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Re: 2.9.8 Build problems on Opteron (RHEL4)
From: |
John W. Eaton |
Subject: |
Re: 2.9.8 Build problems on Opteron (RHEL4) |
Date: |
Wed, 6 Sep 2006 09:14:56 -0400 |
On 6-Sep-2006, Fredrik Lingvall wrote:
| > | F77=gfortran CPPFLAGS="-I$HOME/work/OPTERON/usr/local/include"
| > | CFLAGS="-O3 -m64 -Wall -funroll-loops -march=opteron -mtune=opteron
| > | -pthread" CXXFLAGS="-I$HOME/work/OPTERON/usr/local/include -O3 -m64
| > | -Wall -funroll-loops -march=opteron -mtune=opteron -pthread"
| > | FFLAGS="-I$HOME/work/OPTERON/usr/local/include -O3 -m64 -Wall
| > | -funroll-loops -march=opteron -mtune=opteron -pthread"
| > | LDFLAGS="-L$HOME/work/OPTERON/usr/local/lib"
| > ./configure --enable-64
| > | --prefix=$HOME/work/OPTERON/usr/local
| > | --with-blas=$HOME/work/OPTERON/usr/local/lib/libBLAS.so
| > | --with-lapack=$HOME/work/OPTERON/usr/local/lib/libLAPACK.so
| >
| > Are you sure you want --enable-64? Did you note the warning
| > issued by
| > configure when you use it?
| >
| Yes and yes. I used gfortran from gcc 4.1.1 and Goto BLAS v 1.04 so I
| hope its OK. At
| least I do not get any core dumps or other errors.
Was your copy of Goto BLAS compiled such that it will use with 8-byte
integers for dimension and index values?
Also, I don't see a -fdefault-integer-8 option for gfortran.
To make Octave work properly with --enable-64, you must have 8-byte
integers for any dimension and index values used for numeric arrays.
As the warning said, this is still an EXPERIMENTAL option. It is a
work in progress. If the conditions above are not met, then there may
be mysterious failures, including incorrect results that could occur
with no warning.
| Yes the patch made 2.9.8 compile nicely. Seems to run fine too. Thanks!
| I did not get these errors on my 32-bit Gentoo laptop. Do you know why
| it failed on the 64-bit machine?
Because on all systems, nzmax in the MEX inteface is always an "int"
object, which is typically 4 bytes wide even on 64-bit systems, but on
64-bit systems with --enable-64, octave_idx_type is an 8-byte integer.
jwe