Well I am having trouble with finding any answers to this problem. I have a number of the ConnectX-2 c6100 mezzanine cards that I have set up and working wonderfully in Windows Server 2012 r2 but the links are running at half speed, Fore example, when running large block reads and writes to ram disks I reach 1.4GB/s. i have had other ConnectX-2 cards work at 3.2GB/s in the same nodes. When i open up the device manager I find that they are running at x4 not x8 speeds....I have 2.10 firmware loaded up on them and rdma is running fine. Here is a copy of the device manager log.
My Log
Driver Version : 4.60.17718.0
Firmware Version : 2.10.720
Port Number : 1
Bus Type : PCI-E 5.0 Gbps x4
Link Speed : ----
Part Number : 0JR3P1
Device Id : 26428
Revision Id : B0
Current MAC Address : 00-24-E8-FF-91-0C
Permanent MAC Address : 00-24-E8-FF-91-0C
Network Status : Disconnected
Adapter Friendly Name : Ethernet 3
IPv4 Address : 192.168.3.2
Adapter User Name : 0xffff-IPoIB
For referance here is the image from the main site posting showing x8 speeds
.
Just to let you know what i have tried and failed with so far.
-changed out the mezzanine riser pci-e extension piece
-I have used full size (non-mezzanine card) and it works at full speed.
-firmware up to date, and most current drivers installed
-bios up to date.
-card is plugged into a voltaire 4036 with up to date firmware
-shows up as x4 when unplugged and plugged in.
My Log
Driver Version : 4.60.17718.0
Firmware Version : 2.10.720
Port Number : 1
Bus Type : PCI-E 5.0 Gbps x4
Link Speed : ----
Part Number : 0JR3P1
Device Id : 26428
Revision Id : B0
Current MAC Address : 00-24-E8-FF-91-0C
Permanent MAC Address : 00-24-E8-FF-91-0C
Network Status : Disconnected
Adapter Friendly Name : Ethernet 3
IPv4 Address : 192.168.3.2
Adapter User Name : 0xffff-IPoIB
For referance here is the image from the main site posting showing x8 speeds
Just to let you know what i have tried and failed with so far.
-changed out the mezzanine riser pci-e extension piece
-I have used full size (non-mezzanine card) and it works at full speed.
-firmware up to date, and most current drivers installed
-bios up to date.
-card is plugged into a voltaire 4036 with up to date firmware
-shows up as x4 when unplugged and plugged in.
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