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Subject: Re: [hwloc-users] Zero cache line size on Power7?
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2013-03-04 09:37:10


You should run hwloc-gather-topology with one parameter:
  hwloc-gather-topology foo
This should generate foo.tar.bz2

We don't explicitly check the number of parameters, we directly look at
$1. My bash makes $1 empty when not given, looks like your bash doesn't
accept that. The attached patch should fix the error.

Brice

Index: tests/linux/hwloc-gather-topology.in
===================================================================
--- tests/linux/hwloc-gather-topology.in (révision 5403)
+++ tests/linux/hwloc-gather-topology.in (copie de travail)
@@ -34,6 +34,11 @@
    echo " $0 /tmp/\$(uname -n)"
 }
 
+if test x$# = x0 ; then
+ usage
+ exit 1
+fi
+
 name="$1"; shift
 if [ -z "$name" -o x`echo $name | cut -c1` = x- ] ; then
   [ x$name != x -a x$name != x-h -a x$name != x--help ] && echo "Unrecognized option: $name"

Le 04/03/2013 14:47, Erik Schnetter a écrit :
> Brice
>
> bash-3.2$
> configs/sim-debug/scratch/build/hwloc/hwloc-1.7a1r5312/tests/linux/hwloc-gather-topology
> configs/sim-debug/scratch/build/hwloc/hwloc-1.7a1r5312/tests/linux/hwloc-gather-topology[37]:
> shift: bad number
>
> No tarball is generated.
>
> -erik
>
>
>
> On Wed, Feb 27, 2013 at 5:19 PM, Brice Goglin <Brice.Goglin_at_[hidden]
> <mailto:Brice.Goglin_at_[hidden]>> wrote:
>
> 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 name) has type "data" depth 1
>> size 32768 linesize 128 associativity 8 stride 4096
>> Cache (unknown name) has type "unified" depth 2
>> size 262144 linesize 0 associativity 8 stride 32768
>>
>> -erik
>>
>> --
>> Erik Schnetter <schnetter_at_[hidden] <mailto:schnetter_at_[hidden]>>
>> http://www.perimeterinstitute.ca/personal/eschnetter/
>>
>>
>> _______________________________________________
>> hwloc-users mailing list
>> hwloc-users_at_[hidden] <mailto:hwloc-users_at_[hidden]>
>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users
>
>
> _______________________________________________
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> hwloc-users_at_[hidden] <mailto:hwloc-users_at_[hidden]>
> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users
>
>
>
>
> --
> Erik Schnetter <schnetter_at_[hidden] <mailto:schnetter_at_[hidden]>>
> http://www.perimeterinstitute.ca/personal/eschnetter/
>
>
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