From: Alan Cook <acook-osxm6dDZNBBZx8iatJs59jGjJy/sRE9J@public.gmane.org>
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Unable to Connect Using Active Speed 2.5 Gbps and Active Width of 1
Date: Mon, 28 Mar 2011 19:26:46 +0000 (UTC) [thread overview]
Message-ID: <loom.20110328T212117-950@post.gmane.org> (raw)
In-Reply-To: 4D90DF38.1060407@dev.mellanox.co.il
Hal Rosenstock <hal@...> writes:
>
> LinkWidthEnabled is 1X or 4X and not just 1X. That's because there's no
> force_link_width option in OpenSM so I think the width you set is
> getting overwritten much like the speed was earlier until you discovered
> force_link_speed 0.
But I see LinkWidthActive set to 1X, which as I understood denoted the width
currently being used. If I set LinkWidthActive to 4X, I am able to transfer
just fine.
Also, I do see LinkWidthEnabled being changed from "1X" to "1X or 4X" (most
likely by OpenSM as you suggest), but only after the link is up and active.
I am able to transfer at 5 Gbps 1X and 10 Gbps 1X, just not 2.5 Gbps 1X.
>
> Also, is this b2b HCAs or is there a switch in the topology ?
>
It's b2b HCAs, no switch.
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2011-03-28 19:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-28 18:01 Unable to Connect Using Active Speed 2.5 Gbps and Active Width of 1 Alan Cook
[not found] ` <loom.20110328T194956-774-eS7Uydv5nfjZ+VzJOa5vwg@public.gmane.org>
2011-03-28 18:55 ` Hal Rosenstock
2011-03-28 19:07 ` Alan Cook
[not found] ` <loom.20110328T210350-244-eS7Uydv5nfjZ+VzJOa5vwg@public.gmane.org>
2011-03-28 19:19 ` Hal Rosenstock
2011-03-28 19:26 ` Alan Cook [this message]
[not found] ` <loom.20110328T212117-950-eS7Uydv5nfjZ+VzJOa5vwg@public.gmane.org>
2011-03-28 19:41 ` Jason Gunthorpe
2011-03-28 20:41 ` Alan Cook
[not found] ` <loom.20110328T220853-101-eS7Uydv5nfjZ+VzJOa5vwg@public.gmane.org>
2011-03-29 17:37 ` Hal Rosenstock
2011-03-29 18:01 ` Alan Cook
2011-03-28 20:18 ` Hal Rosenstock
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=loom.20110328T212117-950@post.gmane.org \
--to=acook-osxm6ddznbbzx8iatjs59jgjjy/sre9j@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox