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