Constructing Grid on Fedora

[Joachim Backes]

On 11/01/2011 10:11 AM, Abu Attar Musharih wrote:
> Dear List,
> 
> I have a cluster of several PCs, each is running Fedora, either 14 or 15.
> I want to make this PCs grid enabled, so I installed globus  (
> http://www.globus.org/ )  and made a server with a global IP and with
> a subdomain. My main objective is to be able to run parallel
> programming (mpi), harnessing the idle CPUs of onlines nodes.

Hi Abu Attar Musharih,

First of all, I don't think that a grid is the right instrument for
running processes using a MPI model (this is more thread based, or, if
using a cluster, based on a  RPC model for example). Or look at
*www.mosix.org*.

For cluster software, you could use Scientific linux or Rocks Clusters
Linux. I made good experience in managing a cluster with Rocks Clusters
Linux, based on CentOS (www.rocksclusters.org).

Additionally, in my opinion, the Fedora user list is not really a good
contact for your grid question. I'm sure there is a appropriate Q&A page
at globus.org (the messages listed below are not system specific enough)
- it seems to be a middleware problem.

Kind regards

Joachim Backes
> 
> The stage at a moment, I have successfully  set up  simple-CA and the
> GSI of the server.
> 
> Globus commands works fine, for example:
> 
> ++++
> $ globus-hostname-lookup fedora.org
> Resolving address (fedora.org)...
> -------------------------------
> Numeric address: 67.40.49.xxx
> Expected DN suffix: /CN=host/hoxx.trippy.org
> ++++
> 
> $ grid-proxy-init
> Your identity: /O=Grid/OU=GlobusTest/OU=simpleCA-localhost.localdomain/OU=localdomain/CN=
> Abu Attar
> Enter GRID pass phrase for this identity:
> Creating proxy ............................................ Done
> Your proxy is valid until: Wed Nov  2 05:01:04 2011
> 
> ++++++
> 
> I tried but failed to copy a file from one node to a server.
> 
> $ globus-url-copy file:///home/username/Grid/Codes/cpi.c gsiftp://domainname/
> 
> The message is as follows,
> 
> error: globus_xio: Unable to connect to domainname:2811
> globus_xio: System error in connect: No route to host
> globus_xio: A system call failed: No route to host
> 
> It seems something to do with the port 2811.  Checking  /etc/services
> of the server gave the port number and the protocol
> ++++
> root$ less /etc/services | grep gsi
> 
> gsigatekeeper   2119/udp                # GSIGATEKEEPER
> gsiftp          2811/tcp                # GSI FTP
> gsiftp          2811/udp                # GSI FTP
> gsidcap         22128/tcp               # GSI dCache Access Protocol
> ++++
> 
> As I do not have any experience, I have no idea how to fix it.
> I mainly rely on internet searching, but still can  not find the  answer.
> 
> I expect  from this list some  suggestions or any comment.
> Thank you very much  in advance.
> 
> with best,
> AA


-- 
Joachim Backes <joachim.backes at rhrk.uni-kl.de>

http://www.rhrk.uni-kl.de/~backes

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