[Users] ET build errors (Leonardo DCGP, CINECA cluster)

Tue Sep 2 12:05:44 CDT 2025

Hello Panayotis,

oh, oops, for CarpetX (which includes Arith) code you actually need
-std=c++17 .

If you are not planning to develop for CarpetX then you can remove all
CarpetX related thorns from your thornlist.

Note that if you have a specific parameter file that you would like to
run, then you can use the MakeThornList helper script to create a
thornlist with just the thorns required for that parameter file,
potentially speeding up compilation quite a bit.

Something like:

./utils/Scripts/MakeThornList --master thornlists/einsteintoolkit.th
--output thornlists/qc0.th par/qc0-mclachlan.par

if you wanted to run qc0-mclachlan.par and had the full thornlist in
thornlists/einsteintoolkit.th (GetComponents will do that for you).

Then pass qc0.th to simfactory using its --thornlist argument (you
likely also need to pass --reconfig to make sure it actually updates
the thornlist it uses).

Yours,
Roland

> [CAUTION: Non-UBC Email]
> 
> Hi Roland,
> 
> I amended my cfg file and added the flag -ffixed-line-length-none ,
> in the Fortran 77 and 90 compiler options:
> 
> 
>   *
> F77FLAGS = -g -march=native -fcray-pointer -ffixed-line-length-none
>   *
> F90FLAGS = -g -march=native -fcray-pointer -ffixed-line-length-none
> 
> This step solved the issue with the complaints about the "Exact"
> thorn.
> 
> 
> The build process continued and stopped at a different point, now
> complaining about the CarpetX/Arith thorn.
> 
> I have attached the new make.log file.
> 
> I ran the log through ChatGPT, and it suggested that this could be
> caused by C++ standard mismatches. Does this sound reasonable to you?
> 
> Currently, the flags for the C and C++ compilers in my config file
> are like this:
> 
>   *
> CFLAGS = -g -march=native -std=gnu99
>   *
> CXXFLAGS = -g -march=native -std=gnu++11
> 
> I checked Bruno's file, and the respective options there are the
> following:
> 
>   *
> CFLAGS = -g -std=gnu99 #-std=c11
>   *
> CXXFLAGS = -g -std=gnu++0x #-std=c++14
> 
> However, I should note that in Bruno's version, all CarpetX-related
> thorns are disabled in the ini file.
> 
> Again, I am not sure I need CarpetX.
> At this point, I am trying to get the build process to work and run
> some examples on the cluster.
> 
> 
> Returning to the compiler options, I suspect that CFLAGS can be left
> alone. Do you have any suggestions on how to change CXXFLAGS to
> bypass the CarpetX/Arith complaints?
> 
> I checked the different C dialect options
> here<https://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html>, and
> it seems that there are a number of possibilities.
> 
> Is there some -std=... option that is new enough for CarpetX and
> old/standard enough so that older C++ code is also OK?
> 
> 
> Best,
> Panayotis
> 
> 
> 
> 
> ________________________________
> From: Roland Haas <rhaas at phas.ubc.ca>
> Sent: Tuesday, September 2, 2025 5:43 PM
> To: IOSIF PANAGIOTIS <PANAGIOTIS.IOSIF at units.it>
> Cc: Einstein Toolkit Users <users at einsteintoolkit.org>
> Subject: Re: [Users] ET build errors (Leonardo DCGP, CINECA cluster)
> 
> Hello Panayotis,
> 
> Oh, I had not noticed, sorry. Hmm, that is the typical cause for these
> issues.
> 
> The only other difference I see is `-ffixed-line-length-none` though
> that would also point to an issue with the Cactus Fortran file
> processing not breaking things into short enough lines.
> 
> Yours,
> Roland
> 
> > [CAUTION: Non-UBC Email]
> >
> > Hi Roland,
> >
> > In the config file I attached, I do have this line included already:
> >
> > FPPFLAGS = -g -traditional
> >
> > Is there anything else I might try?
> >
> > Best,
> > Panayotis
> > ________________________________
> > From: Roland Haas <rhaas at phas.ubc.ca>
> > Sent: Tuesday, September 2, 2025 5:08 PM
> > To: IOSIF PANAGIOTIS <PANAGIOTIS.IOSIF at units.it>
> > Cc: Einstein Toolkit Users <users at einsteintoolkit.org>
> > Subject: Re: [Users] ET build errors (Leonardo DCGP, CINECA cluster)
> >
> > Hello Panayotis,
> >
> > Thanks for including all the output files.
> >
> > In your options list whenever your set FPP you also must also set
> > FPPFLAGS:
> >
> > FPPFLAGS=-traditional
> >
> > See eg generic.cfg or (very new!) Bruno's leonardo-DCGP.cfg file (in
> > simfactory master).
> >
> > Yours,
> > Roland
> >  
> > > [CAUTION: Non-UBC Email]
> > >
> > > Hi Einstein Toolkit users,
> > >
> > > I am reaching out regarding some errors I am encountering during
> > > my attempts to compile ET on the Leonardo, CINECA cluster (DCGP
> > > partition).
> > >
> > > Here are some details on the Leonardo cluster:
> > >
> > >   *
> > > cluster specifics:
> > > https://docs.hpc.cineca.it/hpc/leonardo.html#leonardo-card *
> > > OS: Red Hat Enterprise Linux 8.7
> > >
> > > I attach the 4 configuration files I am using (with many added
> > > comments for guidance and future reference). I adapted them from
> > > the respective config files that Bruno Giacomazzo kindly provided.
> > >
> > > I also attach the make.log output of the command:
> > >
> > > ./simfactory/bin/sim build --verbose --reconfig
> > > --machine=leonardo-dcgp1 --optionlist
> > > simfactory/mdb/optionlists/leonardo-dcgp1.cfg
> > > --allocation=CNHPC_1479290_0 --thornlist
> > > thornlists/einsteintoolkit.th 2>&1 | tee make.log
> > >
> > > From what I understand, the build process complains about syntax
> > > errors in the Exact thorn in these two source files:
> > >
> > >   *
> > > decode_pars.F
> > >   *
> > > Boost_rotation_symmetric.F
> > >
> > > How can I bypass the above problems?
> > >
> > > To be honest, I am not sure that I really need this thorn.
> > > I was simply trying to compile ET using the default thornlist
> > > from a fresh download/installation.
> > >
> > > Is there any other error that the log file is pointing out that I
> > > might be missing?
> > >
> > > Best regards,
> > > Panayotis
> > >
> > >
> > > -------------------
> > > Panagiotis Iosif
> > > postdoctoral researcher
> > > Department of Physics, University of Trieste
> > > Via Alfonso Valerio 2, Trieste 34127
> > > Italy
> > > -------------------
> > >  
> >
> >
> > --
> > My email is as private as my paper mail. I therefore support
> > encrypting and signing email messages. Get my PGP key from
> > http://pgp.mit.edu .  
> 
> 
> --
> My email is as private as my paper mail. I therefore support
> encrypting and signing email messages. Get my PGP key from
> http://pgp.mit.edu .

Yours,
Roland

-- 
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