[hwloc-users] Migrating www.open-mpi.org

All -- Our hosting provider will be migrating www.open-mpi.org to a new machine on Wednesday. See message below for details. Begin forwarded message: From: DongInn Kim > Subject: Migrating

[hwloc-users] hwloc problem on SGI machine

Jeff Becker (CC'ed) reported to me a failure with hwloc 1.7.2 (in OMPI trunk). I had him verify this with a standalone hwloc 1.7.2, and then had him try standalone hwloc 1.8 as well -- all got the same failure. Here's what he's seeing in 1.7.2: $ lstopo Different OS indexes lstopo:

Re: [hwloc-users] CPU info on ARM

I passed this on to my OMPI ARM contact (Leif Lindholm). Here's what he said: "It gets a bit trickier on ARM... since we may also have (implementation time) configurable cache sizes and also big.LITTLE (different processor models executing in the same SMP system)." He passed the

Re: [hwloc-users] Using hwloc to detect Hard Disks

On Aug 28, 2014, at 7:27 PM, Samuel Thibault wrote: >> I am not able to figure out how to read Hard drive details, for e.g., >> the content provided by hdparm application. >> >> My first question is, is it possible to read this using hwloc? If yes, can >> anyone direct

Re: [hwloc-users] Selecting real cores vs HT cores

I'm not sure you're asking a well-formed question. When the BIOS is set to enable hyper threading, then several resources on the core are split when the machine is booted up (e.g., some of the queue depths for various processing units in the core are half the length that they are when

Re: [hwloc-users] Selecting real cores vs HT cores

On Dec 11, 2014, at 2:03 PM, Brice Goglin wrote: > By the way, if you can't in the BIOS, you may want to disable the > hyperthread in the kernel: > > for i in $(hwloc-calc --whole-system --po -I pu core:all.pu:0) ; do echo 0 > > /sys/devices/system/cpu/cpu$i/online ;

Re: [hwloc-users] hello world can't run in Ubuntu 12.04

+1 Please try upgrading to Open MPI v1.8.x and see if that solves your problem. > On Apr 15, 2015, at 12:06 AM, Christopher Samuel > wrote: > > On 15/04/15 12:19, Li Li wrote: > >>I am installed openmpi 1.5 and test it with a simple program > > Umm, Open-MPI 1.5

Re: [hwloc-users] Hwloc command not working

Jeyaraj -- I think what we need is a bit more specific information in order to help you. Everyone's system is setup differently; we don't know how yours is setup. For example: - What version of hwloc did you install? - Where did you get the RPM for hwloc? - How exactly are you testing? - You

Re: [hwloc-users] Netloc feature suggestion

Don't forget that network topologies can also be complex -- it's not always a simple, single-path hierarchy. There can be multiple paths between any pair of hosts on the network. Sometimes the hosts are aware of the multiple paths, sometimes they are not (e.g., sometimes the fabric routing