Nachiket Gokhale

I have been reading your paper "[Physics-Informed Neural Operator for Learning Partial Differential Equations](https://arxiv.org/pdf/2111.03794.pdf)". It seems that in equations (14) and (15) in your paper, in which you compute the...

In https://www.librom.net/features.html In Step 4 for DMD you say $$ \tilde{A}_r X = \Lambda X $$ Shouldn't it be $$ \tilde{A}_r X = X \Lambda $$

I'm trying to install following the instruction [here](https://github.com/LLNL/libROM/issues/173#issuecomment-1378388991). I am getting the following message ``` CMake Error at /home/h206100a/cmake-3.26.4-linux-x86_64/share/cmake-3.26/Modules/FindPackageHandleStandardArgs.cmake:230 (message): Could NOT find ScaLAPACK (missing: ScaLAPACK_LIBRARY) Call Stack (most recent...

reading a numpy matrix in libROM/mfem

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Is there an easy way to read a numpy matrix into libROM or MFEM? Thanks, Nachiket

dmd prediction of initial condition

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My DMD code seems to be working, but it seems to make a large error at the starting time. Shouldn't DMD be able to reproduce the initial condition exactly? Looking...

python interface

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Am I correct in assuming that libROM does not have a Python interface? EDIT: Can our Full Order Model be in Python? Thanks, -Nachiket

Integrator for non-linear term

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I'm trying to build a FOM for the non-linear heat conduction equation i.e. heat conduction equation in which the conductivity K depends on temperature. i.e. K = k0 + \alpha...

version of ComputeCtAB not involving HypreParMatrix

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Is there a version of ComputeCtAB in which A is a serial matrix, perhaps just a mfem matrix? I'm asking this because, if such a routine were available, I would...

understanding hyper-reduction in libROM

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I've been going through https://github.com/LLNL/libROM/blob/master/examples/prom/poisson_global_rom.cpp and it seems understandable. I want to extend it by implementing hyper-reduction. With that in mind I'm looking at the two hyper-reduction examples https://github.com/LLNL/libROM/blob/master/examples/prom/nonlinear_elasticity_global_rom.cpp https://github.com/LLNL/libROM/blob/master/examples/prom/mixed_nonlinear_diffusion.cpp...

code documentation

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Is the code documentation at https://software.llnl.gov/libROM/html/index.html a little behind the current version of libROM? For instance I cannot seem to find: "SampleMeshManager" in the documentation. Nachiket