On 18 Jun 2004, at 11:58 am, Prof Brian Ripley wrote:
Fine. The issue on gcc 3.4.0 is that if you compile
src/modules/lapack/dlamc.f without -ffloat-store it loops forever.
I suspect you need to compile it without optimization or with the
equivalent of -ffloat-store. It's a separate file in 1.9.1 to make this
easier/less penalty and configure sets -ffloat-store if g77 is detected.
LAPACK calls Fortran functions to try to force stores, and that worked on
versions of gcc <= 3.3.3 (and of course only machines with extended
registers like ix86 need the subterfuge).
From my reading of the Intel compiler documentation, the equivalent option for icc and ifort is -mp, so I'll have a go at that.
Tim
-- Dr Tim Cutts Informatics Systems Group Wellcome Trust Sanger Institute Hinxton, Cambridge, CB10 1SA, UK
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