changeset 2763a59c73ff in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=2763a59c73ff
description:
ruby: remove random seed
We no longer use the C library based random number generator: random().
Instead we use the C++ library provided rng. So setting the random
seed for
the RubySystem class has no effect. Hence the variable and the
corresponding
option are being dropped.
diffstat:
configs/ruby/Ruby.py | 4 ----
src/mem/ruby/system/RubySystem.py | 1 -
src/mem/ruby/system/System.cc | 3 ---
src/mem/ruby/system/System.hh | 2 --
4 files changed, 0 insertions(+), 10 deletions(-)
diffs (71 lines):
diff -r a8afeb8bc3f0 -r 2763a59c73ff configs/ruby/Ruby.py
--- a/configs/ruby/Ruby.py Tue Sep 01 15:50:32 2015 -0500
+++ b/configs/ruby/Ruby.py Tue Sep 01 15:50:33 2015 -0500
@@ -82,9 +82,6 @@
parser.add_option("--recycle-latency", type="int", default=10,
help="Recycle latency for ruby controller input buffers")
- parser.add_option("--random_seed", type="int", default=1234,
- help="Used for seeding the random number generator")
-
protocol = buildEnv['PROTOCOL']
exec "import %s" % protocol
eval("%s.define_options(parser)" % protocol)
@@ -236,7 +233,6 @@
ruby._cpu_ports = cpu_sequencers
ruby.num_of_sequencers = len(cpu_sequencers)
- ruby.random_seed = options.random_seed
# Create a backing copy of physical memory in case required
if options.access_backing_store:
diff -r a8afeb8bc3f0 -r 2763a59c73ff src/mem/ruby/system/RubySystem.py
--- a/src/mem/ruby/system/RubySystem.py Tue Sep 01 15:50:32 2015 -0500
+++ b/src/mem/ruby/system/RubySystem.py Tue Sep 01 15:50:33 2015 -0500
@@ -34,7 +34,6 @@
class RubySystem(ClockedObject):
type = 'RubySystem'
cxx_header = "mem/ruby/system/System.hh"
- random_seed = Param.Int(1234, "random seed used by the simulation");
randomization = Param.Bool(False,
"insert random delays on message enqueue times");
block_size_bytes = Param.UInt32(64,
diff -r a8afeb8bc3f0 -r 2763a59c73ff src/mem/ruby/system/System.cc
--- a/src/mem/ruby/system/System.cc Tue Sep 01 15:50:32 2015 -0500
+++ b/src/mem/ruby/system/System.cc Tue Sep 01 15:50:33 2015 -0500
@@ -45,7 +45,6 @@
using namespace std;
-int RubySystem::m_random_seed;
bool RubySystem::m_randomization;
uint32_t RubySystem::m_block_size_bytes;
uint32_t RubySystem::m_block_size_bits;
@@ -60,8 +59,6 @@
: ClockedObject(p), m_access_backing_store(p->access_backing_store),
m_cache_recorder(NULL)
{
- m_random_seed = p->random_seed;
- srandom(m_random_seed);
m_randomization = p->randomization;
m_block_size_bytes = p->block_size_bytes;
diff -r a8afeb8bc3f0 -r 2763a59c73ff src/mem/ruby/system/System.hh
--- a/src/mem/ruby/system/System.hh Tue Sep 01 15:50:32 2015 -0500
+++ b/src/mem/ruby/system/System.hh Tue Sep 01 15:50:33 2015 -0500
@@ -70,7 +70,6 @@
~RubySystem();
// config accessors
- static int getRandomSeed() { return m_random_seed; }
static int getRandomization() { return m_randomization; }
static uint32_t getBlockSizeBytes() { return m_block_size_bytes; }
static uint32_t getBlockSizeBits() { return m_block_size_bits; }
@@ -130,7 +129,6 @@
private:
// configuration parameters
- static int m_random_seed;
static bool m_randomization;
static uint32_t m_block_size_bytes;
static uint32_t m_block_size_bits;
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