amber-developers: Amber 9 compilation error with ifort9.1 on Itanium2

From: Ray Luo <>
Date: Fri, 11 Aug 2006 17:03:12 -0700

Hi All,

Just tried to build amber9 with ifort9.1 on teragrid's Itanium2 cluster,
but got the following error message:

cpp -traditional -P -DMKL amoeba_adjust.f > _amoeba_adjust.f
ifort -c -w95 -ftz -O3 -IPF_fma -IPF_fp_relaxed -ip -FR -o
amoeba_adjust.o _amoeba_adjust.f
fortcom: Severe: **Internal compiler error: segmentation violation
signal raised** Please report this error along with the circumstances in
which it occurred in a Software Problem Report. Note: File and line
given may not be explicit cause of this error.
compilation aborted for _amoeba_adjust.f (code 3)

When I lowered the optimization from O3 to O2, it passed. Is this a
known problem?

All the best,

Ray Luo, Ph.D.
Department of Molecular Biology and Biochemistry
University of California, Irvine, CA 92697-3900
Office: (949)824-9528         Lab: (949)824-9562
Fax: (949)824-8551          e-mail:
Home page:
Received on Sun Aug 13 2006 - 06:07:17 PDT
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