[Wien] [SPAM?] Re: Getting "Segmentation fault / execvp" error when running WIEN2k_23.2 in parallel

[Laurence Marks]

I am 99% certain it is not a problem with how Wien2k launches mpi.

For certain your .machines file is dubious, the lines should be:
lapw0:c305-005:1
1:c305-005:1

Or

lapw0:c305-005:1 c305-005:1
1:c305-005:1 c305-005:1

Not entries twice, and one without the ":". (N.B. for Peter, there is a bug
if one has nodeX:4 nodeY without the ":" in the second case, I found this a
couple of days ago. The reverse may also fail.)

If this is not it, then I suspect it is something in how you are launching
mpi, whether you have different compilations (e.g. mpif90 or gcc/gfortran
mixed with ifort/mkl) or similar. Unfortunately there are a LOT of entries
in a google search:

https://www.google.com/search?q=Segmentation+fault%3A+invalid+permissions+for+mapped+object&rlz=1C1RXQR_enUS997US997&sourceid=chrome&ie=UTF-8

What compilers/options were used for fftw3, Wien2k & what mkl/scalapack
libraries & bindings?

N.B., I have not used tacc for some years, but someone else on the list
might have.

On Thu, Mar 23, 2023 at 1:14 PM Brian Lee <brianhlee at utexas.edu> wrote:

> Hello WIEN2k users/developers,
>
> I am a graduate student at UT Austin in the MS&E program and would like to
> test
>
> WIEN2k_23.2 using various parallelization schemes. When I try to run
> “run_lapw -p” with the default MPI run command suggested during siteconfig
> along with a .machines file/job script that requests 2 processors per lapw0
> and/or 2 processors per kpt, I receive the following error:
>
> [c302-005:191113:0:191113] Caught signal 11 (Segmentation fault: invalid
> permissions for mapped object at address 0x14a9ed892798)
>
> [c302-005:191112:0:191112] Caught signal 11 (Segmentation fault: invalid
> permissions for mapped object at address 0x145a05e75798)
>
> ==== backtrace (tid: 191113) ====
>
>  0 0x0000000000012ce0 __funlockfile()  :0
>
>  1 0x000000000033c798 ???()
> /scratch/tacc/apps/intel19/impi19_0/fftw3/3.3.10/lib/libfftw3.so.3:0
>
> =================================
>
-- 
Professor Laurence Marks
Department of Materials Science and Engineering
Northwestern University
https://scholar.google.com/citations?user=zmHhI9gAAAAJ&hl=en
<http://www.numis.northwestern.edu>
"Research is to see what everybody else has seen, and to think what nobody
else has thought", Albert Szent-Györgyi
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