mirror of https://gitlab.com/QEF/q-e.git
223 lines
5.0 KiB
Bash
Executable File
223 lines
5.0 KiB
Bash
Executable File
#!/bin/sh
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# run from directory where this script is
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cd `echo $0 | sed 's/\(.*\)\/.*/\1/'` # extract pathname
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EXAMPLE_DIR=`pwd`
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# check whether echo has the -e option
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if test "`echo -e`" = "-e" ; then ECHO=echo ; else ECHO="echo -e" ; fi
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$ECHO
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$ECHO "$EXAMPLE_DIR : starting"
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$ECHO
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$ECHO "This example shows how to use pw.x, ph.x and d3 to calculate the"
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$ECHO "third-order expansion coefficients of the total energy of Si."
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# set the needed environment variables
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. ../environment_variables
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# required executables and pseudopotentials
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BIN_LIST="pw.x ph.x d3.x"
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PSEUDO_LIST="Si.vbc.UPF"
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$ECHO
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$ECHO " executables directory: $BIN_DIR"
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$ECHO " pseudo directory: $PSEUDO_DIR"
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$ECHO " temporary directory: $TMP_DIR"
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$ECHO " checking that needed directories and files exist...\c"
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# check for directories
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for DIR in "$BIN_DIR" "$PSEUDO_DIR" ; do
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if test ! -d $DIR ; then
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$ECHO
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$ECHO "ERROR: $DIR not existent or not a directory"
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$ECHO "Aborting"
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exit 1
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fi
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done
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for DIR in "$TMP_DIR" "$EXAMPLE_DIR/results" ; do
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if test ! -d $DIR ; then
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mkdir $DIR
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fi
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done
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cd $EXAMPLE_DIR/results
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# check for executables
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for FILE in $BIN_LIST ; do
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if test ! -x $BIN_DIR/$FILE ; then
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$ECHO
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$ECHO "ERROR: $BIN_DIR/$FILE not existent or not executable"
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$ECHO "Aborting"
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exit 1
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fi
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done
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# check for pseudopotentials
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for FILE in $PSEUDO_LIST ; do
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if test ! -r $PSEUDO_DIR/$FILE ; then
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$ECHO
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$ECHO "ERROR: $PSEUDO_DIR/$FILE not existent or not readable"
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$ECHO "Aborting"
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exit 1
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fi
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done
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$ECHO " done"
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# how to run executables
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PW_COMMAND="$PARA_PREFIX $BIN_DIR/pw.x $PARA_POSTFIX"
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PH_COMMAND="$PARA_PREFIX $BIN_DIR/ph.x $PARA_POSTFIX"
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D3_COMMAND="$PARA_PREFIX $BIN_DIR/d3.x $PARA_POSTFIX"
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$ECHO
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$ECHO " running pw.x as: $PW_COMMAND"
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$ECHO " running ph.x as: $PH_COMMAND"
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$ECHO " running d3.x as: $D3_COMMAND"
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$ECHO
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# clean TMP_DIR
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$ECHO " cleaning $TMP_DIR...\c"
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rm -rf $TMP_DIR/*
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$ECHO " done"
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# self-consistent calculation
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cat > si.scf.in << EOF
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&control
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calculation = 'scf'
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restart_mode='from_scratch',
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prefix='si',
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tstress = .true.
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tprnfor = .true.
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pseudo_dir = '$PSEUDO_DIR/',
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outdir='$TMP_DIR/'
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/
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&system
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ibrav= 2, celldm(1) =10.20, nat= 2, ntyp= 1,
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ecutwfc =24.0,
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/
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&electrons
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mixing_beta = 0.7
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conv_thr = 1.0d-8
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/
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ATOMIC_SPECIES
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Si 28.086 Si.vbc.UPF
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ATOMIC_POSITIONS
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Si 0.00 0.00 0.00
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Si 0.25 0.25 0.25
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K_POINTS {automatic}
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4 4 4 1 1 1
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EOF
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$ECHO " running the scf calculation for Si...\c"
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$PW_COMMAND < si.scf.in > si.scf.out
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$ECHO " done"
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# calculation of the dynamical matrix at Gamma
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cat > si.phG.in << EOF
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phonons of Si at Gamma
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&inputph
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tr2_ph=1.0d-12,
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prefix='si',
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epsil=.false.,
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trans=.true.,
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zue=.false.,
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amass(1)=28.0855,
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amass(2)=28.0855,
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outdir='$TMP_DIR/',
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fildyn='si.dyn_G',
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fildrho='si.drho_G',
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/
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0.0 0.0 0.0
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EOF
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$ECHO " running the phonon calculation for Si at Gamma...\c"
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$PH_COMMAND < si.phG.in > si.phG.out
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$ECHO " done"
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# calculation of the anharmonic tensor at Gamma
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cat > si.d3G.in << EOF
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Anharm at Gamma
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&inputph
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prefix = 'si',
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fildrho = 'si.drho_G',
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fild0rho = 'si.drho_G',
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amass(1) = 28.0855,
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outdir = '$TMP_DIR/',
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fildyn = 'si.anh_G',
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/
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0.0 0.0 0.0
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EOF
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$ECHO " running the calculation of D3(0,0,0)...\c"
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$D3_COMMAND < si.d3G.in > si.d3G.out
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$ECHO " done"
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# NSCF calculation for the X-point phonon calculation
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cat > si.nscf.in << EOF
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&control
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calculation='phonon',
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restart_mode='from_scratch',
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tstress = .true.
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tprnfor = .true.
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prefix='si',
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pseudo_dir = '$PSEUDO_DIR/',
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outdir='$TMP_DIR/'
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/
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&system
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nosym = .false.,
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ibrav= 2, celldm(1) =10.20, nat= 2, ntyp= 1,
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ecutwfc =24.0
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/
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&electrons
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conv_thr = 1.0d-8
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mixing_beta = 0.7
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/
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&phonon
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xqq(1) = 0.0, xqq(2) = 0.0, xqq(3)= 1.0
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/
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ATOMIC_SPECIES
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Si 28.0855 Si.vbc.UPF
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ATOMIC_POSITIONS
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Si 0.00 0.00 0.00
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Si 0.25 0.25 0.25
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K_POINTS {automatic}
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4 4 4 1 1 1
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EOF
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$ECHO " running the nscf calculation for Si...\c"
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$PW_COMMAND < si.nscf.in > si.nscf.out
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$ECHO " done"
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# calculation of the dynamical matrix at the X-point
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cat > si.phX.in << EOF
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phonons of Si at the X-point
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&inputph
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tr2_ph=1.0d-12,
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prefix='si',
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trans=.true.,
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amass(1)=28.0855,
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amass(2)=28.0855,
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outdir='$TMP_DIR/',
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fildyn='si.dyn_X',
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fildrho='si.drho_X',
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/
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0.0 0.0 1.0
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EOF
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$ECHO " running the phonon calculation for Si at X...\c"
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$PH_COMMAND < si.phX.in > si.phX.out
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$ECHO " done"
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# calculation of the anharmonic tensor at X
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cat > si.d3X.in << EOF
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Anharm at the X-point
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&inputph
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prefix = 'si',
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fildrho = 'si.drho_X',
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fild0rho = 'si.drho_G',
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amass(1) = 28.0855,
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outdir = '$TMP_DIR/',
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fildyn = 'si.anh_X',
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/
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0.0 0.0 1.0
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EOF
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$ECHO " running the calculation of D3(0,X,-X)...\c"
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$D3_COMMAND < si.d3X.in > si.d3X.out
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$ECHO " done"
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$ECHO
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$ECHO "$EXAMPLE_DIR: done"
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