From 219e6c8af2eb70be80a130f014d76bf05a48801b Mon Sep 17 00:00:00 2001
From: Oliver Sander <sander@igpm.rwth-aachen.de>
Date: Sun, 8 Jun 2014 09:48:15 +0000
Subject: [PATCH] Prepend communicator rank and size to the filename when
writing a distributed grid
Otherwise, all processes will write into the same file --> not a good idea.
[[Imported from SVN: r9776]]
---
dune/gfe/cosseratvtkwriter.hh | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/dune/gfe/cosseratvtkwriter.hh b/dune/gfe/cosseratvtkwriter.hh
index 76901acd..eba8499e 100644
--- a/dune/gfe/cosseratvtkwriter.hh
+++ b/dune/gfe/cosseratvtkwriter.hh
@@ -202,7 +202,17 @@ public:
#elif defined SECOND_ORDER // Write as P2 space
- std::ofstream outFile(filename + ".vtu");
+ std::stringstream fullfilename;
+
+ // Prepend rank and communicator size to the filename, if there are more than one process
+ if (gridView.comm().size() > 1)
+ {
+ fullfilename << 's' << std::setw(4) << std::setfill('0') << gridView.comm().size() << '-';
+ fullfilename << 'p' << std::setw(4) << std::setfill('0') << gridView.comm().rank() << '-';
+ fullfilename << filename;
+ }
+
+ std::ofstream outFile(fullfilename.str() + ".vtu");
// Write header
outFile << "<?xml version=\"1.0\"?>" << std::endl;
--
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