On 1/28/2011 11:03 AM, Wilfredo Sifuentes wrote:
Dear all,
In spite that some information on the WWW says that the SUM intrinsic
function of Fortran 90 can be parallelizable, I found that gfortran
4.5 do not parallelize the following line (even if I fix or change
“AHID” variable to “1” ):
temporal= SUM(PERLIN(1:NLIN,AHID,1:NETP,1:NBLO))
Where PERLIN is defined as: REAL*8 PERLIN(MAXLIN,0:1,MAXETP,MAXBLO).
The compiler report: “note: not vectorized: unsupported use in stmt.”
Am I missing something?
Regards
Wilfredo
I don't remember the diagnostic, but SUM vectorization would never occur
without options implying -fassociative-math (unfortunately, specifying
that one by itself doesn't help; -ffast-math does, but is too big a hammer).
Even beyond that, more information from you may be useful.
--
Tim Prince
