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Windows VMs hang out NFSoRDMA on CentOS 6.5
Hello. We've got stuck on such a problem. 4 nodes are connected to a storage via NFS over RDMA. Hardware is:Intel 2312WPQJR as a nodeIntel R2312GL4GS as a storage with Intel Infiniband 2 ports...
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Re: RX ring parameter
Thanks, that's helpful. I will test a few different values for dev_weight to see how much difference it makes for my use case.
View ArticleConnectX-3 Pro EN with QSA adaptor and Intel X520-DA2
Hi,I am trying to establish a 10G link between a ConnectX-3 Pro EN with QSA adaptor and Intel X520-DA2. The QSA part number is MAM1Q00A-QSA and should allow the 40G card to interface to a 10G card of...
View ArticleTime taken to adjust the signaling rate or number of active links (IB)?
Hello,I was wondering if there was some documentation or a general sense of the time it would take a switch to adjust (1) the signaling rate of a connection, and (2) the number of links in use for a...
View ArticlePlease let me know 40Gb Ethernet card can split to 4 x 10Gb ?
Hi, No I'm using 40Gb Ethernet card CX314A. Recently, I find the split cable"hybrid QSFP+ to 4x SFP+ passive copper cables" and it mentions,The QSFP+ to 4x SFP+ cables provide 40GbE systemsthe ability...
View ArticleCluster with 2 machines with FDR and without switch?
HiIs it possibleto connecttwomachines withInfinibandFDRdirectlywithouta switch.Have access to:2MellanoxMCX354A-FCBTandanFDRcable:MC2207130-001.-Linux,CentOS6.5(RHEL6.5)andOFED.Does it work?
View ArticleRe: Cluster with 2 machines with FDR and without switch?
Yes, you can!but you must have a SM on any machine of them.
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Re: Time taken to adjust the signaling rate or number of active links (IB)?
Hi Taylor,It takes ~30sec for QDR link and ~60sec for FDR link, for the physical connection.The logical link raising time depends on size of the subnet (in small fabrics it takes few more seconds). All...
View ArticleRe: Please let me know 40Gb Ethernet card can split to 4 x 10Gb ?
Hi Morinisa,This is currently not supported. The only way to use a splitter cable is to connect the QSFP side to a switch (e.g. SX1036) and the SFP+ side to the adapter. Ophir.
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UFM 4.0 GUI hangs in "Initializing ..." state
Hello, I just installed UFM 4.0 on a RHEL5; the UFM is configured to run in monitor mode, and `ufmd` starts successfully:...
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Re: Re: Please let me know 40Gb Ethernet card can split to 4 x 10Gb ?
Hi Ophirmor, Thank you.I got it, Mellanox HCA can't do splitting.I will search other vendor cards. Regards,Morihisa
View ArticleRe: Please let me know 40Gb Ethernet card can split to 4 x 10Gb ?
Hi Morihisaif you have a 10GbE switch and 40GbE port, you can use QSA (QSFP -> SFP+ adapter) or QSFP to SFP cable, to reduce the speed of the adapter from 40GbE to 10GbE.The is no way to create 4...
View ArticleRe: Re: Please let me know 40Gb Ethernet card can split to 4 x 10Gb ?
Hi Ophirmaor, There is no way ? That is,"The QSFP+ to 4x SFP+ cables provide 40GbE systemsthe ability to connect to 10GbE switches or adapter cards."in...
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Re: Please let me know 40Gb Ethernet card can split to 4 x 10Gb ?
Hi Morihisa,We don't support the splitting of the 40GbE adapter port to 4 ports of 10GbE.What I'm saying is that if you just want to reduce the speed from 40GbE to 10GbE, there are simple ways to do it...
View ArticleRe: UFM 4.0 GUI hangs in "Initializing ..." state
Hi Riccardo,How big is this cluster you are monitoring?I am not sure what the problem is but i can tell that the guys in the shop were adding many features and fixes related to scalability and the...
View ArticleRe: IPoIB performance issue!!
Performance measurement... a world within a world!Dealing with Mellanox InfiniBand for the last decade++, I know for fact that it can do more. it is just a matter of use case.debugging complains about...
View ArticleRe: ConnectX-3 Pro EN with QSA adaptor and Intel X520-DA2
HiI don't have have specific experience with this use-case but I forwarded this to few other experienced people. Hopefully, somebody saw this somewhere else and can assist. In the meantime, can you...
View ArticleRe: Windows VMs hang out NFSoRDMA on CentOS 6.5
Hi Nikolay,At the beginning of your post you wrote you are using "Intel Infiniband 2 ports controller and later on the dump (which i will assume taken from the same client) i see mlx4 mentioned which...
View ArticleRe: UFM 4.0 GUI hangs in "Initializing ..." state
Hi Yairi, thanks for your reply!> How big is this cluster you are monitoring?It's about 700 nodes, ~4700 IB ports total (including hosts andswitches).> I am not sure what the problem is but i can...
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