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From: wen-king@csvax.caltech.edu (Wen-King Su)
Newsgroups: comp.parallel
Subject: CE - stty problem report
Message-ID: <7501@hubcap.clemson.edu>
Date: 20 Dec 89 15:23:04 GMT
Sender: fpst@hubcap.clemson.edu
Lines: 23
Approved: parallel@hubcap.clemson.edu

Description:
    The Cosmic Environment run-time system for the hosts is made up of a
    set of background processes that support a message passing interface
    for UNIX processes.  On some versions of UNIX, outputs to terminals
    (such as error messages) can be blocked by a little used terminal
    setting: stty tostop.  If tostop is on, the outputing service process
    will be blocked and subsequently killed by UNIX.

Symptoms:
    1) Whenever something is to be printed by a processe in a
       multicomputer process group, the process group is deallocated.
    2) Whenever something is to be printed by a node process of a
       non-multicomputer process group (non-cube), the node process is killed.

Temporary solution:
    Disable tostop by "stty -tostop".

Permanent solution:
    CE will be modified to disable tostop whenever CE is used.

/*------------------------------------------------------------------------*\
| Wen-King Su  wen-king@vlsi.caltech.edu  Caltech Corp of Cosmic Engineers |
\*------------------------------------------------------------------------*/