Newsgroups: comp.parallel.pvm
From: Francesco Giuseppe Fantauzzi <fantauzz@ghost.sm.dsi.unimi.it>
Subject: Strange troubles with TAPE/PVM and ParaGraph
Organization: Computer Science Dept. - University of Milan
Date: 13 Jun 1995 09:31:38 GMT
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <3rjltq$juk@ghost.sm.dsi.unimi.it>

I'm using a master/slave paradigm for parallel computation under PVM.
I instrumented my application with PVM/TAPE and then I read trace files
with ParaGraph. I'm working on a RISC/6000 (with only one processor).

If I spawn only 4 or 5 slaves, everything works fine... but if I use more than
5 slaves, when I try using ParaGraph I get:

warning: message received before sent (msg_count < 0).
warning: message received before sent (no previous unreceived send with
matching type.

..then ParaGraph does not display anything!
I guess that with more than 5 slaves my RISC/6000 is overloaded, so trace files
are not properly generated by PVM/TAPE. But I'm not sure it's so... just
guessing.

Does any one out there reported the same experience? Any tip to fix the
problem?

Thanks for any help (and sorry for my poor english :)
   Francesco G. Fantauzzi

fantauzz@ghost.sm.dsi.unimi.it


