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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Bart,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Particular card you were testing doesn’t
support 5 GT/s PCIe operation.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>There are other adaptors from the same
product family based on ConnectX silicon device that are capable of PCIe gen-2
(5GT/s) link speed. Please, contact your distributor for details.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Boris Shpolyansky</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Sr. Member of Technical Staff,
Applications</span></font><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy'>Mellanox Technologies
Inc.</span></font><font color=navy><span lang=FR style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy'>350 Oakmead Parkway,
Suite 100</span></font><font color=navy><span lang=FR style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
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color:navy'>Sunnyvale</span></font></st1:City><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>, <st1:State
w:st="on">CA</st1:State> <st1:PostalCode w:st="on">94085</st1:PostalCode></span></font></st1:place><font
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Tel.: (408) 916 0014</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Fax: (408) 585 0314</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Cell: (408) 834 9365</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
general-bounces@lists.openfabrics.org
[mailto:general-bounces@lists.openfabrics.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Bart Van Assche<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, March 09, 2009 11:48
AM<br>
<b><span style='font-weight:bold'>To:</span></b> general@lists.openfabrics.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [ofa-general] ***SPAM***
InfiniBand and PCIe 2.0</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hello,<br>
<br>
Although I'm not entirely sure this is the right mailing list for such
questions: can anyone give me some advice on how to get an InfiniBand HCA
working at 5 GT/s ? I have inserted a MT25418 HCA in a PCIe 2.0 slot. According
to Mellanox' documentation, the maximum transfer speed should be 5.0 GT/s.
lspci reports 2.5 GT/s for the link status however. The details are as follows:<br>
* MT25418 specs: <a
href="http://www.mellanox.com/content/pages.php?pg=products_dyn&product_family=36&menu_section=34">http://www.mellanox.com/content/pages.php?pg=products_dyn&product_family=36&menu_section=34</a><br>
* Kernel: Linux 2.6.28.7<br>
* Motherboard: Asus P5Q Deluxe<br>
* lspci output:<br>
<br>
01:00.0 InfiniBand: Mellanox Technologies MT25418 [ConnectX IB DDR, PCIe 2.0
2.5GT/s] (rev a0)<br>
Subsystem: Mellanox Technologies
MT25418 [ConnectX IB DDR, PCIe 2.0 2.5GT/s]<br>
Control: I/O- Mem+ BusMaster+
SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+<br>
Status: Cap+ 66MHz- UDF- FastB2B-
ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
INTx-<br>
Latency: 0, Cache Line Size: 32
bytes<br>
Interrupt: pin A routed to IRQ 16<br>
Region 0: Memory at fe700000
(64-bit, non-prefetchable) [size=1M]<br>
Region 2: Memory at cf800000
(64-bit, prefetchable) [size=8M]<br>
Region 4: Memory at fe6fe000
(64-bit, non-prefetchable) [size=8K]<br>
Capabilities: [40] Power Management
version 3<br>
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)<br>
Status: D0 PME-Enable- DSel=0 DScale=0 PME-<br>
Capabilities: [48] Vital Product
Data <?><br>
Capabilities: [9c] MSI-X: Enable+
Mask- TabSize=256<br>
Vector table: BAR=4 offset=00000000<br>
PBA: BAR=4 offset=00001000<br>
Capabilities: [60] Express (v2)
Endpoint, MSI 00<br>
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <64ns, L1 unlimited<br>
ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-<br>
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-<br>
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-<br>
MaxPayload 128 bytes, MaxReadReq 512 bytes<br>
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-<br>
LnkCap: Port #8, Speed 2.5GT/s, Width x8, ASPM L0s, Latency L0 unlimited, L1
unlimited<br>
ClockPM- Suprise- LLActRep- BwNot-<br>
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-<br>
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-<br>
LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk- DLActive- BWMgmt-
ABWMgmt-<br>
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+<br>
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-<br>
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable
De-emphasis: -6dB<br>
Transmit Margin: <st1:place w:st="on">Normal</st1:place> Operating Range,
EnterModifiedCompliance- ComplianceSOS-<br>
Compliance De-emphasis: -6dB<br>
LnkSta2: Current De-emphasis Level: -6dB<br>
Kernel driver in use: mlx4_core<br>
Kernel modules: mlx4_core<br>
<br clear=all>
Bart.<o:p></o:p></span></font></p>
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