Page History

...

Section

Column

Panel

borderColor	white
bgColor	white
titleBGColor	white
borderStyle	dotted
title	If using 'cmake' command

Code Block

title	gcc/gfortran compilers

export CC=gcc
export FC=gfortran
cmake .... -DCMAKE_C_FLAGS="-g -O2" -DCMAKE_Fortran_FLAGS="-g -O2"

Code Block

title	Intel compiler:

export CC=icc
export FC=ifort
cmake ... -DCMAKE_C_FLAGS="-g -O1 -fp-model precise"   \
          -DCMAKE_Fortran_FLAGS="-g -O1 -fp-model precise"

Code Block

language	bash
title	Cray compiler (cce)

export CC=cc
export FC=ftn
cmake ... -DCMAKE_C_FLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"  \
          -DCMAKE_Fortran_FLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"

Code Block

title	IBM compiler:

export CC=xlc_r
export FC=xlf90_r
cmake ... -DCMAKE_C_FLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"  \
          -DCMAKE_Fortran_FLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"

Column

Panel

borderColor	white
bgColor	white
titleBGColor	white
borderStyle	dotted
title	If using 'configure' command

Code Block

title	gcc/gfortran compilers

export CC=gcc
export FC=gfortran
export CCFLAGS="-g -O2"
export FCFLAGS="-g -O2"
./configure ...

Code Block

title	Intel compiler:

export CC=icc
export FC=ifort
export CFLAGS="-g -O1 -fp-model precise"
export FCFLAGS="-g -O1 -fp-model precise"
./configure ...

Code Block

language	bash
title	Cray compiler (cce)

export CC=cc
export FC=ftn
export CFLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"
export FCFLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"
./configure ...

Code Block

title	IBM compiler:

export CC=xlc_r
export FC=xlf90_r
export CFLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"
export FCFLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"
./configure ...

Info

title	Cray compiler	For help contact...

OpenIFS support: openifs-support@ecmwf.int.

Note

title	Cray compiler

Possible issues with the Cray compiler are related to building shared libraries. If problems occur try using the option "--disable-shared" to only build statically linked libraries. It may be necessary to set the environment variable CRAYPE_LINK_TYPE=dynamic. For assistance, please contact OpenIFS support.

Note

title	Intel compiler

We currently recommend not using a higher optimization level than -O1 with the Intel compiler. Failures have been seen with grib_api and the Intel compiler when compiled with -O2.

Some versions of the Intel compiler (v14.0.x) can produce an error "unknown option -soname" when using 'configure. If this occurs try using "--disable-shared" or try the cmake command instead.

Note

title	IBM compiler

For the IBM xlc compiler we recommend disabling the creation of 'shared libraries' which is known to cause problems with some versions of grib_api.

In this example, note the use of the '_r' form of the IBM compiler to ensure grib_api is compiled 'thread-safe'.

...

Space shortcuts

Page tree

Versions Compared

Old Version 76

New Version 77

Key