Re: [Mpqc-users] reiserfs/md1/failure/threads
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
> >
> >
> >
> >
> >
> >
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