hi again I found this website from lam-mpi on heterogeneous cluster, and it kinda answers my question but just to be on the safe side, i would like to know the response from the mailing list users.
http://www.lam-mpi.org/faq/category11.php3 On 4/3/08, Mark Kosmowski <[EMAIL PROTECTED]> wrote: > > > Message: 8 > > Date: Wed, 2 Apr 2008 21:35:34 +0800 > > From: "Cally K" <[EMAIL PROTECTED]> > > Subject: [Beowulf] SMPs + One processor machines = Heterogeneous > > Cluster > > To: beowulf@beowulf.org > > Message-ID: > > <[EMAIL PROTECTED]> > > Content-Type: text/plain; charset="iso-8859-1" > > > > Hi guys, > > > > Thanks for the previous answers to my question, did not expect that > kinda > > flow of information and it proved to be helpful in my research. I have a > > different question and I hope I can get some nice feedback. > > > > I am dealing with heterogeneous cluster in my research. I am a novice > when > > it comes to networking, and have only been around with cluster for about > a > > year. Anyway, from my previous question, and after doing some reading, > can I > > say that dual cores and quad cores are known as SMPs.? > > > > And would 1 say that, a cluster that has machines with 1 processor ( > etc. > > Pentium 4 )and 2 SMPS( it can be quad or dual ) but all belonging to one > > family ( intel for example ) -- can I say that the cluster is a > > heterogeneous cluster. > > My limited (and perhaps incorrect) understanding is that SMP denotes > more than one processor, regardless the number of cores that the > processor has. > > Heterogenous, to me, implies a cluster of machines running different > operating systems and/or different architectures. > > As an example, my personal is three Opteron systems, each of which has > two single core CPU's, all running OpenSUSE 10.2 64-bit. This is a > homogenous cluster of SMP machines. I plan to add a dual core, single > CPU Athlon (64) system to the cluster at some point. This planned > machine would (in my opinion) not be SMP (although the more I think > about it, the more I think I am either wrong or in the minority camp > about SMP and cores) and the cluster would remain homogenous even if I > were to put OpenSUSE 11.0 (64 bit) on the system (the new OpenSUSE > release and my projected budget have similar timescales). > > Even if I were to use an Intel Pentium system of whatever nomenclature > that is instruction compatible with my existing Opterons (the > difficulty in immediately knowing whether a Pentium chip is 64-bit > capable or not is one of the reasons I am sticking with AMD) the > system would remain homogenous. > > If, however, I were to add a Sun SPARC machine as a node, now I have a > heterogenous cluster. Likewise, if my new Athlon (64) node used > Solaris (for Intel), the cluster would be heterogenous in my opinion. > > My rule of thumb for heterogeneity is whether the programs to be run > need to be recompiled for a given node. If all of the nodes can use > one single compile of all of the codes needed, the cluster is not > heterogenous. I guess this would mean that running a 32-bit program > (I want karma for minding my usage of code vs. program here! :) ) on a > mixture of 32-bit and 64-bit machines would be homogenous, but if on > the same cluster, the 32-bit machines ran a 32-bit program and the > 64-bit machines ran a 64-bit program then that cluster might be > considered heterogenous. > > I hope this at least sparks an interesting conversation, > > Mark Kosmowski >
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