Add wasm build

Docs/Build.md

@@ -118,6 +118,33 @@ Add this to `cmake` command:
 -DLINK_NUMA=ON
 ```
 
-# Cross build for ARM
+# Cross build
 
 See [cross build](CrossBuild.md).
+
+# Benchmark build
+
+Sequentual build
+```sh
+cmake .. -DCMAKE_BUILD_TYPE=Release -DSOLVER_DIM_MODES=DIM3 -DVALUE_TYPE=d -DCOMPLEX_FIELD_VALUES=ON -DPRINT_MESSAGE=ON -DPARALLEL_GRID=OFF
+make fdtd3dbench
+```
+
+# WebAssembly build
+
+Steps:
+- Add `emcmake` before `cmake` command
+- Increase inital memory size with `-s INITIAL_MEMORY=134217728`
+- Set `-g2` debuggability level
+- Add `emmake` before `make` command
+- In order to generate htlm directly, change `CMAKE_EXECUTABLE_SUFFIX` to `.html` in /usr/share/emscripten/cmake/Modules/Platform/Emscripten.cmake
+
+For example:
+```sh
+mkdir Release
+cd Release
+emcmake cmake .. -DCMAKE_CXX_FLAGS="-g2" -DCMAKE_EXE_LINKER_FLAGS="-s INITIAL_MEMORY=134217728" -DCMAKE_BUILD_TYPE=Release -DSOLVER_DIM_MODES=DIM3 -DVALUE_TYPE=d -DCOMPLEX_FIELD_VALUES=ON -DPRINT_MESSAGE=ON -DPARALLEL_GRID=OFF
+emmake make fdtd3dbench
+```
+
+This will create `fdtd3d.js`, `fdtd3d.wasm` and `fdtd3d.html`.

README.md

@@ -8,7 +8,7 @@
 
 # fdtd3d
 
-This is an open-source implementation of FDTD Maxwell's equations solver for different dimensions (1, 2 or 3) with support of concurrency (MPI/OpenMP/Cuda) if required and for different architectures (x64, Arm, Arm64, RISC-V, PowerPC). The key idea is building of solver for your specific needs with different components, i.e. concurrency support with enabled MPI, OpenMP or GPU support, parallel buffer types, specific dimension and others. OpenMP support is WIP.
+This is an open-source implementation of FDTD Maxwell's equations solver for different dimensions (1, 2 or 3) with support of concurrency (MPI/OpenMP/Cuda) if required and for different architectures (x64, Arm, Arm64, RISC-V, PowerPC, Wasm). The key idea is building of solver for your specific needs with different components, i.e. concurrency support with enabled MPI, OpenMP or GPU support, parallel buffer types, specific dimension and others. OpenMP support is WIP.
 
 For additional info on current project development status and future plans check issues and milestones, design docs are available at [documentation](Docs/Design.md). Also, doxygen documentation can be generated from config in `./Doxyfile`:
 
@@ -26,7 +26,7 @@ Build is done using cmake:
 mkdir Release
 cd Release
 cmake .. -DCMAKE_BUILD_TYPE=Release
-make
+make fdtd3d
 ```
 
 See [documentation](Docs/Build.md) for specific details.

Source/CMakeLists.txt

@@ -55,6 +55,9 @@ if ("${CUDA_ENABLED}")
   set_target_properties (fdtd3d PROPERTIES CUDA_SEPARABLE_COMPILATION ON)
 else ()
   add_executable (fdtd3d main.cpp)
+  add_executable (fdtd3dbench main.cpp)
+  target_compile_definitions (fdtd3dbench PUBLIC PREDEFINED_ARGS)
+  target_link_libraries (fdtd3dbench Scheme)
 endif ()
 
 target_link_libraries (fdtd3d Scheme)

Source/Helpers/PAssert.cpp

@@ -21,13 +21,17 @@
 #include "PAssert.h"
 
 #include <cstdlib>
+
+#ifdef HAVE_EXECINFO_H
 #include <execinfo.h>
+#endif // HAVE_EXECINFO_H
 
 /**
  * This function is used to exit and for debugging purposes.
  */
 void program_fail ()
 {
+#ifdef HAVE_EXECINFO_H
   const unsigned bufsize = 256;
   int nptrs;
   void *buffer[bufsize];
@@ -50,6 +54,7 @@ void program_fail ()
   }
 
   free(strings);
+#endif // HAVE_EXECINFO
 
   exit (1);
 } /* program_fail */

Source/Settings/Settings.cpp

@@ -20,6 +20,7 @@
 
 #include "Settings.h"
 
+#include <alloca.h>
 #include <string.h>
 #include <fstream>
 #include <cstring>
@@ -70,12 +71,14 @@ Settings::Uninitialize ()
  */
 CUDA_HOST
 void
-Settings::parseCoordinate (char *str, /**< string to parse */
+Settings::parseCoordinate (const char *str, /**< string to parse */
                            int &xval, /**< out: x value */
                            int &yval, /**< out: y value */
                            int &zval) /**< out: z value */
 {
-  char *coordStr = str;
+  const char *coordStr = str;
+  const int tmpBufSize = 16;
+  char * tmpCoordStr = (char *) alloca (tmpBufSize);
   int i = 0;
   while (coordStr[i] != '\0')
   {
@@ -90,20 +93,23 @@ Settings::parseCoordinate (char *str, /**< string to parse */
     {
       isEnd = true;
     }
-    coordStr[i] = '\0';
 
-    ASSERT (coordStr[1] == ':');
-    int val = STOI (coordStr+2);
+    ASSERT (i < tmpBufSize);
+    strncpy (tmpCoordStr, coordStr, i);
+    tmpCoordStr[i] = '\0';
 
-    if (coordStr[0] == 'x' || coordStr[0] == 'X')
+    ASSERT (tmpCoordStr[1] == ':');
+    int val = STOI (tmpCoordStr+2);
+
+    if (tmpCoordStr[0] == 'x' || tmpCoordStr[0] == 'X')
     {
       xval = val;
     }
-    else if (coordStr[0] == 'y' || coordStr[0] == 'Y')
+    else if (tmpCoordStr[0] == 'y' || tmpCoordStr[0] == 'Y')
     {
       yval = val;
     }
-    else if (coordStr[0] == 'z' || coordStr[0] == 'Z')
+    else if (tmpCoordStr[0] == 'z' || tmpCoordStr[0] == 'Z')
     {
       zval = val;
     }
@@ -126,7 +132,7 @@ CUDA_HOST
 int
 Settings::parseArg (int &index, /**< out: current argument index */
                     int argc, /**< total number of indexes */
-                    char **argv, /**< vector of cmd args */
+                    const char * const * argv, /**< vector of cmd args */
                     bool isCmd) /**< flag, whether argumens are passed through actual command line */
 {
   ASSERT (index >= 0 && index < argc);
@@ -370,7 +376,7 @@ Settings::parseArg (int &index, /**< out: current argument index */
 CUDA_HOST
 int
 Settings::setFromCmd (int argc, /**< number of arguments */
-                      char **argv, /**< arguments */
+                      const char * const * argv, /**< arguments */
                       bool isCmd) /**< flag, whether argumens are passed through actual command line */
 {
   if (argc == (isCmd ? 1 : 0))
@@ -519,7 +525,7 @@ Settings::loadCmdFromFile (std::string fileName) /**< name of file to load from
 CUDA_HOST
 int
 Settings::saveCmdToFile (int argc, /**< number of arguments */
-                         char **argv, /**< arguments */
+                         const char * const * argv, /**< arguments */
                          std::string fileName) /**< name of file to save to */
 {
   printf ("Saving command line to file %s\n", fileName.c_str ());
@@ -550,7 +556,7 @@ Settings::saveCmdToFile (int argc, /**< number of arguments */
 CUDA_HOST
 void
 Settings::SetupFromCmd (int argc, /**< number of arguments */
-                        char **argv) /**< arguments */
+                        const char * const *argv) /**< arguments */
 {
   int status = setFromCmd (argc, argv, true);
 

Source/Settings/Settings.h

@@ -177,12 +177,12 @@ class Settings
 
 private:
 
-  CUDA_HOST int parseArg (int &, int, char **, bool);
-  CUDA_HOST int setFromCmd (int, char **, bool);
+  CUDA_HOST int parseArg (int &, int, const char * const *, bool);
+  CUDA_HOST int setFromCmd (int, const char * const *, bool);
   CUDA_HOST int loadCmdFromFile (std::string);
-  CUDA_HOST int saveCmdToFile (int, char **, std::string);
+  CUDA_HOST int saveCmdToFile (int, const char * const *, std::string);
 
-  CUDA_HOST void parseCoordinate (char *, int &, int &, int &);
+  CUDA_HOST void parseCoordinate (const char *, int &, int &, int &);
 
 #ifdef CUDA_ENABLED
   CUDA_HOST void prepareDeviceSettings ();
@@ -226,7 +226,7 @@ class Settings
   CUDA_HOST void Uninitialize ();
 
   CUDA_HOST
-  void SetupFromCmd (int, char **);
+  void SetupFromCmd (int, const char * const *);
 
 #define SETTINGS_ELEM_FIELD_TYPE_NONE(fieldName, getterName, fieldType, defaultVal, cmdArg, description) \
   CUDA_DEVICE CUDA_HOST fieldType getterName () \