Re: Slow 40G->10G Performance when Traffic Flows over MLAG IPL
Hi, Can you attach a basic topology diagram, showing the ports with the performance problem, and how they are connected?Are the inter-switch ports showing any discards or errors?Are the inter-switch...
View ArticleRe: ibv_post_send is slow in ping-pong
clock_gettime has its own overhead that need to be taken into calculations. What are your expectations?What are the the results of ib_read_lat/ib_write_lat/ib_send_lat on the systems connected...
View ArticleRe: Slow 40G->10G Performance when Traffic Flows over MLAG IPL
Hi, The issue has been resolved via support. The config was missing the following: interface port-channel 1 vlan map-priority 0 traffic-class 1dcb priority-flow-control priority 0 enable It may be...
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Re: Slow 40G->10G Performance when Traffic Flows over MLAG IPL
Great - thanks for the update.
View ArticleMellanox ConnectX2 quad Rate IB Mezz card stopped functioning on Dell M710 blade
These Mellanox ConnectX2 quad Rate IB Mezz cards have been working on our Dell HPCC cluster for the past 5 years without any problems (t was setup by Dell in the past). Apparently one of the cluster...
View ArticleRe: Win2016 Eth connetcx 3 cable unplugged
Have you changed the cable connectivity from Ethernet to InfiniBand or vice versa? if you did then cable link may disappear (known issue)Else, it looks though you may have a port type configuration...
View Article100G ethernet failing to load in kernel 3.17 (cx415A)
Hi, I am trying to up 100G Ethernet driver in RHEL with kernel 3.17. But it is not working 1. I have installed mlnx-en-3.3-1.0.0.0.tgz, because of that all our IB drivers are unloaded2. I have...
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NFS over RoCE Ubuntu 16.04 with latest OFED
I'm having trouble with NFS over RoCE on Ubuntu 16.04 using the latest OFED (MLNX_OFED_LINUX-3.3-1.0.4.0-ubuntu16.04-x86_64.tgz) Works with Inbox drivers (mostly) but not no much with latest OFEDI...
View ArticleChange mlx5 to Ethernet mode without mlxconfig
I'm doing some testing of various network technologies (Omini_path, iWARP, RoCE, ConnectX-3, ConnectX-4 and hopefully soon ConnectX-5) to find which fits our workload best. I'm writing a test suite...
View ArticleRe: FlexBoot linux IBoIP
IPoIB installation fails as RedHat/CentOS doesn't support it. Even if the IPoIB modules are integrated into the RAMFS, installation will not recognize ipoib device as suitable for installation
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Re: Does ConnectX-3 support header split?
Hello Jeff, Their isn't a simple answer to your question since it requires Development involvement, i suggest you open case internally at support@mellanox.com. Thank you.Cheers,.R
View ArticleRe: Mellanox ConnectX2 quad Rate IB Mezz card stopped functioning on Dell...
If this helps someone..I did not receive any reply from anyone, so I went ahead and replaced the faulty card with a similar one and it worked without further reconfiguration.
View ArticleRe: Mellanox eSwitchd issue on Openstack Kilo?
Hi all,I'm still working on this problem.Does anyone have the same problem or solution of this?Any suggestions are welcomed. I'm totally lost.
View ArticleRe: Mellanox eSwitchd issue on Openstack Kilo?
Hi Muneyoshi, My apologies for the late reply. If the problem is that ib0 is not up it usually means that the port is not connected to switch or another ib portIf executing “ifconfig ib0 up” will not...
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ib_write_bw error connecting to server with rdma_cm option
I am trying to run a ib_write_bw test with --rdma_cm(-R) option, the 2 hosts are connected to back to back with infiniband.I get an error connecting to server. One host has Waiting for client to...
View ArticleWindows Server 2016 Expected Speeds?
We have a mellanox connectx-3 NIC connected to a Mellanox 1012 12x40GE switch operating with Windows Server 2016. We've used the beta software driver provided by mellanox but can't seem to get...
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OpenMPI with MXM 32bit issue
We have the problem that after 2.147 billion messages, which is the range of an int32_t, we cannot receive any more messages. Compiling OpenMPI with the flag "--with-mxm=/path/to/mxm" causes this...
View ArticleRe: ib_write_bw error connecting to server with rdma_cm option
HiRak Kplease try to use the interface IP Address (mellanox interface ip) instead of the host name in the client side. Thanks,Talat
View Articlekrping (4.7 kernel version) crashing with mlx5_core (CX415A), it is passing...
Hi,I am trying to run krping code which I got from the below link on the Linux kernel 4.7GitHub - larrystevenwise/krping: Kernel Mode RDMA Ping with 4.7 kernel I can able to use mlx4 card (). But it...
View ArticleRe: ib_write_bw error connecting to server with rdma_cm option
talatb I get the same error with ip address, any other setup required?
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