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=============================================================================== Robb Kambic Unidata Program Center Software Engineer III Univ. Corp for Atmospheric Research address@hidden WWW: http://www.unidata.ucar.edu/ =============================================================================== ---------- Forwarded message ---------- Date: Thu, 26 Aug 1999 08:49:00 -0600 (MDT) From: Peter Neilley <address@hidden> To: address@hidden address@hidden, address@hidden Subject: Re: No WSI feed from wsihcsn.unidata.ucar.edu to iita at 99082610 Dave: > What triggers these messages? When the WSI data on disk looks more than some > number of > minutes old? Does it monitor the WSI stream and detect when the products > cease to com > in? Celia can respond more precisely, but I believe its a product count per hour threshold that triggers the messages. If the data is late (ie WSI data has > 1 hr latency) then the # of products in that hour can be very small or zero and this can trigger the messages. > Also, how many radars are you guys processing on WSI? I know you are asking > for > all of the radars, but are you also filing them and doing other processing > directly on > iita? By policy, iita does not do any data processing. Not even filing at this point. This was a change we instituted when we took it over. Eventually, we may make local copies of the raw datastreams to have a short term archive for distribution to sites that went down for short periods of time, but for now, iita is merely a data traffic cop. I believe our sole responsibility and therefore sole authority with iita is to push data around UCAR/Universities. All of our data processing is done with RAP-owned machines, including the WSI data. We currently file all 150 radars, and render about 40 of them in real time. We might be able to render all 150 shortly. The rendered data are made available via the web at www.rap.ucar.edu/staff/pneilley/NIDS_table.html. > > Did you and Rob come to any other conclusion about the LDM latency issue > discovered > with the newer ldm? > This is getting annoying. Its not even clear to me that SCD is aware of the problem. Unidata believes the latency is due to SCD mods on the network in FL4. But I'm not convinced. WSI latency this very moment is small, but was 25 minutes when I started typing this note. Peter Neilley, NCAR/RAP address@hidden 303-497-8446