[Beowulf] Gentoo in the HPC environment

Jonathan Aquilina jaquilina at eagleeyet.net
Sat Jun 28 13:06:31 PDT 2014

I would love to provide you guys with some bench marks question is how.


> On Sat, 28 Jun 2014 15:38:22 +0200, you wrote:
>>My arguments for gentoo is more along the lines of optimization of the
>>source code for ones hardware.
> Every now and then someone gets on the Fedora list
> suggesting/demanding that they change some compiler flags or other
> optimizations that the person has used on a distribution like Gentoo
> and seen "significant" performance gains.
> The standard response is for the person to do some benchmarks that
> prove the claimed improvement is real, and then it will be considered.
> So far, no one has come back with proof of improvements.
> For most use cases the OS is not a limitation, and expending effort to
> improve things will not gain any significant improvements and may
> possibly make things worse.
>>You mention CentOS and Red hat how optimized is the heart of the system
>>for the hard ware its running on?
> What is there to optimize?
> Yes, the kernel and a few key libraries have internal code paths that
> can optimize based on processor but the 64bit world is a fairly
> uniform instruction set (unlike the 32bit Intel world) with the
> exception being the SSE and AVX type extensions which aren't of much
> use to the OS.
>>I for instance currently even though nothing is running on it have a vps
>>with 2gb of ram and with no websites or db on there yet just the servers
>>ram wise i use about 62mb. I look at the low memory foot print as an
>>advantage in the sense that the rest of the ram can be used for more
>>important things.
> That isn't so much optimizing for hardware as it is making sure you
> are only running services/daemons/programs that you need for your
> requirements, which is easy to do with any distribution.
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