[ncl-talk] possible addfile memory leak

Andy Penny andybpenny at gmail.com
Thu Jul 13 16:14:04 MDT 2017

Hi all,

I've encountered a memory issue when opening grib files in a loop using
NCL's "addfile" function. Memory usage increases over time, even when I
delete the file. I've copied a sample script below to demonstrate this. Is
this normal behavior for the "addfile" function? And if so, does anyone
know of a way to avoid this issue? I'm using NCL v6.4, binaries from:


gribfile= "/data2/gfs/2017/20170710/gfs.20170710t12z.pgrb2f120.grib2"

do j = 0, 1000000
    do i = 0, 1000000

a = addfile(gribfile, "r")


  end do
end do
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