Hi Howard,
I've attached the file.
Best regards
Siegmar
Am 14.01.2016 um 18:40 schrieb Howard Pritchard:
HI Sigmar,
Would you mind posting your MsgSendRecvMain to the mail list? I'd like to see
if I can
reproduce it on my linux box.
Thanks,
Howard
2016-01-14 7:30 GMT-07:00 Siegmar Gross <siegmar.gr...@informatik.hs-fulda.de
<mailto:siegmar.gr...@informatik.hs-fulda.de>>:
Hi,
I've successfully built openmpi-v1.10.1-140-g31ff573 on my machine
(SUSE Linux Enterprise Server 12.0 x86_64) with gcc-5.2.0 and
Sun C 5.13. Unfortunately I get warnings if I use my cc version
running a Java program, although I added "-z noexecstack" to
CFLAGS. I used the following commands to build the package.
mkdir openmpi-v1.10.1-140-g31ff573-${SYSTEM_ENV}.${MACHINE_ENV}.64_cc
cd openmpi-v1.10.1-140-g31ff573-${SYSTEM_ENV}.${MACHINE_ENV}.64_cc
../openmpi-v1.10.1-140-g31ff573/configure \
--prefix=/usr/local/openmpi-1.10.2_64_cc \
--libdir=/usr/local/openmpi-1.10.2_64_cc/lib64 \
--with-jdk-bindir=/usr/local/jdk1.8.0_66/bin \
--with-jdk-headers=/usr/local/jdk1.8.0_66/include \
JAVA_HOME=/usr/local/jdk1.8.0_66 \
LDFLAGS="-m64 -mt" \
CC="cc" CXX="CC" FC="f95" \
CFLAGS="-m64 -mt -z noexecstack" CXXFLAGS="-m64 -library=stlport4"
FCFLAGS="-m64" \
CPP="cpp" CXXCPP="cpp" \
--enable-mpi-cxx \
--enable-cxx-exceptions \
--enable-mpi-java \
--enable-heterogeneous \
--enable-mpi-thread-multiple \
--with-hwloc=internal \
--without-verbs \
--with-wrapper-cflags="-m64 -mt" \
--with-wrapper-cxxflags="-m64 -library=stlport4" \
--with-wrapper-fcflags="-m64" \
--with-wrapper-ldflags="-mt" \
--enable-debug \
|& tee log.configure.$SYSTEM_ENV.$MACHINE_ENV.64_cc
make |& tee log.make.$SYSTEM_ENV.$MACHINE_ENV.64_cc
loki java 115 ompi_info | egrep -e "Open MPI repo revision:" -e "C
compiler absolute:"
Open MPI repo revision: v1.10.1-140-g31ff573
C compiler absolute: /opt/solstudio12.4/bin/cc
loki java 116 mpiexec -np 4 --host loki --slot-list 0:0-5,1:0-5 java
MsgSendRecvMain
Java HotSpot(TM) 64-Bit Server VM warning: You have loaded library
/usr/local/openmpi-1.10.2_64_cc/lib64/libmpi_java.so.1.2.0 which might
have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c
<libfile>', or link it with '-z noexecstack'.
Java HotSpot(TM) 64-Bit Server VM warning: You have loaded library
/usr/local/openmpi-1.10.2_64_cc/lib64/libmpi_java.so.1.2.0 which might
have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c
<libfile>', or link it with '-z noexecstack'.
Java HotSpot(TM) 64-Bit Server VM warning: You have loaded library
/usr/local/openmpi-1.10.2_64_cc/lib64/libmpi_java.so.1.2.0 which might
have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c
<libfile>', or link it with '-z noexecstack'.
Java HotSpot(TM) 64-Bit Server VM warning: You have loaded library
/usr/local/openmpi-1.10.2_64_cc/lib64/libmpi_java.so.1.2.0 which might
have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c
<libfile>', or link it with '-z noexecstack'.
Now 3 processes are sending greetings.
Greetings from process 1:
message tag: 3
message length: 4
message: loki
...
Does anybody know how I can get rid of the messages or can somebody
fix the problem directly in the distribution? Please let me know if
you need anything else. Thank you very much for any help in advance.
Best regards
Siegmar
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/* Small program that sends/receives a message with point-to-point
* operations.
*
* "mpijavac" and Java-bindings are available in "Open MPI
* version 1.7.4" or newer.
*
*
* Class file generation:
* mpijavac MsgSendRecvMain.java
* mpijavac -d $HOME/mpi_classfiles MsgSendRecvMain.java
*
* Usage:
* mpiexec [parameters] java [parameters] MsgSendRecvMain
*
* Examples:
* mpiexec -np 2 java MsgSendRecvMain
* mpiexec -np 4 --host sunpc1,linpc1,rs0 \
* java -cp $HOME/mpi_classfiles MsgSendRecvMain
*
*
* File: MsgSendRecvMain.java Author: S. Gross
* Date: 10.09.2015
*
*/
import mpi.*;
public class MsgSendRecvMain
{
static final int SENDTAG = 1; /* send message command */
static final int EXITTAG = 2; /* termination command */
static final int MSGTAG = 3; /* normal message tag */
static final int BUF_SIZE = 256; /* message buffer size */
public static void main (String args[]) throws MPIException
{
int mytid, /* my task id */
ntasks, /* number of parallel tasks */
num, /* number of received data items*/
i; /* loop variable */
char buffer[]; /* message buffer */
Status status; /* status of MPI operation */
MPI.Init (args);
mytid = MPI.COMM_WORLD.getRank ();
ntasks = MPI.COMM_WORLD.getSize ();
buffer = new char[BUF_SIZE];
if (mytid == 0)
{
if (ntasks == 2)
{
System.out.println ("\nNow " + (ntasks - 1) + " process " +
"sends its greetings.\n");
}
else
{
System.out.println ("\nNow " + (ntasks - 1) + " processes " +
"are sending greetings.\n");
}
/* request messages */
for (i = 1; i < ntasks; ++i)
{
/* send only a message tag without a message */
MPI.COMM_WORLD.send (buffer, 0, MPI.CHAR, i, SENDTAG);
}
/* wait for messages and print greetings */
for (i = 1; i < ntasks; ++i)
{
status = MPI.COMM_WORLD.recv (buffer, BUF_SIZE, MPI.CHAR,
MPI.ANY_SOURCE, MPI.ANY_TAG);
num = status.getCount (MPI.CHAR);
System.out.println ("Greetings from process " +
status.getSource () + ":\n" +
" message tag: " + status.getTag () +
"\n" +
" message length: " + num +
"\n" +
" message: " +
String.valueOf (buffer, 0, num) + "\n");
}
/* terminate all processes */
for (i = 1; i < ntasks; ++i)
{
/* send only a message tag without a message */
MPI.COMM_WORLD.send (buffer, 0, MPI.CHAR, i, EXITTAG);
}
}
else
{
boolean more_to_do = true;
while (more_to_do)
{
status = MPI.COMM_WORLD.recv (buffer, BUF_SIZE, MPI.CHAR, 0,
MPI.ANY_TAG);
if (status.getTag () != EXITTAG)
{
char processorName[];
int lengthOfName;
processorName = (MPI.getProcessorName()).toCharArray();
lengthOfName = processorName.length;
if (lengthOfName > BUF_SIZE)
{
System.out.println ("Message too large for buffer.\n" +
"I shorten it to buffer size.\n");
lengthOfName = BUF_SIZE;
}
MPI.COMM_WORLD.send (processorName, lengthOfName, MPI.CHAR,
0, MSGTAG);
}
else
{
more_to_do = false; /* terminate */
}
}
}
MPI.Finalize ();
}
}
