On 20 Apr 2020, at 15:38, Rishank Diwan <rishank2610@gmail.com> wrote:

Dear Sir/Madam

I am trying to compile a Cactus executable on my laptop, which has an

ubuntu-based operating system(Ubuntu 18.04). I am using the latest version i.e; ET_2019_10. I am using simfactory and following the Simulation Factory Advanced Tutorial.

Hi Rishank,

Are you referring to this?

https://docs.einsteintoolkit.org/et-docs/Simulation_Factory_Advanced_Tutorial

This was last updated in 2018; it might have been superseded by the Jupyter tutorials described at https://einsteintoolkit.org/documentation/new-user-tutorial.html. Roland, can you confirm?

For building, I am using generic configuration files which are also the default files.

Here are the steps I am using:

simfactory/bin/sim setup

./simfactory/bin/sim build -j2 --thornlist ../einsteintoolkit.th

Compilation produces an executable, but when I go for running the

example file using the command,

exe/cactus_sim

I get the following error.

""

Fatal error in PMPI_Comm_rank: Invalid communicator, error stack:

PMPI_Comm_rank(110): MPI_Comm_rank(comm=0x8202540, rank=0x7ffcee11d818)

failed

PMPI_Comm_rank(68).: Invalid communicator

[unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=805918213

:

system msg for write_line failure : Bad file descriptor

""

I am not able to find any relevant solution on the internet. Can you

please help me find in the solution.

Can you try running the executable via simfactory, as per the tutorial section "Running a simulation" (https://docs.einsteintoolkit.org/et-docs/Simulation_Factory_Advanced_Tutorial#Running_a_Simulation)?