--- Comment #15 from nmm1 at cam dot ac dot uk 2009-11-10 21:49 ---
It's come back again. The more that it does that, the more that I am convinced
that it is something horrible in thread management, perhaps a symbol clash,
race
condition or overwriting, and the root cause might
--- Comment #13 from nmm1 at cam dot ac dot uk 2009-11-10 13:32 ---
Oh, joy. This went soft yesterday, and today I can't repeat the effects.
I have some of the evidence in Email I sent to the ACML expert, who has
managed to repeat them at least once. But, at BEST, the effects se
--- Comment #12 from nmm1 at cam dot ac dot uk 2009-11-07 23:33 ---
Subject: Re: gfortran -fopenp and ACML_MP seem incompatible
On Nov 7 2009, burnus at gcc dot gnu dot org wrote:
>
> --- Comment #11 from burnus at gcc dot gnu dot org 2009-11-07 22:19
> --- Which v
--- Comment #10 from nmm1 at cam dot ac dot uk 2009-11-07 19:15 ---
Subject: Re: gfortran -fopenp and ACML_MP seem incompatible
On Nov 7 2009, kargl at gcc dot gnu dot org wrote:
>
>OpenMP clearly helps the 'Coded Cholesky time', but it
>causes a factor of 10 degrad
--- Comment #8 from nmm1 at cam dot ac dot uk 2009-11-07 18:56 ---
Subject: Re: gfortran -fopenp and ACML_MP seem incompatible
On Nov 7 2009, rguenth at gcc dot gnu dot org wrote:
>
> --- Comment #7 from rguenth at gcc dot gnu dot org 2009-11-07 18:40
> --- I suspec
--- Comment #6 from nmm1 at cam dot ac dot uk 2009-11-07 18:29 ---
Subject: Re: gfortran -fopenp and ACML_MP seem incompatible
No, but I will try to find it. It is definitely a closed source library,
and was written by NAG for AMD under contract. I quite agree that the bug
could be
--- Comment #4 from nmm1 at cam dot ac dot uk 2009-11-07 17:48 ---
Sorry - there's no need to send you the data file - I can send the programs
I use to generate it, which are very short. I have done so. To run these,
compile them into binaries of the same name with almost any op
--- Comment #3 from nmm1 at cam dot ac dot uk 2009-11-07 17:46 ---
Created an attachment (id=18990)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18990&action=view)
The second half of the generation code
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41977
--- Comment #2 from nmm1 at cam dot ac dot uk 2009-11-07 17:46 ---
Created an attachment (id=18989)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18989&action=view)
The first half of the data generation code
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41977
--- Comment #1 from nmm1 at cam dot ac dot uk 2009-11-07 17:44 ---
Created an attachment (id=18988)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18988&action=view)
The source of the failing program
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41977
ty: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: nmm1 at cam dot ac dot uk
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41977
--- Comment #2 from nmm1 at cam dot ac dot uk 2009-05-11 17:17 ---
I have now found a SECOND set of instructions on how to report a bug in gcc
upc.
I will copy this to http://www.intrepid.com/upc/bugs.html. Please just cancel
this report if this is the wrong place.
--
http
at cam dot ac dot uk
GCC build triplet: All
GCC host triplet: All
GCC target triplet: All
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40104
--- Comment #5 from nmm1 at cam dot ac dot uk 2007-11-12 18:58 ---
To Andrew Pinski: nothing - it was one of the first things I tried.
To [EMAIL PROTECTED]: PLEASE don't try to follow Annex G - that is about as
broken as it is possible to be; I use it as a horrible example
--- Comment #2 from nmm1 at cam dot ac dot uk 2007-11-12 14:25 ---
Well, yes and no. I am sorry, but that reply has raised several separate
points, so there is a threat of a thread split.
1) It is vaguely related to PR323, yes, but not simply. What I was saying
could
be considered is
should be small
is actually infinite!
--
Summary: Poor behaviour of complex division in 64-bit on Intel
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: nmm1 at cam dot ac dot uk
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34071
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