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<html><head><title>Re[2]: [Beowulf] Repeated Dell SC1435 crash / hang. How to get the vendor to resolve the issue when 20% of the servers fail in first year?</title>
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<p>Hallo Rahul,</p>
<p><br></p>
<p>Montag, 6. April 2009, meintest Du:</p>
<p><br></p>
<p><span class=rvts6>RN> On Mon, Apr 6, 2009 at 7:46 AM, Chris Samuel <</span><a class=rvts7 href="mailto:csamuel@vpac.org">csamuel@vpac.org</a><span class=rvts8>> wrote:</span></p>
<p><span class=rvts9>>> Even though we could reproduce it on 64-bit Debian</span></p>
<p><span class=rvts9>>> and 32-bit CentOS they wouldn't escalate the issue</span></p>
<p><span class=rvts9>>> until we could reproduce it on RHEL5 - which we did</span></p>
<p><span class=rvts9>>> today.</span></p>
<p><br></p>
<p><br></p>
<p><span class=rvts6>RN> Thanks for sharing the anecdote Chris. I wonder if there is any clause</span></p>
<p><span class=rvts6>RN> in the contracts restricting us to run certain OS's.</span></p>
<p><br></p>
<p><span class=rvts6>RN> So long as we are using a "reputable" well-tested OS I find it unfair</span></p>
<p><span class=rvts6>RN> that the vendors engage in so much arm-twisting. Is there any</span></p>
<p><span class=rvts6>RN> scientific evidence that the core kernels of Debian or Fedora or CenOS</span></p>
<p><span class=rvts6>RN> (that *is* essentially RHEL isn't it?) are any less reliable then</span></p>
<p><span class=rvts6>RN> RHEL? What is / are the distros of choice on the Beowulf community?</span></p>
<p><span class=rvts6>RN> Just getting a feel.</span></p>
<p><br></p>
<p><span class=rvts6>RN> I have tried out cutting edge distros meant for scientific</span></p>
<p><span class=rvts6>RN> applications like ScientificLinux or ComputeNodeLinux but I've found</span></p>
<p><br></p>
<p>ScientificLinux is - in fact - RHEL. So it is not more "cutting edge" than CentOS... </p>
<p><br></p>
<p><span class=rvts6>RN> it more practical to stick to a larger, well used distro. No doubt I</span></p>
<p><span class=rvts6>RN> might take some performance cuts on the benchmarks but the simple</span></p>
<p><span class=rvts6>RN> reality of a larger user community out there makes it easier to debug</span></p>
<p><span class=rvts6>RN> stuff and get well-tested apps and code that will run on my Distro</span></p>
<p><span class=rvts6>RN> out-of-the box.</span></p>
<p><br></p>
<p>I See that ScientificLinux has a huge community using it - at least in Europe. Some big research institutes are using it (CERN for example) - some projects set it as the default distro (D-Grid - a german GRID project). </p>
<p><br></p>
<p>So i don't see you point here ;-)</p>
<p><br></p>
<p>Jan</p>
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