OpenRAM/compiler/tests/21_ngspice_delay_test.py

#!/usr/bin/env python3
"""
Run a regression test on various srams
"""

import unittest
from testutils import header,openram_test
import sys,os
sys.path.append(os.path.join(sys.path[0],".."))
import globals
from globals import OPTS
import debug

class timing_sram_test(openram_test):

    def runTest(self):
        globals.init_openram("config_20_{0}".format(OPTS.tech_name))
        OPTS.spice_name="ngspice"
        OPTS.analytical_delay = False
        OPTS.netlist_only = True

        # This is a hack to reload the characterizer __init__ with the spice version
        from importlib import reload
        import characterizer
        reload(characterizer)
        from characterizer import delay, bitline_delay
        from sram import sram
        from sram_config import sram_config
        c = sram_config(word_size=1,
                        num_words=16,
                        num_banks=1)
        c.words_per_row=1
        c.recompute_sizes()
        debug.info(1, "Testing timing for sample 1bit, 16words SRAM with 1 bank")
        s = sram(c, name="sram1")

        tempspice = OPTS.openram_temp + "temp.sp"
        s.sp_write(tempspice)

        probe_address = "1" * s.s.addr_size
        probe_data = s.s.word_size - 1
        debug.info(1, "Probe address {0} probe data bit {1}".format(probe_address, probe_data))

        corner = (OPTS.process_corners[0], OPTS.supply_voltages[0], OPTS.temperatures[0])
        d = delay(s.s, tempspice, corner)
        bl = bitline_delay(s.s, tempspice, corner)
        import tech
        loads = [tech.spice["msflop_in_cap"]*4]
        slews = [tech.spice["rise_time"]*2]
        data, port_data = d.analyze(probe_address, probe_data, slews, loads)
        bitline_data = bl.analyze(probe_address, probe_data, slews, loads)
        #Combine info about port into all data
        data.update(port_data[0])
        data.update(bitline_data[0])

        if OPTS.tech_name == "freepdk45":
            golden_data = {'delay_hl': [0.20443139999999999],
                         'delay_lh': [0.20443139999999999],
                         'leakage_power': 0.0017840640000000001,
                         'min_period': 0.41,
                         'read0_power': [0.6435831],
                         'read1_power': [0.6233463],
                         'slew_hl': [0.1138734],
                         'slew_lh': [0.1138734],
                         'write0_power': [0.5205761],
                         'write1_power': [0.5213689],
                         'volt_bl': 0.03667602, 
                         'volt_br': 1.056013, 
                         'delay_bl_vth': 0.184373}
        elif OPTS.tech_name == "scn4m_subm":
            golden_data = {'delay_hl': [1.610911],
                         'delay_lh': [1.610911],
                         'leakage_power': 0.0023593859999999998,
                         'min_period': 3.281,
                         'read0_power': [20.763569999999998],
                         'read1_power': [20.32745],
                         'slew_hl': [0.7986348999999999],
                         'slew_lh': [0.7986348999999999],
                         'write0_power': [17.58272],
                         'write1_power': [18.523419999999998],
                         'volt_bl': 1.639692, 
                         'volt_br': 5.06107, 
                         'delay_bl_vth': 1.322235}
        else:
            self.assertTrue(False) # other techs fail

        # Check if no too many or too few results
        self.assertTrue(len(data.keys())==len(golden_data.keys()))
        
        self.assertTrue(self.check_golden_data(data,golden_data,0.25))

        globals.end_openram()

# run the test from the command line
if __name__ == "__main__":
    (OPTS, args) = globals.parse_args()
    del sys.argv[1:]
    header(__file__, OPTS.tech_name)
    unittest.main()