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Ioachim Dusa
5:27 AM
Python ase-CP2K communication stalls
Dear cp2k community, happy new year! I am having trouble with the calculator implementation of cp2k
unread,
Python ase-CP2K communication stalls
Dear cp2k community, happy new year! I am having trouble with the calculator implementation of cp2k
5:27 AM
yis...@163.com
12/30/25
Issue with EPS_DEFAULT Sensitivity: Why Does 1.0E-12 Cause CPASSERT Failure?
Dear CP2K developers, I would like to report a potential issue regarding the keyword EPS_DEFAULT.
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Issue with EPS_DEFAULT Sensitivity: Why Does 1.0E-12 Cause CPASSERT Failure?
Dear CP2K developers, I would like to report a potential issue regarding the keyword EPS_DEFAULT.
12/30/25
D Y
,
sedate
2
12/30/25
How to correctly set the function in EXTERNAL_POTENTIAL?
Hello, it is ok for seting a potential to prevent molecules motion during AIMD simulations? I get the
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How to correctly set the function in EXTERNAL_POTENTIAL?
Hello, it is ok for seting a potential to prevent molecules motion during AIMD simulations? I get the
12/30/25
Torstein Fjermestad
, …
Jürg Hutter
4
12/29/25
Wavelet Poisson solver - Huge change in total energy when increasing the plane-wave cut-off energy from 1200 to 1260 Ry
Hi yes, I can reproduce your problem using a small molecule in a 30x30x30 box with cutoffs 1200 and
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Wavelet Poisson solver - Huge change in total energy when increasing the plane-wave cut-off energy from 1200 to 1260 Ry
Hi yes, I can reproduce your problem using a small molecule in a 30x30x30 box with cutoffs 1200 and
12/29/25
Michele Loriso
12/26/25
Cp2k installation advice
Good afternoon, Our research group recently acquired an Asus RS720-E12 server, featuring 2 x Intel
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Cp2k installation advice
Good afternoon, Our research group recently acquired an Asus RS720-E12 server, featuring 2 x Intel
12/26/25
zc_belief
12/24/25
How to set walls for coordination or restrict molecule motion
Dear All: I'm using MTD to simulate the dissociation reaction of organic molecules on TiO2-
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How to set walls for coordination or restrict molecule motion
Dear All: I'm using MTD to simulate the dissociation reaction of organic molecules on TiO2-
12/24/25
Reuti Reuti
2
12/23/25
No more Makefile to compile after building the toolchain?
It turned out, that I have to download v2025.2 instead of the master branch. -- Reuti Reuti Reuti
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No more Makefile to compile after building the toolchain?
It turned out, that I have to download v2025.2 instead of the master branch. -- Reuti Reuti Reuti
12/23/25
Andreas Döll
,
Frederick Stein
2
12/19/25
Geometric optimization -> Single point energy calc: Changing basis and reading in coordinates
Dear Andreas, It should definitely work to setup some bash script (run the geometry optimization,
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Geometric optimization -> Single point energy calc: Changing basis and reading in coordinates
Dear Andreas, It should definitely work to setup some bash script (run the geometry optimization,
12/19/25
Satchith PS
,
Frederick Stein
2
12/18/25
Help Required For Simulating Simple H20 Molecule Using Quickstep.
Dear Satchith, I guess the culprit is the COORD-section. Remove it and use &TOPOLOGY
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Help Required For Simulating Simple H20 Molecule Using Quickstep.
Dear Satchith, I guess the culprit is the COORD-section. Remove it and use &TOPOLOGY
12/18/25
Ioachim Dusa
, …
Johann Pototschnig
4
12/11/25
Tabulated external force potential
It is possible to give an external field via cube file or function: https://manual.cp2k.org/trunk/
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Tabulated external force potential
It is possible to give an external field via cube file or function: https://manual.cp2k.org/trunk/
12/11/25
Ho Chang Song
12/9/25
Minima hopping issue
Hello CP2K community, I'm using CP2K together with a minima-hopping (MH) workflow to search for
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Minima hopping issue
Hello CP2K community, I'm using CP2K together with a minima-hopping (MH) workflow to search for
12/9/25
oandr...@gmail.com
,
Jürg Hutter
2
12/8/25
Transition Density from TDDFT
Hi currently available are the printing of excitation orbitals or NTO's. The transition density
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Transition Density from TDDFT
Hi currently available are the printing of excitation orbitals or NTO's. The transition density
12/8/25
Ari Paavo Seitsonen (apsi)
12/2/25
CECAM+Psi-k School "Hybrid Quantum Mechanics / Molecular Mechanics (QM/MM) Approaches to Biochemistry and Beyond", Lausanne, March 23rd to 27th, 2026
Dear Colleagues, We are pleased to announce the seventh CECAM and Psi-k School "Hybrid Quantum
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CECAM+Psi-k School "Hybrid Quantum Mechanics / Molecular Mechanics (QM/MM) Approaches to Biochemistry and Beyond", Lausanne, March 23rd to 27th, 2026
Dear Colleagues, We are pleased to announce the seventh CECAM and Psi-k School "Hybrid Quantum
12/2/25
Richard李
,
Krack, Matthias
2
12/1/25
Questions on small differences in density matrices and Mulliken populations from CP2K single-point calculation
Hi In a first step, I suggest performing test and comparison again using a much tighter SCF
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Questions on small differences in density matrices and Mulliken populations from CP2K single-point calculation
Hi In a first step, I suggest performing test and comparison again using a much tighter SCF
12/1/25
yis...@163.com
, …
Johann Pototschnig
4
11/30/25
Inquiry about SCF Convergence Issues with the Diagonalization Method in CP2K
Thank you very much 在2025年10月28日星期二 UTC+8 21:28:01<Johann Pototschnig> 写道: You can try to
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Inquiry about SCF Convergence Issues with the Diagonalization Method in CP2K
Thank you very much 在2025年10月28日星期二 UTC+8 21:28:01<Johann Pototschnig> 写道: You can try to
11/30/25
Cao Yang
11/29/25
Problems about VIBRATIONAL_ANALYSIS
Dear CP2K community, I am encountering an issue when using CP2K 2025 to perform VIBRATIONAL_ANALYSIS.
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Problems about VIBRATIONAL_ANALYSIS
Dear CP2K community, I am encountering an issue when using CP2K 2025 to perform VIBRATIONAL_ANALYSIS.
11/29/25
Dat Ho
11/28/25
Cell OPT stops right before the second step of SCF
I'm trying to run a cell optimisation simulation of a crystal but it stops every time at the
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Cell OPT stops right before the second step of SCF
I'm trying to run a cell optimisation simulation of a crystal but it stops every time at the
11/28/25
Aishwarya Sudhama
11/27/25
CP2K on LUMI-G GPU
Dear CP2K community, I am interested to run CP2K using GPU support on LUMI-G HPC. I encounter a
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CP2K on LUMI-G GPU
Dear CP2K community, I am interested to run CP2K using GPU support on LUMI-G HPC. I encounter a
11/27/25
Darek -
,
Marcella Iannuzzi
4
11/23/25
input files for geomtery optimization + normal mode calculations, DFT/B3LYP/6-31G(d,p))
Hi Derek - The default options in GEO_OPT are in general good enough - Any wfn optimisation method is
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input files for geomtery optimization + normal mode calculations, DFT/B3LYP/6-31G(d,p))
Hi Derek - The default options in GEO_OPT are in general good enough - Any wfn optimisation method is
11/23/25
Soma
,
Krack, Matthias
3
11/21/25
Regarding Warnings under PBC Conditions with SCCS
Dear Matthias, Thank you for your reply. I will try to remove STRESS_TENSOR analytical and use
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Regarding Warnings under PBC Conditions with SCCS
Dear Matthias, Thank you for your reply. I will try to remove STRESS_TENSOR analytical and use
11/21/25
sun
,
Marcella Iannuzzi
3
11/21/25
Issues with MO warnings and Cholesky decomposition failure in CP2K with def2-TZVP
Dear Marcella (and CP2K developers), Thank you very much for your detailed and helpful reply. I
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Issues with MO warnings and Cholesky decomposition failure in CP2K with def2-TZVP
Dear Marcella (and CP2K developers), Thank you very much for your detailed and helpful reply. I
11/21/25
qing zhou
, …
Augustin Bussy
5
11/20/25
XAS calculation of an open-shell system
Dear Augustin, Thank you for your suggestions. I will try a different function to continue the
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XAS calculation of an open-shell system
Dear Augustin, Thank you for your suggestions. I will try a different function to continue the
11/20/25
Junbo Lu
,
Krack, Matthias
2
11/19/25
How to print the kinetic energy AO matrix?
Hi Junbo KINETIC_ENERGY is an input keyword, not an input section. Best Matthias From: cp2k@
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How to print the kinetic energy AO matrix?
Hi Junbo KINETIC_ENERGY is an input keyword, not an input section. Best Matthias From: cp2k@
11/19/25
Ziming Wang
11/19/25
How to solve “Cholesky decomposition failed. Matrix ill conditioned?”
Dear cp2k developers, When I used HSE06 with opening RI-HFX to calculate the 2D GaN band structure, I
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How to solve “Cholesky decomposition failed. Matrix ill conditioned?”
Dear cp2k developers, When I used HSE06 with opening RI-HFX to calculate the 2D GaN band structure, I
11/19/25
ice ZQing
11/18/25
Why doesn't the force eventually tend to zero when using CP2K for Slow-growth simulation
Hello everyone, I am currently learning how to perform slow-growth simulations in CP2K to obtain free
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Why doesn't the force eventually tend to zero when using CP2K for Slow-growth simulation
Hello everyone, I am currently learning how to perform slow-growth simulations in CP2K to obtain free
11/18/25
T deJ
,
Jürg Hutter
3
11/18/25
Crash for TDDFT with RKS_TRIPLETS and ADMM
Dear Jürg, Thank you for your swift reply! The LIBXC variant indeed works. Best, Tjeerd On Thursday,
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Crash for TDDFT with RKS_TRIPLETS and ADMM
Dear Jürg, Thank you for your swift reply! The LIBXC variant indeed works. Best, Tjeerd On Thursday,
11/18/25
hamid zabihi
, …
Frederick Stein
3
11/18/25
SCF Convergence Issues in CP2K – Oscillating Energy Behavior
Smearing is not compatible with OT. Considering your output, you do not need to turn off the CHOLESKY
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SCF Convergence Issues in CP2K – Oscillating Energy Behavior
Smearing is not compatible with OT. Considering your output, you do not need to turn off the CHOLESKY
11/18/25
hamid zabihi
,
Marcella Iannuzzi
2
11/16/25
SCF not converging in CaF₂ slab geometry optimisation — advice needed
Hi The convergence is slow but not too bad Increasing the number of MAX_SCF should help. It is not a
unread,
SCF not converging in CaF₂ slab geometry optimisation — advice needed
Hi The convergence is slow but not too bad Increasing the number of MAX_SCF should help. It is not a
11/16/25
Michael LaCount
,
Dmitry Ryndyk
5
11/15/25
Reproducing NEGF results
Hi Michael, I aim to develop the code further. But first, I check and clean the old one. The changes
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Reproducing NEGF results
Hi Michael, I aim to develop the code further. But first, I check and clean the old one. The changes
11/15/25
Elham M.Goliaei
11/11/25
SCPC method?
Dear CP2K users and developers, I am currently working on 2D slab systems with both positive (+1) and
unread,
SCPC method?
Dear CP2K users and developers, I am currently working on 2D slab systems with both positive (+1) and
11/11/25