Newsgroups: comp.parallel.pvm
From: pdinda@CS.CMU.EDU (Peter A Dinda)
Subject: PVM 3.3.3: Alpha to Paragon Strangeness
Organization: School of Computer Science, Carnegie Mellon University
Date: 29 May 1995 21:26:32 GMT
Message-ID: <3qde68$lmm@cantaloupe.srv.cs.cmu.edu>


I am trying to run a PVM program on both a DEC Alpha and an Intel
Paragon and am seeing some very odd behavior.  

First, I start the daemon on the paragon, grabbing just as many
nodes as I need.  Next, I start the console and add the Alpha.  
Now, from the Alpha, I start up the program, which then spawns
itself into the paragon.  I should note that the code spawns one exec
at a time.  After a while, I can see, via the console (but not, alas,
from XPVM), that all the processes on the paragon have started.  
At this point, all the paragon nodes send to the Alpha node to implement
a barrier.  The Alpha, however, never sees any messages.  Further, the
daemon on the the Paragon begins to (slowly) print garbage like

   l)*i+Z,B-312hY4 B5
   9
   m:
   Y<A=]A]BXCX.

I believe I am following the instructions for an MPP correctly.  In fact,
the program runs fine on just the paragon or just the Alpha.  I would 
appreciate some thoughts as to what is going on.

Peter A. Dinda


-- 
Peter A. Dinda (pdinda@cs.cmu.edu)
Graduate Student, School of Computer Science, Carnegie Mellon University

