Dedalus Users

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Welcome to dedalus-users, a list for general help, questions, and discussions about Dedalus.

Please take a look at the User Guide for answers to common questions and basic troubleshooting.

If you are new here, welcome! Please be patient while your first message is moderated to reduce spam.

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Stefan Llewellyn Smith, Keaton Burns5

Dec 9

dedalus3 new install problems macOS Sequoia Intel

That now runs mpi programs, although they don't terminate properly (eg for rayleigh-benard the

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dedalus3 new install problems macOS Sequoia Intel

That now runs mpi programs, although they don't terminate properly (eg for rayleigh-benard the

Dec 9

qucchia, Daniel Lecoanet2

Dec 7

Help with tau constraints

Hi, You need to write your equations in a way such that the diffusion term is linear and on the LHS

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Help with tau constraints

Hi, You need to write your equations in a way such that the diffusion term is linear and on the LHS

Dec 7

Ryan Kelly, Keaton Burns3

Dec 6

Unable to parallelize with high core count

Thanks for pointing that out, I missed seeing that was the root cause. Turns out all I needed to do

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Unable to parallelize with high core count

Thanks for pointing that out, I missed seeing that was the root cause. Turns out all I needed to do

Dec 6

Adasfs Dsdade, … Keaton Burns4

Dec 6

Possibly an extremely basic question about implementing the 2D vorticity evolution for the incompressive Navier-Stokes

Hello, This system is still not well posed for multiple reasons. Adding a constant to u will not

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Possibly an extremely basic question about implementing the 2D vorticity evolution for the incompressive Navier-Stokes

Hello, This system is still not well posed for multiple reasons. Adding a constant to u will not

Dec 6

Vhaskar Chakraborty, Jeffrey S. Oishi3

Dec 5

About Integration in Dedalus, and tau fields

Thank you sir, it helped me a lot, I did get an average of as you said , and I read about that in the

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About Integration in Dedalus, and tau fields

Thank you sir, it helped me a lot, I did get an average of as you said , and I read about that in the

Dec 5

yopo...@gmail.com, Daniel Lecoanet4

Dec 4

Compound bases in Dedalus 3?

Hi Yi-Min, I've attached one of my scripts that does this. Daniel On Nov 19, 2024, at 6:20 PM,

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Compound bases in Dedalus 3?

Hi Yi-Min, I've attached one of my scripts that does this. Daniel On Nov 19, 2024, at 6:20 PM,

Dec 4

Lois B.griffin3

Dec 4

Re: Kuwait - سايتوتك في الكويت - سايتوتك للاجهاض الشهر الاول - 00971553031846

أسعار حبوب سايتوتك وأماكن توفرها في دول مثل الكويت والإمارات وعمان ومصر. يمكنك الاتصال على الرقم

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Re: Kuwait - سايتوتك في الكويت - سايتوتك للاجهاض الشهر الاول - 00971553031846

أسعار حبوب سايتوتك وأماكن توفرها في دول مثل الكويت والإمارات وعمان ومصر. يمكنك الاتصال على الرقم

Dec 4

Nancy

Dec 4

Two layer flow stability

Hello everyone, Does anyone have a Dedalus example or tutorial for solving the stability of two-layer

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Two layer flow stability

Hello everyone, Does anyone have a Dedalus example or tutorial for solving the stability of two-layer

Dec 4

Daniel Vaughan, thierry Alboussiere3

Nov 30

Compressible Navier Stokes

Hi Thierry, Thank you for the response and the suggestion. I'll take a look at the repo included.

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Compressible Navier Stokes

Hi Thierry, Thank you for the response and the suggestion. I'll take a look at the repo included.

Nov 30

MARTÍN IGNACIO RUBIO

Nov 23

Convergence Issues in Convolution Integral

Hi, I am working on an integral in a non-local function within an equation for a real field "u

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Convergence Issues in Convolution Integral

Hi, I am working on an integral in a non-local function within an equation for a real field "u

Nov 23

Christopher Li, Ben Brown2

Nov 21

Issue with EVP ("Objects are not all equal.")

Chistopher, You need to set dtype = np.complex128 rather than dtype = np.float64. You can see

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Issue with EVP ("Objects are not all equal.")

Chistopher, You need to set dtype = np.complex128 rather than dtype = np.float64. You can see

Nov 21

Sofiane Alla, Keaton Burns2

Nov 20

Orszag Tang Vortex in Dedalus 3

Hi Sofiane, Please take a look at the tutorial notebooks here. They cover issues like setting up

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Orszag Tang Vortex in Dedalus 3

Hi Sofiane, Please take a look at the tutorial notebooks here. They cover issues like setting up

Nov 20

MARTÍN IGNACIO RUBIO, … Keaton Burns4

Nov 20

Issue with Implementing ∂x + i ∂y in Spherical Coordinates on Sphere Surface

Hi Galen and Keaton, Thanks a lot for your reply. It has been very helpful. Best, Martín El lun, 18

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Issue with Implementing ∂x + i ∂y in Spherical Coordinates on Sphere Surface

Hi Galen and Keaton, Thanks a lot for your reply. It has been very helpful. Best, Martín El lun, 18

Nov 20

Guangyuan Wei, Keaton Burns3

Nov 19

the problem of radial

Dear developer, Thank you for your reply. I tried this a few days ago and the result was not

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the problem of radial

Dear developer, Thank you for your reply. I tried this a few days ago and the result was not

Nov 19

Yi-De Liou, Keaton Burns4

Nov 19

apply boundary conditions using a uniform grid

If you're equations and boundary conditions satisfy a parity/reflection symmetry at the

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apply boundary conditions using a uniform grid

If you're equations and boundary conditions satisfy a parity/reflection symmetry at the

Nov 19

Keaton Burns

Nov 18

Re: Issues with implementing Orszag Tang Vortex with v3

Hello, As the error says, you must supply a scale argument to the basis.local_grid method. However

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Re: Issues with implementing Orszag Tang Vortex with v3

Hello, As the error says, you must supply a scale argument to the basis.local_grid method. However

Nov 18

Guan-Lin Wu, Keaton Burns2

Nov 18

Try to check the validity of the solution

Hello, When you evaluate a Dedalus expression, you get back a field object storing the result. If you

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Try to check the validity of the solution

Hello, When you evaluate a Dedalus expression, you get back a field object storing the result. If you

Nov 18

Galen Neil Wilcox

Nov 14

Cannot turn rotating convection example into an IVP

Hello everyone, I have encountered another example where meridional NCCs cause problems for IVPs.

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Cannot turn rotating convection example into an IVP

Hello everyone, I have encountered another example where meridional NCCs cause problems for IVPs.

Nov 14

Pierre-Yves Goffin, Keaton Burns7

Nov 14

Ill-posed problem

Hi Keaton, Thank you very much, it worked ! In the meantime I had tried doing that with the

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Ill-posed problem

Hi Keaton, Thank you very much, it worked ! In the meantime I had tried doing that with the

Nov 14

Thomas Baumann, Daniel Vaughan2

Nov 13

High-order Runge-Kutta methods

Hi, I have found: "Implicit-Explicit Runge-Kutta schemes for stiff systems of differential

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High-order Runge-Kutta methods

Hi, I have found: "Implicit-Explicit Runge-Kutta schemes for stiff systems of differential

Nov 13

leo mangalath

Nov 12

Streamfunction

Hi all, I have a few questions about calculating the streamfunction in dedalus. I noticed that every

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Streamfunction

Hi all, I have a few questions about calculating the streamfunction in dedalus. I noticed that every

Nov 12

Peter Rau

Nov 4

Cartesian coordinates version of SphericalEllProduct operator

Hi all, I am working on an MHD problem in 3D that is periodic in the x and y directions. I'm thus

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Cartesian coordinates version of SphericalEllProduct operator

Hi all, I am working on an MHD problem in 3D that is periodic in the x and y directions. I'm thus

Nov 4

Abishek Sarkar, … Miguel Beneitez5

Oct 29

Switching a coefficient of term in the governing equations from 1 to 0 after some certain time

Dear all, Thank you so much for all your kind suggestions. I have looked upon the suggestion by

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Switching a coefficient of term in the governing equations from 1 to 0 after some certain time

Dear all, Thank you so much for all your kind suggestions. I have looked upon the suggestion by

Oct 29

Liam Oconnor3

Oct 28

problem with installation on Anvil compute system

Hi again, Guangzhen Jin at ACCESS support gave the following recommendation to fix the fatal error I

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problem with installation on Anvil compute system

Hi again, Guangzhen Jin at ACCESS support gave the following recommendation to fix the fatal error I

Oct 28

S W

Oct 28

Q: Boundary condition for a single slit experiment

Does anyone know how to set up the boundary condition for a single slit? In detail, we have two

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Q: Boundary condition for a single slit experiment

Does anyone know how to set up the boundary condition for a single slit? In detail, we have two

Oct 28

nathan magnan, Jeffrey S. Oishi5

Oct 28

How to mitigate ringing?

Hi Nathan, Another issue is boundary conditions. You also need enough space in your domain for erf to

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How to mitigate ringing?

Hi Nathan, Another issue is boundary conditions. You also need enough space in your domain for erf to

Oct 28

Kevin Modica, … Daniel Lecoanet4

Oct 27

How to determine memory needed / any work arounds?

Hi Kevin, As Calum alluded to, the size of your matrix is not 4096x64. It's NxN, where N=4096*64*

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How to determine memory needed / any work arounds?

Hi Kevin, As Calum alluded to, the size of your matrix is not 4096x64. It's NxN, where N=4096*64*

Oct 27

Kevin Modica, … Yves Dubief7

Oct 27

Does Dedalus only run on 1-core?

Here is my procedure (for d3). The key is to compile mpi4py with the slurm-compiled mpi library for

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Does Dedalus only run on 1-core?

Here is my procedure (for d3). The key is to compile mpi4py with the slurm-compiled mpi library for

Oct 27

Miguel Beneitez, Daniel Lecoanet3

Oct 25

Trace of the gradient of a tensor issues

I realise that I've answered this very late but just wanted to thank you for fixing this and all

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Trace of the gradient of a tensor issues

I realise that I've answered this very late but just wanted to thank you for fixing this and all

Oct 25

Andrew Cook

Oct 23

Tau Method

Hi all, I recently started trying to replicate results of a paper using Dedalus. To do this, I have

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Tau Method

Hi all, I recently started trying to replicate results of a paper using Dedalus. To do this, I have

Oct 23