Siegmar, Oscar,
I suspect that the problem is calling mca_base_var_register
without initializing OPAL in JNI_OnLoad.
ompi/mpi/java/c/mpi_MPI.c:
----------------------------------------------------------------
jint JNI_OnLoad(JavaVM *vm, void *reserved)
{
libmpi = dlopen("libmpi." OPAL_DYN_LIB_SUFFIX, RTLD_NOW | RTLD_GLOBAL);
if(libmpi == NULL)
{
fprintf(stderr, "Java bindings failed to load liboshmem.\n");
exit(1);
}
mca_base_var_register("ompi", "mpi", "java", "eager",
"Java buffers eager size",
MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
OPAL_INFO_LVL_5,
MCA_BASE_VAR_SCOPE_READONLY,
&ompi_mpi_java_eager);
return JNI_VERSION_1_6;
}
----------------------------------------------------------------
I suppose JNI_OnLoad is the first function in the libmpi_java.so
which is called by JVM. So OPAL is not initialized yet.
As shown in Siegmar's JRE log, SEGV occurred in asprintf called
by mca_base_var_cache_files.
Siegmar's hs_err_pid13080.log:
----------------------------------------------------------------
siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR),
si_addr=0x0000000000000000
Stack: [0xffffffff7b400000,0xffffffff7b500000], sp=0xffffffff7b4fc730, free
space=1009k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libc.so.1+0x3c7f0] strlen+0x50
C [libc.so.1+0xaf640] vsnprintf+0x84
C [libc.so.1+0xaadb4] vasprintf+0x20
C [libc.so.1+0xaaf04] asprintf+0x28
C [libopen-pal.so.0.0.0+0xaf3cc] mca_base_var_cache_files+0x160
C [libopen-pal.so.0.0.0+0xaed90] mca_base_var_init+0x4e8
C [libopen-pal.so.0.0.0+0xb260c] register_variable+0x214
C [libopen-pal.so.0.0.0+0xb36a0] mca_base_var_register+0x104
C [libmpi_java.so.0.0.0+0x221e8] JNI_OnLoad+0x128
C [libjava.so+0x10860] Java_java_lang_ClassLoader_00024NativeLibrary_load+0xb8
j java.lang.ClassLoader$NativeLibrary.load(Ljava/lang/String;Z)V+-665819
j java.lang.ClassLoader$NativeLibrary.load(Ljava/lang/String;Z)V+0
j java.lang.ClassLoader.loadLibrary0(Ljava/lang/Class;Ljava/io/File;)Z+328
j java.lang.ClassLoader.loadLibrary(Ljava/lang/Class;Ljava/lang/String;Z)V+290
j java.lang.Runtime.loadLibrary0(Ljava/lang/Class;Ljava/lang/String;)V+54
j java.lang.System.loadLibrary(Ljava/lang/String;)V+7
j mpi.MPI.<clinit>()V+28
----------------------------------------------------------------
mca_base_var_cache_files passes opal_install_dirs.sysconfdir to
asprintf.
opal/mca/base/mca_base_var.c:
----------------------------------------------------------------
asprintf(&mca_base_var_files, "%s"OPAL_PATH_SEP".openmpi" OPAL_PATH_SEP
"mca-params.conf%c%s" OPAL_PATH_SEP "openmpi-mca-params.conf",
home, OPAL_ENV_SEP, opal_install_dirs.sysconfdir);
----------------------------------------------------------------
In this situation, opal_install_dirs.sysconfdir is still NULL.
I run a MPI Java program that only calls MPI.Init() and
MPI.Finalize() with MCA variable mpi_show_mca_params=1 on
Linux to confirm this. mca_base_param_files contains "(null)".
mpi_show_mca_params=1:
----------------------------------------------------------------
[ppc:12232]
mca_base_param_files=/home/rivis/.openmpi/mca-params.conf:(null)/openmpi-mca-params.conf
(default)
[ppc:12232]
mca_param_files=/home/rivis/.openmpi/mca-params.conf:(null)/openmpi-mca-params.conf
(default)
[ppc:12232]
mca_base_override_param_file=(null)/openmpi-mca-params-override.conf (default)
[ppc:12232] mca_base_suppress_override_warning=false (default)
[ppc:12232] mca_base_param_file_prefix= (default)
[ppc:12232]
mca_base_param_file_path=(null)/amca-param-sets:/home/rivis/src/mpisample
(default)
[ppc:12232] mca_base_param_file_path_force= (default)
[ppc:12232] mca_base_env_list= (default)
[ppc:12232] mca_base_env_list_delimiter=; (default)
[ppc:12232] mpi_java_eager=65536 (default)
(snip)
----------------------------------------------------------------
GNU libc sets "(null)" for asprintf(buf, "%s", NULL) but
Solaris libc raises SEGV for it. I think this is the difference
of Siegmar's runs on Linux and Solaris.
I think this mca_base_var_register should be moved to another
place or opal_init_util or something should be called before
this mca_base_var_register.
Thanks,
Takahiro
> Hi Gilles,
>
> thank you very much for the quick tutorial. Unfortunately I still
> can't get a backtrace.
>
> > You might need to configure with --enable-debug and add -g -O0
> > to your CFLAGS and LDFLAGS
> >
> > Then once you attach with gdb, you have to find the thread that is polling :
> > thread 1
> > bt
> > thread 2
> > bt
> > and so on until you find the good thread
> > If _dbg is a local variable, you need to select the right frame
> > before you can change the value :
> > get the frame number from bt (generally 1 under linux)
> > f <frame number>
> > set _dbg=0
> >
> > I hope this helps
>
> "--enable-debug" is one of my default options. Now I used the
> following command to configure Open MPI. I always start the
> build process in an empty directory and I always remove
> /usr/local/openmpi-1.9.0_64_gcc, before I install a new version.
>
> tyr openmpi-dev-124-g91e9686-SunOS.sparc.64_gcc 112 head config.log \
> | grep openmpi
> $ ../openmpi-dev-124-g91e9686/configure
> --prefix=/usr/local/openmpi-1.9.0_64_gcc
> --libdir=/usr/local/openmpi-1.9.0_64_gcc/lib64
> --with-jdk-bindir=/usr/local/jdk1.8.0/bin
> --with-jdk-headers=/usr/local/jdk1.8.0/include
> JAVA_HOME=/usr/local/jdk1.8.0
> LDFLAGS=-m64 -g -O0 CC=gcc CXX=g++ FC=gfortran
> CFLAGS=-m64 -D_REENTRANT -g -O0
> CXXFLAGS=-m64 FCFLAGS=-m64 CPP=cpp CXXCPP=cpp
> CPPFLAGS=-D_REENTRANT CXXCPPFLAGS=
> --enable-mpi-cxx --enable-cxx-exceptions --enable-mpi-java
> --enable-heterogeneous --enable-mpi-thread-multiple
> --with-threads=posix --with-hwloc=internal --without-verbs
> --with-wrapper-cflags=-std=c11 -m64 --enable-debug
> tyr openmpi-dev-124-g91e9686-SunOS.sparc.64_gcc 113
>
>
> "gbd" doesn't allow any backtrace for any thread.
>
> tyr java 124 /usr/local/gdb-7.6.1_64_gcc/bin/gdb
> GNU gdb (GDB) 7.6.1
> ...
> (gdb) attach 18876
> Attaching to process 18876
> [New process 18876]
> Retry #1:
> Retry #2:
> Retry #3:
> Retry #4:
> 0x7eadcb04 in ?? ()
> (gdb) info threads
> [New LWP 12]
> [New LWP 11]
> [New LWP 10]
> [New LWP 9]
> [New LWP 8]
> [New LWP 7]
> [New LWP 6]
> [New LWP 5]
> [New LWP 4]
> [New LWP 3]
> [New LWP 2]
> Id Target Id Frame
> 12 LWP 2 0x7eadc6b0 in ?? ()
> 11 LWP 3 0x7eadcbb8 in ?? ()
> 10 LWP 4 0x7eadcbb8 in ?? ()
> 9 LWP 5 0x7eadcbb8 in ?? ()
> 8 LWP 6 0x7eadcbb8 in ?? ()
> 7 LWP 7 0x7eadcbb8 in ?? ()
> 6 LWP 8 0x7ead8b0c in ?? ()
> 5 LWP 9 0x7eadcbb8 in ?? ()
> 4 LWP 10 0x7eadcbb8 in ?? ()
> 3 LWP 11 0x7eadcbb8 in ?? ()
> 2 LWP 12 0x7eadcbb8 in ?? ()
> * 1 LWP 1 0x7eadcb04 in ?? ()
> (gdb) thread 1
> [Switching to thread 1 (LWP 1)]
> #0 0x7eadcb04 in ?? ()
> (gdb) bt
> #0 0x7eadcb04 in ?? ()
> #1 0x7eaca12c in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 2
> [Switching to thread 2 (LWP 12)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac2638 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 3
> [Switching to thread 3 (LWP 11)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac25a8 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 4
> [Switching to thread 4 (LWP 10)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac2638 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 5
> [Switching to thread 5 (LWP 9)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac2638 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 6
> [Switching to thread 6 (LWP 8)]
> #0 0x7ead8b0c in ?? ()
> (gdb) bt
> #0 0x7ead8b0c in ?? ()
> #1 0x7eacbcb0 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 7
> [Switching to thread 7 (LWP 7)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac25a8 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 8
> [Switching to thread 8 (LWP 6)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac25a8 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 9
> [Switching to thread 9 (LWP 5)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac2638 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 10
> [Switching to thread 10 (LWP 4)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac25a8 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 11
> [Switching to thread 11 (LWP 3)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) bt
> #0 0x7eadcbb8 in ?? ()
> #1 0x7eac25a8 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb) thread 12
> [Switching to thread 12 (LWP 2)]
> #0 0x7eadc6b0 in ?? ()
> (gdb)
>
>
>
> I also tried to set _dbg in all available frames without success.
>
> (gdb) f 1
> #1 0x7eacb46c in ?? ()
> (gdb) set _dbg=0
> No symbol table is loaded. Use the "file" command.
> (gdb) symbol-file /usr/local/openmpi-1.9.0_64_gcc/lib64/libmpi_java.so
> Reading symbols from
> /export2/prog/SunOS_sparc/openmpi-1.9.0_64_gcc/lib64/libmpi_java.so.0.0.0...done.
> (gdb) f 1
> #1 0x7eacb46c in ?? ()
> (gdb) set _dbg=0
> No symbol "_dbg" in current context.
> (gdb) f 2
> #0 0x00000000 in ?? ()
> (gdb) set _dbg=0
> No symbol "_dbg" in current context.
> (gdb)
> ...
>
>
> With "list" I get source code from mpi_CartComm.c and not from mpi_MPI.c.
> If a switch threads, "list" continues in the old file.
>
> (gdb) thread 1
> [Switching to thread 1 (LWP 1)]
> #0 0x7eadcb04 in ?? ()
> (gdb) list 36
> 31 distributed under the License is distributed on an "AS IS" BASIS,
> 32 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
> implied.
> 33 See the License for the specific language governing permissions
> and
> 34 limitations under the License.
> 35 */
> 36 /*
> 37 * File : mpi_CartComm.c
> 38 * Headerfile : mpi_CartComm.h
> 39 * Author : Sung-Hoon Ko, Xinying Li
> 40 * Created : Thu Apr 9 12:22:15 1998
> (gdb) thread 2
> [Switching to thread 2 (LWP 12)]
> #0 0x7eadcbb8 in ?? ()
> (gdb) list
> 41 * Revision : $Revision: 1.6 $
> 42 * Updated : $Date: 2003/01/16 16:39:34 $
> 43 * Copyright: Northeast Parallel Architectures Center
> 44 * at Syracuse University 1998
> 45 */
> 46 #include "ompi_config.h"
> 47
> 48 #include <stdlib.h>
> 49 #ifdef HAVE_TARGETCONDITIONALS_H
> 50 #include <TargetConditionals.h>
> (gdb)
>
>
> Do you have any ideas, what's going wrong or if I must use a different
> symbol table?
>
>
> Kind regards
>
> Siegmar
>
>
>
>
> >
> > Gilles
> >
> >
> > Siegmar Gross <siegmar.gr...@informatik.hs-fulda.de> wrote:
> > >Hi Gilles,
> > >
> > >I changed _dbg to a static variable, so that it is visible in the
> > >library, but unfortunately still not in the symbol table.
> > >
> > >
> > >tyr java 419 nm /usr/local/openmpi-1.9.0_64_gcc/lib64/libmpi_java.so |
> > >grep -i _dbg
> > >[271] | 1249644| 4|OBJT |LOCL |0 |18 |_dbg.14258
> > >tyr java 420 /usr/local/gdb-7.6.1_64_gcc/bin/gdb
> > >GNU gdb (GDB) 7.6.1
> > >...
> > >(gdb) attach 13019
> > >Attaching to process 13019
> > >[New process 13019]
> > >Retry #1:
> > >Retry #2:
> > >Retry #3:
> > >Retry #4:
> > >0x7eadcb04 in ?? ()
> > >(gdb) symbol-file /usr/local/openmpi-1.9.0_64_gcc/lib64/libmpi_java.so
> > >Reading symbols from
> /export2/prog/SunOS_sparc/openmpi-1.9.0_64_gcc/lib64/libmpi_java.so.0.0.0...done.
> > >(gdb) set var _dbg.14258=0
> > >No symbol "_dbg" in current context.
> > >(gdb)
> > >
> > >
> > >Kind regards
> > >
> > >Siegmar
> > >
> > >
> > >
> > >
> > >> unfortunately I didn't get anything useful. It's probably my fault,
> > >> because I'm still not very familiar with gdb or any other debugger.
> > >> I did the following things.
> > >>
> > >>
> > >> 1st window:
> > >> -----------
> > >>
> > >> tyr java 174 setenv OMPI_ATTACH 1
> > >> tyr java 175 mpijavac InitFinalizeMain.java
> > >> warning: [path] bad path element
> > >> "/usr/local/openmpi-1.9.0_64_gcc/lib64/shmem.jar":
> > >> no such file or directory
> > >> 1 warning
> > >> tyr java 176 mpiexec -np 1 java InitFinalizeMain
> > >>
> > >>
> > >>
> > >> 2nd window:
> > >> -----------
> > >>
> > >> tyr java 379 ps -aef | grep java
> > >> noaccess 1345 1 0 May 22 ? 113:23 /usr/java/bin/java
> > >> -server -Xmx128m
> -XX:+UseParallelGC
> > >-XX:ParallelGCThreads=4
> > >> fd1026 3661 10753 0 14:09:12 pts/14 0:00 mpiexec -np 1 java
> > >> InitFinalizeMain
> > >> fd1026 3677 13371 0 14:16:55 pts/2 0:00 grep java
> > >> fd1026 3663 3661 0 14:09:12 pts/14 0:01 java -cp
> > >/home/fd1026/work/skripte/master/parallel/prog/mpi/java:/usr/local/jun
> > >> tyr java 380 /usr/local/gdb-7.6.1_64_gcc/bin/gdb
> > >> GNU gdb (GDB) 7.6.1
> > >> ...
> > >> (gdb) attach 3663
> > >> Attaching to process 3663
> > >> [New process 3663]
> > >> Retry #1:
> > >> Retry #2:
> > >> Retry #3:
> > >> Retry #4:
> > >> 0x7eadcb04 in ?? ()
> > >> (gdb) symbol-file /usr/local/openmpi-1.9.0_64_gcc/lib64/libmpi_java.so
> > >> Reading symbols from
> /export2/prog/SunOS_sparc/openmpi-1.9.0_64_gcc/lib64/libmpi_java.so.0.0.0...done.
> > >> (gdb) set var _dbg=0
> > >> No symbol "_dbg" in current context.
> > >> (gdb) set var JNI_OnLoad::_dbg=0
> > >> No symbol "_dbg" in specified context.
> > >> (gdb) set JNI_OnLoad::_dbg=0
> > >> No symbol "_dbg" in specified context.
> > >> (gdb) info threads
> > >> [New LWP 12]
> > >> [New LWP 11]
> > >> [New LWP 10]
> > >> [New LWP 9]
> > >> [New LWP 8]
> > >> [New LWP 7]
> > >> [New LWP 6]
> > >> [New LWP 5]
> > >> [New LWP 4]
> > >> [New LWP 3]
> > >> [New LWP 2]
> > >> Id Target Id Frame
> > >> 12 LWP 2 0x7eadc6b0 in ?? ()
> > >> 11 LWP 3 0x7eadcbb8 in ?? ()
> > >> 10 LWP 4 0x7eadcbb8 in ?? ()
> > >> 9 LWP 5 0x7eadcbb8 in ?? ()
> > >> 8 LWP 6 0x7eadcbb8 in ?? ()
> > >> 7 LWP 7 0x7eadcbb8 in ?? ()
> > >> 6 LWP 8 0x7ead8b0c in ?? ()
> > >> 5 LWP 9 0x7eadcbb8 in ?? ()
> > >> 4 LWP 10 0x7eadcbb8 in ?? ()
> > >> 3 LWP 11 0x7eadcbb8 in ?? ()
> > >> 2 LWP 12 0x7eadcbb8 in ?? ()
> > >> * 1 LWP 1 0x7eadcb04 in ?? ()
> > >> (gdb)
> > >>
> > >>
> > >>
> > >> It seems that "_dbg" is unknown and unavailable.
> > >>
> > >> tyr java 399 grep _dbg
> > >> /export2/src/openmpi-1.9/openmpi-dev-124-g91e9686/ompi/mpi/java/c/*
> > >> /export2/src/openmpi-1.9/openmpi-dev-124-g91e9686/ompi/mpi/java/c/mpi_MPI.c:
> > >> volatile
> int _dbg = 1;
> > >> /export2/src/openmpi-1.9/openmpi-dev-124-g91e9686/ompi/mpi/java/c/mpi_MPI.c:
> > >> while
> (_dbg) poll(NULL, 0, 1);
> > >> tyr java 400 nm /usr/local/openmpi-1.9.0_64_gcc/lib64/*.so | grep -i _dbg
> > >> tyr java 401 nm /usr/local/openmpi-1.9.0_64_gcc/lib64/*.so | grep -i
> > >> JNI_OnLoad
> > >> [1057] | 139688| 444|FUNC |GLOB |0 |11
> > >> |JNI_OnLoad
> > >> tyr java 402
> > >>
> > >>
> > >>
> > >> How can I set _dbg to zero to continue mpiexec? I also tried to
> > >> set a breakpoint for function JNI_OnLoad, but it seems, that the
> > >> function isn't called before SIGSEGV.
> > >>
> > >>
> > >> tyr java 177 unsetenv OMPI_ATTACH
> > >> tyr java 178 /usr/local/gdb-7.6.1_64_gcc/bin/gdb mpiexec
> > >> GNU gdb (GDB) 7.6.1
> > >> ...
> > >> (gdb) b mpi_MPI.c:JNI_OnLoad
> > >> No source file named mpi_MPI.c.
> > >> Make breakpoint pending on future shared library load? (y or [n]) y
> > >>
> > >> Breakpoint 1 (mpi_MPI.c:JNI_OnLoad) pending.
> > >> (gdb) run -np 1 java InitFinalizeMain
> > >> Starting program: /usr/local/openmpi-1.9.0_64_gcc/bin/mpiexec -np 1 java
> > >> InitFinalizeMain
> > >> [Thread debugging using libthread_db enabled]
> > >> [New Thread 1 (LWP 1)]
> > >> [New LWP 2 ]
> > >> #
> > >> # A fatal error has been detected by the Java Runtime Environment:
> > >> #
> > >> # SIGSEGV (0xb) at pc=0xffffffff7ea3c7f0, pid=3518, tid=2
> > >> ...
> > >>
> > >>
> > >>
> > >> tyr java 381 cat InitFinalizeMain.java
> > >> import mpi.*;
> > >>
> > >> public class InitFinalizeMain
> > >> {
> > >> public static void main (String args[]) throws MPIException
> > >> {
> > >> MPI.Init (args);
> > >> System.out.print ("Hello!\n");
> > >> MPI.Finalize ();
> > >> }
> > >> }
> > >>
> > >>
> > >> SIGSEGV happens in MPI.Init(args), because I can print a message
> > >> before I call the method.
> > >>
> > >> tyr java 192 unsetenv OMPI_ATTACH
> > >> tyr java 193 mpijavac InitFinalizeMain.java
> > >> tyr java 194 mpiexec -np 1 java InitFinalizeMain
> > >> Before MPI.Init()
> > >> #
> > >> # A fatal error has been detected by the Java Runtime Environment:
> > >> #
> > >> # SIGSEGV (0xb) at pc=0xffffffff7ea3c7f0, pid=3697, tid=2
> > >> ...
> > >>
> > >>
> > >>
> > >> Any ideas, how I can continue? I couldn't find a C function for
> > >> MPI.Init() in a C file. Do you know, which function is called first,
> > >> so that I can set a breakpoint? By the way, I get the same error
> > >> for Solaris 10 x86_64.
> > >>
> > >> tyr java 388 ssh sunpc1
> > >> ...
> > >> sunpc1 java 106 mpijavac InitFinalizeMain.java
> > >> sunpc1 java 107 uname -a
> > >> SunOS sunpc1 5.10 Generic_147441-21 i86pc i386 i86pc Solaris
> > >> sunpc1 java 108 isainfo -k
> > >> amd64
> > >> sunpc1 java 109 mpiexec -np 1 java InitFinalizeMain
> > >> #
> > >> # A fatal error has been detected by the Java Runtime Environment:
> > >> #
> > >> # SIGSEGV (0xb) at pc=0xfffffd7fff1d77f0, pid=20256, tid=2
> > >>
> > >>
> > >> Thank you very much for any help in advance.
> > >>
> > >> Kind regards
> > >>
> > >> Siegmar
> > >>
> > >>
> > >>
> > >> > thank you very much for your help.
> > >> >
> > >> > > how did you configure openmpi ? which java version did you use ?
> > >> > >
> > >> > > i just found a regression and you currently have to explicitly add
> > >> > > CFLAGS=-D_REENTRANT CPPFLAGS=-D_REENTRANT
> > >> > > to your configure command line
> > >> >
> > >> > I added "-D_REENTRANT" to my command.
> > >> >
> > >> > ../openmpi-dev-124-g91e9686/configure
> > >> > --prefix=/usr/local/openmpi-1.9.0_64_gcc \
> > >> > --libdir=/usr/local/openmpi-1.9.0_64_gcc/lib64 \
> > >> > --with-jdk-bindir=/usr/local/jdk1.8.0/bin \
> > >> > --with-jdk-headers=/usr/local/jdk1.8.0/include \
> > >> > JAVA_HOME=/usr/local/jdk1.8.0 \
> > >> > LDFLAGS="-m64" CC="gcc" CXX="g++" FC="gfortran" \
> > >> > CFLAGS="-m64 -D_REENTRANT" CXXFLAGS="-m64" FCFLAGS="-m64" \
> > >> > CPP="cpp" CXXCPP="cpp" \
> > >> > CPPFLAGS="-D_REENTRANT" CXXCPPFLAGS="" \
> > >> > --enable-mpi-cxx \
> > >> > --enable-cxx-exceptions \
> > >> > --enable-mpi-java \
> > >> > --enable-heterogeneous \
> > >> > --enable-mpi-thread-multiple \
> > >> > --with-threads=posix \
> > >> > --with-hwloc=internal \
> > >> > --without-verbs \
> > >> > --with-wrapper-cflags="-std=c11 -m64" \
> > >> > --enable-debug \
> > >> > |& tee log.configure.$SYSTEM_ENV.$MACHINE_ENV.64_gcc
> > >> >
> > >> > I use Java 8.
> > >> >
> > >> > tyr openmpi-1.9 112 java -version
> > >> > java version "1.8.0"
> > >> > Java(TM) SE Runtime Environment (build 1.8.0-b132)
> > >> > Java HotSpot(TM) 64-Bit Server VM (build 25.0-b70, mixed mode)
> > >> > tyr openmpi-1.9 113
> > >> >
> > >> > Unfortunately I still get a SIGSEGV with openmpi-dev-124-g91e9686.
> > >> > I have applied your patch and will try to debug my small Java
> > >> > program tomorrow or next week and then let you know the result.
