Clik here to view.
Re: CentOS 7 KVM-SR-IOV Performance?
Hi Mikyung, What does the NUMA topology look like inside your VMs, i.e., are you pinning memory nodes as well as CPUs? Do you have cpu numa xml elements in your libvirt domain xml, e.g., like: ......
View ArticleRe: what happens when RoCE is run over lossy L2?
I wouldn't recommend. one of the more basic prerequisites for RoCE and other RDMA applications (like iSER) is a reliable connection. Cheers
View ArticleRe: what happens when RoCE is run over lossy L2?
Dear Yairi, not that i am pondering over running it over lossy. I am interested to know it theoretically. Regards, Rajesh Kumar Mallah
View ArticleRe: what happens when RoCE is run over lossy L2?
This should answer your open questions: RoCE v2 Considerations
View ArticleRe: Problem with ConnectX-2 Card! transfer-rate not simetrical!
Hi Enric, Beside the fact that your test servers are not alike and it is probably not going to ever be the same, measuring performance using a file transfer is not the right way of finding the root...
View ArticleGetting the Mellanox chip revision
Configuration:Host: CentOS 6.5Mellanox Adapter: ConnectX-3 ENMellanox Driver: MLNX_OFED_LINUX-3.0-1.0.1-rhel6.5-x86_64 with SRIOV enabledVirtualization: KVM with SRIOV devices PCI passthroughed How can...
View ArticleRe: CentOS 7 KVM-SR-IOV Performance?
Thanks for your help, Blair! Yes, I added NUMA information into libvirt domain xml (libvirtd 1.2.8 / CentOS7.1).In case of 4KB mpirun using 40G Ethernet, the result pattern is as follows:*...
View ArticleRe: CentOS 7 KVM-SR-IOV Performance?
Hi Mikyung, Your figures make it look like there might be a problem with hostB's VM... do you get the same results (hostA<->hostB's VM (3521.03 MB/s)) when reversing to hostA's VM<->hostB?...
View ArticleClik here to view.
Re: Getting the Mellanox chip revision
Hi, Can you please elaborate on which of the commands that did not work for you? Thanks
View ArticleRe: Getting the Mellanox chip revision
What is missing was the line Chip rev.: A1from http://www.mellanox.com/page/firmware_HCA_FW_identificationWhen I executed the command listed above it didn't show any line that says Chip rev: ...
View ArticleRe: Getting the Mellanox chip revision
Thanks yairi, but it doesn't show the chip revision. I was looking for physical card chip revision.
View ArticleRe: Getting the Mellanox chip revision
Thanks ophirmaor, exactly what I was looking for. To be precise I was looking for the line that says Engineering changes aka EC from the site you mentioned.[EC] Engineering changes: A4
View ArticleRe: Getting the Mellanox chip revision
Sorry yairi for me hw_ver: 0x1, but the chip rev is A6. I don't see any correlation. Thanks.
View Article