Hi,
If you run a x86 linux kernel a memory limit will apply per
process ( The limit is normally ~2Gbyte unless you do some work). But
you will be able to have many such processes running. Also if you
install x86_64, glite should still work if you install the x86 libs.
Unless you need a large per process address space, the major gain of
x86_64 is that native code actually runs ~20-30% faster (due to the
extended instruction set with more registers).
On Fri, 23 Feb 2007, Santanu Das wrote:
> Hi all,
>
> Now we got 32 new Dell PowerEdge 1950 boxes; all with dual Xenon 5150 2.66GHz
> processor (i.e. Woodcrest) and 8Gb of memory. As, gLite still can't cope
> with 64-bit architecture, then what about addressing all the memory on those
> boxes? Look at:
> http://www.intel.com/technology/intel64/index.htm
>
> It states that a 64 bit OS is needed to address more than 4GB of memory.
> However, as those boxes have 8GB each, implying that we only ever use half of
> the installed memory. Furthermore, Condor's advertising all 8GB of installed
> memory, which may have unfortunate repercussions when jobs try to run above
> the 4GB mark. Any suggestion(s)??
>
> Cheers,
> Santanu
>
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