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Ruby: Use block size in configuring directory bits in address

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This patch replaces hard coded values used in Ruby's configuration files
for setting directory bits with values based on the block size in use.
This commit is contained in:
Jason Power ext:(%2C%20Joel%20Hestness%20%3Chestness%40cs.wisc.edu%3E) 2012-10-27 16:01:09 -05:00
parent a4d8996fd9
commit 931ec6b7cc
2 changed files with 10 additions and 10 deletions
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8
configs/ruby/MOESI_hammer.py
View file

@ -145,18 +145,18 @@ def create_system(options, system, piobus, dma_ports, ruby_system):
dir_bits = int(math.log(options.num_dirs, 2))
pf_bits = int(math.log(pf_size.value, 2))
if options.numa_high_bit:
if options.numa_high_bit > 0:
if options.pf_on or options.dir_on:
# if numa high bit explicitly set, make sure it does not overlap
# with the probe filter index
assert(options.numa_high_bit - dir_bits > pf_bits)
# set the probe filter start bit to just above the block offset
pf_start_bit = 6
pf_start_bit = block_size_bits
else:
if dir_bits > 0:
pf_start_bit = dir_bits + 5
pf_start_bit = dir_bits + block_size_bits - 1
else:
pf_start_bit = 6
pf_start_bit = block_size_bits
for i in xrange(options.num_dirs):
#

12
configs/ruby/Ruby.py
View file

@ -173,16 +173,16 @@ def create_system(options, system, piobus = None, dma_ports = []):
total_mem_size = MemorySize('0B')
dir_bits = int(math.log(options.num_dirs, 2))
ruby.block_size_bytes = options.cacheline_size
block_size_bits = int(math.log(options.cacheline_size, 2))
if options.numa_high_bit:
numa_bit = options.numa_high_bit
else:
# if not specified, use the lowest bits above the block offest
if dir_bits > 0:
# add 5 because bits 0-5 are the block offset
numa_bit = dir_bits + 5
else:
numa_bit = 6
# if the numa_bit is not specified, set the directory bits as the
# lowest bits above the block offset bits, and the numa_bit as the
# highest of those directory bits
numa_bit = block_size_bits + dir_bits - 1
for dir_cntrl in dir_cntrls:
total_mem_size.value += dir_cntrl.directory.size.value