Newsgroups: comp.parallel.pvm
From: wooks@slx12.NoSubdomain.NoDomain (Wookho Son)
Subject: Using file descriptor in PIOUS on PVM
Keywords: PIOUS, PVM
Organization: Texas A&M University, College Station, TX
Date: 16 Jun 1995 16:32:41 GMT
Message-ID: <3rsbn9$nec@news.tamu.edu>

Hello,

Currently, I'm using PIOUS on PVM for concurrent I/O among multiple tasks
residing on different processors.  However, I have some difficulty in using
"file descriptor" for reading input data from external files for the programming
running.
PIOUS is supposed to recognize only those files (either for reading or writing)
created by itself. But, how do we accept the initial input data from an external
files (We can not create "fd" for input files).

Other questions that I have:

(1). Is there any restriction on the number of "file descriptor" that can be
     created using PIOUS in a sesssion?
(2). I've tried to use the usual "file pointers" intermixed "file descriptors"
     on PIOUS, by having some designated process perform the input operation (thus
     the input is not done concurrently, but by one process which created the
     file pointer). But, it didn't seem to work at all.
     Is there any problem doing this?

Appreciate someone help on these.



-- 
Wookho Son          Dept. of Computer Science

