RDMA Vs IPoIB question
I have a question that whether user applications can choose to adopt RDMA or IPoIB, when IPoIB is enabled? In other words, when IPoIB is enabled, can we still use the RDMA effect while communicating...
View ArticleReceive Side Scaling
Hello,I'm running RHEL 7 acting as a router and performing throughput tests.My machine is a 6 physical cores Xeon with Connect-X 3 EN dual-port.The Spirent generator sends packets from many different...
View ArticleMellonex QSFP cables - what is the difference between the QDR IB cables and...
Hi As per the title?! Is there any reason why I can't use a cable that is tagged as IB for an ethernet QSFP port - obviously with an Ethernet connect-x card? I realise that this will not be...
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InfiniBand: Mellanox Technologies MT25208 [InfiniHost III Ex] (rev a0) vs...
Hi Guys I really need some help here, I'm setting up a small cluster and decided instead of using 10gig ethernet I'll play with infiniband SO here I am at step one with 3 * Cisco SFS-HCA-250-A1...
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Re: RDMA Vs IPoIB question
Hi, Sure - IPoIB operates on a higher layer and you could just tell your application specifically to use the IPoIB interface (ibx) or ignore it and only specify the Mellanox NIC (mlx4 or mlx5) and call...
View ArticleRe: Port 1 IB Port 2 Ethernet - ESXI 5.1 (5.5)
To my best knowledge this driver still does not support different protocol types on different ports
View ArticleFCA version available with the latest HPCX package
Hello, I've installed the latest HPC-X™ Rev 1.2 package from a tarfile for OFED 1.5.3+ on RHEL6u4 system. The User Manual states that the default FCA is v2.5. I was wondering if I need to install or...
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Re: FCA version available with the latest HPCX package
Please, refer to README in the HPC-X package in order to see how to enable FCA v3. The clue is 'hcoll' component.In order to detect OSHMEM version, run oshem_info --version command.
View ArticleRe: RDMA Vs IPoIB question
Thanks Ferber. I got your point. it generally depends that whether my application supports VERBS interface to support RDMA or not. If yes, the it is possible to access the RDMA protocol even if my...
View ArticleHow Do I change the port mode on an MHGH28-XTC
Hi, I have been looking all over to find a command to change the port mode form IB to EN on the MHGH28-XTC cards so we can use them for 10gbe. Can someone help with this? Thanks, Winman1024
View ArticleRe: How Do I change the port mode on an MHGH28-XTC
MHGH28-XTC Looks to be IB DDR hca and is not capable of switching to Ethernet. Regardless, the general command in linux would be "/sbin/connectx_port_config [-d|--device <PCI device id>]...
View ArticleRe: How Do I change the port mode on an MHGH28-XTC
These cards are capable of either DDR IB or 10Gbe. Thank you, Winman1024
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How to fix SRP initiator errors with MLNX OFED 2.3-2.0.5 and RHEL6.5 0- how...
I see a lot of scsi errors with srp when I connect from RHEL 6.5 to a DDN S2A 9900 storage system: kernel: scsi host9: SRP abort calledkernel: scsi host9: Null scmnd for RSP w/tag 0000000000000005 The...
View ArticleRe: MLNX_OFED_LINUX-1.5.3-3.0.0 kernel error.
Hi Ferber, We are using cm on IPoIB interfaces. Can we change buffer size in production environment and how to do that?Actually, Our environment has different QDR and FDR network and there are some bad...
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Re: Port 1 IB Port 2 Ethernet - ESXI 5.1 (5.5)
Unfortunatly, there is nothing to do that.I think this is derive from ESXi's compact hypervior contstructions.Therefore Mellanox must decide can't support some functions on compact ESXi's hypervior.
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Re: MLNX_OFED_LINUX-1.5.3-3.0.0 kernel error.
Hi, It can be done by creating a conf file under /etc/modprobe.d/ and specifying the ring buffer value that you'd like to use. for example : /etc/modprobe.d/ib_ipoib.conf :options ib_ipoib...
View ArticleIntroducing Mellanox Quantum Plugin
Hi all, Mellanox Technologies, in our support of Openstack, is releasing the Mellanox Quantum Plugin. This is following our previous announcement of Cinder Transport Acceleration via iSER (iSCSI over...
View ArticleMellanox VSA for Hyper-V
Late in 2012, Mellanox "promised" to have a Virtual Storage Appliance (VSA) for Hyper-V in 2013. Is this VSA close to being released? Where can I download a beta?
View ArticleNetwork Direct Programmers Guide from Microsoft
Great resource for Windows Development: http://msdn.microsoft.com/en-us/library/cc904397%28v=vs.85%29.aspx
View ArticleA few questions about InfiniBand cards
Dear All: I set up two servers are interconnected, one of which is Windows 7(64 bits) operating system, the other is Windows Server 2008-R2(64 bits). My question is as follows: 1. In sock...
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