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Re: [Xen-devel] Re: Using Xen Virtualization Environment for Development and Testing of Supercomputing and High Performance Computing (HPC) Cluster MPICH2 MPI-2 Applications

  • To: Pasi Kärkkäinen <pasik@xxxxxx>
  • From: "Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>
  • Date: Sat, 31 Oct 2009 00:39:10 +0800
  • Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, space.time.universe@xxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 30 Oct 2009 09:39:42 -0700
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Fedora 12 released already? It's not November 2009 yet.

Why not use j8?

Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe@xxxxxxxxx
MSN: teoenming@xxxxxxxxxxx
Mobile Phone (SingTel): +65-9648-9798
Mobile Phone (Starhub Prepaid): +65-8369-2618
Age: 31 (as at 30 Oct 2009)
Height: 1.78 meters
Race: Chinese
Dialect: Hokkien
Street: Bedok Reservoir Road
Country: Singapore

On Sat, Oct 31, 2009 at 12:29 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
On Fri, Oct 30, 2009 at 09:24:33AM -0700, Jeremy Fitzhardinge wrote:
> On 10/30/09 09:14, Mr. Teo En Ming (Zhang Enming) wrote:
> > Strange. I took nearly 1 hour to compile on my Intel Pentium Dual Core
> > E6300 2.8 GHz processor on Intel Desktop Board DQ45CB with 8 GB
> > DDR2-800 memory.
> It depends a lot on how much kernel you have configured; I can believe a
> full distro-like config with everything built with modules would take a
> lot longer.  Are you using make's -j option to use multiple cores?  I
> tend to use "make -j4" to get good processor use on a dual-core system
> (rough rule of thumb, -jX where X = 2*ncpu).

On a Core2 quad 2,66 GHz CPU Fedora 12 default-config full build
takes around 18 minutes.. with 8 GB of RAM and -j6.

-- Pasi

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