First I checked the HDs, reseeding dimms. OK. Then, because reiserfs 3.6 of my choice was unanimously considered inappropriate for amd64, I reinstalled amd64 Deabian etch with daily-build netinstall: primary partitions for boot, root, and swap, alongside logical partitions /usr, /var, tmp, /home, ext3 throughout.
Finally I run memtest86+ v1.65 booting it from CD as it is, without intervening on BIOS. With option "ECC OFF" for nearly eight hours (two full passes and a quarter) no memory error was detected. Then I discovered that Ctrl-c allows setting memtest86+ "ECC ON" while running. The test is now at merely 18% without errors. The reason for e-mail now is to ask if this is a correct procedure with memtest86+ for my eigth slots of Kingston ECC , 1GB each. I looked on internet but it was not clear. At any event, calculations with mpqc with Thread will probably be a more stringent test than present one. Thanks for advice on for-last paragraph. francesco On Thursday 20 July 2006 21:02, Matt Leininger wrote: > Francesco, > > I would recommend getting a cd with memtest on it and running that on > your machine for several hours. memtest is available on the Gentoo > Linux and Knoppix cd's. It may also be available on the Debian install > cd's - but I'm not sure. If memtest gets an error then one of your > system memory dimms is bad. I'd also recommend reseeding all your > dimms. > > - Matt > > On Tue, 2006-07-18 at 07:15 +0200, Francesco Pietra wrote: > > Because the matter is rather obscure to me, sent also CC to mpqc although > > it seems an exclusive problem of the OS. > > > > OS: Debian amd64 etch > > Hardw: Tyan S2895 K8WE; two 265 dual opteron; 8GB ram Kingston ECC; > > raid1; temperature cpu low throughout. > > > > Process: mpqc 2.3.1 calc b3lyp geom optimization MCsearch OO calculation > > for a large molecule, max_iterations = 40, memory = 5GB, launched as > > > > $mpqc -messagegrp "<ShmMessageGrp>:(n=4)" filename.in | tee filename.out > > > > all 40 iterations were completed in a couple of days, with "Optimization > > NOT converged". > > > > Restarted from the last minimum geometry, with memory = 7 GB, launched as > > > > $ mpqc -threadgrp "<PthreadThreadGrp>:(num_threads=4)" filename.in | tee > > filename.out > > > > calculation hanged after ca 11 hours with warnings: > > > > ReiserFS: md1: warning: vs-5150: searchby key: invalid format found in > > block 589839. Fsck? > > > > ReiserFS: md1: warning: vs-13070: reiserfs_read_locked_inode: i/o failure > > occurred during tryong to find stat data of [7109 7110 0x0 SD] > > > > ReiserFS: warning: is_tree_node: node level 0 does not match to the > > expected one 1. > > > > and several other similar warnings. > > > > Thanks for suggestions > > > > francesco > > > > > > > > > > > > > > ------------------------------------------------------------------------- > > Take Surveys. Earn Cash. Influence the Future of IT > > Join SourceForge.net's Techsay panel and you'll get the chance to share > > your opinions on IT & business topics through brief surveys -- and earn > > cash > > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > > _______________________________________________ > > Mpqc-users mailing list > > [EMAIL PROTECTED] > > https://lists.sourceforge.net/lists/listinfo/mpqc-users -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
