[mpich-discuss] Newbie getting started question?

[John Chludzinski]

Tried: "$ ldconfig -p | less" and did a search on "libmpichf90" - nothing.

"apt-file" is an unrecognized command.

$ module load mpich2-x86_64
ModuleCmd_Load.c(204):ERROR:105: Unable to locate a modulefile for
'mpich2-x86_64'



On Sat, Sep 15, 2012 at 6:54 AM, Evren Yurtesen IB <eyurtese at abo.fi> wrote:

> Check with ldconfig -p if you see libmpichf90 in the output.
>
> The .a files are for static linking, .so files are for dynamic linking. If
> you dont see the .a files, this simply means that your package does not
> include them. I have them on my Ubuntu box. (but I dont see them on a
> Fedora box)
>
> $ apt-file search 'libmpichf90.a'
> libmpich1.0-dev: /usr/lib/mpich/lib/**libmpichf90.a
> libmpich2-dev: /usr/lib/libmpichf90.a
> $
>
> If you are using fedora, try this before compiling, it should load all the
> necessary paths:
>
> module load mpich2-x86_64
>
> To be honest, I was using fedora until recently when I got fed up with it
> due to similar problems :)
>
> Thanks,
> Evren
>
>
> On Fri, 14 Sep 2012, John Chludzinski wrote:
>
>  $ mpif90 -o ex1 ex1.f95
>> /usr/bin/ld: cannot find -lmpichf90
>> /usr/bin/ld: cannot find -lmpichf90
>> /usr/bin/ld: cannot find -lmpich
>> collect2: ld returned 1 exit status
>>
>> No go!
>>
>> I used "yum install mpich2", should this bring the compiler wrapper?
>>
>> Why does the PETSc MPICH2 lib directory have *.a files while the newly
>> installed MPICH2 have *.so files?
>>
>> ---John
>>
>> On Fri, Sep 14, 2012 at 5:54 PM, Anthony Chan <chan at mcs.anl.gov> wrote:
>>       If the mpich2 installation you are using has Fortran 90 binding
>>       correctly, you don't need -L<MPICH2_LIBDIR> when using mpif90.
>>       The compiler wrapper should have taken care of setting all -L
>>       flags to mpich2 libraries, try
>>
>>       mpif90 -o ex1 ex1.f95
>>
>>       A.Chan
>>       ----- Original Message -----
>>       > I have a small example program I've built and tested before
>>       using
>>       > MPICH2
>>       > that come with the PETSc installation.
>>       >
>>       > I just installed MPICH2 on a new machine (without PETSc)
>>       using: yum
>>       > install
>>       > mpich2.
>>       >
>>       > I added /usr/lib/mpich2/bin/ to my PATH env. variable and
>>       tried:
>>       > mpif90
>>       > ex1.f95 -L/usr/lib/mpich2/lib/. This resulted in:
>>       >
>>       > /usr/bin/ld: cannot find -lmpichf90
>>       > /usr/bin/ld: cannot find -lmpichf90
>>       > /usr/bin/ld: cannot find -lmpich
>>       >
>>       > I checked and the PETSc installation has *.a files in the lib
>>       > directory,
>>       > whereas my new installation of MPICH2 has *.so files. What do
>>       I need
>>       > to do
>>       > to get this to compile?
>>       >
>>       > ---John
>>       >
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>>
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