[Beowulf] cloudy HPC?

[Christopher Samuel]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 31/01/14 07:57, Mark Hahn wrote:

> For instance, I've heard some complaints about doing MPI on virtualized
> interconnect as being slow.  but VM infrastructure
> like KVM can give device ownership to the guest, so IB access *could* be
> bare-metal.  (if security is a concern, perhaps
> it could be implemented at the SM level.  OTOH, the usual sort
> of shared PaaS HPC doesn't care much about interconnect security...)

Glenn Lockwood has a nice in-depth post reporting results (which he
presented at SC'13, though I missed his talk) about "High-Performance
Virtualization: SR-IOV and InfiniBand" which sounds like it might have
the sort of hard numbers you're after.

http://glennklockwood.blogspot.com.au/2013/12/high-performance-virtualization-sr-iov_14.html

He compares virtualised IB (KVM and SR-IOV) to bare metal and also to
EC2 instances.

The blog was written post-SC13 so there's extra bonus bits too.

Best of luck!
Chris
- -- 
 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iEYEARECAAYFAlL0HGEACgkQO2KABBYQAh92OACdGixuPKpxW5BfYk+znoZYkDWf
ZhMAn3KazHqacpuSrfQ2+uJ5zroC/6uK
=q8py
-----END PGP SIGNATURE-----