[MITgcm-support] LOOP WAS VECTORIZED

[q li]

Hi all,

Recently I am using the MITgcm at a cluster with AMD64 cpu, together with ifort 
(9.1.040) and mpich (2.1.2). I received a message called "remark: LOOP WAS 
VECTORIZED". I googled "MITgcm remark: LOOP WAS VECTORIZED" and nothing feeds 
back. I am wondering if any MITgcmer had this problem. Then I keep searching and 
found someone said this is related to "optimization switches", then he suggest 
to add "-ftz -ip -ipo -parallel -axP " (see 
http://lists.apple.com/archives/fortran-dev/2006/Apr/msg00035.html). It does not 
show these "remark" messages immediately, but they show up together in the end 
of "make". I do the internal wave test in both way. The results "look" fine and 
exactly same.

My question is
(1) Are these "remark" messages a warning or error? Will they influence my 
calculation?

(2) Any way to avoid it?

(3) Is any special setting for me to use Intel's ifort on a AMD64 cluster?

$ mpif77 -w95 -W0 -WB -convert big_endian -assume byterecl -fPIC  -O2 -align -xW 
-ip -c chksum_tiled.f
chksum_tiled.f(722) : (col. 9) remark: LOOP WAS VECTORIZED.
chksum_tiled.f(733) : (col. 9) remark: LOOP WAS VECTORIZED.

$ mpif77 -w95 -W0 -WB -convert big_endian -assume byterecl -fPIC  -O2 -align -xW 
-ip -c -ftz -ip -ipo -parallel -axP chksum_tiled.f

Regards,

Li


      
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