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author | Nilay Vaish <nilay@cs.wisc.edu> | 2014-10-11 15:02:23 -0500 |
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committer | Nilay Vaish <nilay@cs.wisc.edu> | 2014-10-11 15:02:23 -0500 |
commit | e8ed7b1d1b5bef31e9874f679a5797c2e00d06f1 (patch) | |
tree | 421c9c50377aa664958685914f5504c4c019e21f /ext/dsent/model/timing_graph/ElectricalNet.cc | |
parent | a098fad174d8559037602b248b8e6f7f46bfebbb (diff) | |
download | gem5-e8ed7b1d1b5bef31e9874f679a5797c2e00d06f1.tar.xz |
ext: add the source code for DSENT
This patch adds a tool called DSENT to the ext/ directory. DSENT
is a tool that models power and area for on-chip networks. The next
patch adds a script for using the tool.
Diffstat (limited to 'ext/dsent/model/timing_graph/ElectricalNet.cc')
-rw-r--r-- | ext/dsent/model/timing_graph/ElectricalNet.cc | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/ext/dsent/model/timing_graph/ElectricalNet.cc b/ext/dsent/model/timing_graph/ElectricalNet.cc new file mode 100644 index 000000000..09baa77e5 --- /dev/null +++ b/ext/dsent/model/timing_graph/ElectricalNet.cc @@ -0,0 +1,73 @@ + +#include "model/timing_graph/ElectricalNet.h" +#include "model/timing_graph/ElectricalLoad.h" + +namespace DSENT +{ + //------------------------------------------------------------------------- + // Electrical Net + //------------------------------------------------------------------------- + + ElectricalNet::ElectricalNet(const String& instance_name_, ElectricalModel* model_) + : ElectricalTimingNode(instance_name_, model_), m_distributed_res_(0), m_distributed_cap_(0) + { + + } + + ElectricalNet::~ElectricalNet() + { + + } + + double ElectricalNet::calculateDelay() const + { + // Remember that this is a pi model, delay is distributed cap * distributed_res / 2 + + // distributed res * (other downstream caps) + return 0.693 * (getTotalDownstreamCap() - m_distributed_cap_ / 2) * m_distributed_res_; + } + + double ElectricalNet::calculateTransition() const + { + return 1.386 * getMaxUpstreamRes() * (m_distributed_cap_ * 0.2 + ElectricalTimingNode::getTotalDownstreamCap()); + } + + double ElectricalNet::getMaxUpstreamRes() const + { + return m_distributed_res_ + ElectricalTimingNode::getMaxUpstreamRes(); + } + + double ElectricalNet::getTotalDownstreamCap() const + { + return m_distributed_cap_ + ElectricalTimingNode::getTotalDownstreamCap(); + } + + void ElectricalNet::setDistributedCap(double distributed_cap_) + { + m_distributed_cap_ = distributed_cap_; + return; + } + + void ElectricalNet::setDistributedRes(double distributed_res_) + { + m_distributed_res_ = distributed_res_; + return; + } + + double ElectricalNet::getDistributedCap() const + { + return m_distributed_cap_; + } + + double ElectricalNet::getDistributedRes() const + { + return m_distributed_res_; + } + + bool ElectricalNet::isNet() const + { + return true; + } + +} // namespace DSENT + + |