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    LCG Resource Scheduling Meeting

    → Europe/Zurich
    40-R-D10

    40-R-D10
    Description
    Meeting to review the resource and time scheduling of the various test-beds / production setups. ("Service challenges" , Tier0 tests, PPS tests, "the production", ...) Subscribe to lcg-resource-scheduling-meeting@cern.ch to be kept informed... To join the call, do one of the following: a. Dial +41227676000 (Main) and enter access code 0164222, or b. To have the system call you, click here: https://audioconf.cern.ch/call/0164222
      • 15:00 → 15:15
        Status of SC4 transfer tests 15m

        The disk - disk transfer tests should that we could reach 80% of the nominal 1.6GB/s out of CERN, despite a rather long ramp-up of about one week.

        Many sites were reaching their targets, as discussed here.

        Whilst investigation of transfers to individual sites is on-going, the high-level proposal for future tests is:

        • Demonstrate that we can ramp-up rapidly to full target rate.
        • Demonstrate scenarios that as closely resemble the real conditions during data taking as possible, including in the number and size of files that are transferred to each site, write activity into the export buffers at CERN and so forth.

        Disk - tape transfers are still on-going and will require further analysis. They are clearly less stable (and also at a lower rate - as planned - than the disk - disk transfers).

      • 15:15 → 15:20
        Tier0 Tests + "compatibility" with SC4 throughput tests 5m
        pictures
      • 15:20 → 15:35
        Status / Update of Pre-Production System - Resource Scheduling 15m