PGI User Forum

jurij · Joined: 03 Aug 2004 Posts: 1

Hi!

I am trying to compile one program package on the Opteron using pgf90 compiler. If the tp=k8-32 flag is used, everything is OK. But when the tp=k8-64 flag is used, two different linker warnings are displayed:
1.
usr/bin/ld: Warning: alignment 16 of symbol `pghpf_type_' in /usr/pgi/linux86/5.2/lib/libpgf902.a(const.o) is smaller than 32 in mc.o
2.
/usr/bin/ld: warning: i386:x86-64 architecture of input file `mc.o' is incompatible with i386 output
(and more similar messages as the second one for each f90 file)

There is one message of type 1 and several of type 2 (for each f90 file compiled).

The makefile used is given below:
-------------------------------------------
ARCH = LINUX

SER_DEFINES = -D$(ARCH)
CSER_DEFINES = -D$(ARCH)
PAR_DEFINES = -D$(ARCH) -D_PAR_
PAR2_DEFINES = -D$(ARCH) -D_PAR2_

SER_XLF = pgf90
SER_XLFLINK = $(SER_XLF) -Wl,-Bstatic
PAR_XLF = $(SER_XLF)
PAR_XLFLINK = mpif90 -Wl,-Bstatic
FOPT = -O3 -Mfree -tp=k8-64

FSERFLAG = $(SER_DEFINES) $(FOPT)
FPARFLAG = $(PAR_DEFINES) $(FOPT)
FPAR2FLAG = $(PAR2_DEFINES) $(FOPT)

XLC = cc
COPT = -O
CFLAG = $(CSER_DEFINES) $(COPT)
-------------------------------------------------

The fortran 90 code includes also some c statements for parallel executable generation:

#if defined (_PAR_)
f90 code
#else
f90 code
#endif

Using -m64 flag does not help.

Pure f90 programs compile smoothly using k8-64 flag and run considerably faster than their k8-32 generated counterparts.

The OS is Fedora Core 2 x86-64.

What flags should be used ?

Jurij

mkcolg

bob101 · Joined: 20 Jan 2005 Posts: 1

I'm having a similar problem...

/usr/bin/ld: warning: i386:x86-64 architecture of input file `/opt/mpich/lib/libmpich.a(dmpipk.o)' is incompatible with i386 output

file dmpipk.o (from MPICH-GM package)
dmpipk.o: ELF 64-bit LSB relocatable, AMD x86-64, version 1 (SYSV), not stripped

file dynm.o (from 3rd party)
dynm.o: ELF 64-bit LSB relocatable, AMD x86-64, version 1 (SYSV), not stripped

Any ideas?

mkcolg · Posted: Wed Feb 02, 2005 2:12 pm Post subject:

Hi Bob,

While you can create 32-bit executables on a AMD x86-64 using the "-tp k8-32" flag, you can not mix 32 and 64-bit objects. The objects in the libraries your using were compiled as 64-bit objects, so you may not use them to link with your 32-bit application. You must either re-compile your program as a 64-bit object (ie "-tp k8-64") or obtain 32-bit versions of these libraries.

Hope this helps,
Mat