diff --git a/Makefile b/Makefile
index 6fd703e..9fb8aca 100644
--- a/Makefile
+++ b/Makefile
@@ -18,12 +18,13 @@ else ifeq ($(ENV),GNU)
 	OPT = -O0
 	DEBUG = -g
 else
-    $(error No valid compiler environment set in $$ENV. First run: $$ source smvars.sh {intel | llvm | gnu})
+    $(error No valid compiler environment set in $$ENV. \
+	First run: $$ source smvars.sh {intel | llvm | gnu})
 endif
-CXXFLAGS = $(OPT) $(ARCH) $(DEBUG)
+CXXFLAGS = $(OPT) $(ARCH) $(DEBUG) -fPIC
 FFLAGS = $(CXXFLAGS)
 H5CXX = h5c++
-H5CXXFLAGS = $(CXXFLAGS) -fPIC
+H5CXXFLAGS = $(CXXFLAGS)
 FLIBS = -lstdc++
 
 ## Includes and dependencies
@@ -32,7 +33,9 @@ DEPS_CXX = $(OBJ_DIR)/SM_MaponiA3.o \
 		   $(OBJ_DIR)/SM_MaponiA3S.o \
 		   $(OBJ_DIR)/SM_Standard.o \
 		   $(OBJ_DIR)/SM_Helpers.o
-DEPS_F = $(DEPS_CXX) $(OBJ_DIR)/SM_MaponiA3_mod.o $(OBJ_DIR)/Helpers_mod.o
+DEPS_F = $(DEPS_CXX) \
+		 $(OBJ_DIR)/SM_MaponiA3_mod.o \
+		 $(OBJ_DIR)/Helpers_mod.o
 
 ## Directory structure
 SRC_DIR := src
@@ -70,7 +73,7 @@ $(OBJ_DIR)/%.o: $(TST_DIR)/%.cpp $(INC_DIR)/* | $(OBJ_DIR)
 	$(CXX) $(CXXFLAGS) $(INCLUDE) -c -o $@ $<
 
 $(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIE $(INCLUDE) -c -o $@ $<
+	$(CXX) $(CXXFLAGS) $(INCLUDE) -c -o $@ $<
 
 ## HDF5/C++ objects
 $(OBJ_DIR)/%_h5.o: $(TST_DIR)/%_h5.cpp $(INC_DIR)/* | $(OBJ_DIR)
@@ -88,17 +91,6 @@ endif
 $(OBJ_DIR)/%.o: $(TST_DIR)/%.f90 | $(OBJ_DIR)
 	$(FC) $(FFLAGS) -I $(OBJ_DIR)/ -c -o $@ $<
 
-### EXPLICIT BUILD RULES
-## special compiler flag -fPIC otherwise h5c++ builds fail
-$(OBJ_DIR)/SM_MaponiA3.o: $(SRC_DIR)/SM_MaponiA3.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIC $(INCLUDE) -c -o $@ $<
-
-$(OBJ_DIR)/SM_MaponiA3S.o: $(SRC_DIR)/SM_MaponiA3S.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIC $(INCLUDE) -c -o $@ $<
-
-$(OBJ_DIR)/SM_Standard.o: $(SRC_DIR)/SM_Standard.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIC $(INCLUDE) -c -o $@ $<
-
 
 #### LINKING
 $(BIN_DIR)/cMaponiA3_test_3x3_3: $(OBJ_DIR)/cMaponiA3_test_3x3_3.o $(DEPS_CXX) | $(BIN_DIR)
diff --git a/Makefile.verificarlo b/Makefile.verificarlo
index 44e3161..167b4b2 100644
--- a/Makefile.verificarlo
+++ b/Makefile.verificarlo
@@ -4,16 +4,25 @@ CXX = verificarlo-c++
 FC = verificarlo-f
 
 ## Compiler flags
-H5FLAGS = "-I/usr/include/hdf5/serial -L/usr/lib/x86_64-linux-gnu/hdf5/serial /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_hl_cpp.a /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_cpp.a /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_hl.a /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5.a -lpthread -lsz -lz -ldl -lm -Wl,-rpath -Wl,/usr/lib/x86_64-linux-gnu/hdf5/serial"
+H5FLAGS = "-I/usr/include/hdf5/serial \
+		   -L/usr/lib/x86_64-linux-gnu/hdf5/serial \
+		   /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_hl_cpp.a \
+		   /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_cpp.a \
+		   /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5_hl.a \
+		   /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5.a \
+		   -lpthread -lsz -lz -ldl -lm \
+		   -Wl,-rpath -Wl,/usr/lib/x86_64-linux-gnu/hdf5/serial"
 CXXFLAGS = -O0 -g $(H5FLAGS)
-FFLAGS = -O0 -g $(H5FLAGS)
+FFLAGS = $(CXXFLAGS)
 
 INCLUDE = -I $(INC_DIR)/
 DEPS_CXX = $(OBJ_DIR)/SM_MaponiA3.o \
 		   $(OBJ_DIR)/SM_MaponiA3S.o \
 		   $(OBJ_DIR)/SM_Standard.o \
 		   $(OBJ_DIR)/SM_Helpers.o
-DEPS_F = $(DEPS_CXX) $(OBJ_DIR)/SM_MaponiA3_mod.o $(OBJ_DIR)/Helpers_mod.o
+DEPS_F = $(DEPS_CXX) \
+		 $(OBJ_DIR)/SM_MaponiA3_mod.o \
+		 $(OBJ_DIR)/Helpers_mod.o
 FLIBS = -lstdc++
 
 SRC_DIR := src
@@ -36,7 +45,7 @@ EXEC := $(BIN_DIR)/cMaponiA3_test_3x3_3 \
 all: $(EXEC)
 
 clean:
-	@rm -vrf $(OBJ_DIR)
+	@rm -vrf $(OBJ_DIR) .*.o *.dbg *.cmdx *.cmod *.ilm *.stb
 
 distclean: clean
 	@rm -vrf $(BIN_DIR) \
@@ -53,7 +62,7 @@ $(OBJ_DIR)/%.o: $(TST_DIR)/%.cpp $(INC_DIR)/* | $(OBJ_DIR)
 	$(CXX) $(CXXFLAGS) $(ARCH) $(INCLUDE) -c -o $@ $<
 
 $(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIE $(INCLUDE) -c -o $@ $<
+	$(CXX) $(CXXFLAGS) $(INCLUDE) -c -o $@ $<
 
 ## HDF5/C++ objects
 $(OBJ_DIR)/%_h5.o: $(TST_DIR)/%_h5.cpp $(INC_DIR)/* | $(OBJ_DIR)
@@ -61,35 +70,19 @@ $(OBJ_DIR)/%_h5.o: $(TST_DIR)/%_h5.cpp $(INC_DIR)/* | $(OBJ_DIR)
 
 ## Fortran modules
 $(OBJ_DIR)/%_mod.o: $(SRC_DIR)/%_mod.f90 | $(OBJ_DIR)
-	$(FC) $(FFLAGS) $(ARCH) -module $(OBJ_DIR)/ -c -o $@ $<
+	$(FC) $(FFLAGS) $(ARCH) -J $(OBJ_DIR)/ -c -o $@ $<
 
 ## Fortran objects
 $(OBJ_DIR)/%.o: $(TST_DIR)/%.f90 | $(OBJ_DIR)
 	$(FC) $(FFLAGS) $(ARCH) -I $(OBJ_DIR)/ -c -o $@ $<
 
-### EXPLICIT BUILD RULES
-## special compiler flag -fPIC otherwise h5c++ builds fail
-$(OBJ_DIR)/SM_MaponiA3.o: $(SRC_DIR)/SM_MaponiA3.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIC $(ARCH) $(INCLUDE) -c -o $@ $<
-
-$(OBJ_DIR)/SM_MaponiA3S.o: $(SRC_DIR)/SM_MaponiA3S.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIC $(INCLUDE) -c -o $@ $<
-
-$(OBJ_DIR)/SM_Standard.o: $(SRC_DIR)/SM_Standard.cpp $(INC_DIR)/* | $(OBJ_DIR)
-	$(CXX) $(CXXFLAGS) -fPIC $(ARCH) $(INCLUDE) -c -o $@ $<
-
 
 #### LINKING
 $(BIN_DIR)/cMaponiA3_test_3x3_3: $(OBJ_DIR)/cMaponiA3_test_3x3_3.o $(DEPS_CXX) | $(BIN_DIR)
 	$(CXX) -o $@ $^
 
-#begin H5
 $(BIN_DIR)/test_h5: $(OBJ_DIR)/test_h5.o $(DEPS_CXX) | $(BIN_DIR)
 	$(CXX) -o $@ $^ $(H5FLAGS)
-#$(BIN_DIR)/test_external_h5: $(OBJ_DIR)/test_external_h5.o $(DEPS_CXX) | $(BIN_DIR)
-#	$(CXX) -o $@ $^ $(H5FLAGS)
-#end H5
-
 
 $(BIN_DIR)/fMaponiA3_test_3x3_3: $(DEPS_F) $(OBJ_DIR)/fMaponiA3_test_3x3_3.o  | $(BIN_DIR)
 	$(FC) $(FLIBS) -o $@ $^
diff --git a/datasets/qmcchem_update-size_dist.log b/datasets/qmcchem_update-size_dist.log
deleted file mode 100644
index dad29fb..0000000
--- a/datasets/qmcchem_update-size_dist.log
+++ /dev/null
@@ -1,24924 +0,0 @@
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diff --git a/datasets/qmcchem_update-size_dist.pdf b/datasets/qmcchem_update-size_dist.pdf
deleted file mode 100644
index 7d0a13e..0000000
Binary files a/datasets/qmcchem_update-size_dist.pdf and /dev/null differ
diff --git a/datasets/small/dataset.small.dat b/datasets/small/dataset.dat
similarity index 99%
rename from datasets/small/dataset.small.dat
rename to datasets/small/dataset.dat
index c65fc95..a393c0b 100644
--- a/datasets/small/dataset.small.dat
+++ b/datasets/small/dataset.dat
@@ -535,12 +535,12 @@
 (04,04)    0.100000000000000E+01    0.000000000000000E+00
 #COL_UPDATE_INDEX: 2
 #COL_UPDATE_COMP_(01):   0.000000000000000E+00
-#COL_UPDATE_COMP_(02):  -0.200000000000000E+01
+#COL_UPDATE_COMP_(02):  -1.000000000000000E+00
 #COL_UPDATE_COMP_(03):   0.000000000000000E+00
-#COL_UPDATE_COMP_(04):   0.000000000000000E+00
+#COL_UPDATE_COMP_(04):   1.000000000000000E+00
 #COL_UPDATE_INDEX: 4
-#COL_UPDATE_COMP_(01):   0.000000000000000E+00
-#COL_UPDATE_COMP_(02):  -0.100000000000000E+01
+#COL_UPDATE_COMP_(01):  -1.000000000000000E+00
+#COL_UPDATE_COMP_(02):  -1.000000000000000E+00
 #COL_UPDATE_COMP_(03):   0.000000000000000E+00
-#COL_UPDATE_COMP_(04):   0.000000000000000E+00
+#COL_UPDATE_COMP_(04):  -1.000000000000000E+00
 #END_PACKET
diff --git a/datasets/small/dataset.small.hdf5 b/datasets/small/dataset.hdf5
similarity index 76%
rename from datasets/small/dataset.small.hdf5
rename to datasets/small/dataset.hdf5
index 2c0ba2e..872ecb8 100644
Binary files a/datasets/small/dataset.small.hdf5 and b/datasets/small/dataset.hdf5 differ
diff --git a/src/SM_MaponiA3S.cpp b/src/SM_MaponiA3S.cpp
index 505219a..249f018 100644
--- a/src/SM_MaponiA3S.cpp
+++ b/src/SM_MaponiA3S.cpp
@@ -4,7 +4,7 @@
 #include "SM_MaponiA3S.hpp"
 #include "SM_Helpers.hpp"
 
-// #define DEBUG
+#define DEBUG
 
 void MaponiA3S(double *Slater_inv, unsigned int Dim,
               unsigned int N_updates, double *Updates,