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#include "caffe2/core/net.h"
#include "caffe2/core/net_simple.h"
#include <set>
#include <unordered_map>
#include <unordered_set>
#include "caffe2/core/init.h"
#include "caffe2/core/operator.h"
#include "caffe2/core/timer.h"
#include "caffe2/proto/caffe2_pb.h"
#include "caffe2/utils/proto_utils.h"
#include "caffe2/utils/string_utils.h"
C10_DEFINE_string(
caffe2_override_executor,
"",
"Comma-separated list of executor overrides");
namespace caffe2 {
C10_DEFINE_REGISTRY(
NetRegistry,
NetBase,
const std::shared_ptr<const NetDef>&,
Workspace*);
NetBase::NetBase(
const std::shared_ptr<const NetDef>& def,
Workspace* /* unused */)
: external_input_(
def->external_input().begin(),
def->external_input().end()),
external_output_(
def->external_output().begin(),
def->external_output().end()),
name_(def->name()),
net_def_(def) {
static GlobalInitIsCalledGuard guard;
C10_LOG_API_USAGE_ONCE("caffe2.net.create");
// Check that node_name is empty for all ops
for (const OperatorDef& op : def->op()) {
if (op.has_device_option()) {
CAFFE_ENFORCE(
!op.device_option().has_node_name(),
"node_name must be empty for all operators at execution time.");
}
}
// Go through the operators and make sure that blobs are correctly made.
std::set<string> known_blobs(
external_input_.begin(), external_input_.end());
std::set<string> remaining_output(
external_output_.begin(), external_output_.end());
for (const auto& blob : known_blobs) {
remaining_output.erase(blob);
}
for (const OperatorDef& op : def->op()) {
for (const string& in : op.input()) {
if (!known_blobs.count(in)) {
if (external_input_.size()) {
CAFFE_THROW(
"op ",
op.type(),
": Source for input ",
in,
" is unknown for net ",
def->name(),
", operator ",
ProtoDebugString(op));
} else {
// If we are not declaring input and output, we will simply VLOG it
// for debugging purposes.
VLOG(1) << "op " << op.type() << ": input " << in << " is unknown.";
}
}
}
for (const string& out : op.output()) {
known_blobs.insert(out);
remaining_output.erase(out);
}
}
// Finally, check if all declared outputs are being created.
CAFFE_ENFORCE(
remaining_output.size() == 0,
"Some of the blobs are declared as output but never produced by the "
"net ",
def->name(),
", the first one is ",
*remaining_output.begin());
}
bool NetBase::RunAsync() {
for (auto& op : GetOperators()) {
op->ResetEvent();
}
return DoRunAsync();
}
void NetBase::Cancel() {
for (auto& op : GetOperators()) {
op->Cancel();
}
}
namespace {
const std::string kSimpleNet = "simple";
std::vector<NetObserverCreator>* GetNetObserverCreators() {
static std::vector<NetObserverCreator> creators;
return &creators;
}
const std::unordered_map<std::string, std::string>& defaultOverrides() {
// redirecting legacy net types to async_scheduling (except for 'simple');
// async_scheduling checks net type for backward compatibility
static const std::unordered_map<std::string, std::string> overrides = {
{"dag", "async_scheduling"},
{"prof_dag", "async_scheduling"},
{"async_dag", "async_scheduling"},
{"async_polling", "async_scheduling"},
{"async_simple", "simple"}, // "async_simple" impl has been removed.
{"rnn", "simple"}, // "rnn" impl has been removed.
};
return overrides;
}
void ApplyPotentialExecutorOverride(std::string* net_type) {
auto executors = caffe2::split(',', FLAGS_caffe2_override_executor);
CAFFE_ENFORCE(
executors.size() % 2 == 0, "Invalid override executors flag value");
std::unordered_map<std::string, std::string> overrides;
for (const auto& kv : defaultOverrides()) {
overrides[kv.first] = kv.second;
}
for (size_t idx = 0; idx < executors.size(); idx += 2) {
overrides[executors[idx]] = executors[idx + 1];
}
if (overrides.count(*net_type)) {
VLOG(1) << "Overrode net type '" << *net_type << "' with '"
<< overrides[*net_type] << "'";
*net_type = overrides[*net_type];
}
}
} // namespace
void AddGlobalNetObserverCreator(NetObserverCreator creator) {
GetNetObserverCreators()->push_back(creator);
VLOG(1) << "Have set a custom GlobalNetObserverCreator";
}
void ClearGlobalNetObservers() {
GetNetObserverCreators()->clear();
VLOG(1) << "All net observers cleared";
}
unique_ptr<NetBase> CreateNet(const NetDef& net_def, Workspace* ws) {
std::shared_ptr<NetDef> tmp_net_def(new NetDef(net_def));
return CreateNet(tmp_net_def, ws);
}
unique_ptr<NetBase> CreateNet(
const std::shared_ptr<const NetDef>& net_def,
Workspace* ws) {
std::string net_type;
if (net_def->has_type() && !net_def->type().empty()) {
net_type = net_def->type();
} else {
// By default, we will return a simple network that just runs all operators
// sequentially.
net_type = kSimpleNet;
}
ApplyPotentialExecutorOverride(&net_type);
unique_ptr<NetBase> net = NetRegistry()->Create(net_type, net_def, ws);
VLOG(1) << "Adding a global observer to a net";
if (net) {
auto* observer_creators = GetNetObserverCreators();
for (auto& creator : *observer_creators) {
net->AttachObserver(creator(net.get()));
}
}
return net;
}
TaskThreadPoolBase* ExecutorHelper::GetPool(
const DeviceOption& /* unused */) const {
CAFFE_THROW("Not implemented");
}
std::vector<OperatorBase*> ExecutorHelper::GetOperators() const {
CAFFE_THROW("Not implemented");
}
int ExecutorHelper::GetNumWorkers() const {
CAFFE_THROW("Not implemented");
}
// benchmark an individual run so that we can FeedBlobs with new inputs
// no warmup
// return time taken in microseconds
float NetBase::TEST_Benchmark_One_Run() {
Timer timer;
CAFFE_ENFORCE(Run(), "Run has failed.");
return timer.MicroSeconds();
}
std::vector<float> NetBase::TEST_Benchmark(
const int warmup_runs,
const int main_runs,
const bool run_individual) {
LOG(INFO) << "Starting benchmark, running warmup runs";
CAFFE_ENFORCE(
warmup_runs >= 0,
"Number of warm up runs should be non negative, provided ",
warmup_runs);
for (int run_idx = 0; run_idx < warmup_runs; ++run_idx) {
CAFFE_ENFORCE(Run(), "Warmup run ", run_idx, " has failed");
}
LOG(INFO) << "Running main runs";
CAFFE_ENFORCE(
main_runs >= 0,
"Number of main runs should be non negative, provided ",
main_runs);
Timer timer;
for (int run_idx = 0; run_idx < main_runs; ++run_idx) {
CAFFE_ENFORCE(Run(), "Main run ", run_idx, " has failed");
}
auto millis = timer.MilliSeconds();
LOG(INFO) << "Main runs finished. Milliseconds per iter: "
// NOLINTNEXTLINE(bugprone-narrowing-conversions,cppcoreguidelines-narrowing-conversions)
<< millis / main_runs
<< ". Iters per second: " << 1000.0 * main_runs / millis;
if (run_individual) {
LOG(INFO) << "Net does not support per-op benchmark; "
"to run it, switch to a simple net type";
}
// NOLINTNEXTLINE(bugprone-narrowing-conversions,cppcoreguidelines-narrowing-conversions)
return std::vector<float>{millis / main_runs};
}
} // namespace caffe2
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