Re: [Condor-users] Condor-G and GT4 Communication

[Jaime Frey <jfrey@xxxxxxxxxxx>]

On Jun 9, 2008, at 7:15 PM, txcom2003@xxxxxxxxxxxxxxxxxxx wrote:

> > On Jun 9, 2008, at 8:40 AM, txcom2003@xxxxxxxxxxxxxxxxxxx wrote:
> >
> > > Here i attach this mail with a block diagram about communication
> > > between
> > > Condor-G and Globus Toolkit 4 since there isn't documentation about
> > > how
> > > Condor-G interact with GT 4 in Condor Manual. Let me know if there's
> > > something wrong. Thanks
> >
> >
> > Your diagram looks good. The one small comment I'll make is that the
> > gridmanager doesn't transfer any files to/from the gridftp server
> > underneath it. It just spawns it.
>
> Thank's for the comment. I really appreciate it.
> I have a question about RFT and GridFTP that's in my diagram.
> 1. Does Condor-G has it own GridFTP server or it's just a client ?
> 2. Does Condor-G also use RFT to control file Transfer between  
> Condor-G
> and Globus 4 ? May be I need more explanation about this.


Condor starts a gridftp server that runs for the life of the job. RFT  
is the gridftp client that controls the file transfers between the  
gridftp server under Condor and the gridftp server on Compute Element.

The file transfers that need to occur for the job are included in the  
job description that Condor sends to the GRAM service. GRAM forwards  
them to RFT.

Thanks and regards,
Jaime Frey
UW-Madison Condor Team