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Re: 40GbE optimization and bandwidth testing

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have you tried turning TCP offload on the driver to OFF.

No, I'll give that a try.

But considering your connecting via windows mapped network, which uses CIFS, then thats your problem right there.  CIFS just cant carry that much data.

A member of the Servethehome forums has a ConnectX 20Gb IB card that does 2000MB/s using the mapped starwind drive method in Windows2008R2, with IPoIB. So I figured my brand new ConnectX-3 40GbE card would get at least that...

Im guesing your not using a 40Gb Mellanox managed switch either, as i believe there are many benefits to doing so, like collision management etc.

That might have something to do with it. I believe he had his card connected to a switch.

You need a SCSI transport like iSCSI and then connect windows using iscsi initiator over your IB IP network.  iSCSI on 20Gb Infiniband cards using firmware 2.7 and later get 1800MB/s read write over iSCSI on SCST Target.

My limited understanding of iSCSI targets is that they can only be accessed by one machine; is that correct? I'm a 3D Artist, not an IT Pro so I really have limited knowledge of these things. I use Maya for my work and it requires a project directory where it organizes the scene assets. Each scene references textures and geometry that have to be accessible in the same directory structure to all of the render slaves that will be working on the frames. Directory mapping is very convenient for this purpose. SCST may be fast but if it doesn't accomplish what my specific job requires then it's just not suitable.

Use ubuntu to setup SCST.  takes 30 mins.  no need to recompile teh kernel it works just as good without that.

I'm game to give linux a try, but Ubuntu has very limited support in 3D. I mostly use Autodesk and theFoundry products which are all RHL. It was always my intention to one day switch to CentOS.

Also make sure you use a LSI raid card or something better than mobo raid.

I have a brand new LSI 9271-8iCC


Re: sx1036 as IB-to IP gateway

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so, the answer is: with the right cables (40G to 4X10G) you can do that.

with 1036 you can get to up to 64 10GE ports.

 

work with this:

Snip20130503_1.png

 

as far as the above relationship with gateway functionality, at this point if you want to use gateway, you can only use ports 1-8 for Eth and the rest for IB. means, with splitter cables you can get now: 110Gb (2X4X10+3X10). all the rest are IB ports.

 

Thanks

Re: MHGH28-XTC firmware 2.9.1000 non-functional with ESXi 5.1?

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So.... (you are not going to like my answer ) - who ever i spoke with told me that for IB they stopped supporting ConnectX (revision 1). ConnectX2 and 3 are fully supported. sorry i don't have more details about the "why" but it is a fact that is going going to change anytime soon.

 

BTW, this is mentioned in the release notes for the driver.

Re: Confusion with Packet and Byte counters for RoCE over ConnectX-3

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currently whatever that is reported by ethtool (for standard Eth interface) is probably available.

Re: Confusion with Packet and Byte counters for RoCE over ConnectX-3

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Hi Yairi,

 

I am not sure I know what you mean...  ethtool does not reports counters for packets that have been sent or received via RDMA.

 

thanks,

Dan

Re: Confusion with Packet and Byte counters for RoCE over ConnectX-3

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you are correct. those are not going to know how many RoCE and how many other counters.

ethtool -S <ifname> will provide you with bytes, packets for Rx and Tx data.

 

for Infiniband case, things are the same - the counters pulled out from the silicon are packet counters and you can't really say to which ULP they associates.

Re: MHGH28-XTC firmware 2.9.1000 non-functional with ESXi 5.1?

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Thanks Yair Ifergan

 

It's no stress.  Honest and direct answers are the best.  Keep doing it.

 

Firmware up to 2.7.x works, so that'll just be the tradeoff people using ESX 5.x will need to work with.

MHGH28-XTC - Unable to update to 2.9.1000 from 2.7.0

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Hello all,

 

I have 4 of the MHGH28-XTC cards but I am unable to upgrade the firmware on one of them to 2.9.1000.

 

I get this error when I try to burn the firmware:

 

-E- Image burn Failed: Flash access failed: Flash write of 4096 bytes to address physical 0x10 failed: MFE_VERIFY_ERROR

 

I am wondering if the flash is damaged or corrupted on the card.

 

I've attached the command line prompts I used and card's info to the post.


Re: Suggestions for *quiet* Infiniband switch?

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Either there's different F-X430046 floating around or you have a odd definition of silent.

The one I got here runs constant 100% fan even at 18C ambient. Quite audible over a stock Norco 4224 from one room over.

Re: Suggestions for *quiet* Infiniband switch?

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artforz - Super glad you mentioned that.  Both that model Flextronic switch and the 9024D ones are similarly priced on eBay, with the Flextronic ones being a tad cheaper.  The 9024D ones can (from this thread) also run in fanless mode too, so now I'll probably go that way instead even though they're a little bit pricier.

 

(note - edited for typo fixes)

Re: MHGH28-XTC - Unable to update to 2.9.1000 from 2.7.0

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Looking at the firmware_fail.txt file, it seems to be complaining about write access to the flash.

 

Is there any chance it's something simple like not running the command from an Admin mode command shell?

 

Note, I'm a RHEL/CentOS/etc type of Linux guy, not so much of a Win guy these days, so my Win knowledge isn't very high.

Where can we download the Quagga (OpenEthernet) source code?

Re: Suggestions for *quiet* Infiniband switch?

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Interesting.

 

In the user manual for the switch (page 13 - Management tools) it lists IBADM as the tool for switch management.

 

It then states

Please visit the Mellanox website at www.mellanox.com for the latest release of the IBADM package.

 

The only links I have found to IBADM take me to the Mellanox support login page.

 

Anyhow, I shall see what I can do with finding out the firmware version as I do not have spark installed.  I will potentially be building some more Linux boxes soon and will take a closer look at that point.

Re: Suggestions for *quiet* Infiniband switch?

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Yeah, I've seen mention of the IBADM stuff in various (very old) docs too.

 

Kind of suspecting that may be what MFT used to be called.  Or perhaps that's the name of some other part of the previous generation management tools.  Yair Ifergan might know.

 

MFT isn't Linux only btw.  They have Windows and ESX downloads for it on that page too.

Re: Radware and Mellanox Technologies Combine Technology to Enable Mobile Carriers to Leverage Network Functions Virtualization (NFV) and Software Defined Networking (SDN) |


Re: Windows 2008r2 and SRP Miniport failing to start.

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Did you install MPIO on Windows Server 2008 R2?

I was experienced problem SRP with Windows MPIO module on same environment.

Re: SR-IOV on ESXi 5.1

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Hi, Ali!

 

I was also try Direct through attach configuration but fail.

When I was enabled Intel VT-d on my X8DTN+-FLR then vSphere unable recognize MHQH19-XTC.

 

But another MHQH29B-XTR was always ok!

 

Big problem is windows vm with QDR HCA (via Intel vt-d) was always BSOD and reboot continuously forever.

 

QDR HCA's firmware was 2.9.100 or 2.9.1200 (if available)

vSphere 5.1 update 1

VM hardware 9

 

I was read all aspects about vRDMA last years.

 

I think vRDMA is best choice and you'll be co work VMware...:)

 

SRP is very powerful protocol but have many problem for

extreme solid storage.

 

iSER is better choice for virtualized environment.

 

I was test SMB 3.0 on my personal lab with Windows server 2012. Performance was good but not a SAN feature and not a standard. That's a very funny for me....:)

 

 

Anyway....

I was drop SRP, IPoIB, Direct path-through with Intel VT-D.

 

If there is a vRDMA experimental project...

 

Do you have official plan?

It means co work with VMware that add a new vRDMA feature in ESXi hypervisor.

 

 

Re: MCQH29-XDR firmware for RDMA

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Actually, 2.10.720 is available for Mellanox branded ConnectX-2 cards.  It's part of the Windows Server 2012 OFED package.  During the install, if you have a supported card it will flash the firmware to the latest version.  Mellanox does not have the firmware available as a separate download.

 

Mellanox says it's up to the OEM to provide the updated firmware for their designed cards which is understandable as there are Dell, HP and IBM and who knows what else proprietary designed cards.  If I were Mellanox's shoes, I wouldn't want to be on the hook for cards not designed by my own company.

 

With that said, I have contacted Dell and brought the issue up.  It turns out the C6100 has not gone thru any kind of Windows 2012 testing and the engineers aren't even aware of the firmware issue regarding the mezzanine card.  They are looking into it but I could see it going both ways as far as support/providing a new firmware. Hopefully I will hear something this coming week.

 

In the meantime, I did acquire an MHQH29C-XTR which is Mellanox's own PCIe card that the Dell mezzanine card is based off of.  Just about everything is identical hardware wise, with the only difference is the part number and PSID burned into the EEPROM.  I was able to extract the 2.10.720 firmware out of the Server 2012 OFED package and posted up instructions on servethehome.com forums where someone was able to customize it, and successfully flash a Dell mezzanine card to 2.10.720.  RDMA shows as enabled now and we're just waiting for some further tests to see if it actually works.  Follow the thread here:  Dell C6100 and Windows Server 2012 no RDMA.

Any good guides to IB performance optimization?

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Most of the experience I have in IB performance optimization has been acquired ad-hoc and informally from other engineers, and I'm not aware of any good guides or starting points out there for a newbie. Does anyone have any good books or documentation they can suggest? Partly this is driven by wanting something to point new engineers at, and partly by wanting a good reference for myself...

Re: Any good guides to IB performance optimization?

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