Wednesday, November 28, 2007

"Grid Confinement" - A Physicist perspective

The following post should not be taken too seriously!

If Grid Computing is so good but what we see practically is a complete chaos in the Data Center then there must exist an Anti-Grid that cancels all its benefits.
If one tries to make an order and to split the Data Center into two separate sites then immediately Grid - Anti-Grid pairs are produced out of the vacuum and chaos is being restored.

Monday, November 26, 2007

Social Networks and Grid Computing - Some similarities

There are some similarities between Social Networks, e.g. Facebook and Grid Computing.
In the table below I mention a few.
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Friday, November 23, 2007

Mounting a memory stick under Linux

A short reminder for myself and for all those who are lost when no auto mount works:

1. Verify that the device is recognized in 'dmesg', write down the device name. e.g. /dev/sdb
2. mkdir /disk_on_key
3. mount -t vfat /dev/sdb /disk_on_key
4. at the end un-mount by: umount /disk_on_key

Good luck!

Sunday, November 18, 2007

GSS authentication failure - A question to the gt-users mailing list

I posted today the following question:

I installed Globus version gt4.0.4-x86_64_rhas_4-installer on an Opteron node running CentOS 4.4.
output of uname -a is:
2.6.9-55.0.2.ELsmp #1 SMP Tue Jun 26 14:14:47 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux

In the globus-gatekeeper.log there is the following error message:

TIME: Thu Oct 25 18:16:50 2007
PID: 14589 -- Notice: 6: globus-gatekeeper pid=14589 starting at Thu Oct 25 18:16:50 2007

TIME: Thu Oct 25 18:16:50 2007
PID: 14589 -- Notice: 6: Got connection xxx.xxx.xxx.xxx at Thu Oct 25 18:16:50 2007

GSS authentication failure
GSS Major Status: General failure
GSS Minor Status Error Chain:
globus_gsi_gssapi: Error during delegation: Delegation protocol violation
Failure: GSS failed Major:000d0000 Minor:00000002 Token:00000000

TIME: Thu Oct 25 18:16:50 2007
PID: 14589 -- Failure: GSS failed Major:000d0000 Minor:00000002 Token:00000000

I would appreciate any help resolving this problem

Regards,

Guy Tel-Zur


----------------------------------------------------------------
Then, I received the following reply from Charles Bacon:

That's the sign of a client who disconnected because it didn't trust the gatekeeper. From the gatekeeper's point of view, the disconnect of the client is a violation of protocol. It doesn't indicate anything wrong with your gatekeeper.


Charles

---------------------------------------------------------

Thank you for your reply!

Thursday, November 15, 2007

Software Vulnerability: A new group in Facebook

I created a new group in Facebook to discuss and share knowledge in Software Vulnerability.
I keep there references to relevant links and documents.
You are welcome to join the group: Facebook | Software Vulnerability

My page in Facebook

(Note: In order to access the group you need first to login to your Facebook account)


--Guy

Sunday, November 11, 2007

The 9th edition of PhysicaPlus is on the air



The Israel Physical Society (IPS) on-line magazine, PhysicaPlus, is published a few times a year both in English and in Hebrew and is an excellent source for semi-popular Physics articles.
You are invited to visit PhysicaPlus

Sunday, November 04, 2007

IGT Annual Event & Exhibition

Dec. 3rd, 2007, The Next Generation Data Center

Click on the image for further information: