[Scipy-tickets] [SciPy] #678: scipy.test failure with mkl/cdft

SciPy Trac scipy-tickets@scipy....
Thu Feb 24 20:51:26 CST 2011


#678: scipy.test failure with mkl/cdft
-----------------------+----------------------------------------------------
 Reporter:  dstuebe    |       Owner:  cdavid     
     Type:  defect     |      Status:  accepted   
 Priority:  normal     |   Milestone:  Unscheduled
Component:  scipy.lib  |     Version:             
 Keywords:             |  
-----------------------+----------------------------------------------------

Comment(by cjgohlke):

 The ODR test failures disappear when changing the ifort optimization flag
 from O3 to O1. There are no apparent side effects: all other scipy tests
 still pass.

 The place to change this setting is in the
 IntelVisualFCompiler.get_flags_opt function in
 numpy/distutils/fcompiler/intel.py.

 From the ifort help:

 {{{
 /O1       optimize for maximum speed, but disable some optimizations which
           increase code size for a small speed benefit

 /O3       optimize for maximum speed and enable more aggressive
 optimizations
           that may not improve performance on some programs
 }}}

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/678#comment:6>
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