test: add script for running multiple benchmarks and parsing results

test/run_benchmarks.py

@@ -0,0 +1,89 @@
+#!/usr/bin/env python3
+
+# This file is Copyright (c) 2020 Jędrzej Boczar <jboczar@antmicro.com>
+# License: BSD
+
+import re
+import subprocess
+
+from litedram.common import Settings
+
+
+# constructs python regex named group
+def ng(name, regex):
+    return r'(?P<{}>{})'.format(name, regex)
+
+
+class BenchmarkConfiguration(Settings):
+    def __init__(self, sdram_module, sdram_data_width, bist_base, bist_length, bist_random):
+        self.set_attributes(locals())
+        self._settings = {k: v for k, v in locals().items() if v != self}
+
+    def as_args(self):
+        args = []
+        for attr, value in self._settings.items():
+            arg_string = '--%s' % attr.replace('_', '-')
+            if isinstance(value, bool):
+                if value:
+                    args.append(arg_string)
+            else:
+                args.extend([arg_string, str(value)])
+        return args
+
+
+class BenchmarkResult:
+    def __init__(self, config, output):
+        self.config = config
+        self.parse_output(output)
+
+    def parse_output(self, output):
+        bist_pattern = r'{stage}\s+{var}:\s+{value}'
+
+        def find(stage, var):
+            pattern = bist_pattern.format(
+                stage=stage,
+                var=var,
+                value=ng('value', '[0-9]+'),
+            )
+            result = re.search(pattern, output)
+            assert result is not None, 'Could not find pattern in output: %s, %s' % (pattern, output)
+            return int(result.group('value'))
+
+        self.generator_ticks = find('BIST-GENERATOR', 'ticks')
+        self.checker_errors = find('BIST-CHECKER', 'errors')
+        self.checker_ticks = find('BIST-CHECKER', 'ticks')
+
+
+def run_benchmark(args):
+    command = ['python3', 'benchmark.py', *args]
+    proc = subprocess.run(command, capture_output=True, text=True, check=True)
+    return proc.stdout
+
+
+configurations = [
+    BenchmarkConfiguration('MT48LC16M16', 32, 0, 4096,  True),
+    BenchmarkConfiguration('MT48LC16M16', 32, 0, 4096, False),
+    BenchmarkConfiguration('MT48LC16M16', 32, 0,  512, False),
+    BenchmarkConfiguration('MT41K128M16',  8, 0, 1024, False),
+    BenchmarkConfiguration('MT41K128M16', 16, 0, 1024, False),
+    BenchmarkConfiguration('MT41K128M16', 32, 0, 1024, False),
+]
+
+
+results = []
+for config in configurations:
+    args = config.as_args()
+    print('Benchmark: %s' % ' '.join(args))
+
+    result = BenchmarkResult(config, run_benchmark(args))
+    results.append(result)
+
+    print("""\
+  generator_ticks  = {:d}
+  checker_ticks    = {:d}
+  checker_errors   = {:d}
+    """.rstrip().format(
+        result.generator_ticks,
+        result.checker_ticks,
+        result.checker_errors,
+    ))