An upgrade breaks input redirection

[Bill Wichser]

Upgrade of a cluster to Intel v8 compilers has now broken input 
redirection which was functioning with a patched version of 
OpennPBS_2_3_16 and mpiexec-0.73 running under a Linux 2.4.20-18.7smp 
kernel.

Upgrading and compiling mpiexec-0.76 offers no help.

mpiexec code is compiled with the icc compiler.  At the moment, 
compiling with gcc changes nothing.  The file is F90 code and looks like 
this:

program io

   integer :: i,j,k
   real :: x,y,z

   read (5,*) i,j,k,x,y,z

   write (6,*) 'done: ',i,j,k,x,y,z

end program io


The PBS script simply runs this code
#!/bin/sh
#PBS -l nodes=1:ppn=1,walltime=120:00:00

cd ~bill/iotest
mpiexec -verbose ./a.out < inp
./a.out < inp



cat inp
-------
1 2 3 1.1 2.2 3.3


When run with mpiexec the error file looks like this:
forrtl: Illegal seek
forrtl: severe (39): error during read, unit 5, file stdin
Image              PC        Routine            Line        Source 

a.out              08087C75  Unknown               Unknown  Unknown
a.out              08058DF1  Unknown               Unknown  Unknown
a.out              080593E8  Unknown               Unknown  Unknown
a.out              0804CFA0  Unknown               Unknown  Unknown
a.out              08049DA7  Unknown               Unknown  Unknown
a.out              08049F94  Unknown               Unknown  Unknown
a.out              42017589  Unknown               Unknown  Unknown
a.out              08049C31  Unknown               Unknown  Unknown
mpiexec: Warning: task 0 exited with status 39.


But when run with ./a.out <inp all seems well.  The a.out exec was 
compiled with the mpif90 command.  I don't know who is at fault here, 
the compiler or mpiexec.  I have been told that old programs continue to 
work, even with the newly compiled mpiexec, but once recompiled with the 
v8 Intel compilers, all redirection breaks.

Can anyone offer suggestions on where to proceed?

Thanks,

Bill