On Wed, 13 Jan 2021, Jan Grießer via petsc-users wrote:

> Hello all,
> I have a question about the tests for PETSc/PETSc4Py and SLEPc4Py when these 
> libraries are compiled inside a Singularity container (The .def file for 
> compilation is attached). The compilation of the libraries is no problem, 
> only if you call "make all check" for PETSc and "make check" for SLEPC at the 
> end of the compilation, error messages appear for PETSc or the Singularity 
> build aborts for SLEPc (see output.txt). I guess the problems are only 
> related to the "sudo" rights, which are needed to build the containers.

ooks like the container build [and the test] is done as root.

and OpenMPI suggests:

>>>
You can override this protection by adding the --allow-run-as-root option
to the cmd line or by setting two environment variables in the following way:
the variable OMPI_ALLOW_RUN_AS_ROOT=1 to indicate the desire to override this
protection, and OMPI_ALLOW_RUN_AS_ROOT_CONFIRM=1 to confirm the choice and
add one more layer of certainty that you want to do so.
We reiterate our advice against doing so - please proceed at your own risk.
<<<<

So perhaps there is a way to do this whole process as a regular user [and not 
root?] - or set the above 2 env variables?

> With slepc I don't even have access to the makelog because the container 
> can't be built at all.

I'm not sure what you mean here - and why the make.log would exist in a regular 
build - and not in a container build.

> For the 4Py versions I could navigate via singularity shell into the 
> corresponding directories and execute the runtests. These returned an ok for 
> all tests.
> Is there a clever way to start tests for the c-Versions of PETSc/SLEPc 
> afterwards to check for the correct build of the Libaries? Using the 
> singularity shell to navigate into petsc and using gmakefile test throws an 
> „Read-only file system“ error, as expected. 
> 

Hm - you should be able to copy a petsc example, corresponding makefile to a 
read/write location, and compile/run it.

Satish

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