Newsgroups: comp.parallel.pvm
From: schiotz@oersted (Jakob Schiotz)
Reply-To: schiotz@fysik.dtu.dk
Subject: Max buffer size for incoming messages?
Organization: Physics Department, Techn. Univ. of Denmark
Date: 27 Sep 1994 15:54:52 GMT
Message-ID: <369f8c$o5d@news.uni-c.dk>

I have a PVM program where the slaves are sending 26 large messages
(~100 kB) to other slaves. In theory up to 24 such messages may arrive
while the slave is busy processing the first. I have tried to increase
the message fragment size to improve performance, but if I increase
the fragment size to say 64k (or 128k) the slaves crash (but until the
crash the program runs faster). Is there a maximum buffer size for
incoming messages, so the buffer may overrun if many messages arrive
from different sources at the same time?

I am running PVM 3.3.3 on a CM-5E parallel computer.

--
Jakob Schiotz                    !  The noble art of losing face
Physics Department               !  May someday save the human race
Technical University of Denmark  !  And turn into eternal merit
DK-2800 Lyngby, Denmark          !  What weaker mind would call disgrace
schiotz@fysik.dtu.dk             !                  - Piet Hein
              ^^^ Note: new domain

