[Darshan-users] Darshan and AIX?

[Phil Carns]

Thanks for the bug reports.  Tat stuff all sounds fixable.

On AIX, does mpicc do static linking or dynamic linking by default?

If it is the latter, then you might be able to use LD_PRELOAD for your 
wrappers.  (google tells me maybe this LDR_PRELOAD on AIX?  I haven't a 
clue).  This isn't ready yet, but we are working on an LD_PRELOAD 
compatible library in svn trunk right now.  It should be available at 
least in experimental form in the next release sometime after the holidays.

-Phil

On 12/22/2010 04:20 AM, Julian Kunkel wrote:
> Thanks guys for your help,
> I modified configure by setting cross_compiling=yes
> host and build did not work (maybe I have not experience with it, or
> it detects that it should compile for the same host and switches to
> no). now I was able to run configure properly.
>
> To get around a problem with mpicc (under IBM PE it is called mpcc) I
> created a wrapper bash script which just runs mpcc "$@"
>
> On IBMs PE it seems that MPIO_Request should be MPI_Request, otherwise
> the compiler argues.
> int MPI_File_iread_at(MPI_File fh, MPI_Offset offset, void *buf,
>      int count, MPI_Datatype datatype, MPI_Request *request);
>
> I wonder if this issue will appear with other MPI libraries as well,
> as it seems the MPI Standard uses here MPI_Request as Datatype.
>
> There are two C++ style (//) comments in lib/darshan-mpi-io.c
>
> At this point I have issues on compiling the parser with getopt, I
> might continue to investigate this issues next year.
> As we get a small Power7 Testsystem which runs under RedHat it might
> be a better choice to test it there ;-)
>
> Regards,
> Julian
>
> P.S. Have a merry chrismas.
>
> 2010/12/22 Rob Latham<robl at mcs.anl.gov>:
>> On Tue, Dec 21, 2010 at 11:51:45AM +0100, Julian Kunkel wrote:
>>> Hi,
>>> has anyone suceeded or experience to compile Darshan on an AIX (6.1)
>>> system so far?
>>>
>>> One problem seems to be that mpicc is used to compile the particular test for:
>>> checking size of long int... configure: error: cannot compute sizeof (long int)
>>> However, running an MPI executable is not possible (easily) on the login node.
>> one way around that is to put configure into cross compile mode with
>> the --build and --host flags.  kind of icky but will at least use
>> compile-time only tests.  we might have other configure tests that
>> execute code, and cross compile mode will find those as well.
>>
>>> I'm not so sure about the wrap (linker) flag used to intercept calls,
>>> probably another method is required in AIX, so I would be glad about
>>> experience from other AIX users.
>> I think you're it, Julian.
>>
>> ==rob
>>
>> --
>> Rob Latham
>> Mathematics and Computer Science Division
>> Argonne National Lab, IL USA
>>
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