[Beowulf] Cluster of Linux and Windows

2009-11-12 Thread Leonardo Machado Moreira
Hi, I am new on Clusters and have some doubts about them. I am used to work with Arch Linux. What do you think about it? And finnaly, I would like to know if Is it possible to get a Cluster Working with a Server on Arch Linux and the nodes Windows. Or even better the nodes without a defined SO.

[Beowulf] ask about mpich

2009-11-12 Thread christian suhendra
halo guys i wants to make a cluster system with mpich in ubuntu,,but i have troubleshooting with mpich.. but when i run the example program in mpich..it doesn't work in cluster..but i've registered the node on machine.LINUX.. but still not working please help me..this is my thesis... __

[Beowulf] UEFI (Unified Extensible Firmware Interface) for the BIOS

2009-11-12 Thread Rahul Nabar
Has anyone tried out UEFI (Unified Extensible Firmware Interface) in the BIOS? The new servers I am buying come with this option in the BIOS. Out of curiosity I googled it up. I am not sure if there were any HPC implications of this and wanted to double check before I switched to this from my conv

Re: [Beowulf] array shape difference

2009-11-12 Thread Greg Lindahl
On Thu, Nov 12, 2009 at 08:26:13AM -0500, Stuart Barkley wrote: > > If the fortran code is doing virtual subscripts (e.g. array2(i*2 + j)) > it would likely generate about the same code as the compiler would > generate for 2 dimensions. In theory, the compiler can generate > better subscript com

Re: [Beowulf] bizarre scaling behavior on a Nehalem

2009-11-12 Thread Rahul Nabar
On Tue, Nov 10, 2009 at 12:31 PM, Tiago Marques wrote: > Hi all, > > Enjoy the performance increase, if you haven't still. To us it > increased around 33% in conjunction with running 8 CPUs. It seems to > me that groups may be useful to run with more nodes and not just one > machine but I haven't

Re: [Beowulf] array shape difference

2009-11-12 Thread amjad ali
Hi all and Thanks you all. It is making quite good sense. On Thu, Nov 12, 2009 at 8:50 AM, Michael H. Frese < michael.fr...@numerex-llc.com> wrote: > At 06:26 AM 11/12/2009, Stuart Barkley wrote: > >> At 03:40 PM 11/11/2009, Peter St. John wrote: >> > The difference between: >> > arr

Re: [Beowulf] array shape difference

2009-11-12 Thread Michael H. Frese
At 06:26 AM 11/12/2009, Stuart Barkley wrote: At 03:40 PM 11/11/2009, Peter St. John wrote: > The difference between: > array1(1:6) > array2(1:2, 1:3) > > would be reflected in the size of the executable, not the size > of the data. > Right? On Thu, 12

Re: [Beowulf] array shape difference

2009-11-12 Thread Stuart Barkley
At 03:40 PM 11/11/2009, Peter St. John wrote: > The difference between: > array1(1:6) > array2(1:2, 1:3) > > would be reflected in the size of the executable, not the size > of the data. > Right? On Thu, 12 Nov 2009 at 07:18 -, Michael H. Frese wrote

Re: [Beowulf] array shape difference

2009-11-12 Thread Michael H. Frese
That's correct. The executable size would reflect the extra operations required to compute the offset for the doubly dimensioned array. Mike At 03:40 PM 11/11/2009, Peter St. John wrote: The difference between: array1(1:6) array2(1:2, 1:3) would be reflected in the size of the execu