From 30ea62d482b3b5d1d7ca998e7d15240b70c005d3 Mon Sep 17 00:00:00 2001
From: William F Godoy <williamfgc@yahoo.com>
Date: Tue, 27 Jun 2017 16:29:26 -0400
Subject: [PATCH] Enable memory runtime parameters using XML config file
Picking up config.xml from examples/heatTransfer/write/config.xml from
./build/bin/heatTransfer_write_adios2
---
examples/heatTransfer/write/CMakeLists.txt | 2 ++
examples/heatTransfer/write/IO_adios2.cpp | 10 +++++++++-
examples/heatTransfer/write/config.xml | 23 +++++++++++++---------
3 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/examples/heatTransfer/write/CMakeLists.txt b/examples/heatTransfer/write/CMakeLists.txt
index 426c51240..b55958482 100644
--- a/examples/heatTransfer/write/CMakeLists.txt
+++ b/examples/heatTransfer/write/CMakeLists.txt
@@ -16,6 +16,8 @@ if(ADIOS2_HAVE_MPI)
PRIVATE ${MPI_C_INCLUDE_PATH}
)
target_link_libraries(heatTransfer_write_adios2 adios2 ${MPI_C_LIBRARIES})
+ target_compile_definitions(heatTransfer_write_adios2 PRIVATE
+ -DDEFAULT_CONFIG=${CMAKE_CURRENT_SOURCE_DIR}/config.xml)
if(ADIOS2_HAVE_ADIOS1)
find_package(ADIOS1 REQUIRED)
diff --git a/examples/heatTransfer/write/IO_adios2.cpp b/examples/heatTransfer/write/IO_adios2.cpp
index 7abf122a2..e795d5976 100644
--- a/examples/heatTransfer/write/IO_adios2.cpp
+++ b/examples/heatTransfer/write/IO_adios2.cpp
@@ -14,6 +14,13 @@
#include <adios2.h>
+#define str_helper(X) #X
+#define str(X) str_helper(X)
+#ifndef DEFAULT_CONFIG
+#define DEFAULT_CONFIG config.xml
+#endif
+#define DEFAULT_CONFIG_STR str(DEFAULT_CONFIG)
+
static int rank_saved;
adios2::ADIOS *ad = nullptr;
std::shared_ptr<adios2::Engine> bpWriter;
@@ -24,7 +31,8 @@ IO::IO(const Settings &s, MPI_Comm comm)
{
rank_saved = s.rank;
m_outputfilename = s.outputfile + ".bp";
- ad = new adios2::ADIOS("config.xml", comm, adios2::DebugON);
+ ad = new adios2::ADIOS(std::string(DEFAULT_CONFIG_STR), comm,
+ adios2::DebugON);
// Define method for engine creation
diff --git a/examples/heatTransfer/write/config.xml b/examples/heatTransfer/write/config.xml
index 2aca2b3fe..7013154c4 100644
--- a/examples/heatTransfer/write/config.xml
+++ b/examples/heatTransfer/write/config.xml
@@ -1,13 +1,14 @@
<?xml version="1.0"?>
-<!-- Config XML file fo the heatTransfer_write_adios2 executable from
- IO_adios2.cpp -->
+<!-- Config XML file fo the heatTransfer_write_adios2 executable in .
+ build/bin from IO_adios2.cpp -->
<adios-config>
<io name="output">
<engine type="BPFileWriter">
- <!-- for vectorized memory operations -->
- <parameter key="Threads" value="1"/>
+ <!-- for vectorized memory operations, make sure your system
+ enables threads-->
+ <parameter key="Threads" value="2"/>
<!-- Microseconds (default), Milliseconds, Seconds,
Minutes, Hours -->
@@ -17,12 +18,15 @@
(applications might choose an optimal value) -->
<!--<parameter key="InitialBufferSize" value="16Kb"/> -->
- <!-- XXKb, XXMb, or XXXGb supported, default=Unlimited or
- maximum at each time step
+ <!-- XXKb, XXMb, or XXXGb supported, default=Unlimited (until
+ fails), maximum at each time step
(applications might choose an optimal value) -->
- <!-- <parameter key="MaxBufferSize" value="50Mb"/> -->
+ <!-- <parameter key="MaxBufferSize" value="2Gb"/> -->
- <!-- exponential growth factor > 1, default = 1.05 -->
+ <!-- exponential growth factor > 1, default = 1.05
+ 1.05 is good for a few large variables, for many small
+ variables increase the value to 1.5 to 2
+ (optimal value is application dependent)-->
<parameter key="BufferGrowthFactor" value="1.05"/>
</engine>
@@ -34,7 +38,8 @@
<!-- For read/write, Microseconds (default), Milliseconds, Seconds,
Minutes, Hours. open/close always in Microseconds -->
- <parameter key="ProfileUnits" value="Milliseconds"/>
+ <parameter key="ProfileUnits" value="Microseconds"/>
+
</transport>
</io>
</adios-config>
--
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