On 13/07/2010 11:28 PM, Elton Carvalho wrote:
On Mon, Jul 12, 2010 at 9:29 PM, Mark Abraham<[email protected]> wrote:
On 13/07/10 08:20, Elton Carvalho wrote:
and edit line 26576 of ./config to read
LIBS="-lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core $LIBS"
instead of
LIBS="-lmkl $LIBS",
That seems like asking for trouble. Why not set the LIBS environment
variable properly before calling configure?
Because using "-lmkl" returns an error like "-lmkl not found", so, to
remove "-lmkl" from the configure I need to edit the line. That is
what earlier posts in this list (which the FAQ points to) recommends.
I would object to the form of that solution too.
./configure --with-fft=mkl LIBS="-L${MKL}/lib/em64t -lmkl_lapack
-lmkl_core -lmkl_em64t -lguide -lpthread" works for me, but you need the
right libs in the right order for your system. Clearly this kind of
solution works, is much less error-prone than editing configure output
by hand (which you'll never remember you did!), and gets documented in
the top of config.log.
You need to provide the support libraries in the right order. The MKL docs
for your platform should make the correct order clear.
Otherwise, since there's a nearly insignificant advantage to icc+mkl over
gcc+FFTW3, use the latter.
Thanks, I'll check the MKL docs, then (i have no idea why I haven't
done this yet). If all else fails, I'll go through icc + FFTW3.
Are there still problems with gcc 4.x?
gcc 4.1.x is still thought to have problems in some cases. Other gcc4
are generally fine.
Mark
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