Re: 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 ArticleRe: Getting the Mellanox chip revision
Hi, Can you please elaborate on which of the commands that did not work for you? Thanks
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Re: Getting the Mellanox chip revision
Try thisHowTo Find Mellanox Adapter Type and Firmware/Driver version (Linux)
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 ArticleRe: CentOS 7 KVM-SR-IOV Performance?
Thanks, Blair! I pasted more detail configurations/result on host/vm here. * mpirun result (bandwidth, 4KB message size) - between 2 hosts mpirun -np 2 -host A,B : 3798.62 MB/smpirun -np 2...
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Centos 6.6 with 2.6.37.6 Kernel, MLNX_OFED's mlnx_add_kernel_support.sh failed.
Hi, I try to install MLNX_OFED software on centos 6.6 machine which use 2.6.37.6 kernel compiled from source from kernel.org .I'd want to keep it as 2.6 that compiled from mainline source not any...
View ArticleRe: what happens when RoCE is run over lossy L2?
Dear YairiThe referred article does answer my query. thanks."An underlying lossless Ethernet network is required for RoCE traffic only in order to avoid systematic packet drops resulting from resource...
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