[mpich-discuss] MPI i/o like fopen (filename, "rb")

[Jeff Hammond]

You can Google or go to
http://www.mcs.anl.gov/research/projects/mpi/www/www3/ to get
documentation for how to use the following commands:

MPI_File_get_size
MPI_File_open
MPI_File_read
MPI_File_write
MPI_File_close

These are the ones you need to do a straightforward conversion of your code.

Best,

Jeff

On Fri, Nov 16, 2012 at 11:34 AM, Muhammad Zulfikar Handana
<zulfikarhandana at gmail.com> wrote:
> dear,
> i have a little confused about MPI i/o, because iam new for this
> programming. i have some question.
> if i want make some program with this code
>
> 1)
>
> int get_size(char *filename)
> {
>     struct stat buf;
>     stat(filename,&buf);
>     int j =buf.st_size;
>
>     return j;
> }
>
> 2)
>  key = fopen(key_file, "rb");
>         fread(Kunci, pk, 1, key);
>         for(i=0;i<Nk*4;i++)
>         Key[i]=Kunci[i];
>
> 3) hasil = fopen (file_akhir, "wb");
>     for (k=0;k<(((block-1)*16)+pad);k++)
>     {
>                fputc(output[k], hasil);
>         }
>         fclose (hasil);
>
> how to translate that code into MPI i / o ?
> thanks a lot for your attention
>
> Regards
>
>
> Handana
>
>
>
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-- 
Jeff Hammond
Argonne Leadership Computing Facility
University of Chicago Computation Institute
jhammond at alcf.anl.gov / (630) 252-5381
http://www.linkedin.com/in/jeffhammond
https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond