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Introduction

The kernel of the Dalton2016 suite is the two powerful molecular electronic structure programs, Dalton and LSDalton. Together, the two programs provide extensive functionality for the calculations of molecular properties at the HF, DFT, MCSCF, and CC levels of theory. Many of these properties are only available in the Dalton2016 suite.

Modules

$ module load nixpkgs/16.09 intel/2016.4 openmpi/2.0.2 dalton/2017-alpha

Open MPI dependency

dalton/2017-alpha depends on a non-default version of Open MPI. For more on the module command see Using modules.

Usage

Here is an example:

  • Dalton input file: dft_rspexci_nosym.dal (see the examples below).
  • Molecule specification: H2O_cc-pVDZ_nosym.mol (see the examples below).
  • To use the atomic basis set installed with the program, supply option -b ${BASLIB} to the command line (see the examples below).
  • The number of processes can be set using a command line option or an environment variable:
    • Add the option -N ${SLURM_NTASKS} to the launcher command line (refer to Script 1 in the examples below);
    • or, export DALTON_NUM_MPI_PROCS=${SLURM_NTASKS} (refer to Script 2 in the examples below).

To run Dalton, load the module and use the launcher dalton:

dalton -b ${BASLIB} -N ${SLURM_NTASKS}  -dal dft_rspexci_nosym.dal  -mol H2O_cc-pVDZ_nosym.mol

or

export DALTON_NUM_MPI_PROCS=${SLURM_NTASKS}
dalton -b ${BASLIB}  -dal dft_rspexci_nosym.dal  -mol H2O_cc-pVDZ_nosym.mol

Examples: scripts and input files

Example 1: dft_rspexci_nosym

dft_rspexci_nosym.dal
**DALTON INPUT
.RUN RESPONSE
**INTEGRALS
.PROPRINT
**WAVE FUNCTIONS
.DFT
 B3LYP
**RESPONSE
*LINEAR
.SINGLE RESIDUE
.ROOTS
 3
**END OF DALTON INPUT
H2O_cc-pVDZ_nosym.mol
BASIS
cc-pVDZ
H2O

    2    0
        8.    1
O     0.0  0.0000000000 0.0
        1.    2
H1    1.430    0.0  1.1
H2   -1.430    0.0  1.1
run_dalton_job.sh
#!/bin/bash

#SBATCH --nodes=1
#SBATCH --ntasks-per-node=4
#SBATCH --mem-per-cpu=3500M
#SBATCH --time=00-30:00

# Load the module: 

module load nixpkgs/16.09  intel/2016.4  openmpi/2.0.2 dalton/2017-alpha

# Setting the variables:

dltonlaun=dalton
dltonexec=dalton.x
daltoninput=dft_rspexci_nosym.dal
daltonmol=H2O_cc-pVDZ_nosym.mol

echo "Starting run at: `date`"

echo "Running the example: INPUT=${daltoninput} - Molecule=${daltonmol}"

${dltonlaun} -b ${BASLIB} -N ${SLURM_NTASKS}  -dal ${daltoninput}  -mol ${daltonmol}

echo "Program finished with exit code $? at: `date`"
run_dalton_job.sh
#!/bin/bash

#SBATCH --nodes=1
#SBATCH --ntasks-per-node=2
#SBATCH --mem-per-cpu=3500M
#SBATCH --time=00-30:00

# Load the module: 

module load nixpkgs/16.09  intel/2016.4  openmpi/2.0.2 dalton/2017-alpha

# Setting the variables:

dltonlaun=dalton
dltonexec=dalton.x
daltoninput=dft_rspexci_nosym.dal
daltonmol=H2O_cc-pVDZ_nosym.mol

# Set the number of cores DALTON_NUM_MPI_PROCS to ${SLURM_NTASKS}

export DALTON_NUM_MPI_PROCS=${SLURM_NTASKS}

echo "Starting run at: `date`"

echo "Running the example: INPUT=${daltoninput} - Molecule=${daltonmol}"

${dltonlaun} -b ${BASLIB}  -dal ${daltoninput}  -mol ${daltonmol}

echo "Program finished with exit code $? at: `date`"

Example 2: dft_rspexci_sym.dal

dft_rspexci_sym.dal
**DALTON INPUT
.RUN RESPONSE
**INTEGRALS
.PROPRINT
**WAVE FUNCTIONS
.DFT
 B3LYP
**RESPONSE
*LINEAR
.SINGLE RESIDUE
**END OF DALTON INPUT
H2O_cc-pVDZ_sym.mol
BASIS
cc-pVDZ
H2O

    2
        8.    1
O     0.0  0.0000000000 0.0
        1.    2
H1    1.430    0.0  1.1
H2   -1.430    0.0  1.1
run_dalton_job.sh
#!/bin/bash

#SBATCH --nodes=1
#SBATCH --ntasks-per-node=4
#SBATCH --mem-per-cpu=3500M
#SBATCH --time=00-30:00

# Load the module: 

module load nixpkgs/16.09  intel/2016.4  openmpi/2.0.2 dalton/2017-alpha

# Setting the variables:

dltonlaun=dalton
dltonexec=dalton.x
daltoninput=dft_rspexci_sym.dal
daltonmol=H2O_cc-pVDZ_sym.mol

echo "Starting run at: `date`"

echo "Running the example: INPUT=${daltoninput} - Molecule=${daltonmol}"

${dltonlaun} -b ${BASLIB} -N ${SLURM_NTASKS}  -dal ${daltoninput}  -mol ${daltonmol}

echo "Program finished with exit code $? at: `date`"

```bash title="run_dalton_job.sh"

!/bin/bash

SBATCH --nodes=1

SBATCH --ntasks-per-node=4

SBATCH --mem-per-cpu=3500M

SBATCH --time=00-30:00

Load the module:

module load nixpkgs/16.09 intel/2016.4 openmpi/2.0.2 dalton/2017-alpha

Setting the variables:

dltonlaun=dalton dltonexec=dalton.x daltoninput=dft_rspexci_sym.dal daltonmol=H2O_cc-pVDZ_sym.mol

Set the number of cores DALTON_NUM_MPI_PROCS to ${SLURM_NTASKS}

export DALTON_NUM_MPI_PROCS=${SLURM_NTASKS}

echo "Starting run at: date"

echo "Running the example: INPUT=${daltoninput} - Molecule=${daltonmol}"

${dltonlaun} -b ${BASLIB} -dal ${daltoninput} -mol ${daltonmol}

echo "Program finished with exit code $? at: date"