<div dir="ltr">People, help me. <br> Like I said in my previous message, my application worked when I compile the library with the options:<br><br>./configure --enable-romio --without-mpe --with-pm=mpd
--with-device=ch3:sock --enable-threads=multiple
--with-thread-package=posix <br><br>I did a safe copy of the version that is working. <br><br> But when I test remove all .o and executable files, and compile again, the application stops working.<br>(and my safe copy is working)<br>
<br>In my makefile I put:<br><br>CFLAGS = -g<br>CLIBS = -lpthread -lm<br><br>I need to compile with more options to make it work?<br><br><div class="gmail_quote">2008/9/19 Gisele Machado de Souza <span dir="ltr"><<a href="mailto:giselemachad@gmail.com" target="_blank">giselemachad@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div dir="ltr">People, thank you all!!!<br>I find a solution. I used mpich2-1.0.7 and compiled with this options:<br><br>> ./configure --enable-romio --without-mpe --with-pm=mpd --with-device=ch3:sock --enable-threads=multiple --with-thread-package=posix <br>
<br>and I included this instructions from phtreads:<br><br>> pthread_attr_init(&attr);<br> pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);<br> rc = pthread_create(&threads[t], &attr, threadfunc, (void *) listParam);<br>
<br>It works!!!<br><br><div dir="ltr">I hope not have more problems and I hope that the library is really stable for this type of situation.<br><br>If I have any other problem I turn to send messages. <br>
Thank you for helping!!!!<br><br></div><br><br><br><br><br><div class="gmail_quote">2008/9/19 Rajeev Thakur <span dir="ltr"><<a href="mailto:thakur@mcs.anl.gov" target="_blank">thakur@mcs.anl.gov</a>></span><div><div>
</div><div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Can you send us a small test case to reproduce the
problem?</font></span></div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Rajeev</font></span></div><br>
<blockquote dir="ltr" style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div dir="ltr" align="left" lang="en-us">
<hr>
<font face="Tahoma" size="2"><b>From:</b> <a href="mailto:owner-mpich-discuss@mcs.anl.gov" target="_blank">owner-mpich-discuss@mcs.anl.gov</a>
[mailto:<a href="mailto:owner-mpich-discuss@mcs.anl.gov" target="_blank">owner-mpich-discuss@mcs.anl.gov</a>] <b>On Behalf Of </b>Gisele Machado de
Souza<br><b>Sent:</b> Thursday, September 18, 2008 11:04 PM<br><b>To:</b>
<a href="mailto:mpich-discuss@mcs.anl.gov" target="_blank">mpich-discuss@mcs.anl.gov</a><br><b>Subject:</b> [mpich-discuss] Multithread
server using MPICH-2<br></font><br></div><div><div></div><div>
<div></div>
<div dir="ltr">Hello,<br><br>I'm implementing a server in MPI that accepts more
than one connection from clients at the same time.<br>For do that I used
MPI(mpich2-1.1.0a1.tar.gz) and pthreads.<br><br>What I want to do is a server
that stays in a infinity loop waiting for connections (MPI_Comm_accept(portMD,
MPI_INFO_NULL, 0, MPI_COMM_WORLD, newCommClient);). When a connection is
established, he creates a new thread and return to wait more
connections. That means, the server and the thread will work in
parallel.<br><br>The function that the thread will execute calls mpi
functions, like MPI_probe, MPI_Get_count, MPI_Recv, MPI_Send, MPI_Pack
and MPI_Unpack.<br><br>The problem I'm having is that the server and the
thread are not working in parallel successfully. Sometimes, the program hangs,
do nothing, and in another times a fatal error appears (Assertion failed in
file sock_wait.i at line 236: (pollfd->events & (0x001 | 0x004)) ||
pollfd->fd == -1).<br><br>When I put the server to sleep for a moment,
before he will wait another connection, during the time he was sleeping the
created thread works fine. Once the server wakes up and starts to wait for a
connection, things stop working.<br><br>A peace of my code
(Server):<br>-----------------------------------------------------------------------------------------------------------------------------<br>//
arguments passed to a thread<br>typedef struct<br>{ MPI_Comm
communicator;<br> char * path1;<br> char * path2;<br> char *
port; <br>} ThreadParam;<br><br> pthread_t
threads[10];<br> int t =0;<br> int rc;<br><br><br> ThreadParam
* listParam = NULL;<br> MPI_Comm * newCommClient;<br>
<br><br> /* server infinity loop */<br> while (time_out >
10)<br> {<br> <br> newCommClient =
malloc(sizeof(MPI_Comm));<br> <br>
<br> /* waiting for a connection
*/<br> MPI_Comm_accept(portMD, MPI_INFO_NULL, 0,
MPI_COMM_WORLD,
newCommClient);<br>
<br> listParam =
malloc(sizeof(ThreadParam));
<br> listParam->communicator = *newCommClient;
//with this communicator the thread will talk with
the
/
//client <br> listParam->path1 =
argv[2];<br> listParam->path2 =
argv[4];<br> listParam->port =
portMD;<br> <br> rc =
pthread_create(&threads[t], NULL, threadfunc, (void *)
listParam);<br> <br> if
(rc){<br> printf("ERROR;
return code from pthread_create() is %d\n",
rc);<br>
exit(-1);<br> }<br>
//sleep(1); <br> t++;<br>
}<br><br>-----------------------------------------------------------------------------------------------------------------------------<br>Please,
I need help to solve this problem!!<br><br>Thanks very
mych!<br><br>Gisele<br></div></div></div></blockquote></div>
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