--DKU6Jbt7q3WqK7+M
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
On Fri, Feb 07, 2003 at 11:31:00AM -0600, Jeremy Enos wrote:
> I like this idea... I remember trying to find a piece of software w/ this=
=20
> functionality. However, I also remember serious performance consideratio=
ns=20
> in having a local /etc/hosts for MPI purposes. I could try to dig up=20
> details if you're interested. But the resulting action was having an=20
> /etc/hosts file on each compute node to prevent it from hitting a DNS=20
> server to find out about fellow nodes.
How often is MPI bringing up or breaking down a socket? Unless its doing
this multiple times a second, I doubt local DNS on the head node would play
an effect in slowness. I've actually found that network lookups are faster
than local lookups if the hosts file is large, as local lookups are always a
linear scan of the file, and network lookups tend to be in memory on the
server and in a hash table.
-Sean
--=20
_______________________________________________________________________
=09
Sean Dague [EMAIL PROTECTED] http://dague.net
There is no silver bullet. Plus, werewolves make better neighbors than
zombies, and they tend to keep the vampire population down.
_______________________________________________________________________
--DKU6Jbt7q3WqK7+M
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org
iD8DBQE+Q/OfSamXem9TdyYRAhviAKCxqbrpZ66Ji5adLzCMCssUW2avTgCfQrMf
nFtD0HzLKmBFo8bSM+lDgaM=
=OPfg
-----END PGP SIGNATURE-----
--DKU6Jbt7q3WqK7+M--
-------------------------------------------------------
This SF.NET email is sponsored by:
SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See!
http://www.vasoftware.com
_______________________________________________
Oscar-devel mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/oscar-devel
