Re: Mersenne: mprime on a Dell PowerEdge
John R Pierce wrote: yeah, ugh. Well, the system came with 256MB of PC133 ECC registered SDRAM (2 * 128MB), I've fortified it with an additional 1GB of PC133 ECC registered SDRAM (4 * 256MB). I would *hope* any memory error would trip a ECC error. I thought ECC memory was supposed to Correct any errors and continue, not just detect them. cheers... Russ _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Mersenne: mprime on a Dell PowerEdge
Ugh. I think I mentioned I had a new PowerEdge 4400 server in my labs with dual 600MHz P3-XEON coppermines running on a ServerWorks chipset that has dual PC133 SDRAM busses? Well, I fired up mprime on it today, and running two concurrent instances, have gotten several ERROR: SUMOUT things, each time both processes checked out within a few minutes of each other. The CPUs are running cold as can be (that thing has massive cooling). I left it running a single instance to see if its a SMP issue... -jrp _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: mprime on a Dell PowerEdge
Fascinating (for me). How much memory do you have, and what is each XEON cache size? And (pleading ignorance) what OS are you running? Best Regards, Stefanovic John R Pierce wrote: Ugh. I think I mentioned I had a new PowerEdge 4400 server in my labs with dual 600MHz P3-XEON coppermines running on a ServerWorks chipset that has dual PC133 SDRAM busses? Well, I fired up mprime on it today, and running two concurrent instances, have gotten several ERROR: SUMOUT things, each time both processes checked out within a few minutes of each other. The CPUs are running cold as can be (that thing has massive cooling). I left it running a single instance to see if its a SMP issue... -jrp _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: mprime on a Dell PowerEdge
Stefanovic asks... Fascinating (for me). How much memory do you have, and what is each XEON cache size? And (pleading ignorance) what OS are you running? 1.2GB (!), 256k cache per ( :( the 0.18u coppermine xeons are only available this way), and RedHat Linux 6.1, special Dell SBE version. George says... What a shame. It could be a memory problem instead yeah, ugh. Well, the system came with 256MB of PC133 ECC registered SDRAM (2 * 128MB), I've fortified it with an additional 1GB of PC133 ECC registered SDRAM (4 * 256MB). I would *hope* any memory error would trip a ECC error. Tomorrow, I might pull the 1GB out and leave just the original 256MB to see what happens... Lets see whether a single instance runs all night... If it does, then I'm gonna have to suspect a cache coherency problem which is likely architectural, ugh. This machine uses the ServerWorks III LE chipset (formerly Reliance Computer Corporation, they make high end SMP server chipsets for Compaq, Dell, HP, SuperMicro and others). -jrp _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
Re: Mersenne: mprime on a Dell PowerEdge
If I had added the 1 Gig, and it wouldn't play I'd pull it. Sounds so gorgeous otherwise, it's just got to fly...arghhh. John R Pierce wrote: Stefanovic asks... Fascinating (for me). How much memory do you have, and what is each XEON cache size? And (pleading ignorance) what OS are you running? 1.2GB (!), 256k cache per ( :( the 0.18u coppermine xeons are only available this way), and RedHat Linux 6.1, special Dell SBE version. George says... What a shame. It could be a memory problem instead yeah, ugh. Well, the system came with 256MB of PC133 ECC registered SDRAM (2 * 128MB), I've fortified it with an additional 1GB of PC133 ECC registered SDRAM (4 * 256MB). I would *hope* any memory error would trip a ECC error. Tomorrow, I might pull the 1GB out and leave just the original 256MB to see what happens... Lets see whether a single instance runs all night... If it does, then I'm gonna have to suspect a cache coherency problem which is likely architectural, ugh. This machine uses the ServerWorks III LE chipset (formerly Reliance Computer Corporation, they make high end SMP server chipsets for Compaq, Dell, HP, SuperMicro and others). -jrp _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
RE: Mersenne: mprime on a Dell PowerEdge
yeah, ugh. Well, the system came with 256MB of PC133 ECC registered SDRAM (2 * 128MB), I've fortified it with an additional 1GB of PC133 ECC registered SDRAM (4 * 256MB). I would *hope* any memory error would trip a ECC error. Tomorrow, I might pull the 1GB out and leave just the original 256MB to see what happens... Lets see whether a single instance runs all night... If it does, then I'm gonna have to suspect a cache coherency problem which is likely architectural, ugh. This machine uses the ServerWorks III LE chipset (formerly Reliance Computer Corporation, they make high end SMP server chipsets for Compaq, Dell, HP, SuperMicro and others). Well, that'd be a shame if it was architectural. I had a chance to test out a Poweredge last year...just a quad PIII Xeon though, before the new chips were out. It performed admirably under NT and running 4 instances of NTPrime. I must say though, the Compaq 4 way "blew" it away (well, by a few percentage points) when running multiple instances on each CPU. I recently got some info on Compaq's new Proliant servers that'll be using the new CPU's... I'm under NDA, so I'm not 100% sure what info is already public and what isn't. :( I'm sure I can at least say that the new machines use the latest Xeon's, run at 133MHz FSB, use Compaq's own architecture, as always. They're avoiding the Intel chipset, and the Compaq rep had some funny stuff to say about Intel's chipsets... They have the latest 64 bit/66 MHz PCI slots, etc. etc. etc. Looking really good. I wouldn't mind getting my hands on one of the 8-way Proliant 8000/8500 boxes. With 4 CPU's and about 1GB or so, they're a steal at about $42,000...probably less through the other vendors. Let's see...what else...they'll support a lot more memory, 8 or 16GB I seem to recall... Of course, you'd need Windows 2000 to support that much. Anyway, expected release dates for those nice little boxes are from this month out to June for all the different models. Basically, they're revamping the entire Proliant (and workstation) lines to include support for 133MHz FSB and all the new chips. And what with the 820 and 840 chipsets being somewhat lousy, it's nice having Compaq's own stuff on there, so you get real SDRAM support and all the other goodies. Aaron _ Unsubscribe list info -- http://www.scruz.net/~luke/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
