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Welcome to the TMB/RTMB Users email list!

Before posting, please check the wiki and issuetracker at https://github.com/kaskr/adcomp/. Please try to create a simple repeatable example to go with your question (e.g issues 154, 134, 51).

For questions about glmmTMB, please carefully read https://github.com/glmmTMB/glmmTMB#where-to-ask-questions while considering if you should write to this group or not.

Thanks!

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12/23/25

Normalizing constant / marginal likelihood in TMB?

Hello, Is it possible to use TMB to estimate the normalizing constant (marginal likelihood) for a

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Normalizing constant / marginal likelihood in TMB?

Hello, Is it possible to use TMB to estimate the normalizing constant (marginal likelihood) for a

12/23/25

Jan-Ole Koslik, … Kasper Kristensen8

12/16/25

Numerical problems with complex RTMB model

Jeff, so far the method is only available in RTMB. On Tuesday, December 16, 2025 at 12:47:32 AM UTC+1

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Numerical problems with complex RTMB model

Jeff, so far the method is only available in RTMB. On Tuesday, December 16, 2025 at 12:47:32 AM UTC+1

12/16/25

Abe Solberg, Kasper Kristensen2

12/3/25

Nested Tapes for Efficient Memory Allocation

Your model lacks sparsity because it's not initially formulated as a state space model. It may

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Nested Tapes for Efficient Memory Allocation

Your model lacks sparsity because it's not initially formulated as a state space model. It may

12/3/25

Abe Solberg, Kasper Kristensen3

12/1/25

Segfault with fft on Linux

Cheers. Thank you for the quick response. That fixed it. Thanks again, Abe On Mon, Dec 1, 2025 at 4:

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Segfault with fft on Linux

Cheers. Thank you for the quick response. That fixed it. Thanks again, Abe On Mon, Dec 1, 2025 at 4:

12/1/25

mark...@gmail.com

11/19/25

Error in TransformADFunObject

Thought this might be helpful (and good to get in google searches and AI). It occurs in rTMB if you

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Error in TransformADFunObject

Thought this might be helpful (and good to get in google searches and AI). It occurs in rTMB if you

11/19/25

pthomp...@gmail.com, … Kasper Kristensen7

11/18/25

Non-numeric argument to pgamma(...) in MakeADFun

Thanks all for your comments on this! It works perfectly with the pgamma() call changed to specify

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Non-numeric argument to pgamma(...) in MakeADFun

Thanks all for your comments on this! It works perfectly with the pgamma() call changed to specify

11/18/25

Matt Cheng, … Kasper Kristensen4

10/20/25

R Bomb w/ Large Number of Random Effects

If RTMB is crashing your R session it's an RTMB bug, even if ultimately caused by misuse. A bug

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R Bomb w/ Large Number of Random Effects

If RTMB is crashing your R session it's an RTMB bug, even if ultimately caused by misuse. A bug

10/20/25

9/23/25

Caching in R markdown

Not a super important question, just something I noticed, which made me curious: Having RTMB models

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Caching in R markdown

Not a super important question, just something I noticed, which made me curious: Having RTMB models

9/23/25

Jan-Ole Koslik, Kasper Kristensen4

9/18/25

checkConsistency error

Yes, density accumulation should be in 'topological order' just like you would order a

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checkConsistency error

Yes, density accumulation should be in 'topological order' just like you would order a

9/18/25

James Thorson, Kasper Kristensen2

9/18/25

Inverse subset: order 2 not yet implemented

A temporary fix is to disable this atomic, which is indirectly generated as the log determinant

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Inverse subset: order 2 not yet implemented

A temporary fix is to disable this atomic, which is indirectly generated as the log determinant

9/18/25

Tomas T., … Ben Bolker6

9/10/25

MakeTape throws an error: Error in advector(y) : Invalid argument to 'advector' (lost class attribute?)

Dear Ben, Phillip, all, Ben, thank you very much for the new README! This is awesome, exactly what I

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MakeTape throws an error: Error in advector(y) : Invalid argument to 'advector' (lost class attribute?)

Dear Ben, Phillip, all, Ben, thank you very much for the new README! This is awesome, exactly what I

9/10/25

Tomas T., Kasper Kristensen3

9/10/25

Get only hessian diagonal instead of the whole hessian matrix?

Thanks Kasper! This works perfectly, and it is fast! I was also able to get the 3rd derivative by F$

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Get only hessian diagonal instead of the whole hessian matrix?

Thanks Kasper! This works perfectly, and it is fast! I was also able to get the 3rd derivative by F$

9/10/25

Mollie Brooks, Kasper Kristensen3

8/29/25

oneStepPredict parallel=TRUE

Just to follow up on this. I confirmed that the code wasn't using all 20 cores that I requested

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oneStepPredict parallel=TRUE

Just to follow up on this. I confirmed that the code wasn't using all 20 cores that I requested

8/29/25

Rishika Chopara, Mollie Brooks5

8/18/25

Fitting SCR models using RTMB

PS Since your problem has a matrix in the data, here's a version with that. indx1 = 1:500 dat1 =

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Fitting SCR models using RTMB

PS Since your problem has a matrix in the data, here's a version with that. indx1 = 1:500 dat1 =

8/18/25

Paul vdb, Kasper Kristensen3

8/15/25

Efficient data updates for EM algorithm

That's neat. I wouldn't have thought of that with my head stuck in MakeADFun. The nested

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Efficient data updates for EM algorithm

That's neat. I wouldn't have thought of that with my head stuck in MakeADFun. The nested

8/15/25

Jan-Ole Koslik, … Phillip Vetter7

8/9/25

B-spline derivatives

Just to answer my own question: Yes it is. https://github.com/kaskr/RTMB/blob/

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B-spline derivatives

Just to answer my own question: Yes it is. https://github.com/kaskr/RTMB/blob/

8/9/25

Richard Chandler, Kasper Kristensen3

8/7/25

dpois(0,0,true) returns NaN

Thanks, I'll test that out. The dpois2 hack seems to work fine as well. On Wednesday, August 6,

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dpois(0,0,true) returns NaN

Thanks, I'll test that out. The dpois2 hack seems to work fine as well. On Wednesday, August 6,

8/7/25

Jan-Ole Koslik, Kasper Kristensen5

8/5/25

Memory spike with RTMB

Actually, the sapply() part is wrong, same memory requirements. I was mislead here. Jan-Ole Koslik

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Memory spike with RTMB

Actually, the sapply() part is wrong, same memory requirements. I was mislead here. Jan-Ole Koslik

8/5/25

Jan-Ole Koslik, Kasper Kristensen5

8/1/25

Yes, I'm doing that at the moment but it leads to some other problems :/ kasper.k...@gmail.com

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Yes, I'm doing that at the moment but it leads to some other problems :/ kasper.k...@gmail.com

8/1/25

KUNASEKARAN NIRMALKANNA, Kasper Kristensen2

7/28/25

AD to numeric in RTMB

Reported objects should never be AD. Quoting from ?advector: An 'advector' is a class used

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AD to numeric in RTMB

Reported objects should never be AD. Quoting from ?advector: An 'advector' is a class used

7/28/25

Jan-Ole Koslik, Kasper Kristensen3

7/28/25

Sparsity loss with matrix-vector multiplication

The 'RTMB-advanced' vignette has a bit of information on this - see section 'Tape

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Sparsity loss with matrix-vector multiplication

The 'RTMB-advanced' vignette has a bit of information on this - see section 'Tape

7/28/25

Paul vdb, Kasper Kristensen2

6/26/25

expAv undeflow/overflow tricks

It's a problem in RTMB that needs to be fixed. I've opened a github issue. On Thursday, June

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expAv undeflow/overflow tricks

It's a problem in RTMB that needs to be fixed. I've opened a github issue. On Thursday, June

6/26/25

Timothée Flutre, … Kasper Kristensen6

6/25/25

error returned by MakeADFun to fit LMM with correlated random effects and errors

Thank you! I will follow this direction (after updating my system because for me "p triplets

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error returned by MakeADFun to fit LMM with correlated random effects and errors

Thank you! I will follow this direction (after updating my system because for me "p triplets

6/25/25

Jan-Ole Koslik, … Kasper Kristensen3

6/25/25

Printing of "Retaping: Nold=... Nnew=..." when using expAv()

Also note that this output can be disabled using the `trace` argument - see ?expAv. On Tuesday, June

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Printing of "Retaping: Nold=... Nnew=..." when using expAv()

Also note that this output can be disabled using the `trace` argument - see ?expAv. On Tuesday, June

6/25/25

Jan-Ole Koslik, Kasper Kristensen4

6/24/25

Filling sparse matrices

Thanks! kasper.k...@gmail.com schrieb am Mittwoch, 18. Juni 2025 um 10:23:01 UTC+2: I think this

unread,

Filling sparse matrices

Thanks! kasper.k...@gmail.com schrieb am Mittwoch, 18. Juni 2025 um 10:23:01 UTC+2: I think this

6/24/25

houessou madjid

6/16/25

Log Gaussian Cox Process in TMB

Hi all, I am trying to implement the LGCP in TMB in which i approximate the gaussian random field by

unread,

Log Gaussian Cox Process in TMB

Hi all, I am trying to implement the LGCP in TMB in which i approximate the gaussian random field by

6/16/25

Jan-Ole Koslik, Kasper Kristensen2

6/13/25

Problems with eigen()

It's because `eigen(.,symmetric=FALSE)` gives a complex factorization - perhaps you want

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Problems with eigen()

It's because `eigen(.,symmetric=FALSE)` gives a complex factorization - perhaps you want

6/13/25

Jan-Ole Koslik, … Kasper Kristensen5

6/13/25

logspace add RTMB

Thanks to both of you! kasper.k...@gmail.com schrieb am Freitag, 6. Juni 2025 um 10:00:43 UTC+2: Ben,

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logspace add RTMB

Thanks to both of you! kasper.k...@gmail.com schrieb am Freitag, 6. Juni 2025 um 10:00:43 UTC+2: Ben,

6/13/25

houessou madjid

6/12/25

How to implement the Log Gaussian Cox Process in TMB

Hi all, I am trying to implement the LGCP in TMB in which i approximate the gaussian random field by

unread,

How to implement the Log Gaussian Cox Process in TMB

Hi all, I am trying to implement the LGCP in TMB in which i approximate the gaussian random field by

6/12/25

Ben Bolker, … Kasper Kristensen4

6/4/25

TMBad vs cppAD documentation?

Thanks, Kasper. All my "TMBad vs CppAD" searching had failed to find this, it's very

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TMBad vs cppAD documentation?

Thanks, Kasper. All my "TMBad vs CppAD" searching had failed to find this, it's very

6/4/25

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