC_VM window. All Windows and Mac OS X user can download their BOINC_VM and they all run the same CERN jobs using a program called PYTHIA simulating proton-proton collisions in the Large Hadron Collider.
Tullio
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Message 1314572 - Posted: 13 Dec 2012, 10:53:52 UTC - in response to Message 1314546.
Last modified: 13 Dec 2012, 10:54:38 UTC

The BOINC_VM Virtual Machine downloaded from Test4Theory@home, using only 256 MB RAM, is running CERN jobs using Scientific Linux. This is a Linux with no GUI but I see the OS booting and starting up in the BOINC_VM window. All Windows and Mac OS X user can download their BOINC_VM and they all run the same CERN jobs using a program called PYTHIA simulating proton-proton collisions in the Large Hadron Collider.
Tullio

There's a build of SL specifically for CERN called, not surprisingly, Scientific Linux CERN or SLC for short -- http://linux.cern.ch. As far as stability goes, it does lag behind the latest kernel, etc., versions. My experiment is still on SLC5 so I have library problems running, e.g., BOINC out of the box. Even on SLC6 I have to compile my own BOINC because of library issues.
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Message 1314594 - Posted: 13 Dec 2012, 12:02:16 UTC - in response to Message 1314572.
Last modified: 13 Dec 2012, 12:06:15 UTC

The Test4Theory@home developers are testing a new wrapper (vboxwrapper) instead of the current cernvm, which needs the BOINC client to be at least 7.0.x to run. Since I my SuSE Linux I am still at 6.10.58 because later Berkeley versions do not start, as they are based on Ubuntu, and the libboinc7 package in the SuSE repository is marked as "unstable", I shall have a problem on my 2 Linux boxes with SuSE 12.1 and 12.2, while on my Solaris VM, which is running a BOINC client and a seti@home app by Dotsch, neither BOINC nor Test4Theory@home are supported and it is a pity, since Solaris 11.1 which I am running is rock solid.
Tullio
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Message 1314656 - Posted: 13 Dec 2012, 14:48:49 UTC

Welcome back Matt, we and Seti have missed you!!

And thanks for the Technical update, it always helps the troops to know what's in the pipeline. Back until April? Wow we should be in fine form by then!

N9JFE David SProject donor
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Message 1314657 - Posted: 13 Dec 2012, 14:49:57 UTC - in response to Message 1314468.

Welcome back Matt.

+1

+several
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Message 1314676 - Posted: 13 Dec 2012, 16:28:05 UTC

Welcome back and thanks for the update. We all hope you enjoyed your time away, and that the New Year plans can solve this and future potential problems.

Thanks

John
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Profile Zapped "Sixth Sense" SparkyProject donor
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Message 1314778 - Posted: 13 Dec 2012, 18:49:36 UTC

Welcome back Matt and thanks for the update. Hope you had a rocking time in Europe.
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Message 1315520 - Posted: 15 Dec 2012, 10:29:11 UTC

hey welcome back matt
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Message 1317159 - Posted: 19 Dec 2012, 16:13:23 UTC

Since Lando has been resurrected, it should be renamed Lobot.

It's only fitting.
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Message 1319075 - Posted: 23 Dec 2012, 0:30:08 UTC - in response to Message 1314458.

Matt,

I bet Jeff and Eric were really happy to see you!

-Boomer
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