LISTSERV 16.5 - ATLAS-SCCS-PLANNING-L Archives

I should comment about US-NET2 in the table, I think.

Harvard is missing. I'm guessing that's because RSV data isn't used anymore and if this is SAM-only, only our BU end would be relevant. I'm not sure, however.

Our availability is listed as 86%, while we are usually basically 100%. This is probably from the SRM trouble that we had following the FTS3 switch. There was a period where several times a day, our SRM would be unresponsive for ~10 minutes and then recover and there was one night when things got worse than that. DDM recovers from such things fairly well, but I suspect that it affected the metrics. The 86% is not really quantitatively meaningful.

This is reminding me that there was a similar issue brought up at the last ADC meeting. There is a new proposal for calculating A/B/C/D grades for sites and for automating the calculation of which T2s are T2D. They are talking about analysis availability only and ask for suggestions. I tried what I think is a reasonable and simple way to compute this:

http://egg.bu.edu/usatlas/studies%7btype:egg.Hatch%7d/analy_avail/

I'm thinking about sending the items at the bottom of the page as a suggestion to the A/B/C/D T2D people and possibly to WLCG as well.

- Saul

On Wed, Apr 2, 2014 at 1:45 PM, Yang, Wei <[log in to unmask]> wrote:

I think the # for WT2 is close to reality. WT2 was hit by the LHCONE configuration problem at ESnet when they switch to 100Gbit, a bug in Bestman/Jetty (a ticket is opened with OSG) regarding new host certificate, a LSF upgrade failure, and a few small disk problems.

Wei Yang | [log in to unmask] | 1-650-926-3338

On Apr 2, 2014, at 8:07 AM, WLCG Office <[log in to unmask]> wrote:

> Dear all,
>
> The draft T2 reliability & availability reports for March are now available at:
>
> http://sam-reports.web.cern.ch/sam-reports/2014/201403/wlcg/ under titles starting with "WLCG_All_Sites..."
>
> Please verify your data and send comments to WLCG Office by 12th April.
>
> Any requests for recomputation must be submitted via GGUS within the next 10 calendar days; full details here.
>
> Kind regards,
> Cath
>
>
> -----------------------------------------------
> WLCG Office
> IT Dept - CERN
> CH-1211 Genève, Switzerland
> www.cern.ch/wlcg

_______________________________________________
Usatlas-t2-l mailing list
[log in to unmask]
https://lists.bnl.gov/mailman/listinfo/usatlas-t2-l

Saul Youssef

Research Associate Professor

Center for Computational Science

Boston University

3 Cummington Street

Boston, MA 02215

[log in to unmask]

http://physics.bu.edu/~youssef