[mpich-discuss] Use other's mpicc to compile code with my modified ROMIO

Jaln valiantljk at gmail.com
Sun Oct 5 16:23:36 CDT 2014


Hi Rob,


Thanks, I’m adding some experimental features in ROMIO,

ROMIO can be built as a standalone library.  If you link it on top of your
mpi program, it will override the existing MPI-IO calls.

Can you please tell me how to compile the code with a standalone ROMIO? For
example, with cray’s default mpi compiler, and a modified ROMIO source, and
a test MPI program, e.g., test.c


I saw one old post in mpich-discuss, ‘building external ROMIO’, I believe
that guy was asking the similar questions,  but I think I didn’t get the
answers from that post.

Thanks Rob,


Best,

Jialin

On Sun, Oct 5, 2014 at 4:00 PM, Rob Latham <robl at mcs.anl.gov> wrote:

>
>
> On 10/04/2014 08:57 PM, Jaln wrote:
>
>  I have a modified ROMIO library,
>>
>
> Hello! I would love to hear more about the modifications you are exploring
> in ROMIO.
>
> >  but I have to compile the code using
>
>> NERSC Hopper's default MPI compiler, is there any way to let the
>> collective I/O code run with my modified ROMIO library. (and of course
>> compile using their default mpicc)
>>
>
> ROMIO can be built as a standalone library.  If you link it on top of your
> mpi program, it will override the existing MPI-IO calls.
>
>  I try to compile my own mpicc and run on that cluster, but seems, the
>> hopper cluster
>> has specific optimized cray-mpi compiler and wont let my code compiled
>> or executed correctly on compute nodes.
>>
>
> I'm sure it's possible to do whatever the cray-mpi compiler is doing, but
> Wei-keng Liao at Northwestern has done the standalone external library
> approach on past cray machines -- including Hopper, I think.
>
> ==rob
> --
> Rob Latham
> Mathematics and Computer Science Division
> Argonne National Lab, IL USA
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