merge dev

compiler/characterizer/functional.py

@@ -32,13 +32,13 @@ class functional(simulation):
         if not spfile:
             # self.sp_file is assigned in base class
             sram.sp_write(self.sp_file, trim=OPTS.trim_netlist)
-            
+
         if not corner:
             corner = (OPTS.process_corners[0], OPTS.supply_voltages[0], OPTS.temperatures[0])
 
         if period:
             self.period = period
-            
+
         if not output_path:
             self.output_path = OPTS.openram_temp
         else:
@@ -63,11 +63,12 @@ class functional(simulation):
             self.addr_spare_index = self.addr_size
         # If trim is set, specify the valid addresses
         self.valid_addresses = set()
-        self.max_address = 2**self.addr_size - 1 + (self.num_spare_rows * self.words_per_row) 
+        # Don't base off address with since we may have a couple spare columns
+        self.max_address = self.num_rows * self.words_per_row
         if OPTS.trim_netlist:
             for i in range(self.words_per_row):
                 self.valid_addresses.add(i)
-                self.valid_addresses.add(self.max_address - i)
+                self.valid_addresses.add(self.max_address - i - 1)
         self.probe_address, self.probe_data = '0' * self.addr_size, 0
         self.set_corner(corner)
         self.set_spice_constants()
@@ -87,7 +88,7 @@ class functional(simulation):
         self.num_cycles = cycles
         # This is to have ordered keys for random selection
         self.stored_words = collections.OrderedDict()
-        self.stored_spares = collections.OrderedDict()        
+        self.stored_spares = collections.OrderedDict()
         self.read_check = []
         self.read_results = []
 
@@ -128,11 +129,12 @@ class functional(simulation):
                                                                                                     name))
 
     def create_random_memory_sequence(self):
+        # Select randomly, but have 3x more reads to increase probability
         if self.write_size:
-            rw_ops = ["noop", "write", "partial_write", "read"]
+            rw_ops = ["noop", "write", "partial_write", "read", "read", "read"]
             w_ops = ["noop", "write", "partial_write"]
         else:
-            rw_ops = ["noop", "write", "read"]
+            rw_ops = ["noop", "write", "read", "read", "read"]
             w_ops = ["noop", "write"]
         r_ops = ["noop", "read"]
 
@@ -295,13 +297,37 @@ class functional(simulation):
             self.read_results.append([sp_read_value, dout_port, eo_period, check_count])
         return (1, "SUCCESS")
 
+    def format_value(self, value):
+        """ Format in better readable manner """
+
+        def delineate(word):
+            # Create list of chars in reverse order
+            split_word = list(reversed([x for x in word]))
+            # Add underscore every 4th char
+            split_word2 = [x + '_' * (n != 0 and n % 4 == 0) for n, x in enumerate(split_word)]
+            # Join the word unreversed back together
+            new_word = ''.join(reversed(split_word2))
+            return(new_word)
+
+        # Split extra cols
+        vals = value[:-self.num_spare_cols]
+        spare_vals = value[-self.num_spare_cols:]
+
+        # Insert underscores
+        vals = delineate(vals)
+        spare_vals = delineate(spare_vals)
+
+        return vals + "+" + spare_vals
+
     def check_stim_results(self):
         for i in range(len(self.read_check)):
             if self.read_check[i][0] != self.read_results[i][0]:
+                read_val = self.format_value(self.read_results[i][0])
+                correct_val = self.format_value(self.read_check[i][0])
                 str = "FAILED: {0} read value {1} does not match written value {2} during cycle {3} at time {4}n"
                 error = str.format(self.read_results[i][1],
-                                   self.read_results[i][0],
-                                   self.read_check[i][0],
+                                   read_val,
+                                   correct_val,
                                    int((self.read_results[i][2] - self.period) / self.period),
                                    self.read_results[i][2])
                 return(0, error)
@@ -483,5 +509,3 @@ class functional(simulation):
         qbar_name = cell_name + OPTS.hier_seperator + str(storage_names[1])
 
         return (q_name, qbar_name)
-
-

compiler/characterizer/simulation.py

@@ -37,6 +37,8 @@ class simulation():
         self.read_ports = self.sram.read_ports
         self.write_ports = self.sram.write_ports
         self.words_per_row = self.sram.words_per_row
+        self.num_rows = self.sram.num_rows
+        self.num_cols = self.sram.num_cols
         if self.write_size:
             self.num_wmasks = int(math.ceil(self.word_size / self.write_size))
         else:
@@ -536,7 +538,7 @@ class simulation():
         if self.words_per_row > 1:
             self.sram.graph_clear_column_mux(port)
             self.sram.graph_exclude_column_mux(self.bitline_column, port)
-        
+
         # Generate new graph every analysis as edges might change depending on test bit
         self.graph = graph_util.timing_graph()
         self.sram_instance_name = "X{}".format(self.sram.name)

compiler/characterizer/stimuli.py

@@ -374,10 +374,11 @@ class stimuli():
             else:
                 mpi_cmd = ""
 
-            cmd = "{0} {1} -o {3}timing.lis {2}".format(mpi_cmd,
-                                                        OPTS.spice_exe,
-                                                        temp_stim,
-                                                        OPTS.openram_temp)
+            # Xyce can save a raw file while doing timing, so keep it around
+            cmd = "{0} {1} -r {3}timing.raw -o {3}timing.lis {2}".format(mpi_cmd,
+                                                                         OPTS.spice_exe,
+                                                                         temp_stim,
+                                                                         OPTS.openram_temp)
 
             valid_retcode=0
         else:
@@ -399,7 +400,7 @@ class stimuli():
         spice_stdout = open("{0}spice_stdout.log".format(OPTS.openram_temp), 'w')
         spice_stderr = open("{0}spice_stderr.log".format(OPTS.openram_temp), 'w')
 
-        debug.info(3, cmd)
+        debug.info(2, cmd)
         retcode = subprocess.call(cmd, stdout=spice_stdout, stderr=spice_stderr, shell=True)
 
         spice_stdout.close()

compiler/modules/bitcell_base_array.py

@@ -160,6 +160,8 @@ class bitcell_base_array(design.design):
         for row in range(self.row_size):
             for col in range(self.column_size):
                 inst = self.cell_inst[row, col]
+                for pin_name in ["vdd", "gnd"]:
+                    self.copy_layout_pin(inst, pin_name)
                 if row == 2: #add only 1 label per col
                     for pin_name in ["vdd", "gnd"]:
                         self.copy_layout_pin(inst, pin_name)

compiler/sram/sram_config.py

@@ -9,8 +9,6 @@ import debug
 from math import log, sqrt, ceil
 from globals import OPTS
 from sram_factory import factory
-from tech import array_row_multiple
-from tech import array_col_multiple
 
 
 class sram_config:
@@ -24,6 +22,18 @@ class sram_config:
         self.num_spare_rows = num_spare_rows
         self.num_spare_cols = num_spare_cols
 
+        try:
+            from tech import array_row_multiple
+            self.array_row_multiple = array_row_multiple
+        except ImportError:
+            self.array_row_multiple = 1
+        try:
+            from tech import array_col_multiple
+            self.array_col_multiple = array_col_multiple
+        except ImportError:
+            self.array_col_multiple = 1
+
+
         # This will get over-written when we determine the organization
         self.words_per_row = words_per_row
 
@@ -69,7 +79,6 @@ class sram_config:
         OPTS.words_per_row = self.words_per_row
         debug.info(1, "Set SRAM Words Per Row={}".format(OPTS.words_per_row))
 
-
     def recompute_sizes(self):
         """
         Calculate the auxiliary values assuming fixed number of words per row.
@@ -100,11 +109,11 @@ class sram_config:
 
         num_ports = OPTS.num_rw_ports + OPTS.num_r_ports + OPTS.num_w_ports
         if num_ports == 1:
-            if ((self.num_cols + num_ports + self.num_spare_cols) % array_col_multiple != 0):
-                debug.error("Invalid number of cols including rbl(s): {}. Total cols must be divisible by {}".format(self.num_cols + num_ports + self.num_spare_cols, array_col_multiple), -1)
+            if ((self.num_cols + num_ports + self.num_spare_cols) % self.array_col_multiple != 0):
+                debug.error("Invalid number of cols including rbl(s): {}. Total cols must be divisible by {}".format(self.num_cols + num_ports + self.num_spare_cols, self.array_col_multiple), -1)
 
-            if ((self.num_rows + num_ports) % array_row_multiple != 0):
-                debug.error("invalid number of rows including dummy row(s): {}. Total cols must be divisible by {}".format(self.num_rows + num_ports, array_row_multiple), -1)
+            if ((self.num_rows + num_ports) % self.array_row_multiple != 0):
+                debug.error("invalid number of rows including dummy row(s): {}. Total cols must be divisible by {}".format(self.num_rows + num_ports, self.array_row_multiple), -1)
 
     def estimate_words_per_row(self, tentative_num_cols, word_size):
         """

technology/freepdk45/tech/tech.py

@@ -465,6 +465,3 @@ lvs_name = "calibre"
 pex_name = "calibre"
 
 blackbox_bitcell = False
-
-array_row_multiple = 1
-array_col_multiple = 1

technology/scn4m_subm/tech/tech.py

@@ -412,6 +412,3 @@ lvs_name = "netgen"
 pex_name = "magic"
 
 blackbox_bitcell = False
-
-array_row_multiple = 1
-array_col_multiple = 1