[Wien] SOLVED - OMP Error in combination with ELPA during compilation with ifx version higher than 2025.1

[Michael Fechtelkord]

Dear colleagues,


end of last year I pointed out an issue for OPEN MP concerning versions 
of ifx 2025.2 and higher. It seems Intel has changed the OMP library and 
that concerns ELPA (currently version 2025.06.002). While compilation 
and check of ELPA works with either version of ifx .. the compilation of 
WIEN2k (seclr4_tmp_.F) leads to the errors shown below. Compiling ELPA 
with ifx and OMP 2025.1 and further compilation of WIEN2k with ifx 
2025.3 does not give any error.

Errors are listed below.


The problem is due to the omp_lib.mod  file in the directory 
/opt/intel/oneapi/compiler/2025.3/opt/compiler/include/intel64. The 
Module file has changed with version 2025.2 and higher and causes the 
errors below.




I made a copy of the file and substituted it by the 2025.1 version. That 
is all. Then all runs fine, and you can compile all with ifx 2025.3


No idea if it is a bug in the module file or the newer omp version is 
just more restrictive.


Best regards,

Michael


  ---------------

Errors (just four shown) with complete usage of ifx 2025.3 (does not 
happen if ELPA is compiled with ifx 2025.1)

mpiifx -O2 -xAVX2 -FR -mp1 -w -prec_div -pc80 -pad -ip -DINTEL_VML 
-traceback -assume buffered_io -I/opt/intel/oneapi/mkl/2025.3/include 
-DELPA -I/usr/local/include/elpa_openmp-2025.06.002/elpa 
-I/usr/local/include/elpa_openmp-2025.06.002/modules -qopenmp -DParallel 
-c seclr4_tmp_.F
/opt/intel/oneapi/compiler/2025.3/opt/compiler/include/omp_lib.h(16): 
error #6401: The attributes of this name conflict with those made 
accessible by a USE statement.   [OMP_INTEGER_KIND]
       integer omp_integer_kind
--------------^
/opt/intel/oneapi/compiler/2025.3/opt/compiler/include/omp_lib.h(17): 
error #7747: Invalid parameter expression.   [4]
       parameter(omp_integer_kind=4)
---------------------------------^
/opt/intel/oneapi/compiler/2025.3/opt/compiler/include/omp_lib.h(18): 
error #6401: The attributes of this name conflict with those made 
accessible by a USE statement.   [OMP_LOGICAL_KIND]
       integer omp_logical_kind
--------------^
/opt/intel/oneapi/compiler/2025.3/opt/compiler/include/omp_lib.h(19): 
error #7747: Invalid parameter expression.   [4]
       parameter(omp_logical_kind=4)
---------------------------------^
/opt/intel/oneapi/compiler/2025.3/opt/compiler/include/omp_lib.h(20): 
error #6401: The attributes of this name conflict with those made 
accessible by a USE statement.   [OMP_REAL_KIND]

-- 
Dr. Michael Fechtelkord

Institut für Geowissenschaften
Ruhr-Universität Bochum
Universitätsstr. 150
D-44780 Bochum

Phone: +49 (234) 32-24380
Fax:  +49 (234) 32-04380
Email: Michael.Fechtelkord at ruhr-uni-bochum.de
Web Page: https://www.ruhr-uni-bochum.de/kristallographie/kc/mitarbeiter/fechtelkord/