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[Bug]: GraphConverter.convert silently truncates atom_pos/cell to float32, ignoring the calculator's requested dtype

bugSomething isn't workingSomething isn't working

Status: Open.

#171 In microsoft/mattersim;

· ellalbolland opened on Aug 11, 2026

[Bug]:MatterSimCalculator.__setstate__ ignores saved model architecture, causing copy() to rebuild the wrong-sized model

bugSomething isn't workingSomething isn't working

Status: Open.

#169 In microsoft/mattersim;

· ellalbolland opened on Aug 3, 2026

Dependency management

bugSomething isn't workingSomething isn't working

Status: Open.

#165 In microsoft/mattersim;

· J. George (JaGeo) opened on Jun 18, 2026

Three critical regressions in MatterSim 1.2.5: TorchSim NaNs, CUDA fine-tune device mismatch, and incorrect batched three-body indices

Status: Open.

#163 In microsoft/mattersim;

· YU Zhan (sek1ro-yuzzz) opened on Jun 9, 2026

[Bug]: TorchSim backend returns NaN on some structures

bugSomething isn't workingSomething isn't working

Status: Open.

#162 In microsoft/mattersim;

· Gael Huynh (akwarii) opened on Jun 9, 2026