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#2896 (Jun 1, 2026, 4:36:00 PM)

remove duplicate gadi file from cluster dir

justinkinjun.hew at 4:35 PM 6/1/26

#2895 (Jun 1, 2026, 11:52:33 AM)

CHG: moving constant to ifdef

Mathieu Morlighem at 11:28 AM 6/1/26

#2894 (Jun 1, 2026, 11:26:30 AM)

export_netCDF.py: Add overwrite keyword

ken.mankoff at 6:44 AM 6/1/26

#2893 (Jun 1, 2026, 10:11:12 AM)

CHG: shielding seminc from ADOLC

Mathieu Morlighem at 10:11 AM 6/1/26

#2892 (Jun 1, 2026, 5:13:19 AM)

issmversion.py: Fix so docstring is correct and prints version

ken.mankoff at 4:06 AM 6/1/26

#2891 (Jun 1, 2026, 2:07:12 AM)

CHG: crop anything outside the data domain when interpolating dHdt

enigne at 6:28 PM 5/24/26

CHG:add options to data loaders to load from specific nc files

enigne at 10:25 PM 5/24/26

CHG: moved SEMIC from externalpackages to C++ in src/c/shared

mathieu.morlighem at 4:42 AM 5/26/26

CHG: SEMIC is not a required external package anymore

mathieu.morlighem at 7:37 AM 5/26/26

CHG: missing header file to get machine eps

mathieu.morlighem at 7:50 AM 5/26/26

CHG: replaced double by IssmDouble for CoDiPack

mathieu.morlighem at 8:06 AM 5/26/26

BUG: problem recasting IssmDouble to int

Mathieu Morlighem at 9:20 AM 5/26/26

CHG: updating now that semic and m1qn3 are natively in ISSM

Mathieu Morlighem at 10:00 AM 5/26/26

CHG: Now, a unit for TotalHydrologyFlux at grounding line is Gt yr-1.

inwoo0415 at 10:43 PM 5/27/26

BUG: Fix typos....

inwoo0415 at 12:24 AM 5/28/26

CHG: processdata.py - Fix treating element dataset.

inwoo0415 at 1:16 AM 5/28/26

CHG: cmaptools.py - Add functionality to handle LinearSegmentedColormap and string.

inwoo0415 at 10:31 PM 5/31/26

CHG: Fix typos.

inwoo0415 at 10:55 PM 5/31/26

BUG: Fix typos.

inwoo0415 at 10:56 PM 5/31/26

#2890 (May 24, 2026, 12:28:23 PM)

CHG: fixing dakota

mathieu.morlighem at 12:28 PM 5/24/26

#2889 (May 24, 2026, 8:29:55 AM)

CHG: gixing dakota version in python

Mathieu Morlighem at 8:18 AM 5/24/26

#2888 (May 24, 2026, 7:37:19 AM)

CHG: fixing dakota

mathieu.morlighem at 7:30 AM 5/24/26

#2887 (May 24, 2026, 4:18:31 AM)

CHG: streamlining QueueScript so that new clusters don't have a ton of code to write

mathieu.morlighem at 4:06 AM 5/24/26

BUG: restored classes/clusters/cluster_defaults.py

mathieu.morlighem at 4:12 AM 5/24/26

#2886 (May 22, 2026, 7:48:18 PM)

Adjusted tolerances

34657535+TidbitSoftware at 6:35 PM 5/22/26

#2885 (May 22, 2026, 5:02:25 PM)

Forgot to update Python binaries after removing static generic cluster class

34657535+TidbitSoftware at 4:59 PM 5/22/26

Also needed to clean up import and check on static generic class in waitonlock

34657535+TidbitSoftware at 5:01 PM 5/22/26

#2884 (May 22, 2026, 4:37:46 PM)

Removed static version of generic class; adjusted tolerances

34657535+TidbitSoftware at 4:37 PM 5/22/26

#2883 (May 22, 2026, 11:08:17 AM)

Testing if use of new generic class will suffice for binaries

34657535+TidbitSoftware at 11:08 AM 5/22/26

#2882 (May 22, 2026, 7:18:07 AM)

CHG: removing LaunchQueueJobIceOcean, we can call the usual LaunchQueueJob

mathieu.morlighem at 6:44 AM 5/22/26

#2881 (May 22, 2026, 6:14:09 AM)

CHG: streamlining cluster classes

mathieu.morlighem at 4:55 AM 5/22/26

CHG: port number should be an integer, not a string

mathieu.morlighem at 4:57 AM 5/22/26

BUG: fixing CoDiPack by converting PDouble to Double

Mathieu Morlighem at 5:52 AM 5/22/26

#2880 (May 21, 2026, 7:14:57 PM)

CHG: GEMB test removal of P tol in accumulation

95945328+NJSchlegel at 6:02 PM 5/21/26

#2879 (May 21, 2026, 6:13:59 PM)

CHG: working on nudging method

Mathieu Morlighem at 6:13 PM 5/21/26

#2878 (May 21, 2026, 5:01:13 PM)

CHG: ptol is too high in GEMB

95945328+NJSchlegel at 4:32 PM 5/21/26

#2877 (May 21, 2026, 9:32:32 AM)

CHG: no need to get min/max parameters when creating new elements

Mathieu Morlighem at 9:19 AM 5/21/26

CHG: we do not need InputUpdateFromIoModel anymore

Mathieu Morlighem at 9:27 AM 5/21/26

#2876 (May 21, 2026, 9:00:38 AM)

NEW: adding inversionnudging for Tim's work

mathieu.morlighem at 9:00 AM 5/21/26

#2875 (May 21, 2026, 5:11:44 AM)

CHG: streamlining all cluster classes with new defaults

mathieu.morlighem at 5:02 AM 5/21/26

#2874 (May 20, 2026, 6:00:33 AM)

CHG: a lot of code in clusters is repetitive, move Upload/Launch/Download in cluster_defaults to simplify the implementation of new cluster classes

mathieu.morlighem at 5:47 AM 5/20/26

#2873 (May 19, 2026, 11:09:15 PM)

CHG: Fix minor.

inwoo0415 at 11:01 PM 5/19/26

#2872 (May 19, 2026, 7:53:53 PM)

Adjusted tolerances

34657535+TidbitSoftware at 7:53 PM 5/19/26

#2871 (May 19, 2026, 7:02:38 PM)

CHG: Fix minor.

inwoo0415 at 6:41 PM 5/19/26

#2870 (May 19, 2026, 6:45:08 PM)

CHG: Synchronize Matlab > Python. Display a warning message if we cannot copy the file.

inwoo0415 at 6:39 PM 5/19/26

#2869 (May 19, 2026, 5:51:54 PM)

CHG: these classes do not have a port property, replace with 0

Mathieu Morlighem at 5:20 PM 5/18/26

#2868 (May 19, 2026, 9:37:00 AM)

CHG: get status from copyfile so that MATLAB does not error out, and display a warning instead

mathieu.morlighem at 9:36 AM 5/19/26

#2867 (May 18, 2026, 6:39:03 PM)

BUG: divergence.m - 2-D mesh does not require z-coordinate.

inwoo0415 at 7:14 AM 5/18/26

CHG: model is now marshalled in execution, need to take that into account when scp'ing

inwoo0415 at 6:22 PM 5/18/26

CHG: fixed UploadQueueScript now that all the files are prepared in execution

inwoo0415 at 6:22 PM 5/18/26

CHG: plot_gridded.py - Clean up code and fix bug in getcolormap.

inwoo0415 at 6:30 PM 5/18/26

#2866 (May 18, 2026, 6:21:50 PM)

BUG: divergence.m - 2-D mesh does not require z-coordinate.

inwoo0415 at 6:21 PM 5/18/26

#2865 (May 18, 2026, 5:16:09 PM)

CHG: fixed UploadQueueScript now that all the files are prepared in execution

Mathieu Morlighem at 5:15 PM 5/18/26

#2864 (May 18, 2026, 1:43:48 PM)

CHG: model is now marshalled in execution, need to take that into account when scp'ing

mansakrishna23 at 1:43 PM 5/18/26

#2863 (May 17, 2026, 4:50:57 PM)

CHG: removing extraneous printf

Mathieu Morlighem at 4:33 PM 5/17/26

CHG: removing extraneous printf

Mathieu Morlighem at 4:33 PM 5/17/26

CHG: streamlining generic queueing script

Mathieu Morlighem at 4:34 PM 5/17/26

CHG: moving old code to OLD to avoid confusion

Mathieu Morlighem at 4:44 PM 5/17/26

#2862 (May 17, 2026, 4:34:31 PM)

NEW: added clusters/unity.m new unity cluster

mathieu.morlighem at 4:26 PM 5/17/26

NEW: consolidated read_netCDF/write_netCDF should now be more robust:

Mathieu Morlighem at 4:30 PM 5/17/26

#2861 (May 15, 2026, 11:15:52 AM)

CHG: now call MAR-IA once per processor instead of per element

55120383+yinmin-liu at 10:51 AM 5/15/26

#2860 (May 15, 2026, 10:02:07 AM)

CHG: eliminating m1qn3 from Github's CI

mathieu.morlighem at 9:53 AM 5/15/26

#2859 (May 14, 2026, 5:35:20 PM)

Restore MATLAB export_netCDF.m

noreply at 5:16 PM 5/14/26

#2857 (May 14, 2026, 1:24:51 PM)

Delete src/m/andes_settings.m

noreply at 1:24 PM 5/14/26

Delete src/m/frontera_settings.m

noreply at 1:24 PM 5/14/26

#2856 (May 14, 2026, 1:04:58 PM)

frontera, andes settings

mansakrishna23 at 12:59 PM 5/13/26

BUG: adding default pertubration melt for spatial linear

mansakrishna23 at 12:39 PM 5/14/26

CHG: make sure to save outlog and errlog in execution directory if launched from another directory (no more cd)

mansakrishna23 at 12:40 PM 5/14/26

#2855 (May 14, 2026, 4:58:14 AM)

CHG: added check to warn users when execution dir needs to be cleaned up

mathieu.morlighem at 4:56 AM 5/14/26

#2854 (May 14, 2026, 4:43:07 AM)

CHG: use Dakota's output manager to figure out where to read and write files

mathieu.morlighem at 4:36 AM 5/14/26

#2853 (May 13, 2026, 9:39:18 AM)

NEW:preparing a GNN based stressbalance emulator

55120383+yinmin-liu at 9:39 AM 5/13/26

#2852 (May 13, 2026, 5:47:47 AM)

CHG: trying to fix dakota now that files are explicitly in execution

mathieu.morlighem at 5:41 AM 5/13/26

#2851 (May 13, 2026, 5:00:04 AM)

CHG: in some cases the new m1qn3 would fail with exit code 7, this should now be fixed

mathieu.morlighem at 4:45 AM 5/13/26

CHG: minor update

mathieu.morlighem at 4:46 AM 5/13/26

#2850 (May 12, 2026, 5:01:00 PM)

m1qn3 is now integrated

34657535+TidbitSoftware at 5:00 PM 5/12/26

#2849 (May 12, 2026, 4:18:16 PM)

Removing m1qn3 fence; formatting

34657535+TidbitSoftware at 4:03 PM 5/12/26

#2848 (May 12, 2026, 2:17:46 PM)

m1qn3 is now integrated

34657535+TidbitSoftware at 1:31 PM 5/12/26

#2847 (May 12, 2026, 10:20:35 AM)

CHG: fixing windows

mathieu.morlighem at 10:20 AM 5/12/26

#2846 (May 12, 2026, 7:27:30 AM)

CHG: trying to fix windows with the new format of execution/input files

mathieu.morlighem at 7:27 AM 5/12/26

#2845 (May 12, 2026, 7:11:04 AM)

CHG: better way to handle local vs remote execution

mathieu.morlighem at 7:02 AM 5/12/26

#2844 (May 12, 2026, 4:57:09 AM)

BUG: handle case when executionpath is not /Users/mmorligh/Desktop/ISSM/execution

mathieu.morlighem at 4:56 AM 5/12/26

#2843 (May 11, 2026, 8:38:04 PM)

BUG: issmscpin.py – Fix missing bracketstyle argument in the function call. Also fix the missing path variable when constructing the SCP command.

inwoo0415 at 7:23 PM 5/11/26

BUG: issmscpin.py – Fix missing bracketstyle argument in the function call. Also fix the missing path variable when constructing the SCP command.

inwoo0415 at 8:35 PM 5/11/26

#2842 (May 11, 2026, 1:17:25 PM)

NEW: now create files directly in execution/ instead of current directory to avoid clutter and overwrites

mathieu.morlighem at 1:03 PM 5/11/26

#2841 (May 11, 2026, 10:07:23 AM)

CHG: excluding test703 again because it uses bamg

Mathieu Morlighem at 9:38 AM 5/11/26

#2840 (May 11, 2026, 9:45:50 AM)

CHG: offset message to be consistent with other notifications

mathieu.morlighem at 9:40 AM 5/11/26

#2839 (May 11, 2026, 9:23:49 AM)

CHG: still erroring out on bamg adaptive mesh

Mathieu Morlighem at 9:16 AM 5/11/26

#2838 (May 11, 2026, 5:51:56 AM)

CHG: updated archives now that bamg is more robust

Mathieu Morlighem at 5:51 AM 5/11/26

#2837 (May 11, 2026, 5:36:42 AM)

CHG: updated Archives now that bamg is more portable

Mathieu Morlighem at 5:25 AM 5/11/26

CHG: adding more tests to Mac M now that bamg is more portable

Mathieu Morlighem at 5:28 AM 5/11/26

#2836 (May 11, 2026, 5:07:25 AM)

CHG: making Bamg more robust to produce the same mesh across platform. Right now meshes are slightly different on mac and linux. This commit should fix it

mathieu.morlighem at 4:58 AM 5/11/26

#2835 (May 10, 2026, 8:35:06 PM)

BUG: Fix bugs in interpISMIP7AntarcticaSMB.m.

inwoo0415 at 6:43 PM 5/10/26

#2834 (May 8, 2026, 7:07:14 AM)

NEW: m1qn3 now returns the BEST X/G that it found

mathieu.morlighem at 5:50 AM 5/8/26

NEW: added support for 3.25

mathieu.morlighem at 5:50 AM 5/8/26

#2833 (May 7, 2026, 6:47:02 PM)

CHG: GEMB add option to map using xy cooordinates

95945328+NJSchlegel at 4:59 PM 5/7/26

CHG: GEMB mapping fix xy call for AD

95945328+NJSchlegel at 5:21 PM 5/7/26

CHG: GEMB matlab fix comments

95945328+NJSchlegel at 5:28 PM 5/7/26

#2832 (May 7, 2026, 3:42:05 PM)

CHG: plotmodel.py - Enable to control axes pad.

inwoo0415 at 10:55 PM 5/1/26

#2831 (May 7, 2026, 9:05:27 AM)

CHG: fixed if/else wrong logic when intrusion is on

mathieu.morlighem at 8:27 AM 5/7/26

BUG: fixed intrusion/stabilization bug that only showed up on mac

mathieu.morlighem at 8:41 AM 5/7/26

CHG: added mac tests back now that bug is fixed

mathieu.morlighem at 9:02 AM 5/7/26

#2830 (May 7, 2026, 5:29:45 AM)

CHG: VolumeAboveFloatation.m now calls function HeightAboveFloatation(). Cleanup of some logic and documentation, and allow flags to be used independently from transient time step. NEW: HeightAboveFloatation.m returns the per-element height above floatation over the entire domain defined by ice levelset. Together, the output is not changed, but is more flexible and allows HAF to be easily returned for seeing contributions (and changes) to VAF on the elements.

benjamingetraer at 5:27 AM 5/7/26

#2829 (May 6, 2026, 7:17:40 AM)

CHG: ignoring some more files

Mathieu Morlighem at 7:09 AM 5/6/26

#2828 (May 6, 2026, 6:14:51 AM)

CHG: relaxed tolerances

mathieu.morlighem at 6:02 AM 5/6/26

#2827 (May 6, 2026, 5:07:08 AM)

CHG: getting rid of all gotos

mathieu.morlighem at 4:59 AM 5/5/26

NEW: now using C++ implementation of m1qn3 instead of external package

mathieu.morlighem at 5:01 AM 5/5/26

CHG: fixed m1qn3 so that it gives the same results as fortran

Mathieu Morlighem at 11:39 AM 5/5/26

CHG: now AD results should be identical as before. One more bug to resolve

Mathieu Morlighem at 5:06 AM 5/6/26

#2826 (May 5, 2026, 4:36:52 AM)

NEW: added C++ version of M1QN3, more to come

mathieu.morlighem at 4:27 AM 5/5/26

#2825 (May 4, 2026, 6:49:15 PM)

Adjusted tolerances

34657535+TidbitSoftware at 6:48 PM 5/4/26

#2824 (May 4, 2026, 2:57:26 PM)

CHG: fetch lon and lat when using SMBemulator

55120383+yinmin-liu at 2:19 PM 5/4/26

CHG: updated variable Enum names of SMB emulator

55120383+yinmin-liu at 2:22 PM 5/4/26

CHG: changed mass balance scaling to day2second

55120383+yinmin-liu at 2:22 PM 5/4/26

#2823 (May 4, 2026, 12:23:02 PM)

CHG: add GEMB mapping with neighbors for interpolation

95945328+NJSchlegel at 4:28 PM 5/1/26

CHG: add static cast to GEMB mapping neighbor indices

95945328+NJSchlegel at 4:56 PM 5/1/26

CHG: add static cast to GEMB double to int mapping neighbor indices

95945328+NJSchlegel at 6:04 PM 5/1/26

CHG: GEMB mapping casting check

95945328+NJSchlegel at 6:44 PM 5/1/26

CHG: make GEMB mapped neighbors ints

95945328+NJSchlegel at 11:27 AM 5/2/26

CHG: merge with main enum

95945328+NJSchlegel at 11:33 AM 5/2/26

CHG: merge with main enum

95945328+NJSchlegel at 11:34 AM 5/2/26

CHG: testing adThresh in GEMB nightly 258

95945328+NJSchlegel at 8:47 AM 5/4/26

CHG: Test eIdx settings in GEMB test 258

95945328+NJSchlegel at 9:22 AM 5/4/26

CHG: GEMB mapping fix AD and add mapping test if eIdx

95945328+NJSchlegel at 9:45 AM 5/4/26

CHG: GEMB lower tol for eIdx

95945328+NJSchlegel at 10:06 AM 5/4/26

CHG: clarify GEMB class mapping comments

95945328+NJSchlegel at 10:41 AM 5/4/26

#2822 (May 3, 2026, 6:38:56 PM)

CHG: trying to fix AD

mathieu.morlighem at 6:24 PM 5/3/26

#2821 (May 3, 2026, 2:38:50 PM)

CHG: fixed some typos

mathieu.morlighem at 2:24 PM 5/3/26

#2820 (May 3, 2026, 2:20:47 PM)

CHG: updated date in copyright

mathieu.morlighem at 2:12 PM 5/3/26

CHG: style fix - removed commas at the end of if/for/while

mathieu.morlighem at 2:15 PM 5/3/26

#2819 (May 2, 2026, 2:40:37 PM)

Correcting another Python lib/header discovery command

34657535+TidbitSoftware at 1:38 PM 5/2/26

#2818 (May 2, 2026, 1:34:47 PM)

Use get method to avoid square brackets (treated as quotes by Autom4ke) entirely.

34657535+TidbitSoftware at 1:34 PM 5/2/26

#2817 (May 1, 2026, 11:42:08 PM)

CHG: Add a new feature to basalforcingsismip7. Introduce the islocal parameter; however, its definition has not yet been determined.

inwoo0415 at 10:42 PM 5/1/26

#2816 (May 1, 2026, 10:44:30 PM)

CHG: add default emissiving to GEMB and add option 3 for te change with melt present

inwoo0415 at 10:30 PM 5/1/26

#2815 (May 1, 2026, 10:25:47 PM)

CHG: Fix indent in interpISMIP7AntarcticaOcn.m.

inwoo0415 at 10:25 PM 5/1/26

NEW: Initialize interpISMIP7AntarcticaSMB.m function.

inwoo0415 at 10:25 PM 5/1/26

#2814 (May 1, 2026, 4:25:51 PM)

NEW: viscoussampling parameter allows greensfunctions in the grd core to be sampled non-linearly in time, speeding up runs with many time steps

lambert.caron at 3:10 PM 5/1/26

viscoussampling better default value

lambert.caron at 3:23 PM 5/1/26

#2813 (May 1, 2026, 1:58:13 PM)

CHG: add default emissiving to GEMB and add option 3 for te change with melt present

95945328+NJSchlegel at 1:22 PM 5/1/26

#2812 (May 1, 2026, 1:41:18 AM)

CHG: Synchronize MATLAB and Python implementations for basalstress and effectivepressure.

inwoo0415 at 1:28 AM 5/1/26

#2811 (Apr 30, 2026, 1:40:27 PM)

CHG:completed the 12 inputs MAR-IA SMB emulator

55120383+yinmin-liu at 1:06 PM 4/30/26

#2810 (Apr 30, 2026, 10:11:55 AM)

Autom4ke collapses square brackets

34657535+TidbitSoftware at 10:11 AM 4/30/26

#2809 (Apr 30, 2026, 8:53:45 AM)

BUG: MATLAB's mexPrintf is not thread safe, do not pring anything within a thread

Mathieu Morlighem at 8:53 AM 4/30/26

#2808 (Apr 29, 2026, 8:06:15 PM)

CHG: bug fix - move check for md.friction.coupling from basalstress.m to effectivepressure.m, move effectivepressure() call in basalstress.m to within the switch/case statements, ie do not call effective pressure at all for frictionweertman.

benjamingetraer at 7:57 PM 4/29/26

#2807 (Apr 29, 2026, 2:15:23 PM)

CHG: basalstress.m - cleaned up some code and improved documentation.

benjamingetraer at 10:42 AM 4/29/26

NEW: effectivepressure.m - calculate effective pressure according to md.friction.coupling

benjamingetraer at 10:43 AM 4/29/26

CHG: basalstress.m - cleaned up some code and improved documentation.

benjamingetraer at 11:00 AM 4/29/26

NEW: effectivepressure.m - calculate effective pressure according to md.friction.coupling

benjamingetraer at 11:04 AM 4/29/26

restore basalstress from upstream

benjamingetraer at 11:13 AM 4/29/26

CHG: improve clarity and documentation of basalstress.m

benjamingetraer at 12:26 PM 4/29/26

CHG: basalstress.m now uses effectivepressure.m to calculate effective pressure.

benjamingetraer at 12:57 PM 4/29/26

CHG: typos in effectivepressure.m header

benjamingetraer at 1:00 PM 4/29/26

#2806 (Apr 29, 2026, 11:07:10 AM)

Viscoelastic NR archive update, + test2011 realigned to consistent maxiter

lambert.caron at 11:13 AM 4/29/26

#2805 (Apr 29, 2026, 9:54:21 AM)

CHG: Claude found some mistakes that are now corrected

mathieu.morlighem at 9:53 AM 4/29/26

#2804 (Apr 28, 2026, 11:32:23 AM)

CHG: pull versions from previous BedMachine

Mathieu Morlighem at 11:31 AM 4/28/26

#2803 (Apr 28, 2026, 10:03:28 AM)

CHG: fixed some bugs that Claude found

mathieu.morlighem at 10:02 AM 4/28/26

#2802 (Apr 27, 2026, 6:53:46 PM)

CHG: a lot of people get confused and run ./configure, forgetting .sh. Added a check that at least --prefix is provided as a safety measure to help users figure out their mistake

Mathieu Morlighem at 6:37 PM 4/27/26

#2801 (Apr 25, 2026, 1:48:49 AM)

CHG: some more fixes from Claude:

mathieu.morlighem at 1:01 AM 4/25/26

CHG: adding this param back, although there is no constructor etc

mathieu.morlighem at 1:03 AM 4/25/26

#2800 (Apr 25, 2026, 12:49:35 AM)

Update sea-level barystatic contribution handling

lambert.caron at 2:53 PM 4/21/26

Fix sea-level change barystatic finalization

lambert.caron at 5:39 PM 4/24/26

#2799 (Apr 23, 2026, 10:16:34 PM)

CHG: Update ISMIP7 basalforcings: Add "delta_t" for calibrating thermal forcing depending on basin. Fix interpISMIP7AntarcticaOcn for loading thermal forcing and salinity of GCM.

inwoo0415 at 8:34 PM 4/23/26

#2798 (Apr 23, 2026, 9:22:19 PM)

CHG: Synchronize Matlab > Python "displayunsed" in pairoptions.py.

inwoo0415 at 9:17 PM 4/23/26

#2797 (Apr 23, 2026, 8:11:20 PM)

CHG: basalforcingsismip7.py - Add structtoobj.

inwoo0415 at 8:00 PM 4/23/26

CHG: interpISMIP7AntarcticaOcn.py - Add remote 'simba41' machine.

inwoo0415 at 8:00 PM 4/23/26