diff --git a/compiler/characterizer/functional.py b/compiler/characterizer/functional.py
index 69183362..970f69f8 100644
--- a/compiler/characterizer/functional.py
+++ b/compiler/characterizer/functional.py
@@ -45,7 +45,10 @@ class functional(simulation):
             sram.sp_write(self.sp_file, trim=OPTS.trim_netlist)
         # Copy sp file to temp dir
         self.temp_spice = path.join(OPTS.openram_temp, "sram.sp")
-        shutil.copy(self.sp_file, self.temp_spice)
+        try:
+            shutil.copy(self.sp_file, self.temp_spice)
+        except shutil.SameFileError: # skip if the same
+            pass
 
         if not corner:
             corner = (OPTS.process_corners[0], OPTS.supply_voltages[0], OPTS.temperatures[0])
diff --git a/compiler/tests/04_rom_address_control_buf_test.py b/compiler/tests/04_rom_address_control_buf_test.py
old mode 100644
new mode 100755
diff --git a/compiler/tests/04_rom_precharge_test.py b/compiler/tests/04_rom_precharge_test.py
old mode 100644
new mode 100755
diff --git a/compiler/tests/Makefile b/compiler/tests/Makefile
index 0b1b9de0..ccca67b1 100644
--- a/compiler/tests/Makefile
+++ b/compiler/tests/Makefile
@@ -4,7 +4,6 @@ include $(TOP_DIR)/openram.mk
 .DEFAULT_GOAL := all
 
 ARGS ?=
-TEST_TECHS ?= scn4m_subm freepdk45
 TECHS ?= scn4m_subm freepdk45 sky130
 
 TEST_DIR   = $(TOP_DIR)/compiler/tests
@@ -22,74 +21,34 @@ RESULTS_DIR = $(OPENRAM_DIR)/results
 # or a specific tech:
 # freepdk45/test.py
 BROKEN_STAMPS = \
-	%/06_hierarchical_decoder_4096row_test.ok \
 	%/19_single_bank_16mux_1rw_1r_test.ok \
 	%/19_single_bank_16mux_test.ok \
 	%/20_sram_1bank_16mux_1rw_1r_test.ok \
-	%/20_sram_1bank_16mux_test.ok \
-	%/20_psram_1bank_2mux_1rw_1w_test.ok \
-	%/20_psram_1bank_2mux_1rw_1w_wmask_test.ok \
-	%/20_psram_1bank_2mux_1w_1r_test.ok \
-	%/20_psram_1bank_2mux_test.ok \
-	%/21_hspice_delay_test.ok \
-	%/21_hspice_setuphold_test.ok \
 	%/21_xyce_delay_test.ok \
-	%/22_psram_1bank_2mux_func_test.ok \
-	%/22_psram_1bank_4mux_func_test.ok \
-	%/22_psram_1bank_8mux_func_test.ok \
-	%/22_psram_1bank_nomux_func_test.ok \
-	%/22_sram_1bank_2mux_func_test.ok \
-	%/22_sram_1bank_2mux_global_func_test.ok \
-	%/22_sram_1bank_2mux_sparecols_func_test.ok \
-	%/22_sram_1bank_4mux_func_test.ok \
-	%/22_sram_1bank_8mux_func_test.ok \
-	%/22_sram_1bank_nomux_1rw_1r_func_test.ok \
-	%/22_sram_1bank_nomux_func_test.ok \
-	%/22_sram_1bank_nomux_sparecols_func_test.ok \
-	%/22_sram_1bank_wmask_1rw_1r_func_test.ok \
-	%/22_sram_wmask_func_test.ok \
-	%/26_hspice_pex_pinv_test.ok \
 	%/27_verilog_multibank_test.ok \
-	%/50_riscv_1k_1rw1r_func_test.ok \
-	%/50_riscv_1k_1rw_func_test.ok \
-	%/50_riscv_1rw1r_func_test.ok \
-	%/50_riscv_1rw1r_phys_test.ok \
-	%/50_riscv_1rw_func_test.ok \
-	%/50_riscv_1rw_phys_test.ok \
-	%/50_riscv_2k_1rw1r_func_test.ok \
-	%/50_riscv_2k_1rw_func_test.ok \
-	%/50_riscv_4k_1rw1r_func_test.ok \
-	%/50_riscv_4k_1rw_func_test.ok \
-	%/50_riscv_512b_1rw1r_func_test.ok \
-	%/50_riscv_512b_1rw_func_test.ok \
-	%/50_riscv_8k_1rw1r_func_test.ok \
-	%/50_riscv_8k_1rw_func_test.ok \
 	freepdk45/04_rom_address_control_buf_test.ok \
 	freepdk45/05_rom_array_test.ok \
 	freepdk45/06_rom_decoder_test.ok \
+	freepdk45/06_hierarchical_decoder_4096row_test.ok \
 	freepdk45/07_rom_column_mux_array_test.ok \
 	freepdk45/08_rom_decoder_buffer_array_test.ok \
 	freepdk45/08_rom_precharge_array_test.ok \
-	freepdk45/10_rom_wordline_driver_array_test.ok \
 	freepdk45/16_rom_control_logic_test.ok \
 	freepdk45/19_rom_bank_test.ok \
 	scn4m_subm/04_rom_address_control_buf_test.ok \
 	scn4m_subm/06_rom_decoder_test.ok \
-	scn4m_subm/07_rom_column_mux_array_test.ok \
+	scn4m_subm/06_hierarchical_decoder_4096row_test.ok \
 	scn4m_subm/08_rom_decoder_buffer_array_test.ok \
-	scn4m_subm/08_rom_precharge_array_test.ok \
-	scn4m_subm/10_rom_wordline_driver_array_test.ok \
 	scn4m_subm/14_rom_array_test.ok \
-	scn4m_subm/16_rom_control_logic_test.ok \
 	scn4m_subm/19_rom_bank_test.ok \
 	scn4m_subm/19_single_bank_global_bitline_test.ok \
+	scn4m_subm/50_riscv_1rw_phys_test.ok \
+	scn4m_subm/50_riscv_1rw1r_phys_test.ok \
 	sky130/01_library_test.ok \
 	sky130/03_wire_test.ok \
 	sky130/04_column_mux_pbitcell_test.ok \
 	sky130/04_dummy_pbitcell_test.ok \
 	sky130/04_pbitcell_test.ok \
-	sky130/04_pnand4_test.ok \
-	sky130/04_pand4_test.ok \
 	sky130/04_precharge_pbitcell_test.ok \
 	sky130/04_replica_pbitcell_test.ok \
 	sky130/04_dummy_pbitcell_1rw1r1w_test.ok \
@@ -97,13 +56,8 @@ BROKEN_STAMPS = \
 	sky130/04_replica_pbitcell_1rw1r1w_test.ok \
 	sky130/04_replica_pbitcell_1rw_test.ok \
 	sky130/05_pbitcell_array_test.ok \
-	sky130/05_bitcell_array_test.ok \
 	sky130/05_bitcell_array_1rw_1r_test.ok \
 	sky130/05_dummy_array_test.ok \
-	sky130/06_hierarchical_decoder_132row_test.ok \
-	sky130/06_hierarchical_decoder_512row_test.ok \
-	sky130/06_hierarchical_decoder_64row_test.ok \
-	sky130/06_hierarchical_decoder_pbitcell_test.ok \
 	sky130/07_column_mux_array_pbitcell_test.ok \
 	sky130/10_write_driver_array_spare_cols_test.ok \
 	sky130/10_write_driver_array_wmask_spare_cols_test.ok \
@@ -127,7 +81,6 @@ BROKEN_STAMPS = \
 	sky130/15_local_bitcell_array_leftrbl_1rw_test.ok \
 	sky130/15_local_bitcell_array_norbl_1rw_1r_test.ok \
 	sky130/15_local_bitcell_array_norbl_1rw_test.ok \
-	sky130/18_port_address_512rows_test.ok \
 	sky130/18_port_data_spare_cols_test.ok \
 	sky130/19_single_bank_2mux_test.ok \
 	sky130/19_single_bank_4mux_test.ok \
@@ -138,9 +91,13 @@ BROKEN_STAMPS = \
 	sky130/19_single_bank_nomux_norbl_test.ok \
 	sky130/19_single_bank_spare_cols_test.ok \
 	sky130/19_single_bank_wmask_test.ok \
-	sky130/19_pmulti_bank_test.ok \
 	sky130/19_psingle_bank_test.ok \
 	sky130/19_bank_select_pbitcell_test.ok \
+	sky130/20_psram_1bank_2mux_1rw_1w_test.ok \
+	sky130/20_psram_1bank_2mux_1rw_1w_wmask_test.ok \
+	sky130/20_psram_1bank_2mux_1w_1r_test.ok \
+	sky130/20_psram_1bank_2mux_test.ok \
+	sky130/20_sram_1bank_16mux_test.ok \
 	sky130/20_psram_1bank_4mux_1rw_1r_test.ok \
 	sky130/20_sram_1bank_2mux_1rw_1r_spare_cols_test.ok \
 	sky130/20_sram_1bank_2mux_1w_1r_spare_cols_test.ok \
@@ -164,10 +121,12 @@ BROKEN_STAMPS = \
 	sky130/22_psram_1bank_4mux_func_test.ok \
 	sky130/22_psram_1bank_8mux_func_test.ok \
 	sky130/22_psram_1bank_nomux_func_test.ok \
+	sky130/22_sram_1bank_2mux_global_func_test.ok \
+	sky130/22_sram_1bank_wmask_1rw_1r_func_test.ok \
+	sky130/22_sram_wmask_func_test.ok \
 	sky130/23_lib_sram_linear_regression_test.ok \
 	sky130/23_lib_sram_model_corners_test.ok \
 	sky130/23_lib_sram_model_test.ok \
-	sky130/23_lib_sram_prune_test.ok \
 	sky130/23_lib_sram_test.ok \
 	sky130/25_verilog_multibank_test.ok \
 	sky130/25_verilog_sram_test.ok \
@@ -176,21 +135,28 @@ BROKEN_STAMPS = \
 	sky130/30_openram_front_end_library_test.ok \
 	sky130/30_openram_front_end_test.ok \
 	sky130/30_openram_sram_char_test.ok \
-	sky130/30_openram_sram_func_test.ok \
+	sky130/50_riscv_1rw_phys_test.ok \
+	sky130/50_riscv_1rw1r_phys_test.ok \
 
 gettech = $(word 1,$(subst /, ,$*))
 getfile = $(word 2,$(subst /, ,$*))
 TECH_TEST_STAMPS=$(foreach T, $(TECHS), $(addprefix $T/, $(TEST_STAMPS)))
 
-# Filter out the tests after creating the tech stamps
+# Filter out the broken tests after creating the tech stamps
 WORKING_TECH_TEST_STAMPS=$(shell shuf -e -- $(filter-out $(BROKEN_STAMPS), $(TECH_TEST_STAMPS)))
-
+# Filter out the working tests after creating the tech stamps
+BROKEN_TECH_TEST_STAMPS=$(shell shuf -e -- $(filter $(BROKEN_STAMPS), $(TECH_TEST_STAMPS)))
 
 # Run all technologies
 all: clean $(WORKING_TECH_TEST_STAMPS)
 	@ls -1 $(TOP_DIR)/compiler/tests/results/*/*.bad 1> /dev/null 2>&1 && echo "FAILING TESTS" && ls -1 $(TOP_DIR)/compiler/tests/results/*/*.bad | sed -e "s#^.*results\/##" && exit 1 || exit 0
 .PHONY: all
 
+# Run broken stamps only
+broken: clean $(BROKEN_TECH_TEST_STAMPS)
+	@ls -1 $(TOP_DIR)/compiler/tests/results/*/*.bad 1> /dev/null 2>&1 && echo "FAILING TESTS" && ls -1 $(TOP_DIR)/compiler/tests/results/*/*.bad | sed -e "s#^.*results\/##" && exit 1 || exit 0
+.PHONY: broken
+
 # Run a given technology
 # e.g. make freepdk45
 $(TECHS):