Re: Frequent TCP retransmissions with ConnectX-3 EN
I haven't tried the "options mlx4_core log_num_mgm_entry_size=-7" yet. However, I did upgrade my install OFED to 3.0-1.0.1 on all of my servers. No change. In my initial post, I mentioned that this...
View ArticleClik here to view.
What's the difference between MFA* and MFS* active fiber EDR cables ?
Hi, At mellanox.com ... products ... cables and transceivers .... bottom table MFA1A00-E005MLNX5m QSFP VPI EDR active fiberMFA1A00-E010MLNX10m QSFP VPI EDR active fiberMFA1A00-E015MLNX15m QSFP...
View ArticleRe: Firmware update failed
Hi Kai Ma, The MITAC_QDR PSID means that the HCA is an OEM/ODM card (I'm assuming manufactured by MITAC), MLNX_OFED only has fw for Mellanox GA PSID's (starting with MT_*)
View ArticleRe: What's the difference between MFA* and MFS* active fiber EDR cables ?
M is for Mellanox, not Multi-mode fiber. MFA the major family for Active Optics Cables (VCSELs)MFS is the major family for Active Optical Cables (Silicon photonics).
View Articleconnectx_port_config never finds devices or driver not loaded
I'm trying to get two new EDR cards, MCX456A-ECA_Ax and MCX455A-ECA_Ax, working for ethernet purposes. I've installed what seems to be the newest OFED stack,...
View ArticleRe: connectx_port_config never finds devices or driver not loaded
Hi Phil, connectx_port_config script doesn't support Connectx-4 , it only supports ConnectX-2, ConnectX-3, XonnectX-3 Pro. For connectx-4 please use the mlxconfig tool: for example: mst startmlxconfig...
View ArticleExtremely slow ethernet speed with ConnectX VPI card in EN mode.
I picked up a pair of ConnectX VPI cards along with CX4->SPF+ cable as a cost-effective way to get 10gigE for shared storage. I initially plugged them into an switch (gigE switch with 4 10gigE...
View ArticleClik here to view.
Re: connectx_port_config never finds devices or driver not loaded
Wow, that ended up being simple, once the command was at hand! Thanks for the help. Both cards now have appropriate ethernet ports ready for configuration. Phil
View ArticleClik here to view.
Re: Frequent TCP retransmissions with ConnectX-3 EN
Some more info. I changed: options mlx4_core log_num_mgm_entry_size=-1to: options mlx4_core log_num_mgm_entry_size=-7 in /etc/modprobe.d/mlnx.conf and restarted with "/etc/init.d/openibd restart"....
View ArticleClik here to view.
ib_write_bw, ib_read_bw and ib_send_bw told me "Conflicting CPU frequency...
When I run ib_write_bw, I got the error message as this: - RDMA_Write BW Test Dual-port : OFF Device : mlx4_0 Number of qps : 1 Transport type : IB...
View ArticleClik here to view.
Re: ib_write_bw, ib_read_bw and ib_send_bw told me "Conflicting CPU frequency...
Hi, To align the CPU frequencies to performance mode you can run this one liner, that way you can drop the -F flag : for CPUFREQ in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do [ -f...
View ArticleNeed Help for Huawei S2700 Switch
My friend ask me to find a layer 2 Huawei switch with 48 10/100Base-TX ethernet ports and 2 dual purpose 10/100/1000 or SFP. Someone advise me switches S2710-52P-SI-AC and S2710-52P-PWR-SI , does those...
View Article