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I used to have a similar issue (may not be exactly the same). </div>
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Dennis' approach greatly improved the efficiency of interpolation problem: <a href="http://mailman.ucar.edu/pipermail/ncl-talk/2018-April/011942.html" id="LPlnk730824">http://mailman.ucar.edu/pipermail/ncl-talk/2018-April/011942.html</a> </div>
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Cheers!</div>
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Xiaoming</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> ncl-talk <ncl-talk-bounces@ucar.edu> on behalf of Michael Toy - NOAA Affiliate <michael.toy@noaa.gov><br>
<b>Sent:</b> Monday, March 25, 2019 5:19 PM<br>
<b>To:</b> Ncl-talk<br>
<b>Subject:</b> [ncl-talk] ESMF_regrid using too much memory</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Hello,
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<div class="">I am trying to conservatively regrid from a 3km x 3km horizontal to grid to a 0.5deg x 0.5deg grid (both lat-lon grids). The data is WRF model output. The source (fine) grid dimensions are 2190 x 1330 grid points. I’m looping over a number
of times and vertical levels with masked data (I’m using the Opt@SrcGridMask attribute). My script works fine for smaller domains, but with the computing resources I’m working on, I can’t get the large domain computed because the memory allocation is exceeded
(20GB). The largest array I have in my script is about 0.75GB in size (float). It seems there’s a variable in the ESMF package that grows indefinitely, perhaps?</div>
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<div class="">I’m attaching my NCL script. Please let me know if you have any questions. Thank you.</div>
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<div class="">Best regards,</div>
<div class="">Mike</div>
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Michael Toy</div>
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Research Scientist, Model Development Branch</div>
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NOAA Earth System Research Lab, GSD</div>
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325 Broadway, Boulder, Colorado</div>
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<a href="mailto:Michael.Toy@noaa.gov" class="">Michael.Toy@noaa.gov</a></div>
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+1-303-497-4061</div>
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