Re: [Valgrind-developers] Valgrind/PVM

[Brett C. <bc...@tu...>]

Sorry for the lack of background in my original post, here are some more
details:

PVM (Parallel Virtual Machine) is software used for distributed and
parallel computing. The pvm_spawn function can be used to spawn an
executable either locally or remotely, depending on the environment it
is running under and the user's preference. A pvm_spawn is analogous
to a fork-exec, with a little more going on to allow the task to be
managed by a running PVM daemon, and of course the possibility to
spawn across a network.

The debug flag, when included in a pvm_spawn call, will allow the
processes to be spawned under a predefined debug script. In such a
script you would set valgrind to be the debugger along with some
command line options. This essentially means that the debugger will be
a PVM task, operating on the original executable. The problem with
this being that you would need to set and unset the flag in your code
and recompile it every time you wanted to turn debugging on or off.

 > In message <167...@tu...>
 >           Brett Carson <bc...@tu...> wrote:
 >
 > > I've been using valgrind with memcheck to monitor the memory use of my
 > > PVM programs. Currently, spawning PVM children under valgrind requires
 > > recompiling my PVM code with a debug flag set on pvm_spawn calls. As
 > > one would imagine this can be annoying. I'd like to avoid having to
 > > recompile code and redistribute it around my cluster every time I
 > > wanted to use valgrind.
 >
 > [ snip rest of mail ]
 >
 > How about you tell us what PVM is before you go any further... Some
 > information about how pvm_spawn works and what this debug flag does
 > that makes it acceptable to valgrind and why it doesn't work without
 > that would always be useful.
 >
 > Tom
 >

-- 
Brett Carson
School of Mathematics, Statistics and Computer Science
University of New England, Armidale, NSW 2351
Australia
bc...@tu...
Phone: +61 2 67732633

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