On 07/20/10 07:42 PM, Peter Jeremy wrote:
On 2010-Jul-19 23:20:40 +0100, "Dr. David Kirkby"
wrote:
So if I understand you correctly,
SAGE_NUM_THREADS=10
would set 10 threads globally in Sage, but
SAGE_NUM_THREADS_ATLAS=1
would override the 10 to 1 (single threaded) for just ATLAS. Have I
On 2010-Jul-19 23:20:40 +0100, "Dr. David Kirkby"
wrote:
>> How about an extension to the standard environment variable parsing
>> so that SAGE_FOO_bar is equivalent to (and overrides) SAGE_FOO in
>> package 'bar' only? This allows variables to be overridden for
>> specific packages without havi
On 07/19/10 10:37 PM, Peter Jeremy wrote:
On 2010-Jul-17 08:52:49 +0100, "Dr. David Kirkby"
wrote:
I don't know if you have every written multi-threaded code, but it is
non-trivial and very easy to make a mistake. Experience shows me that those
mistakes show up on on one platform only. It's ha
On 2010-Jul-17 08:52:49 +0100, "Dr. David Kirkby"
wrote:
>I don't know if you have every written multi-threaded code, but it is
>non-trivial and very easy to make a mistake. Experience shows me that those
>mistakes show up on on one platform only. It's hard enough to track the bug if
>you wrot
On 07/17/10 07:20 AM, Martin Albrecht wrote:
How does this sound.
1) We add an environment variable SAGE_ATLAS_THREADS
2) If unset, then the behavior is unchanged, so we build an unthreaded
ATLAS. 3) If set to "auto":
$ export SAGE_ATLAS_THREADS=auto
then we let ATLAS automatically determine t
> How does this sound.
>
> 1) We add an environment variable SAGE_ATLAS_THREADS
> 2) If unset, then the behavior is unchanged, so we build an unthreaded
> ATLAS. 3) If set to "auto":
>
> $ export SAGE_ATLAS_THREADS=auto
>
> then we let ATLAS automatically determine the number of threads. (I thin
On Fri, Jul 16, 2010 at 4:34 PM, Dr. David Kirkby
wrote:
> How does this sound.
>
> 1) We add an environment variable SAGE_ATLAS_THREADS
> 2) If unset, then the behavior is unchanged, so we build an unthreaded
> ATLAS.
> 3) If set to "auto":
>
> $ export SAGE_ATLAS_THREADS=auto
>
> then we let ATL
Currently, when ATLAS builds in Sage, it uses this option to the configure
scrip, it used the option -t 0, which disables threading.
The comment in spkg-install-script says:
# -t 0: disable threading for now.
and we can see that actually happens.
../src/configure --prefix="$SAGE_LOCAL
