Subject: USPEX v25.0 rejects 2D calculationType = -200 although the v25 manual documents it Hello USPEX team,

[Eric Yang]

Hello USPEX team,

I am using USPEX v25.0 (reported by uspex --version as November 11, 2025).

When I try a 2D run with:

calculationType = -200

USPEX stops during input parsing with:

ValueError: Поддерживаются calculationType только 300 или 301.

So the current v25.0 executable appears to accept only 300/301.

However, the USPEX v25 manual still explicitly mentions 2D crystals and even refers to calculationType = -200 in the Latticevalues section.

Could you please clarify whether:

1. 2D (-200/-201) is currently supported in v25.0,
2. this is a bug in the distributed binary/input reader,
3. or there is a different v25 build required for 2D calculations?

I can provide INPUT.txt, OUTPUT.txt, and log files.

Best regards

[Somnath Paitandi]

It is 200 and 201 not -200 or -201

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[Eric Yang]

Thank you very much! I have tried 200 or 201. Unfortunately, same errors were encontered. Here is my INPUT.txt.

PARAMETERS EVOLUTIONARY ALGORITHM
******************************************
*      TYPE OF RUN AND SYSTEM            *
******************************************
USPEX : calculationMethod (USPEX, VCNEB, META)
200 : calculationType (2D fixed-composition)
% atomType
Ge P
% EndAtomType
% numSpecies
2 3
% EndNumSpecies
10.0  : thicknessS
18.0  : vacuumSize
5     : minAt
20    : maxAt
% optType
1
% EndOptType
% symmetries
2-80
% EndSymmetries
20    : populationSize
30    : initialPopSize
25    : numGenerations
8     : stopCrit
0.60  : bestFrac

[Somnath Paitandi]

You have done a little mistake in thickness and vacuumsize. You can mail me at s.pai...@iitg.ac.in, I will share you the exact input file. I have done this type of calculation some days ago.

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[Eric Yang]

Thank you very much! I have just sent an email to your inbox regarding this. Could you please share the exact input file with me?

Best regards, Eric