[Bioclusters] High Availability Clustering

Michael Humphrey bioclusters@bioinformatics.org
Thu, 7 Aug 2003 08:49:34 -0400

Lai Loong Fong,

I assume you are using the term "shadow master" to refer to the ability to
have the PBS Pro server and scheduler modules automatically migrate to a new
hardware platform when the original master head node experiences a failure.

Currently PBS Pro server and scheduler modules can fail over when set-up on
failsafe hardware. This current implementation requires special hardware and
operating system support from hardware manufacturers.

This new software failover capability is currently in beta testing within
PBS Pro and we are planning to make this new functionality available in
Version 5.4 of PBS Pro to be announced in November of this year. This new
functionality will not require special hardware environments.


PS: NCSA is currently considering migrating from OpenPBS to PBS Pro. 

-----Original Message-----
From: LAI Loong Fong [mailto:lailf@bii.a-star.edu.sg] 
Sent: Thursday, July 24, 2003 9:29 PM
To: Bioclusters; Robert Walsh; Michael Humphrey
Subject: Re: [Bioclusters] High Availability Clustering

I am not sure whether NCSA or NCAR are using Scalable PBS, the only info
that I got from them is that they are not using the standard OpenPBS &
PBSPro. I agree with you the problem with PBSes not having "shadow master",
anyway Michael will be in Singapore next week and I will be meeting up with
him, so I will raise this point with him. Any other things that you guys
like me to ask Michael about?

LAI Loong Fong

On 25/7/03 9:07 AM, "Ron Chen" <ron_chen_123@yahoo.com> wrote:

> Are you talking about Scalable PBS?
> One important feature that is still missing is the
> "shadow master", it is simple to implement, but AFAIK,
> PBS, OpenPBS, and ScalablePBS do not have it.
> NOT that I wanted to suggest GridEngine everytime, but
> if PBS is still missing this feature, I don't think I
> would use PBS in any production cluster!
> (for those on the PBS mailing list, you would know
> what I am talking about)
> -Ron
> --- LAI Loong Fong <lailf@bii.a-star.edu.sg> wrote:
>> That's because NCSA and also NCAR are using a hacked
>> version of PBS rather
>> than the one that you can download.
>> LAI Loong Fong
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