Newsgroups: comp.parallel.pvm
From: subraman@cs.iastate.edu (Krishnan Subramaniam)
Subject: Re:PvmDataInPlace
Organization: Iowa State University, Ames, Iowa
Date: 12 Apr 95 01:09:31 GMT
Message-ID: <subraman.797648971@stimpy.cs.iastate.edu>

Hi,
	I've been trying to locate a bug in my code for quite some time
and now I've come to the conclusion that it is in PVM somewhere!!
I'm using PvmDataInPlace and when I pack a message of integers of
size 2621440 bytes i.e 655360 ints I get a segmentation fault - for
no real reason the code does nothing but exactly what the timing.c
does but with PvmDataInPlace instead of PvmDataRaw.
	I tried using the unix debugger but its almost no use. I suspect
there might be a bug in the lpvmpack somewhere. It's not in my code
as it works for message sizes 20480 ... 1310720 bytes without a problem.
And this seg fault comes only sometimes - which is why I'm suspecting 
the bug could be somewhere in pvm's buffer management.
	I'm working on HP9000/800 machines with HP-UX 9.04 and I've
got pvm3.3.6 (with the patch for the connect() in 3.3.7 applied by hand).
	Does someone else have similar problems ???

Krishnan.
--
Krishnan R Subramaniam
Voice Mail : 515 - 296 4209.
Email	   : subraman@cs.iastate.edu   
HTML  	   : http://www.public.iastate.edu/~rsk/

