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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi Steve Now I understand! Then, the size of ldm.pq is always the same and will not disturb the ingestion of data. Thanks a lot 2010/11/19 Carina Padilha <carina.padilha@xxxxxxxxx> > Hi Gilbert and Daryl > > Thanks for your fast answer. Yes, I am using LDM 6.8.1. I changed the file > ldmadmin-pl.conf to $pq_size = "4G", because I am ingesting data from > CONDUIT (GFS model). The ldm.pq file has around 4 G (4 075 618 304), that is > why I want to delete it. > "This 'file' can be thought of as a rotating queue of data slots where > products are inserted, deleted, etc as the running LDM processes see fit." > Then, I can't modify it, the products will go out of the file just by LDM, > and it will be always around 4 G? One more question: so, the size of this > file will not disturb the ingestion of data by LDM? > I am asking this because I had problems to receive data from CONDUIT (GFS > 12hs) and I thought that maybe the problem was the size of the file ldm.pq. > Using ldmadmin watch, I saw that the model was acessed correctly, but the > folder at my machine (order in pqact) was empty. > > The lines of pqact: > CONDUIT ^/data/nccf/com/gfs/prod/gfs\.(.*)/gfs\.t..z\.pgrb2f(.*) > !grib2/ncep/GFS/#000/(.*)! > FILE /usr/local/ldm/data/modelos/NCEP/GFS/50km/GFS50_\1.grib2 > > Thanks a lot > > 2010/11/19 daryl herzmann <akrherz@xxxxxxxxxxx> > > On Fri, 19 Nov 2010, Carina Padilha wrote: >> >> I have problems with the product queue, I think that people that are >>> using ldm since long time can help me. The file ldm.pq is too big, I want to >>> clean it and I don't know how to do it. I delete the file using ldmadmin >>> delqueue and create again with ldmadmin mkqueue, but the file returns with >>> the same size. I stop and start ldm and nothing happens. I use ldmadmin >>> clean, but I think it's not the problem, nothing happens. I read a lot about >>> this product queue and how to work with it, but it is not clear for me how >>> to take data from it and how to delete information in it. Can someone help >>> me to find the problem? Thanks >>> >> >> The LDM queue file is a fixed file size based on what you have set in your >> etc/ldmadmin-pl.conf file (look at $pq_size). This 'file' can be thought of >> as a rotating queue of data slots where products are inserted, deleted, etc >> as the running LDM processes see fit. To take data from it, check out the >> 'pqcat' command, which you can use to dump out products by matching the >> names they are stored in the queue under. >> >> >> http://www.unidata.ucar.edu/software/ldm/ldm-current/basics/product-queue.html >> >> daryl >> >> -- >> /** >> * Daryl Herzmann >> * Assistant Scientist -- Iowa Environmental Mesonet >> * http://mesonet.agron.iastate.edu >> */ >> >> >
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