Re: AW: AW: [geclipse-dev] InfoView

[Ariel Garcia <garcia@xxxxxxxxxx>]

Hi all,

> For example how do we see the following fitting into  a Globus, or a
> Unicore infrastructure?
>
> > - IJobSubmissionService
> > - IReplicaService
> > - IFileTransferService

some comments:

- i think there is no risk with IJobSubmissionService, the same 
funcionality is available in any middleware

- IReplicaService : it would be perhaps to name that interface
IFileCatalogService, it is more explicit and clear what it is. Currently 
Unicore (at least v.5) does not have such a thing, Globus always had (GT2) 
a Replica Location Server... but i don't know the current status in GT4. 
This one is quite intuitive and generic anyways, so i don't see a big risk 
there.

- IFileTransferService : here we should be more careful, gLite has a 
FileTransferServ(ice/er) which is actually much more sophisticated than 
the ReliableFileTransfer service in Globus4.
The GT4's RFT is a kind of reliablility layer over gridftp insuring that 
the tranfers are actually conducted to an end.
The glite's FTS on the other hand is actually a Broker for file transfers 
across network 'channels' (ie, point-to-point) between different sites 
(which could have several Storage elements). Channels are _predefined_ (by 
the FTS admin) between sites, although ther could be "star" channels which 
allow to transfer from a fixed site to any other.
Those channels allow a lot of control, max. bandwith, max number of 
transfers, can be stopped, restarted, etc.
Important is: you can't connect to a FTS in site A  and ask it to tranfer 
from Site B to Site C.  If site B or C don't have an FTS server (with a 
star channel) you will have to do the copy between the SE's yourself.

So perhaps this interface needs some more analysis.

Cheers, Ariel