[MPICH] Hi..Let me ask you about FILE I/O using MPICH2

[AO AA±O]

Hi..I've got a question about FILE I/O using MPICH2

this is the code i worte.

MPI_File_open(MPI_COMM_WORLD"info.txt",MPI_MODE_RDWR,MPI_INFO_NULL,&file2);

MPI_File_read_shared(file2,buf2,bufsize,MPI_CHAR,&status); 
	
the problem is I can't read info.txt although it's in the same directory 
with mpiexec.

but if I use MPI_File_wriete_shared, I could find "info.txt" and read it.

another strange thing is that if I change the name "info.txt" into 
"ano_info.txt", there must be

error about not finding "info.txt"

it still can find "info.txt"...How could it be possible? maybe it's caused 
by channel or file pointer.

hm..anyway, I want to use network mapped drive with FILE I/O

any suggestion for that? plz, give me some


-Dean