<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1">
<title></title>
</head>
<body text="#000000" bgcolor="#ffffff">
Hi Satish,<br>
<br>
thanks very much for quick infos!<br>
<br>
I understand that I have to use mpirun or mpiexec.<br>
(I still dont know how the system knows which procs can be used?)<br>
<br>
(in rexecshell one can fill in a list with the node-names)<br>
<br>
my questions arise out of the following situation:<br>
<br>
under cygwin:<br>
<br>
1. I downloaded Petsc and made the necc. definitions<br>
<br>
2. make all (everything ok!)<br>
<br>
3. make test ( (everything ok!)<br>
<br>
under the tests there are also test for parallelizations!<br>
<br>
I still dont know how Petsc was doing this tests???<br>
<br>
I may have missed something , but I never found a call to mpirun or
mpiexec?<br>
<br>
perhaps you can explain it?<br>
<br>
Best regards<br>
Franz<br>
<br>
<br>
<br>
Satish Balay wrote:<br>
<blockquote type="cite"
cite="midalpine.LFD.2.00.0810160312360.11156@asterix">
<pre wrap="">On Thu, 16 Oct 2008, Franz Th. Langer wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
System: Windows 2000, cygwin
parallel computation with MPI
(I am a newcomer to cygwin, I wrote a lot
of par. progs for VC 6.0 +MPI.)
compiling and linking of my par. petsc-program under cygwin is ok!
I can run the program on 1 proc only!
when I want to use more then 1 proc I am using Rexecshell!
than the program querries about a wrong commandline?
questions:
-under cygwin: do I have to use something else than Rexecshell?
-what has than to be installed/initiated on the other procs?
</pre>
</blockquote>
<pre wrap=""><!---->
Cygwin is used only to build libraries. If you built PETSc with MPI -
then you have to use the MPI startup mecanism [i.e mpiexec or mpirun]
to start parallel MPI jobs.
Satish
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Mit freundlichen Grüßen
Dipl.-Ing. Franz Theodor Langer (Geschäftsführer)
-----------------------------------------------------------------
E_Planung GmbH
Planung + Berechnung für Wissenschaft und Technik im Ingenieurbau
Schlüsselbergstraße 30, 81673 München, Tel. 089/454933-0 Fax -14
Geschäftsnummer: HRB 90116, Gerichtsstand: München
</pre>
</body>
</html>