Relocation truncated to fit: R_X86_64_PC32

Accelerated Computing HPC Compilers Legacy PGI Compilers
1

Hi,

I am compiling Fortran OpenMP code with -mcmodel=medium included on all compile and link lines But I still get ‘Relocation truncated to fit: R_X86_64_PC32’ errors:

ftn -m64 -fastsse -mp=nonuma -mcmodel=medium -o sph_tree_rk sph.o accrete_P.o addump.o angmom.o boundry.o cartdis.o cartmas.o cartpres.o cartvel.o chanref.o chekopt.o condense.o constan.o coriol.o cyldis.o cylmas.o cylpres.o cylvel.o dcooli_P_indiv.o densityi_P.o derivi_P.o endrun.o energ.o eospg.o error.o evol.o externf.o extract.o file.o forcei_P.o getneigh.o getcv.o get1overmu.o getkappa.o gforsa_P.o gforsn_P.o gforspt_P.o ghostp1.o ghostp2.o ghostp3.o ghostp11.o ghostp100.o gptall.o hcalc.o hdot_P.o header.o homexp.o indexx.o indexx2.o indexx3.o inform.o inopts.o insulate_TREE_P.o integs.o ktable.o labrun.o lunit_double.o mainop.o mesop.o modif.o mtree_P.o newrun.o options.o phoenix.o phoenix2.o place.o preset.o prout.o ran1.o rdump.o reduce.o revtree_P.o save.o scaling.o secmes.o setpart.o smoothd_P.o sphdis.o sphmas.o sphpres.o sphvel.o step_P_rk_dcool.o toten.o treef_P.o unifdis.o unit.o wdump.o wrinsph.o zzsun_f77_double1.o zzsun_f77_double2.o
/usr/lib64/libpthread.a(pthread_create.o): In function __nptl_setxid': /usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:945: relocation truncated to fit: R_X86_64_PC32 against symbol __xidcmd’ defined in COMMON section in /usr/lib64/libpthread.a(init.o)
/usr/lib64/libpthread.a(pthread_create.o): In function allocate_stack': /usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:429: relocation truncated to fit: R_X86_64_PC32 against symbol __static_tls_align_m1’ defined in COMMON section in /usr/lib64/libpthread.a(init.o)
/usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:435: relocation truncated to fit: R_X86_64_PC32 against symbol __static_tls_size' defined in COMMON section in /usr/lib64/libpthread.a(init.o) /usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:516: relocation truncated to fit: R_X86_64_PC32 against symbol __libc_multiple_threads_ptr’ defined in COMMON section in /usr/lib64/libpthread.a(pthread_create.o)
/usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:516: relocation truncated to fit: R_X86_64_PC32 against symbol __pthread_multiple_threads' defined in COMMON section in /usr/lib64/libpthread.a(vars.o) /usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:679: relocation truncated to fit: R_X86_64_PC32 against symbol __static_tls_size’ defined in COMMON section in /usr/lib64/libpthread.a(init.o)
/usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:332: relocation truncated to fit: R_X86_64_PC32 against symbol __static_tls_size' defined in COMMON section in /usr/lib64/libpthread.a(init.o) /usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:338: relocation truncated to fit: R_X86_64_PC32 against symbol __static_tls_align_m1’ defined in COMMON section in /usr/lib64/libpthread.a(init.o)
/usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:377: relocation truncated to fit: R_X86_64_PC32 against symbol __libc_multiple_threads_ptr' defined in COMMON section in /usr/lib64/libpthread.a(pthread_create.o) /usr/src/packages/BUILD/glibc-2.9/nptl/allocatestack.c:377: relocation truncated to fit: R_X86_64_PC32 against symbol __pthread_multiple_threads’ defined in COMMON section in /usr/lib64/libpthread.a(vars.o)
/usr/lib64/libpthread.a(pthread_create.o): In function `start_thread’:
/usr/src/packages/BUILD/glibc-2.9/nptl/pthread_create.c:244: additional relocation overflows omitted from the output
make: *** [sph_tree_rk] Error 2

Does it mean that the errors are caused with libpthread.a? Is PGI’s OpenMP implemented with glibc and pthreads? Does the libpthread.a need to build with -mcmodel=medium as well?

Thanks.

2

Hi yus,

Does it mean that the errors are caused with libpthread.a?

Yes. The medium memory model requires the use of shared libraries or static libraries built with position independent code (-fpic). In this case, you’re trying to link with a static, non-pic, pthread library.

Is PGI’s OpenMP implemented with glibc and pthreads?

Yes, pthreads is the traditional system threading model on POSIX based systems.

Does the libpthread.a need to build with -mcmodel=medium as well?

No, but does need to built with -fpic.

It appears that you may be compiling on a Cray system? Cray’s OS does not inlcude shared system libraries and hence, you can not use the medium memory model. However, do you need large static data (-mcmodel=medium) or can you change your arrays to be dynamically allocated (i.e. F90 allocate) and use the -Mlarge_array flag?

  • Mat