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
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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 herehttps://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@phas.ubc.ca Sent: Tuesday, September 2, 2025 5:43 PM To: IOSIF PANAGIOTIS PANAGIOTIS.IOSIF@units.it Cc: Einstein Toolkit Users users@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
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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@phas.ubc.ca Sent: Tuesday, September 2, 2025 5:08 PM To: IOSIF PANAGIOTIS PANAGIOTIS.IOSIF@units.it Cc: Einstein Toolkit Users users@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
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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