Hi Les,
There are a couple more ATLAS T2 sites: Boston University and Oklahoma State. Also, Michigan and Michigan State are new T2 at the same time as SLAC. Is UNM part of South West T2? In any event, I will contact someone there for you. Cheers.
Charlie
--
Charles C. Young
M.S. 43, Stanford Linear Accelerator Center
P.O. Box 20450
Stanford, CA 94309
[log in to unmask]
voice (650) 926 2669
fax (650) 926 2923
CERN GSM +41 76 487 2069
> -----Original Message-----
> From: Cottrell, Les
> Sent: Wednesday, September 06, 2006 10:55 AM
> To: Young, Charles C.; Su, Dong; Yang, Wei; atlas-sccs-planning-l
> Cc: iepm-l
> Subject: RE: Tier 2 web page
>
> We have added a group capability to IEPM-BW and used it to
> add an LHC-ATLAS group that selects just LHC-ATLAS paths to
> be shown. If you go to
> http://www.slac.stanford.edu/comp/net/iepm-bw.slac.stanford.ed
u/slac_wan_bw_tests.html then click on LHC-ATLAS in the Monitoring Groups column on the > right, or more directly
> http://www.slac.stanford.edu/comp/net/iepm-bw.slac.stanford.ed
> u/LHC-ATLAS.slac_wan_bw_tests.html. The groups are also
> available at the other monitoring sites BNL, Taiwan, Caltech
> and CERN (but not FNAL).
>
> A next step is to add very simple monitoring of the US-ATLAS
> tier 2 sites, by simple I mean ping and traceroutes. For
> these sites I am looking at Harvard, Chicago, Indiana, UTA,
> Oklahoma, Univ of New Mexico, Langston U, LBL. Of these I do
> not have a host at Univ of New Mexicon that I can ping, I
> have tried www.unm.edu and a couple of others but they are
> filtered. If you care about UNM then I will need someone to
> contact the contact there to get ping and traceroute access
> to a host there.
>
> -----Original Message-----
> From: Young, Charles C.
> Sent: Thursday, August 24, 2006 5:45 PM
> To: Cottrell, Les; Su, Dong; Yang, Wei; atlas-sccs-planning-l
> Cc: iepm-l; Young, Charles C.
> Subject: RE: Tier 2 web page
>
> Hi Les,
>
> Some very late comments...
>
>
> > -----Original Message-----
> > From: [log in to unmask]
> > [mailto:[log in to unmask]] On Behalf Of
> > Cottrell, Les
> > Sent: Wednesday, August 23, 2006 11:47 AM
> > To: Su, Dong; Yang, Wei; atlas-sccs-planning-l
> > Cc: iepm-l
> > Subject: RE: Tier 2 web page
> >
> > Thanks, I found for the US: Boston U, Harvard U, Chicago U,
> Indiana U,
> > Univ Texas at Arlington, Oklahoma U, Univ of New Mexico,
> Langston U,
> > and I think SLAC, UCSD and LBNL should be
>
> We can drop UCSD. It is not part of ATLAS. [I assume we are
> talking here only about the Tier 2 web page here, not the
> overall list of sites to monitor. That should of course have UCSD.]
>
> > added, plus BNL & CERN. Are there others?
>
> It may be interesting to add the so-called western community,
> i.e. the people who are mentioned in our T2 proposal:
>
> LBNL (you have that already)
> UCSC
> Irvine
> Oregon
> Washington
> Arizona
> Wisconsin
>
> >
> > I can start with those. Maybe later if there is interest I can add
> > other country Tier 1 & 2s.
> >
> > I need hosts at those sites that will respond to pings.
> > Typically I use the web server. However pings are often blocked.
> > Looking at the web servers Univ Texas at Arlington
> (www.uta.edu), Univ
> > of New Mexico (www.unm.edu) and LBL
> > (www.lbl.gov) all block pings, the others are OK. For LBL
> I can use
> > ns1.lbl.gov, and for Univ Texas at Arlington I can use
> ns1.uta.edu. So
> > I need someone to give me the name of a host at UNM that is
> always up
> > and responds to pings. Do you have a contact I can work with?
> >
> > Currently we do not monitor any of these sites (we do monitor SDSC
> > which is on the UCSD campus) using PingER (see
> > http://www-iepm.slac.stanford.edu/pinger/), so we will need to add
> > them to the list of hosts to be monitoted and also assign an ATLAS
> > group to them. We could also add making traceroutes to them
> at 10 min
> > intervals to assist in diagnosing problems/events. The
> goal if we do
> > this is to enable long term tracking and visualization of simple
> > performance measures between SLAC and the other sites. This can be
> > very valuable for detecting when something changed to see if it
> > correlates with a user perception of degraded performance.
> We are also
> > working on detecting anomalous events on the end-to-end paths by
> > analyzing the time series for changes. We will be looking for
> > persistent events as opposed to momentary changes in
> performance due
> > to say congestion. Apart from complete loss of connectivity, due to
> > the low frequency of measurements (at 30 minute intervals
> in order to!
> > limit
> > network load) the events (step changes in performance seen
> in the time
> > series) will be detected several hours after they occur.
> Emails can be
> > sent to interested paries. Once we have some results (e.g.
> > measurements going back a month or so, then we can add a pointer to
> > the SLAC ATLAS Tier 2 web site.
> >
> > There is an ATLAS group already for PingER. It includes: BNL, UCSD,
> > CERN, TRIUMF, ITEP (Russia), RAL, LFN.INFN among others. One way to
> > view the existing results is to go to
> > http://www-iepm.slac.stanford.edu/cgi-wrap/pingtable.pl?file=p
> > acket_loss&by=by-node&size=100&tick=monthly&from=WORLD&to=ATLA
> S&ex=none&dataset=hep&percentage=any One can choose other
> metrics (RTT, loss etc.) > from there plus other time ticks
> (aggregated hourly, monthly,
> > daily etc.) for the data, monitoring sites and remote sites
> or groups
> > of sites.
>
> Many sites on this page are not ATLAS, e.g FNAL, Caltech. I
> guess someone decided it would be interesting to ATLAS people
> to monitor them? Ah, maybe these sites belong on the "World"
> side of "ATLAS seen from World". Cheers.
>
> Charlie
>
> >
> > Is this of interest to the SLAC ATLAS community? It's not a lot of
> > work, but if nobody cares then probably we should not
> embark on it or
> > put it on some back-burner. From my viewpoint I would like
> to do it, I
> > believe it will be useful and give PingER more exposure,
> but will need
> > assistance to answer questions, add links, etc. from the
> SLAC ATLAS
> > community.
> >
> > -----Original Message-----
> > From: Su, Dong
> > Sent: Wednesday, August 23, 2006 10:20 AM
> > To: Cottrell, Les; Yang, Wei; atlas-sccs-planning-l
> > Subject: RE: Tier 2 web page
> >
> > There was a pointer buried in my replies to Stephen's Aug/9 meeting
> > minutes which may be useful for locating the US Tier-2 sites:
> > http://www.usatlas.bnl.gov/twiki/bin/view/Admins/WebHome#Tier2
> > _Site_Web_Pages
> > There is a separate page for BNL Tier-1
> http://www.acf.bnl.gov/ but I
> > am not sure either are really up to date.
> > Su Dong
> >
> >
> > > -----Original Message-----
> > > From: [log in to unmask]
> > > [mailto:[log in to unmask]] On
> Behalf Of
> > > Cottrell, Les
> > > Sent: Wednesday, August 23, 2006 9:58 AM
> > > To: Yang, Wei; atlas-sccs-planning-l
> > > Subject: RE: Tier 2 web page
> > >
> > > Is there a list of ATLAS Tier 1 and 2 sites such that we
> > could set up
> > > a web page showing connectivity, round-trip-time, loss, jitter to
> > > those sites from SLAC, CERN & BNL?
> > >
> > > -----Original Message-----
> > > From: [log in to unmask]
> > > [mailto:[log in to unmask]] On
> Behalf Of
> > > Yang, Wei
> > > Sent: Tuesday, August 22, 2006 9:16 PM
> > > To: atlas-sccs-planning-l
> > > Subject: Tier 2 web page
> > >
> > > I discussed with Len about the Tier 2 web page. The issue can be
> > > divided into two areas: content management tools and Tier
> > > 2 content. Here is a summary. any comment?
> > >
> > > Content management tools:
> > >
> > > A static page is good at the beginning. In the near future,
> > we might
> > > want to look at the possibility of using Plone, which is a
> > Wiki-like
> > > tool but provides more features.
> > >
> > > Tier 2 content:
> > >
> > > The discussion focused on the needs of 'local users'. But
> > now I am not
> > > so sure if this is correct. I will add what I think about
> > the needs of
> > > grid users at the end.
> > >
> > > --------------------------------------------------------------
> > > ---------
> > > Notification
> > > *) Outage, major changes
> > > *) Events
> > >
> > > How to obtain computer accounts for SLAC Tier 2
> > > *) Unix account + e-mail account, prefer to send e-mail to
> > users' home
> > > institutes.
> > > *) Full SLAC accounts (unix, e-mail, Windows/exchange, link to
> > > existing
> > > page)
> > > *) Procedures to obtain accounts (discussion: PI -> Charlie ->
> > > HelpDesk ?)
> > >
> > > SLAC Tier 2 Facilities
> > > *) SLAC computing environment, short text and a link to
> > existing one.
> > > *) Security page, a link to existing page.
> > > *) Public machines
> > > *) Setup Atlas environment, links to Stephen's page and
> > Atlas workbook
> > > *) Disk space
> > > in general
> > > AFS related issues
> > > Atlas space areas
> > > *) Batch
> > > LSF documents
> > > Commands to submit Atlas jobs to SLAC LSF farm
> > > LSF resources available to Atlas local users
> > >
> > > Data Availability
> > > *) DQ2 browser and space (Panda monitoring page)
> > > *) How to bring in and transfer out datasets (discussion:
> > do we allow
> > > a
> > > local user to do this?)
> > >
> > > Helps
> > > *) HyperNews at CERN
> > > *) [log in to unmask]
> > > *) Other contact info
> > >
> > > Userful Links
> > > ...
> > > --------------------------------------------------------------
> > > -----------
> > > Grid users should not need much info about us. I am
> > thinking to start
> > > with the following:
> > >
> > > *) Outage, major change, events.
> > > *) How to obtain a certificate/account for grid jobs to SLAC
> > > including limitations of SLAC grid accounts.
> > > *) Data availability (see above for local users)
> > > *) Submit jobs via Panda, a link to BNL
> > > *) HyperNews at CERN for discussion
> > > *) BNL RT (for Western T2) for Tier 2 related help
> > > *) Panda page/DQ2 page for various statistics.
> > > *) Ganglia monitoring in the future?
> > >
> > > --
> > > Wei Yang | [log in to unmask] | 650-926-3338(O)
> > >
> > >
> > >
> > >
> >
> >
>
|
