Andrey Novoseltsev wrote:
On Wed, Apr 16, 2014 at 3:15 AM, leif <[email protected]
<mailto:[email protected]>> wrote:
leif wrote:
Andrey Novoseltsev wrote:
On Tuesday, 15 April 2014 18:25:06 UTC-6, leif wrote:
./sage -f -c ecm
Thank you! It fails:
Hmmm, probably Debian have borked GCC (although I'd then expect more
doctests to fail).
Or maybe not (the latter).
Vanilla FSF GCC is currently in part borked as well on 62xx/63xx
Opterons (with AMD's XOP extensions), and since MPIR 2.6.0 doesn't
know these chips, and Debian's GCC is configured to produce plain
x86_64 code by default, GMP-ECM probably is the only Sage package
which runs into this, because it gets built with '-march=native'
(here bdver1) unless you set CFLAGS yourself.
You could (re)try
env CFLAGS="-O3 -march=bdver1 -mno-xop" ./sage -f -c ecm
(with Debian's gcc) and see whether the test suite failure vanishes.
That did fix it indeed! (And using Sage gcc didn't.) So - does it have
to be reported somewhere or we just need to wait till known bugs are
fixed in gcc?
Tracking this further down...
Would you mind retrying whether
env CFLAGS="-O3 -march=native -mtune=native" ./sage -f -c ecm
also works for you?
-leif
You might also test whether you get the same error(s) outside of
Sage,
with Debian's GCC (although we currently use vanilla upstream
GMP-ECM
6.4.4); it only needs GMP or MPIR (dev package with headers):
# [create some temporary directory and cd to it]
# If you don't have the development package of GMP installed:
# sudo apt-get install libgmp-dev
# (In case you don't have admin rights, it's also easy to
install
# it into some personal folder, e.g.:
# wget https://ftp.gnu.org/gnu/gmp/__gmp-6.0.0a.tar.xz
<https://ftp.gnu.org/gnu/gmp/gmp-6.0.0a.tar.xz>
# tar xf gmp-6.0.0a.tar.xz
# cd gmp-6.0.0
# ./configure --prefix=/path/to/install/__folder # e.g.
$HOME/local
# make && make check
# make install
# Similar for MPIR if you prefer that;
http://mpir.org/mpir-2.6.0.__tar.bz2
<http://mpir.org/mpir-2.6.0.tar.bz2> ;
# you'd in addition have to pass '--enable-gmpcompat' to
'configure'.)
wget
https://gforge.inria.fr/frs/__download.php/32159/ecm-6.4.4.__tar.gz
<https://gforge.inria.fr/frs/download.php/32159/ecm-6.4.4.tar.gz>
tar xf ecm-6.4.4.tar.gz
# Or, using the one from the Sage distro:
# tar xf $SAGE_ROOT/upstream/ecm-6.4.4.__tar.bz2
cd ecm-6.4.4
./configure --prefix=/some/temp/folder
# In case you have GMP (or MPIR with --enable-gmpcompat)
elsewhere:
# ./configure ... --with-gmp=/path/to/gmp-__install # e.g.
$HOME/local
make
make check
If that works, you could start playing with CFLAGS ('-O2', '-O3',
'-march=bdver1' etc.) in order to trigger/sort out the bug:
make clean
./configure ... CFLAGS="..." && make && make check
-leif
real 0m16.181s
user 0m10.052s
sys 0m5.064s
Successfully installed ecm-6.4.4
Running the test suite for ecm-6.4.4...
Now running GMP-ECM's test suite...
Making check in x86_64
make[1]: Entering directory
`/home/novoselt/sage/local/__var/tmp/sage/build/ecm-6.4.4/__src/x86_64'
make[1]: warning: -jN forced in submake: disabling jobserver
mode.
make[1]: Nothing to be done for `check'.
make[1]: Leaving directory
`/home/novoselt/sage/local/__var/tmp/sage/build/ecm-6.4.4/__src/x86_64'
make[1]: Entering directory
`/home/novoselt/sage/local/__var/tmp/sage/build/ecm-6.4.4/__src'
make[1]: warning: -jN forced in submake: disabling jobserver
mode.
make[1]: Leaving directory
`/home/novoselt/sage/local/__var/tmp/sage/build/ecm-6.4.4/__src'
./test.pp1 ./ecm
GMP-ECM 6.4.4 [configured with MPIR 2.6.0,
--enable-asm-redc] [P+1]
Input number is 328006342451 (12 digits)
Using B1=120, B2=8008, polynomial x^1, x0=5
Step 1 took 4ms
Step 2 took 0ms
********** Factor found in step 2: 328006342451
Found input number N
GMP-ECM 6.4.4 [configured with MPIR 2.6.0,
--enable-asm-redc] [P+1]
Input number is 328006342451 (12 digits)
Using B1=120, B2=8008, polynomial x^1, x0=262405073961
Step 1 took 0ms
Step 2 took 0ms
********** Factor found in step 2: 328006342451
Found input number N
GMP-ECM 6.4.4 [configured with MPIR 2.6.0,
--enable-asm-redc] [P+1]
Input number is 2050449218179969792522461197 (28 digits)
Using B1=20, B2=-1578-1248978, polynomial x^1, x0=6
Step 1 took 4ms
ecm: pm1fs2.c:1863: poly_from_sets_V: Assertion `set->elem[i] ==
-set->elem[c - 1L - i]' failed.
Aborted
############### ERROR ###############
Expected return code 14 but got 134
make: *** [check] Error 1
Error: GMP-ECM's test suite failed.
real 0m0.150s
user 0m0.080s
sys 0m0.036s
--
() The ASCII Ribbon Campaign
/\ Help Cure HTML E-Mail
--
You received this message because you are subscribed to the Google Groups
"sage-release" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-release.
For more options, visit https://groups.google.com/d/optout.
