Newsgroups: comp.parallel.pvm
From: vaigl-j@osc.edu (James Vaigl)
Subject: Re: pvm_p, what does the implementation do?
Organization: The Ohio Supercomputer Center
Date: 28 Sep 1994 09:56:15 -0400
Message-ID: <36bslv$308@infomeister.osc.edu>

In article <36aoe4$7et@vixen.cso.uiuc.edu> mfreed@ux1.cso.uiuc.edu (Michele Freed) writes:
>I was wondering if any of you know what the pvm_pkDATATYPE actually
>does on a cluster of w/s.  Does it really 'pack' the data into a smaller
>size, add headers. Inother words if you pack 10 bytes, what is the buffer
>size and what is the size of the data in the tcp/ip packet? 

pvm_pk*() do not "pack" in the sense of compression. They merely
malloc space and copy your data into that new space.  Byte order
and floating-point representation may also be changed, but there's
no compression.

--Jim
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Jim Vaigl				Trollius Project
Ohio Supercomputer Center		http://www.osc.edu/lam.html


