-----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: sam...@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----- _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
