Re: [Condor-users] Condor-G and GAHP

[Jaime Frey <jfrey@xxxxxxxxxxx>]

On Jun 15, 2008, at 11:26 PM, txcom2003@xxxxxxxxxxxxxxxxxxx wrote:

> I have some question about Condor-G.
>
> 1. Is Condor-G still being maintained by Condor Team ? I Read Condor
> manual and I think if it still being maintained it should had new
> documentation about how Condor-G interact with newer version of Globus
> Toolkit (curently GT4)
>
> 2. Sometimes I think that Condor-G has not change at all, the only  
> change
> was GAHP server. Is that true ? When I looked into GridManager log, I
> still saw "GM_PROBE_JOBMANAGER". I think there is no JOBMANAGER that  
> used
> in Globus Toolkit 4 WS-GRAM.
>
> 3. When I visited GAHP site at http://www.cs.wisc.edu/condor/gahp/ ,  
> There
> is no documentation about GT4 GAHP that available. can anyone show me
> where to get Globus 4 GAHP documentation ?
>
> * Globus 2 GAHP (the original GAHP). The GT2 GAHP protocol spec is  
> here.
> * Globus 3.2 GAHP. The GT3.2 GAHP protocol spec is here.
> * Globus 4 GAHP. Spec coming soon
> * C-GAHP (Condor GAHP). The C-GAHP protocol spec is here
> * BLAHP (from INFN). The BLAHP protocol spec is here


Condor-G is still actively developed by the Condor Team. It can submit  
jobs to pre-WS GRAM (referred to as GT2) and WS GRAM (referred to as  
GT4). In developing the code for GT4 GRAM, we borrowed some naming  
conventions from the GT2 GRAM code. As you observed, there is no  
jobmanager in GT4 GRAM, but the name stuck in the Condor-G code.

At a high level, GT2 GRAM and GT4 GRAM work the same way. Condor  
writes a GRAM job description and submits it to the GRAM service,  
which handles the file transfers and job execution. The GRAM service  
sends notifications when the job's status changes. At a low level, the  
two are very different. We haven't written any documentation on the  
details of how Condor interacts with GT4 GRAM.

The GAHP webpage has fallen out of date. There is a GAHP for GT4 GRAM.  
We don't have a protocol specification document available for it, but  
the source code is available if you want to examine it.

Thanks and regards,
Jaime Frey
UW-Madison Condor Team