Using a Dell Switch in a cluster? What type of cluster is this? Tony Costa [EMAIL PROTECTED]
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, December 12, 2007 12:00 PM To: [email protected] Subject: bblisa Digest, Vol 49, Issue 4 Send bblisa mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://www.bblisa.org/mailman/listinfo/bblisa or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than "Re: Contents of bblisa digest..." Today's Topics: 1. GigE and 100 Base T Ethernet? (Scott Ehrlich) 2. Re: GigE and 100 Base T Ethernet? (Nicholas Kathmann) 3. RE: GigE and 100 Base T Ethernet? (Rudie, Tony) 4. RE: GigE and 100 Base T Ethernet? (David Allan) 5. BBLISA LinkedIn group (Tom Metro) 6. Who broke audacity? (Scott Ehrlich) 7. sound problem fixed! (Scott Ehrlich) ---------------------------------------------------------------------- Message: 1 Date: Tue, 11 Dec 2007 13:50:06 -0500 (EST) From: Scott Ehrlich <[EMAIL PROTECTED]> Subject: [BBLISA] GigE and 100 Base T Ethernet? To: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed I am working on a quote for a cluster, including a GigE switch. I have Belden IBDN AX350064 Gigaflex patch cables in hand. Would this cable be suitable, or is there better Ethernet cable I should use for a GigE cluster? I've priced a Dell PowerConnect 2724 switch. Thanks for insight. Scott ------------------------------ Message: 2 Date: Tue, 11 Dec 2007 14:13:26 -0500 From: Nicholas Kathmann <[EMAIL PROTECTED]> Subject: Re: [BBLISA] GigE and 100 Base T Ethernet? To: Scott Ehrlich <[EMAIL PROTECTED]> Cc: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Any CAT5E patch cable should be fine (I'm not sure you can even find CAT5 cables anymore). I've worked with companies with 5000+ copper GB patch cables, and haven't seen any buy a special or extra expensive cable (well other than X-over cables). For my own network, I have zero errors on any GB copper port with the last clear counters having been 380 days ago using CAT5E patch cables. You can get really cheap CAT5E patch cables from Graybar, who has a warehouse near the Boston Herald on Harrison Ave (South End / Chinatown area). With a corporate account they can get as cheap as $1.95 a cable. As far as I know, 10GB links are all fiber. Thanks, Nick Scott Ehrlich wrote: > I am working on a quote for a cluster, including a GigE switch. > > I have Belden IBDN AX350064 Gigaflex patch cables in hand. Would this > cable be suitable, or is there better Ethernet cable I should use for > a GigE cluster? I've priced a Dell PowerConnect 2724 switch. > > Thanks for insight. > > Scott > > _______________________________________________ > bblisa mailing list > [email protected] > http://www.bblisa.org/mailman/listinfo/bblisa > > ------------------------------ Message: 3 Date: Tue, 11 Dec 2007 14:36:40 -0500 From: "Rudie, Tony" <[EMAIL PROTECTED]> Subject: RE: [BBLISA] GigE and 100 Base T Ethernet? To: "Nicholas Kathmann" <[EMAIL PROTECTED]>, "Scott Ehrlich" <[EMAIL PROTECTED]> Cc: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-1" > Nick Says: > (well other than X-over cables). Make sure the XO cables are a different color! (horror story omitted...) > far as I know, 10GB links are all fiber. I think CX4 cables are copper, but not UTP. HP calls them "twinax". Anyway, quite specialized. CX4 connector (NOT rj45) and 15M max len. - Tony Rudii ------------------------------ Message: 4 Date: Tue, 11 Dec 2007 15:18:24 -0500 (EST) From: David Allan <[EMAIL PROTECTED]> Subject: RE: [BBLISA] GigE and 100 Base T Ethernet? To: "Rudie, Tony" <[EMAIL PROTECTED]> Cc: Scott Ehrlich <[EMAIL PROTECTED]>, [email protected], Nicholas Kathmann <[EMAIL PROTECTED]> Message-ID: <[EMAIL PROTECTED]> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > I think CX4 cables are copper, but not UTP. HP calls them "twinax". > Anyway, quite specialized. CX4 connector (NOT rj45) and 15M max len. That's right. CX4s are copper, and they look totally different from RJ45. They are roughly the size and shape of a VGA cable, but there's a flat tongue with contacts on it that runs down the middle of the connector where the middle row of pins would be on VGA. Here's a picture: http://www.cablesondemand.com/images/products/NW-CX426MM000.jpg Dave ------------------------------ Message: 5 Date: Tue, 11 Dec 2007 19:01:27 -0500 From: Tom Metro <[EMAIL PROTECTED]> Subject: [BBLISA] BBLISA LinkedIn group To: L-bblisa <[email protected]> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed BBLISA now has a LinkedIn group. (If you're not familiar, LinkedIn is a social networking site for professionals.) Your direct LinkedIn network is supposed to consist of people that you've worked with before and can vouch for. In contrast, user group connections are like 2nd level contacts (people you know through other people). So networking via a user group broadens your network without violating that principle. To join, go to: http://www.linkedin.com/e/gis/45411/0F3ACD5E5B0A No one is pre-approved (which would have required uploading everyone's email address to LinkedIn), so you'll be told you have to wait for the group manager to approve your request. You don't have to do anything further - your request will be approved within a few days. -Tom -- Tom Metro Venture Logic, Newton, MA, USA "Enterprise solutions through open source." Professional Profile: http://tmetro.venturelogic.com/ ------------------------------ Message: 6 Date: Tue, 11 Dec 2007 20:02:21 -0500 (EST) From: Scott Ehrlich <[EMAIL PROTECTED]> Subject: [BBLISA] Who broke audacity? To: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed I use my Ubuntu Gutsy box for three main things - email via ssh, email via web, and preserving my cassette music collection via Audacity. Everything has been working flawlessly, until tonight. I'd last successfully recorded stuff two nights ago (Sunday), most of the day. But today, when I turned on my system, audacity didn't show the normal device it wants to record from (line 1). When I told it to record, it claimed the device was in use. After a couple rounds of broken record attempts did I realize the device options were not listed. I visited Edit > Preferences and discovered the playback and record drop-down lists were non-functional. I visited System > Preferences > Sound and tested audio. It worked fine. What happened to audacity? Did some apt-get or aptitude update package break something from Sunday night, the last time I think I may have updated stuff? I tried an aptitude reinstall audacity, and did an rm -rf ~/.audacity-data, but nothing helps. What happened? Thanks. Scott ------------------------------ Message: 7 Date: Wed, 12 Dec 2007 05:23:09 -0500 (EST) From: Scott Ehrlich <[EMAIL PROTECTED]> Subject: [BBLISA] sound problem fixed! To: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed I was reminded of lsof (as root to show more), a tool I've never really used, but knew of. That found pulseaudio. Once removed, and with a reboot, sound is back. Scott ------------------------------ _______________________________________________ bblisa mailing list [email protected] http://www.bblisa.org/mailman/listinfo/bblisa End of bblisa Digest, Vol 49, Issue 4 ************************************* _______________________________________________ bblisa mailing list [email protected] http://www.bblisa.org/mailman/listinfo/bblisa
