se.py: support specifying multiple programs via command line

This patch allows for specifying multiple programs via command line. It also
adds an option for specifying whether to use of SMT. But SMT does not work for
the o3 cpu as of now.

configs/common/Options.py

@@ -56,6 +56,11 @@ def addCommonOptions(parser):
     parser.add_option("--l3_assoc", type="int", default=16)
     parser.add_option("--cacheline_size", type="int", default=64)
     parser.add_option("--ruby", action="store_true")
+    parser.add_option("--smt", action="store_true", default=False,
+                      help = """
+                      Only used if multiple programs are specified. If true,
+                      then the number of threads per cpu is same as the
+                      number of programs.""")
 
     # Run duration options
     parser.add_option("-m", "--maxtick", type="int", default=m5.MaxTick,

configs/example/se.py

@@ -61,6 +61,52 @@ import CacheConfig
 from Caches import *
 from cpu2000 import *
 
+def get_processes(options):
+    """Interprets provided options and returns a list of processes"""
+
+    multiprocesses = []
+    inputs = []
+    outputs = []
+    errouts = []
+    pargs = []
+
+    workloads = options.cmd.split(';')
+    if options.input != "":
+        inputs = options.input.split(';')
+    if options.output != "":
+        outputs = options.output.split(';')
+    if options.errout != "":
+        errouts = options.errout.split(';')
+    if options.options != "":
+        pargs = options.options.split(';')
+
+    idx = 0
+    for wrkld in workloads:
+        process = LiveProcess()
+        process.executable = wrkld
+
+        if len(pargs) > idx:
+            process.cmd = [wrkld] + [" "] + [pargs[idx]]
+        else:
+            process.cmd = [wrkld]
+
+        if len(inputs) > idx:
+            process.input = inputs[idx]
+        if len(outputs) > idx:
+            process.output = outputs[idx]
+        if len(errouts) > idx:
+            process.errout = errouts[idx]
+
+        multiprocesses.append(process)
+        idx += 1
+
+    if options.smt:
+        assert(options.cpu_type == "detailed" or options.cpu_type == "inorder")
+        return multiprocesses, idx
+    else:
+        return multiprocesses, 1
+
+
 parser = optparse.OptionParser()
 Options.addCommonOptions(parser)
 Options.addSEOptions(parser)
@@ -75,7 +121,7 @@ if args:
     sys.exit(1)
 
 multiprocesses = []
-apps = []
+numThreads = 1
 
 if options.bench:
     apps = options.bench.split("-")
@@ -94,64 +140,21 @@ if options.bench:
             print >>sys.stderr, "Unable to find workload for %s: %s" % (buildEnv['TARGET_ISA'], app)
             sys.exit(1)
 elif options.cmd:
-    process = LiveProcess()
-    process.executable = options.cmd
-    process.cmd = [options.cmd] + options.options.split()
-    multiprocesses.append(process)
+    multiprocesses, numThreads = get_processes(options)
 else:
     print >> sys.stderr, "No workload specified. Exiting!\n"
     sys.exit(1)
 
 
-if options.input != "":
-    process.input = options.input
-if options.output != "":
-    process.output = options.output
-if options.errout != "":
-    process.errout = options.errout
-
-
-# By default, set workload to path of user-specified binary
-workloads = options.cmd
-numThreads = 1
-
-if options.cpu_type == "detailed" or options.cpu_type == "inorder":
-    #check for SMT workload
-    workloads = options.cmd.split(';')
-    if len(workloads) > 1:
-        process = []
-        smt_idx = 0
-        inputs = []
-        outputs = []
-        errouts = []
-
-        if options.input != "":
-            inputs = options.input.split(';')
-        if options.output != "":
-            outputs = options.output.split(';')
-        if options.errout != "":
-            errouts = options.errout.split(';')
-
-        for wrkld in workloads:
-            smt_process = LiveProcess()
-            smt_process.executable = wrkld
-            smt_process.cmd = wrkld + " " + options.options
-            if inputs and inputs[smt_idx]:
-                smt_process.input = inputs[smt_idx]
-            if outputs and outputs[smt_idx]:
-                smt_process.output = outputs[smt_idx]
-            if errouts and errouts[smt_idx]:
-                smt_process.errout = errouts[smt_idx]
-            process += [smt_process, ]
-            smt_idx += 1
-    numThreads = len(workloads)
-
 (CPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options)
 CPUClass.clock = options.clock
-CPUClass.numThreads = numThreads;
+CPUClass.numThreads = numThreads
+
+# Check -- do not allow SMT with multiple CPUs
+if options.smt and options.num_cpus > 1:
+    fatal("You cannot use SMT with multiple CPUs!")
 
 np = options.num_cpus
-
 system = System(cpu = [CPUClass(cpu_id=i) for i in xrange(np)],
                 physmem = SimpleMemory(range=AddrRange("512MB")),
                 membus = CoherentBus(), mem_mode = test_mem_mode)
@@ -161,7 +164,9 @@ if options.fastmem and (options.caches or options.l2cache):
     fatal("You cannot use fastmem in combination with caches!")
 
 for i in xrange(np):
-    if len(multiprocesses) == 1:
+    if options.smt:
+        system.cpu[i].workload = multiprocesses
+    elif len(multiprocesses) == 1:
         system.cpu[i].workload = multiprocesses[0]
     else:
         system.cpu[i].workload = multiprocesses[i]