MAPLE

Machine-learning Potential for Landscape Exploration — a fast, GPU-accelerated computational chemistry toolkit powered by machine learning potentials.

Features

Comprehensive computational chemistry with ML potentials

ML Potentials

Support for ANI, AIMNet2, MACE-OFF, UMA, and more. Near-DFT accuracy at a fraction of the cost.

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Geometry Optimization

L-BFGS, RFO, steepest descent, conjugate gradient, DIIS, and bracketing L-BFGS methods.

Transition States

NEB, CI-NEB, P-RFO, Dimer, Growing String, AutoNEB methods for saddle point search.

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Reaction Paths

IRC with GS, LQA, HPC, and EulerPC integrators. Verify TS connectivity to reactants and products.

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Vibrational Analysis

Normal mode analysis, RRHO thermochemistry, IR spectra. Mass-weighted Hessian diagonalization.

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PES Scanning

1D to N-dimensional relaxed or rigid scans. Map energy landscapes along chosen coordinates.

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Solvation

GBSA implicit solvation and explicit solvent models. DFT-D4 dispersion corrections.

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GPU Accelerated

CUDA support for ML potential evaluation. Orders of magnitude faster than traditional QM.

Quick Example

A simple geometry optimization with MAPLE

# Optimize ethanol with the UMA potential
#model=uma
#opt(method=lbfgs)
#device=gpu0

C   -0.748   0.014   0.025
C    0.748  -0.014  -0.025
O    1.170   0.016   1.330
H   -1.155  -0.888  -0.460
H   -1.096   0.888  -0.530
H   -1.155   0.049   1.065
H    1.148  -0.912   0.457
H    1.096   0.869   0.513
H    0.802   0.842   1.742