* Automatic Parallelization fail
@ 2011-12-08 14:47 LAMOME Julien CS-SI
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From: LAMOME Julien CS-SI @ 2011-12-08 14:47 UTC (permalink / raw)
To: gcc-help
Hi !
I try to use the automatic parellilazion with the last (4.6.2) gcc version. I use this « tuto » http://openwall.info/wiki/internal/gcc-local-build for building gcc and tools.
I compile with :
my-gcc loop.c -o loop -fopenmp -floop-parallelize-all -ftree-parallelize-loops=8 -fdump-tree-parloops-details -lpthread
When I launch my "loop", I have only one processor used.
If I add a "#pragma " directive (for use explicitely OpenMP), I have some processors used.
In test-c-117t.parloops, loop 5 and 7are not noted "loop is not parallel according to graphite", so I think they could be parallelized ?
Thank for your help
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