/[MITgcm]/MITgcm/tools/build_options/linux_amd64_ifort_generic_mpi
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revision 1.1 by ce107, Fri Feb 23 02:52:25 2007 UTC revision 1.3 by ce107, Tue Jul 31 22:26:20 2007 UTC
# Line 1  Line 1 
1  #!/bin/bash  #!/bin/bash
2  #  #
3  # composed and tested by ce107 on ross/weddell  # Composed and tested by ce107 on ross/weddell (Opteron system)
4  # for more speed on Core2 processors replace -xW with -xT  # Should work fine on EM64T and other AMD64 compatible Intel systems
5  # for more speed on Pentium4 based EM64T processors replaces -xW with -xP  # a) Processor specific flags:
6    #    1) for more speed on Core2 processors replace -xW with -xT
7    #    2) for more speed on Pentium4 based EM64T processors replaces -xW with -xP
8    # b) For more speed, provided your data size doesn't exceed 2GB you can
9    # remove -fPIC which carries a performance penalty of 2-6%.
10    # c) Provided that the libraries you link to are compiled with -fPIC this
11    # optfile should work.
12    # d) You can replace -fPIC with -mcmodel=medium which may perform faster
13    # then -fPIC and still support data sizes over 2GB per process but all
14    # the libraries you link to myst be compiled with -fPIC or -mcmodel=medium
15    # e) Changed from -O3 to -O2 to avoid buggy Intel v.10 compilers. Speed
16    # impact appears to be minimal.
17  #  #
18  # DON'T FORGET to set environment variable MPI_INC_DIR to the include  # DON'T FORGET to set environment variable MPI_INC_DIR to the include
19  # directory of your MPI implementation  # directory of your MPI implementation
# Line 10  Line 21 
21  FC=mpif77  FC=mpif77
22  F90C=mpif90  F90C=mpif90
23  CC=mpicc  CC=mpicc
24  LINK='mpif90 -i-static -no-ipo'  LINK='mpif90 -i-dynamic -no-ipo'
25    
26  DEFINES='-DALLOW_USE_MPI -DALWAYS_USE_MPI -DWORDLENGTH=4'  DEFINES='-DALLOW_USE_MPI -DALWAYS_USE_MPI -DWORDLENGTH=4'
27  CPP='cpp  -traditional -P'  CPP='cpp  -traditional -P'
# Line 33  fi Line 44  fi
44  #  roughly equivalent to -ieee  #  roughly equivalent to -ieee
45  if test "x$IEEE" = x ; then  if test "x$IEEE" = x ; then
46      #  No need for IEEE-754      #  No need for IEEE-754
47      FOPTIM='-O3 -align -xW -ip'      FOPTIM='-O2 -align -xW -ip'
48  else  else
49      #  Try to follow IEEE-754      #  Try to follow IEEE-754
50      FOPTIM='-O2 -align -xW -ip -mp'      FOPTIM='-O2 -align -xW -ip -mp'
51  fi  fi
52  F90FLAGS=$FFLAGS  F90FLAGS=$FFLAGS
53  F90OPTIM=$FOPTIM  F90OPTIM=$FOPTIM
54  CFLAGS='-O3 -ip -fPIC'  CFLAGS='-O2 -ip -fPIC'
55    
56  if [ "x$NETCDF_ROOT" != x ] ; then  if [ "x$NETCDF_ROOT" != x ] ; then
57      INCLUDEDIRS="${NETCDF_ROOT}/include"      INCLUDEDIRS="${NETCDF_ROOT}/include"
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