Re: [Beowulf] NMI (Non maskable interrupts)

2008-03-18 Thread Steven Truong
On Mon, Mar 17, 2008 at 3:02 PM, Mark Hahn <[EMAIL PROTECTED]> wrote: > > From my understanding, NMI is not good since the processors really > > have to handle these interrupts right away and these might degrade the > > performance of the nodes. > > I think you're mistaken - NMI's of the sort yo

[Beowulf] NMI (Non maskable interrupts)

2008-03-17 Thread Steven Truong
Dear, all. We recently bought some dual quadcore AMD Barcelona nodes with Asus KFSN4-DRE motherboard and installed Rocks Cluster 4.3, CentOS 5.1 on these machines. What we found have irked us in terms of the number of NMI generated. #cat /proc/interrupts CPU0 CPU1 CPU2

Re: [Beowulf] Need recommendation for a new 512 core Linux cluster

2007-11-09 Thread Steven Truong
27;s from ExLudus (www.exludus.com) and might be worth > looking into. > > > Steven Truong wrote: > > Hi, all. I would like to know for that many cores, what kind of file > > system should we go with? Currently we have a couple of clusters with > > around 100 cores and N

[Beowulf] Need recommendation for a new 512 core Linux cluster

2007-11-07 Thread Steven Truong
Hi, all. I would like to know for that many cores, what kind of file system should we go with? Currently we have a couple of clusters with around 100 cores and NFS seems to be ok but not great. We definitely need to put in place a parallel file system for this new cluster and I do not know which