Limitations [ Interprocess Communication:Programmer's Guide ] MPE/iX 5.0 Documentation
Interprocess Communication:Programmer's Guide
Limitations
Currently, MPE XL does not support NOWAIT I/O to Message files across a
network. In most cases this is not an important limitation, because it
is rare that both readers and writers to the same message file need to
use NOWAIT I/O. If the file is made local to the accessor that needs
NOWAIT I/O, the other accessor can then do WAIT I/O across the network.
MPE/iX 5.0 Documentation