running python scripts using visit and argparse

[markcmiller86]

Date: Tue, 20 Oct 2020 08:32:56 -0700
From: notifications at github.com (Charles Doutriaux)
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Hello,

I have a python script that uses both visit and argparse up until this week my script had the
following lines to make it work

'''python
p = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
p.add_argument('--visit', default='/usr/gapps/visit/current')
# lots of other p.add_argument here
sys.path.insert(0, os.path.join(
args.visit, 'linux-x86_64/lib/site-packages'))
pth = os.environ['PATH']
pth = '{}/bin:{}'.format(os.path.dirname(args.visit), pth)
os.environ['PATH'] = pth
import visit  # noqa
visit.LaunchNowin()
'''

And everything worked fine with my regular python

But today the `visit.LaunchNoWin()` line returns (on rztopaz and rzalastor):
'''bash
ERROR: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by
/usr/gapps/visit/3.1.3/linux-x86_64/lib/libvisitcommon.so)
'''

visit launches fine from the command line. So I figured I would just launch via -cli -s

Unfortunately using
'''
/usr/gapps/visit/bin/visit -cli  -nowin -s ~/git/feature-detection/drivers/elements_snapshot.py -s
crp.sql -o ../Hohlraum/HWH_domain_18.ftThresholdChge_0.5.ftNoZ_n.ftNumSeq_10.ftThreshold_0.8.laserPo
werMult_1.0.minimalAle_0.NODES_2.NODES_XENA_1.PROC_72.PROCS_XENA_18.meshResolution_0.15.foamDensity_
0.35/pngs
'''

Leads to mangling of the `-s` options and other options seems to be passed to visit as well.

So my question are
1. Any idea how to fix the  `GLIBCXX_3.4.20' not found`
2. If not how can I use argparse and visit -cli together?

Thanks.

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[markcmiller86]

Date: Tue, 20 Oct 2020 08:41:46 -0700
From: notifications at github.com (Charles Doutriaux)
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Adding:
export LD_LIBRARY_PATH=/usr/tce/packages/gcc/gcc-4.9.3/lib64
To my path fixed the loading issue. (figured out this path by using `ldd` on the problematic library

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[markcmiller86]

Date: Tue, 20 Oct 2020 08:42:15 -0700
From: notifications at github.com (Charles Doutriaux)
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I would still like to hera about using visit -cli and argparse together though.

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[markcmiller86]

Date: Tue, 20 Oct 2020 08:43:36 -0700
From: notifications at github.com (Charles Doutriaux)
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Reopened #165.

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[markcmiller86]

Date: Tue, 20 Oct 2020 08:48:18 -0700
From: notifications at github.com (Cyrus Harrison)
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The std lib path issue is a result of the system python being compiled with different compilers and
or different settings than VisIt's python.  Glad you could fix with LD_LIB, depending on how much
the compilers or the config args change between the two, importing might not even be possible.

visit uses the same launcher to launch all installed version.

If you want the equiv of:

`/usr/gapps/visit/bin/visit -v 3.1.3`

You could use:

`visit.AddArgument('-v 3.1.3')`

Before the call to:

`visit.LaunchNoWin()`

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[markcmiller86]

Date: Thu, 20 May 2021 09:54:13 -0700
From: notifications at github.com (Eric Brugger)
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Closed #165.

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