I think I've seen cases where the device-tree contains 0 for such line
sizes.
I guess we should document that the line size is 0 means unknown.
Can you send the tarball generated by hwloc-gather-topology ? (send it
only to, in a private email)
Brice
Le 27/02/2013 23:11, Erik Schnetter a écrit
I am running hwloc 1.7a1r5312 on a Power7 architecture. I find there a
level 2 cache with a cacheline size of 0. Is this to be expected? The
documentation doesn't say that determining the cacheline size may fail.
I query the cache parameters from my application with these results:
Cache (unknown
I'll give that a try. Thanks Brice!
From: Brice Goglin mailto:brice.gog...@inria.fr>>
Reply-To: Hardware locality user list
mailto:hwloc-us...@open-mpi.org>>
List-Post: hwloc-users@lists.open-mpi.org
Date: Wed, 27 Feb 2013 22:08:48 +0100
To: mailto:hwloc-us...@open-mpi.org>>
Subject: Re: [hwloc-
Hello Rob,
That's exactly what set_area_membind() was meant for.
That said, you can only move entire pages (usually 4kbytes) to another
domain. So you can only move half of your array if you array is larger
than a single page.
You likely need something like this:
[... initialize the hwloc top
Hi,
I'm running OpenMP tests and I see a slow down going from 8 to 16 threads. I'm
suspecting that the arrays I'm using are all allocated on a single NUMA domain,
so that threads 9-15 encounter a slowdown when accessing those arrays, because
they have to cross domains. Suppose that I've alloc
