Improved analysis of functions to instrument + MPI support + timemory support (#2)

* various tweaks
* build updates + cleanup + overlap guard + min addr range
* Library source reorg + miscellaneous tweaks
* Removed unnecessary fwd decls
* Print address range in --print-X pair mode

- hosttrace modifications
  - disable instrumenting functions with overlapping sections or multiple entry points by default (control via --allow-overlapping option)
  - disable instrumenting functions whose address range < 512 bytes unless a loop is present by default (control via --min-address-range option)
  - disable instrumenting functions w/ loops whose address range < 64 bytes (control via --min-loop-address-range)
- Support for wrapping MPI function calls even in binary rewrite mode
  - e.g. use gotcha to wrap MPI functions with hosttrace_push_trace and hosttrace_pop_trace
- New timemory only mode --> HOSTTRACE_USE_TIMEMORY=ON
- New timemory + perfetto mode --> HOSTTRACE_USE_PERFETTO=ON + HOSTTRACE_USE_TIMEMORY=ON
- Full support for all timemory components
- parallel-overhead example for measuring the overhead in a MT-parallelized application with very small instrumentation functions
- improvements to output directories for hosttrace exe
- improvements to output directories for hosttrace library
- new hosttrace options
  - --print-instrumented <type> prints out the instrumented entities and exits
  - --print-available <type> prints out the available instrumentation entities and exits
  - --print-overlapping <type> prints out the overlapping entities and exits
  - NOTE: <type> above refers to the information printed out, e.g. module name vs. function name vs. module and function name, etc.

examples/transpose/CMakeLists.txt

@@ -45,21 +45,33 @@ if(TARGET MPI::MPI_C)
     get_target_property(INCLUDE_DIRS MPI::MPI_C INTERFACE_INCLUDE_DIRECTORIES)
     foreach(_IDIR ${INCLUDE_DIRS})
         set(transpose_CXX_FLAGS "${transpose_CXX_FLAGS} -I${_IDIR}")
+    endforeach()
+    if(MPI_C_LINK_FLAGS)
+        set(transpose_LINK_FLAGS "${transpose_LINK_FLAGS} ${MPI_C_LINK_FLAGS}")
+    endif()
+    set(_LINK_LIBS "")
+    foreach(_LIB ${MPI_C_LIB_NAMES})
+        string(APPEND _LINK_LIBS "-l${_LIB} ")
+    endforeach()
+    foreach(_IDIR ${INCLUDE_DIRS} ${MPI_mpich_LIBRARY} ${MPI_mpi_LIBRARY} ${MPI_LIBRARY_DIRS})
         get_filename_component(_LIBDIR "${_IDIR}" DIRECTORY)
+        if(EXISTS "${_IDIR}/libmpi${CMAKE_SHARED_LIBRARY_SUFFIX}")
+            set(transpose_LINK_FLAGS "${transpose_LINK_FLAGS} -L${_IDIR} ${_LINK_LIBS}")
+        endif()
+        if(EXISTS "${_LIBDIR}/libmpi${CMAKE_SHARED_LIBRARY_SUFFIX}")
+            set(transpose_LINK_FLAGS "${transpose_LINK_FLAGS} -L${_LIBDIR} ${_LINK_LIBS}")
+        endif()
         foreach(_LDIR lib lib64)
             set(_LIBDIR_SAVE "${_LIBDIR}")
             if(NOT EXISTS "${_LIBDIR}/${_LDIR}")
                 get_filename_component(_LIBDIR "${_LIBDIR}" DIRECTORY)
             endif()
             if(EXISTS "${_LIBDIR}/${_LDIR}")
-                set(transpose_LINK_FLAGS "${transpose_LINK_FLAGS} -L${_LIBDIR}/${_LDIR} -lmpi")
+                set(transpose_LINK_FLAGS "${transpose_LINK_FLAGS} -L${_LIBDIR}/${_LDIR} ${_LINK_LIBS}")
             endif()
             set(_LIBDIR "${_LIBDIR_SAVE}")
         endforeach()
     endforeach()
-    if(MPI_C_LINK_FLAGS)
-        set(transpose_LINK_FLAGS "${transpose_LINK_FLAGS} ${MPI_C_LINK_FLAGS}")
-    endif()
 endif()
 
 # remove generator expressions

examples/transpose/transpose.cpp

@@ -155,11 +155,15 @@ run(int argc, char** argv)
 int
 main(int argc, char** argv)
 {
+    int rank = 0;
 #if defined(USE_MPI)
     MPI_Init(&argc, &argv);
+    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
 #endif
-    run(argc, argv);
+    if(rank == 0)
+        run(argc, argv);
 #if defined(USE_MPI)
+    MPI_Barrier(MPI_COMM_WORLD);
     MPI_Finalize();
 #endif
     return 0;