ext: add McPAT source

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

1 files changed, 127 insertions, 0 deletions

diff --git a/ext/mcpat/basic_components.cc b/ext/mcpat/basic_components.cc
new file mode 100644
index 000000000..f288d7479
--- /dev/null
+++ b/ext/mcpat/basic_components.cc
@@ -0,0 +1,127 @@
+/*****************************************************************************
+ *                                McPAT
+ *                      SOFTWARE LICENSE AGREEMENT
+ *            Copyright 2012 Hewlett-Packard Development Company, L.P.
+ *                          All Rights Reserved
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.”
+ *
+ ***************************************************************************/
+
+#include <cassert>
+#include <cmath>
+#include <iostream>
+
+#include "basic_components.h"
+
+double longer_channel_device_reduction(
+                enum Device_ty device_ty,
+                enum Core_type core_ty)
+{
+
+        double longer_channel_device_percentage_core;
+        double longer_channel_device_percentage_uncore;
+        double longer_channel_device_percentage_llc;
+
+        double long_channel_device_reduction;
+
+        longer_channel_device_percentage_llc    = 1.0;
+        longer_channel_device_percentage_uncore = 0.82;
+        if (core_ty==OOO)
+        {
+                longer_channel_device_percentage_core   = 0.56;//0.54 Xeon Tulsa //0.58 Nehelam
+                //longer_channel_device_percentage_uncore = 0.76;//0.85 Nehelam
+
+        }
+        else
+        {
+                longer_channel_device_percentage_core   = 0.8;//0.8;//Niagara
+                //longer_channel_device_percentage_uncore = 0.9;//Niagara
+        }
+
+        if (device_ty==Core_device)
+        {
+                long_channel_device_reduction = (1- longer_channel_device_percentage_core)
+                + longer_channel_device_percentage_core * g_tp.peri_global.long_channel_leakage_reduction;
+        }
+        else if (device_ty==Uncore_device)
+        {
+                long_channel_device_reduction = (1- longer_channel_device_percentage_uncore)
+                + longer_channel_device_percentage_uncore * g_tp.peri_global.long_channel_leakage_reduction;
+        }
+        else if (device_ty==LLC_device)
+        {
+                long_channel_device_reduction = (1- longer_channel_device_percentage_llc)
+                + longer_channel_device_percentage_llc * g_tp.peri_global.long_channel_leakage_reduction;
+        }
+        else
+        {
+                cout<<"unknown device category"<<endl;
+                exit(0);
+        }
+
+        return long_channel_device_reduction;
+}
+
+statsComponents operator+(const statsComponents & x, const statsComponents & y)
+{
+        statsComponents z;
+
+        z.access = x.access + y.access;
+        z.hit    = x.hit + y.hit;
+        z.miss   = x.miss  + y.miss;
+
+        return z;
+}
+
+statsComponents operator*(const statsComponents & x, double const * const y)
+{
+        statsComponents z;
+
+        z.access = x.access*y[0];
+        z.hit    = x.hit*y[1];
+        z.miss   = x.miss*y[2];
+
+        return z;
+}
+
+statsDef operator+(const statsDef & x, const statsDef & y)
+{
+        statsDef z;
+
+        z.readAc   = x.readAc  + y.readAc;
+        z.writeAc  = x.writeAc + y.writeAc;
+        z.searchAc  = x.searchAc + y.searchAc;
+        return z;
+}
+
+statsDef operator*(const statsDef & x, double const * const y)
+{
+        statsDef z;
+
+        z.readAc   = x.readAc*y;
+        z.writeAc  = x.writeAc*y;
+        z.searchAc  = x.searchAc*y;
+        return z;
+}