Hi Gilles,
can you post your test program ?
Attached.
did you try to run the very same test with ompi configure'd without --enable-heterogeneous ?
No.
can you reproduce the crash with the v2.x series ?
No, I tried, but wasn't successful :-)). Kind regards Siegmar
Cheers, Gilles On Tuesday, September 8, 2015, Siegmar Gross <siegmar.gr...@informatik.hs-fulda.de <mailto:siegmar.gr...@informatik.hs-fulda.de>> wrote: Hi, yesterday I have built openmpi-v1.10.0-5-ge0b85ea on my machines (Solaris 10 Sparc, Solaris 10 x86_64, and openSUSE Linux 12.1 x86_64) with gcc-5.1.0 and Sun C 5.13. Sometimes I have the following problem when I run a small Java program in my heterogeneous environment. The problem arises even if I only use my Linux box. It doesn't matter if I use my cc- or gcc-version of Open MPI. Sometimes I must run the program 10 times before the error shows up. I couldn't reproduce the error with openmpi-v2.x-dev-325-g8ae44ea. linpc1 fd1026 102 mpiexec -np 2 java MsgSendRecvMain Java HotSpot(TM) 64-Bit Server VM warning: You have loaded library /usr/local/openmpi-1.10.1_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-1.10.1_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 1 process sends its greetings. Greetings from process 1: message tag: 3 message length: 6 message: linpc1 linpc1 fd1026 102 mpiexec -np 4 java MsgSendRecvMain ... (above message) Now 3 processes are sending greetings. Greetings from process 3: message tag: 3 message length: 6 message: linpc1??????????????????????????????????????????????????????????????????|}~ ?(?4???? ?????? ?????? ?????? ????? ??? 9:!"? Greetings from process 2: message tag: 3 Kind regards Siegmar _______________________________________________ users mailing list us...@open-mpi.org Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users Link to this post: http://www.open-mpi.org/community/lists/users/2015/09/27545.php
/* Small program that sends/receives a message with point-to-point
* operations.
*
* "mpijavac" and Java-bindings are available in "Open MPI
* version 1.74" or newer.
*
*
* Class file generation:
* mpijavac MsgSendRecvMain.java
*
* Usage:
* mpiexec [parameters] java [parameters] MsgSendRecvMain
*
* Examples:
* mpiexec java MsgSendRecvMain
* mpiexec -host sunpc1,linpc1,rs0 java -cp $HOME/mpi_classfiles \
* MsgSendRecvMain
*
*
* File: MsgSendRecvMain.java Author: S. Gross
* Date: 19.09.2013
*
*/
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)
{
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) + "\n");
}
/* terminate all processes */
for (i = 1; i < ntasks; ++i)
{
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, buffer.length, MPI.CHAR, 0,
MPI.ANY_TAG);
if (status.getTag () != EXITTAG)
{
buffer = (MPI.getProcessorName()).toCharArray();
MPI.COMM_WORLD.send (buffer, buffer.length, MPI.CHAR,
0, MSGTAG);
}
else
{
more_to_do = false; /* terminate */
}
}
}
MPI.Finalize ();
}
}
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