Dear gold developers, Dear Ian, Being very happy when I read about the new fast linker, I tried to use it on the package I'm working with (1050229 lines C++, 649866 lines Fortran 90), together with our preferred toolchain of the Intel C++ and Fortran compiler.
For the linking step itself, I noticed a speedup beyond seven - from 28.67s to
4.01s (time utility in csh, real time) !!! (Actually, these numbers might be
somewhat optimistic: The package doesn't deal very much with namespaces...)
However, the program crashed with the message:
forrtl: severe (48): invalid argument to FORTRAN Run-Time Library
Image PC Routine Line Source
libirc.so 00002AD00D23F05A Unknown Unknown Unknown
Trying to boil down the problem to a small gold/C++/F90 test case, I wrote some
lines (see below), but instead of a crash I found some errors in the program
output - see the details section below.
Not being a linking expert, I assume the object code of fortran subroutines is
compatible to objects derived from C code. Am I wrong?
To have a fast linker that also supports C++/Fortran 90 hybrid programs would
be really helpful to me. For any bugfixes many thanks in advance,
Benedikt
===========================================
And now for the details: You will find
1) file list
2) Makefile
3/4) C++ test class source and header
5/6) Fortran test routine source and header
7) main routine in test.C
8) version strings of the compilers and linkers used
9) compile and run log using GNU ld (--> this output is what I expected!)
10) compile and run log using GNU gold
(--> search for "Hi guys..." strange,isn't it? I think it isn't just a C/F90
problem.)
===========================================
b...@node57:~/test/cxx_f90$ ls
Makefile TestClass.C TestClass.h fibo_cycle.F fortran_subs.h test.C
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$ cat *
# Makefile (GNU gold/Intel icpc/Intel ifort test case)
ifdef GOLD
USE_GOLD = 1
LD_PATH = /mnt/nobackup/bs/gold/bin
else
USE_GOLD = 0
LD_PATH = /usr/bin
endif
FC = ifort -O0
CXX = icpc -O0
LD = icpc -O0 -v -Qlocation,ld,$(LD_PATH)
.PHONY: versions check clean
versions:
$(CXX) --version
$(FC) --version
$(LD) --version
$(LD_PATH)/ld --version
check: test.bin
./test.bin
test.bin: test.o TestClass.o fibo_cycle.o
$(LD) -o $@ $^
test.o: CPPFLAGS = -DUSE_GOLD=$(USE_GOLD)
test.o: test.C TestClass.h Makefile
TestClass.o: TestClass.C TestClass.h fortran_subs.h
fibo_cycle.o: fibo_cycle.F
clean:
rm -fr *.o test.bin
# End of Makefile -----------------------------------------
/* TestClass.C (GNU gold/Intel icpc/Intel ifort test case) */
#include <iostream>
#include <iomanip>
#include "TestClass.h"
#include "fortran_subs.h"
TestClass::TestClass()
{
std::cout << "Hi guys..." << std::endl;
x = 0.0e0;
y = 1.0e0;
for (unsigned int i = 0; i < 3 ; i++){
fibo_cycle_(&z,&x,&y);
std::cout << "z = " << std::fixed << std::setw(20)
<< std::setprecision(17) << z << std::endl;
}
std::cout << "...done." << std::endl;
}
TestClass::~TestClass()
{
std::cout << "Ciao..." << std::endl;
}
/* End of TestClass.C ---------------------------------- */
/* TestClass.h (GNU gold/Intel icpc/Intel ifort test case) */
#ifndef _TESTCLASS_H
#define _TESTCLASS_H
class TestClass {
private:
double x,y,z;
public:
TestClass();
~TestClass();
};
#endif
/* End of TestClass.h ---------------------------------- */
c fibo_cycle.F (GNU gold/Intel icpc/Intel ifort test case)
SUBROUTINE fibo_cycle(Z,X,Y)
INTENT(OUT) Z
INTENT(INOUT) X,Y
DOUBLE PRECISION Z,X,Y,X_OLD
Z = X/Y;
X_OLD = X;
X = Y;
Y = Y + X_OLD;
RETURN
END SUBROUTINE fibo_cycle
c End of fibo_cycle.F ------------------------------------
/* fortran_subs.h (GNU gold/Intel icpc/Intel ifort test case) */
#ifndef _FORTRAN_SUBS_H
#define _FORTRAN_SUBS_H
extern "C" {
void fibo_cycle_(double* Z, double* X, double* Y);
}
#endif
/* End of fortran_subs.h ---------------------------------- */
/* test.C (GNU gold/Intel icpc/Intel ifort test case) */
#include <cstdio>
#include "TestClass.h"
int main()
{
#if USE_GOLD == 1
printf("Using gold\n");
#elif USE_GOLD == 0
printf("Using GNU ld\n");
#else
#error Please define USE_GOLD as 0 or 1
#endif
TestClass* tc = new TestClass();
delete tc;
printf("Byebye\n");
}
/* End of test.C ----------------------------------------*/
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$ make versions
icpc -O0 --version
icpc (ICC) 10.0 20070613
Copyright (C) 1985-2007 Intel Corporation. All rights reserved.
ifort -O0 --version
ifort (IFORT) 10.0 20070613
Copyright (C) 1985-2007 Intel Corporation. All rights reserved.
icpc -O0 -v -Qlocation,ld,/usr/bin --version
Version 10.0
/usr/bin/ld --version
GNU ld version 2.17 Debian GNU/Linux
Copyright 2005 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License. This program has absolutely no warranty.
b...@node57:~/test/cxx_f90$ /mnt/nobackup/bs/gold/bin/ld --version
GNU gold (GNU Binutils 2.19.1) 1.7
Copyright 2008 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$ echo x"$GOLD"x
xx
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$ make check
icpc -O0 -DUSE_GOLD=0 -c -o test.o test.C
icpc -O0 -c -o TestClass.o TestClass.C
ifort -O0 -c -o fibo_cycle.o fibo_cycle.F
icpc -O0 -v -Qlocation,ld,/usr/bin -o test.bin test.o TestClass.o fibo_cycle.o
Version 10.0
/usr/bin/ld /usr/lib64/crt1.o /usr/lib64/crti.o
/usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtbegin.o --eh-frame-hdr -dynamic-linker
/lib64/ld-linux-x86-64.so.2 -o test.bin test.o TestClass.o fibo_cycle.o
-L/mnt/software/qc_dualcore/intel/cce/10.0.025/lib
-L/usr/lib/gcc/x86_64-linux-gnu/4.1.2/ -L/usr/lib64 -Bstatic -limf -lsvml
-Bdynamic -lm -Bstatic -lipgo -Bdynamic -lstdc++ -Bstatic -lirc -Bdynamic
-lgcc_s -lgcc -lcxaguard -Bstatic -lirc -Bdynamic -lc -lgcc_s -lgcc -Bstatic
-lirc_s -Bdynamic -ldl -lc /usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtend.o
/usr/lib64/crtn.o
rm /tmp/icpcvPRyrPgnudirs
rm /tmp/icpcydPLBugnudirs
./test.bin
Using GNU ld
Hi guys...
z = 0.00000000000000000
z = 1.00000000000000000
z = 0.50000000000000000
...done.
Ciao...
Byebye
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$ make clean
rm -fr *.o test.bin
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$ GOLD=yes make test.bin
icpc -O0 -DUSE_GOLD=1 -c -o test.o test.C
icpc -O0 -c -o TestClass.o TestClass.C
ifort -O0 -c -o fibo_cycle.o fibo_cycle.F
icpc -O0 -v -Qlocation,ld,/mnt/nobackup/bs/gold/bin -o test.bin test.o
TestClass.o fibo_cycle.o
Version 10.0
/mnt/nobackup/bs/gold/bin/ld /usr/lib64/crt1.o /usr/lib64/crti.o
/usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtbegin.o --eh-frame-hdr -dynamic-linker
/lib64/ld-linux-x86-64.so.2 -o test.bin test.o TestClass.o fibo_cycle.o
-L/mnt/software/qc_dualcore/intel/cce/10.0.025/lib
-L/usr/lib/gcc/x86_64-linux-gnu/4.1.2/ -L/usr/lib64 -Bstatic -limf -lsvml
-Bdynamic -lm -Bstatic -lipgo -Bdynamic -lstdc++ -Bstatic -lirc -Bdynamic
-lgcc_s -lgcc -lcxaguard -Bstatic -lirc -Bdynamic -lc -lgcc_s -lgcc -Bstatic
-lirc_s -Bdynamic -ldl -lc /usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtend.o
/usr/lib64/crtn.o
rm /tmp/icpccwP0hPgnudirs
rm /tmp/icpcQD18Nugnudirs
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$
b...@node57:~/test/cxx_f90$ GOLD=yes make check
./test.bin
Using gold
Hi guys...
Hi guys... 0.00000000000000000
Hi guys... 1.00000000000000000
Hi guys... 0.50000000000000000
Hi guys...
Hi guys...
Using gold
b...@node57:~/test/cxx_f90$
bug_report.gold-icpc-ifort.tar.bz2
Description: application/bzip
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