[ncl-talk] Error initializing udunits-2 unit system

[Jared Lee]

Hi, I have a follow-up on my original ticket from 10 Aug. I just discovered
that I get the udunits-2 error mentioned in the previous email if I call
ut_string_fix on its own. However, if I call ut_string and THEN call
ut_string_fix, then I get no error and my script runs normally. So it
appears that there's a bug in ut_string_fix in how it's calling the
udunits-2 library. Sorry to keep finding bugs in this script.

Again, this is a problem with NCL v6.4.0, loading a special pre-release
version of ut_string_fix for v6.5.0 (after I found an earlier bug with the
v6.4.0 ut_string_fix function). I do not know if this was fixed for NCL
v6.5.0 because I'm waiting for gnu compilers to be installed on my own
workstation first, and NCL v6.5.0 is not yet installed on cheyenne, either.

Jared

On Fri, Aug 10, 2018 at 5:15 PM Jared Lee <jaredlee at ucar.edu> wrote:

> Hi ncl-talk,
>
> I'm encountering an error I've never seen before, and which doesn't show
> up at all in ncl-talk archives. I'm running NCL v6.4.0 on Cheyenne, and I'm
> calling a special bug-fix to the ut_string_fix function (it's what is now
> default in v6.5.0, I believe). When I call the ut_string_fix function with
> at least some specific values (I haven't done exhaustive testing, but I've
> done a few tests that yield the same issue), I get the error:
>
> "Error initializing udunits-2 unit system"
>
> Here's a simple script that demonstrates the issue:
> ==========
> load "/glade/u/home/jaredlee/tools/nclscripts/functions/ut_string_fix.ncl"
> begin
>
> obs_time = (/113976.d, 114720.d, 115392.d/)
> obs_time at units = "hours since 2000-01-01 00:00:00"
>
> mo_nums1 = ut_string_fix(obs_time, "%N")
> print(mo_nums1)
> mo_nums2 = stringtoint(ut_string_fix(obs_time, "%N"))
> print(mo_nums2)
>
> end
> ==========
>
> And here is the output I get when executing this script:
>
> ==========
> jaredlee at cheyenne6:~/tools/nclscripts> ncl bug_udunits2.ncl
>  Copyright (C) 1995-2017 - All Rights Reserved
>  University Corporation for Atmospheric Research
>  NCAR Command Language Version 6.4.0
>  The use of this software is governed by a License Agreement.
>  See http://www.ncl.ucar.edu/ for more details
> Error initializing udunits-2 unit system
> jaredlee at cheyenne6:~/tools/nclscripts>
> ==========
>
> Does anyone have any ideas how to fix this? Is this something that
> cislhelp needs to be involved in to fix on cheyenne?
>
> Jared
>
> --
> ===============================
> Jared A. Lee, Ph.D.
> Project Scientist II
> Research Applications Laboratory
> National Center for Atmospheric Research
> Boulder, Colorado, USA
>
> Member, AMS Planning Commission
>
> Email: jaredlee at ucar.edu (w)
> Phone: 303.497.8485 (w)
> Web: https://staff.ucar.edu/users/jaredlee
> ===============================
>


-- 
===============================
Jared A. Lee, Ph.D.
Project Scientist II
Research Applications Laboratory
National Center for Atmospheric Research
Boulder, Colorado, USA

Member, AMS Planning Commission

Email: jaredlee at ucar.edu (w)
Phone: 303.497.8485 (w)
Web: https://staff.ucar.edu/users/jaredlee
===============================
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