<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi-<div><br></div><div>Apologies, here is the requested information.</div><div><br></div><div>Thanks,</div><div>Pete</div><div><br></div><div><br></div><div>OS:</div><div><div>% uname -a</div><div>Linux <a href="http://redacted.gsfc.nasa.gov">redacted.gsfc.nasa.gov</a> 2.6.32-gentoo-r7 #2 SMP Thu Jul 8 11:39:03 EDT 2010 x86_64 Intel(R) Xeon(R) CPU X5460 @ 3.16GHz GenuineIntel GNU/Linux</div></div><div><br></div><div>File Information:</div><div><div>% ncdump -hs /path/to/file/Y2003/M01/MYD04_L2_ocn.aero_tc8_051.qawt.20030101.nc4</div><div>netcdf MYD04_L2_ocn.aero_tc8_051.qawt.20030101 {</div><div>dimensions:</div><div> time = UNLIMITED ; // (8 currently)</div><div> levels = 7 ;</div><div> longitude = 1152 ;</div><div> latitude = 721 ;</div><div>variables:</div><div> double time(time) ;</div><div> time:units = "hours since 2003-1-1 1" ;</div><div> time:_Storage = "chunked" ;</div><div> time:_ChunkSizes = 1 ;</div><div> double levels(levels) ;</div><div> levels:units = "hPa" ;</div><div> levels:description = "Pressure level" ;</div><div> levels:type = "plev" ;</div><div> levels:long_name = "Level" ;</div><div> levels:positive = "down" ;</div><div> levels:_Storage = "contiguous" ;</div><div> double longitude(longitude) ;</div><div> longitude:units = "degrees_east" ;</div><div> longitude:long_name = "Longitude" ;</div><div> longitude:_Storage = "contiguous" ;</div><div> double latitude(latitude) ;</div><div> latitude:units = "degrees_north" ;</div><div> latitude:long_name = "Latitude" ;</div><div> latitude:_Storage = "contiguous" ;</div><div> float aodtau(time, levels, latitude, longitude) ;</div><div> aodtau:comments = "Unknown1 variable comment" ;</div><div> aodtau:long_name = "aodtau" ;</div><div> aodtau:units = "" ;</div><div> aodtau:grid_name = "grid01" ;</div><div> aodtau:grid_type = "linear" ;</div><div> aodtau:time_statistic = "instantaneous" ;</div><div> aodtau:missing_value = 1.e+15f ;</div><div> aodtau:_Storage = "chunked" ;</div><div> aodtau:_ChunkSizes = 1, 1, 721, 1152 ;</div><div> aodtau:_DeflateLevel = 2 ;</div><div><br></div><div>// global attributes:</div><div> :Conventions = "COARDS" ;</div><div> :calendar = "standard" ;</div><div> :comments = "File" ;</div><div> :model = "geos/das" ;</div><div> :center = "gsfc" ;</div><div> :_Format = "netCDF-4" ;</div><div>}</div></div><div><br></div><div><br></div><div><br></div><div><div>ga-> q config</div><div>Config: v2.0.a7.oga.3 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn athena geotiff</div><div>Grid Analysis and Display System (GrADS) Version 2.0.a7.oga.3</div><div>Copyright (c) 1988-2009 by Brian Doty and the</div><div>Institute for Global Environment and Society (IGES) </div><div>This program is distributed WITHOUT ANY WARRANTY </div><div>See file COPYRIGHT for more information. </div><div><br></div><div>Built Thu Oct 29 17:57:08 EDT 2009 for x86_64-unknown-linux-gnu</div><div><br></div><div>This version of GrADS has been configured with the following options:</div><div> o Built on a LITTLE ENDIAN machine</div><div> o Command line editing ENABLED </div><div> <a href="http://tiswww.case.edu/php/chet/readline/rltop.html">http://tiswww.case.edu/php/chet/readline/rltop.html</a> </div><div> o printim command for image output ENABLED </div><div> <a href="http://www.zlib.net">http://www.zlib.net</a> </div><div> <a href="http://www.libpng.org/pub/png/libpng.html">http://www.libpng.org/pub/png/libpng.html</a> </div><div> <a href="http://www.libgd.org/Main_Page">http://www.libgd.org/Main_Page</a> </div><div> o GRIB2 interface ENABLED </div><div> <a href="http://www.ijg.org">http://www.ijg.org</a> </div><div> <a href="http://www.ece.uvic.ca/~mdadams/jasper">http://www.ece.uvic.ca/~mdadams/jasper</a> </div><div> <a href="http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2">http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2</a> </div><div> g2clib-1.0.5 </div><div> o NetCDF interface ENABLED </div><div> <a href="http://www.opendap.org">http://www.opendap.org</a> </div><div> libnc-dap 4.0.1-beta3-snapshot2009021712 of Mar 3 2009 14:13:33 $ </div><div> o HDF interface ENABLED </div><div> <a href="http://hdfgroup.org">http://hdfgroup.org</a> </div><div> HDF 4.2r3 </div><div> HDF5 1.8.2 </div><div> o Athena Widget GUI ENABLED</div><div> o OPeNDAP gridded data interface ENABLED</div><div> <a href="http://www.opendap.org">http://www.opendap.org</a> </div><div> libdap 3.7.10 </div><div> o OPeNDAP station data interface ENABLED</div><div> <a href="http://iges.org/grads/gadoc/supplibs.html">http://iges.org/grads/gadoc/supplibs.html</a> </div><div> libgadap 2.0.oga.1 </div><div> o GeoTIFF and KML output ENABLED</div><div> <a href="http://www.libtiff.org">http://www.libtiff.org</a> </div><div> <a href="http://geotiff.osgeo.org">http://geotiff.osgeo.org</a> </div><div><br></div><div>For additional information please consult <a href="http://iges.org/grads">http://iges.org/grads</a></div><div><br></div></div><div><div><div>On Jul 12, 2010, at 4:51 PM, Jennifer Adams wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Could you please send the output from ncdump -hs (the s is for compression info, since you have netcdf-4 files). Also send the output from 'q config' and the specs of the OS you are running on. These things are important for solving every problem. <div><br><div>--Jennifer</div><div><div><br><div><br><div><div>On Jul 12, 2010, at 4:42 PM, Colarco, Peter R. (GSFC-6133) wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi-<div><br></div><div>I am running opengrads 2.0.a7.oga.3/x86_64.</div><div><br></div><div>I have a very simple data descriptor file (below) to template a set of large-ish files (gridded 1152 x 721 x 7 points). When I simply "sdfopen" the first file and plot the first variable/first time/first level, I get my result essentially immediately. When I instead "xdfopen" the data descriptor file and try to plot the same, it takes some time (~10 sec) to plot. When I repeat the same sort of thing but operate on several times the difference in performance between the two methods is of course very noticeable.</div><div><br></div><div>The issue seems to be in the "options template" line below; taking that out and explicitly putting the first file in I can "xdfopen" the data descriptor file and plot the first variable essentially instantly. Additional metadata in the data descriptor file (e.g., from make_ctl.sh) does not help or matter as far as I can tell.</div><div><br></div><div>Can anyone suggest a solution to this problem? Am I doing something weird or wrong here?</div><div><br></div><div>Data Descriptor File:</div><div><br></div><div>dset /path/to/my/data/Y2003/M01/MYD04_L2_ocn.aero_tc8_051.qawt.%y4%m2%d2.nc4</div><div><div>options template</div><div>tdef time 248 linear 0z01jan2003 3hr</div><div><br></div><div>Thank you,</div><div>Pete Colarco</div><div><br></div><div><br></div><div><br></div><div> <div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; font-size: 12px; "><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">--------------------------------------------------------------------</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Peter Colarco</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">NASA GSFC</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Code 613.3</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">NASA Goddard Space Flight Center</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Greenbelt, MD 20771</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">301.614.6382 (ph)</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">301.614.5903 (fax)</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; "><a href="mailto:peter.r.colarco@nasa.gov">peter.r.colarco@nasa.gov</a></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; "><a href="http://hyperion.gsfc.nasa.gov/People/Colarco">http://hyperion.gsfc.nasa.gov/People/Colarco</a></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">--------------------------------------------------------------------</font></div><div><br class="webkit-block-placeholder"></div></div></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"> </div> <br></div></div>_______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br><a href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a><br></blockquote></div><br><div apple-content-edited="true"> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; font-size: 12px; "><div>--</div><div>Jennifer M. Adams</div><div>IGES/COLA</div><div>4041 Powder Mill Road, Suite 302</div><div>Calverton, MD 20705</div><div><a href="mailto:jma@cola.iges.org">jma@cola.iges.org</a></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></div> </div><br></div></div></div></div></div><span><ATT00001..txt></span></blockquote></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><span class="Apple-style-span" style="font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">--------------------------------------------------------------------</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Peter Colarco</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">NASA GSFC</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Code 613.3</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">NASA Goddard Space Flight Center</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Greenbelt, MD 20771</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">301.614.6382 (ph)</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">301.614.5903 (fax)</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; "><a href="mailto:peter.r.colarco@nasa.gov">peter.r.colarco@nasa.gov</a></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; "><a href="http://hyperion.gsfc.nasa.gov/People/Colarco">http://hyperion.gsfc.nasa.gov/People/Colarco</a></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">--------------------------------------------------------------------</font></div><div><br class="webkit-block-placeholder"></div></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline">
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