ext: add McPAT source

this patch adds the source for mcpat, a power, area, and timing modeling
framework.

1 files changed, 94 insertions, 0 deletions

diff --git a/ext/mcpat/cacti/README b/ext/mcpat/cacti/README
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+-----------------------------------------------------------
+          ____    _    ____ _____ ___    __    ____  
+         / ___|  / \  / ___|_   _|_ _|  / /_  | ___| 
+        | |     / _ \| |     | |  | |  | '_ \ |___ \ 
+        | |___ / ___ \ |___  | |  | |  | (_) | ___) |
+         \____/_/   \_\____| |_| |___|  \___(_)____/ 
+
+
+             A Tool to Model Caches/Memories
+-----------------------------------------------------------
+
+CACTI is an analytical tool that takes a set of cache/memory para-
+meters as input and calculates its access time, power, cycle 
+time, and area.
+CACTI was originally developed by Dr. Jouppi and Dr. Wilton
+in 1993 and since then it has undergone five major 
+revisions.
+
+List of features (version 1-6.5):
+===============================
+The following is the list of features supported by the tool. 
+
+* Power, delay, area, and cycle time model for 
+                  direct mapped caches
+                  set-associative caches
+                  fully associative caches
+                  Embedded DRAM memories
+                  Commodity DRAM memories
+                  
+* Support for modeling multi-ported uniform cache access (UCA)
+  and multi-banked, multi-ported non-uniform cache access (NUCA).
+
+* Leakage power calculation that also considers the operating
+  temperature of the cache.
+  
+* Router power model.
+
+* Interconnect model with different delay, power, and area 
+  properties including low-swing wire model.
+
+* An interface to perform trade-off analysis involving power, delay,
+  area, and bandwidth.
+
+* All process specific values used by the tool are obtained
+  from ITRS and currently, the tool supports 90nm, 65nm, 45nm, 
+  and 32nm technology nodes.
+
+Version 6.5 has a new c++ code base and includes numerous bug fixes.
+CACTI 5.3 and 6.0 activate an entire row of mats to read/write a single
+block of data. This technique improves reliability at the cost of  
+power. CACTI 6.5 activates minimum number of mats just enough to retrieve 
+a block to minimize power.
+
+How to use the tool?
+====================
+Prior versions of CACTI take input parameters such as cache
+size and technology node as a set of command line arguments. 
+To avoid a long list of command line arguments, 
+CACTI 6.5 lets users specify their cache model in a more 
+detailed manner by using a config file (cache.cfg).
+
+-> define the cache model using cache.cfg
+-> run the "cacti" binary <./cacti -infile cache.cfg>
+
+CACTI6.5 also provides a command line interface similar to earlier versions
+of CACTI. The command line interface can be used as
+
+./cacti  cache_size line_size associativity rw_ports excl_read_ports excl_write_ports 
+  single_ended_read_ports search_ports banks tech_node output_width specific_tag tag_width
+  access_mode cache main_mem obj_func_delay obj_func_dynamic_power obj_func_leakage_power
+  obj_func_cycle_time obj_func_area dev_func_delay dev_func_dynamic_power dev_func_leakage_power
+  dev_func_area dev_func_cycle_time ed_ed2_none temp wt data_arr_ram_cell_tech_flavor_in
+  data_arr_peri_global_tech_flavor_in tag_arr_ram_cell_tech_flavor_in tag_arr_peri_global_tech_flavor_in
+  interconnect_projection_type_in wire_inside_mat_type_in wire_outside_mat_type_in
+  REPEATERS_IN_HTREE_SEGMENTS_in VERTICAL_HTREE_WIRES_OVER_THE_ARRAY_in 
+  BROADCAST_ADDR_DATAIN_OVER_VERTICAL_HTREES_in PAGE_SIZE_BITS_in BURST_LENGTH_in
+  INTERNAL_PREFETCH_WIDTH_in force_wiretype wiretype force_config ndwl ndbl nspd ndcm 
+  ndsam1 ndsam2 ecc
+
+For complete documentation of the tool, please refer CACTI-5.3 and 6.0
+technical reports and the following paper,
+"Optimizing NUCA Organizations and Wiring Alternatives for 
+Large Caches With CACTI 6.0", that appears in MICRO 2007.
+
+We are still improving the tool and refining the code. If you
+have any comments, questions, or suggestions please write to
+us.
+
+Naveen Muralimanohar             Jung Ho Ahn        Sheng Li
+naveen.muralimanohar@hp.com      gajh@snu.ac.kr     sheng.li@hp.com
+
+
+
+