> On Sep 8, 12:02 pm, "Dr Ivan D. Reid" brunel.ac.uk> wrote:
>
>
>

>> On Mon, 8 Sep 2008 00:29:40 -0700 (PDT), Fatemeh gmail.com>
>> wrote in <23de88ca-360d-44d2-b1f2-da24b9216...@z66g2000hsc.googlegroups.com>:

>

>>> I've written a code in fortran90. Since my sample is large, my code
>>> runs slowly.
>>> I need some flags in order to enter them to Makefile which can be able
>>> to run the code with higher speed.
>>> -----------------------------------------------------------------
>>> this is my Makefile:
>>> ----------------------------------
>>> FC=ifort
>>> NROBJS=nr.o nrtype.o parametros.o
>>> MYOBJS= wfinside.o gauntutils.o leedutils.o
>>> MYSUBFUN=DoubleFactorialDP.o FactorialDP.o Gaunt.o Legendre.o
>>> SphericalHarmonicYZ.o SqrtFactorialDP.o ThreeJSymbol.o factorial.f90
>>> bessel.o writefile.o intgral.o ComlexUnit.o
>>> .SUFFIXES:
>>> .SUFFIXES: .f90 .o

>

>>> all: $(NROBJS) $(MYOBJS) $(MYSUBFUN) main-goodformat2.o
>>> $(FC) $(NROBJS) $(MYOBJS) $(MYSUBFUN) main-goodformat2.o -o
>>> wannier.exe

>

>>> .f90.o:
>>> $(FC) -c $<

>

>>> nr.o: nr.f90 nrtype.o
>>> nrtype.o: nrtype.f90

>

>> ...

>

>>> Would you please guide me if there is any flag for this purpose?
>>> (I cannot write my code in Parallel. so I should find some flags!!!)
>>> I'm anxiously looking forward your reply and guidelines.

>

>> You don't appear to be using any optimisation. Try adding -O3 to
>> your .f90.o: line. Type in 'ifort --help' to get a listing of some flags you
>> can try. There's also a chance you can get better interprocedural optimisation
>> by combining some of your source files together.

>

>> --
>> Ivan Reid, School of Engineering & Design, _____________ CMS Collaboration,
>> Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
>> KotPT -- "for stupidity above and beyond the call of duty".

>
> IN WHICH LINE OF MAKEFILE SHOULD I ADD -O3 ?
> WHAT IS YOUR MEAN ABOUT "combining some of the source files"?