public static void TestMemoryLeak()
{
string outModelFile = "cb_adf_mem_leak.model";
using (var vw = new VowpalWabbit <DataString, DataStringADF>("--cb_adf --rank_all"))
{
DataString[] sampleData = CreateStringCbAdfData(1000);
foreach (DataString example in sampleData)
{
vw.Learn(example, example.ActionDependentFeatures, example.SelectedActionIndex, example.Label);
}
vw.Native.SaveModel(outModelFile);
}
var vwModel = new VowpalWabbitModel(new VowpalWabbitSettings(string.Format("--quiet -t -i {0}", outModelFile))
{
MaxExampleCacheSize = 1024
});
var pool = new VowpalWabbitThreadedPrediction <DataString, DataStringADF>(vwModel);
while (true)
{
vwModel = new VowpalWabbitModel(new VowpalWabbitSettings(string.Format("--quiet -t -i {0}", outModelFile))
{
MaxExampleCacheSize = 1024
});
pool.UpdateModel(vwModel);
}
}
public void ThreadPoolNull()
{
using (var pool = new VowpalWabbitThreadedPrediction())
{
using (var vw = pool.GetOrCreate())
{
Assert.IsNull(vw.Value);
}
pool.UpdateModel(new VowpalWabbitModel(string.Empty));
using (var vw = pool.GetOrCreate())
{
Assert.IsNotNull(vw.Value);
}
}
}
public static void MultiThreadedPrediction()
{
var example = new MyExample { Income = 40, Age = 25 };
var vwModel = new VowpalWabbitModel("-t -i m1.model");
using (var pool = new VowpalWabbitThreadedPrediction<MyExample>(vwModel))
{
// thread-safe
using (var vw = pool.GetOrCreate())
{
// vw.Value is not thread-safe
vw.Value.Predict(example);
}
// thread-safe
pool.UpdateModel(new VowpalWabbitModel("-t -i m2.model"));
}
}
public static void MultiThreadedPrediction()
{
var example = new MyExample {
Income = 40, Age = 25
};
var vwModel = new VowpalWabbitModel("-t -i m1.model");
using (var pool = new VowpalWabbitThreadedPrediction <MyExample>(vwModel))
{
// thread-safe
using (var vw = pool.GetOrCreate())
{
// vw.Value is not thread-safe
vw.Value.Predict(example);
}
// thread-safe
pool.UpdateModel(new VowpalWabbitModel("-t -i m2.model"));
}
}
public static void TestMemoryLeak()
{
string outModelFile = "cb_adf_mem_leak.model";
using (var vw = new VowpalWabbit<DataString, DataStringADF>("--cb_adf --rank_all"))
{
DataString[] sampleData = CreateStringCbAdfData(1000);
foreach (DataString example in sampleData)
{
vw.Learn(example, example.ActionDependentFeatures, example.SelectedActionIndex, example.Label);
}
vw.Native.SaveModel(outModelFile);
}
var vwModel = new VowpalWabbitModel(new VowpalWabbitSettings(string.Format("--quiet -t -i {0}", outModelFile), maxExampleCacheSize: 1024));
var pool = new VowpalWabbitThreadedPrediction<DataString, DataStringADF>(vwModel);
while (true)
{
vwModel = new VowpalWabbitModel(new VowpalWabbitSettings(string.Format("--quiet -t -i {0}", outModelFile), maxExampleCacheSize: 1024));
pool.UpdateModel(vwModel);
}
}
public void ThreadPoolNull()
{
using (var pool = new VowpalWabbitThreadedPrediction())
{
using (var vw = pool.GetOrCreate())
{
Assert.IsNull(vw.Value);
}
pool.UpdateModel(new VowpalWabbitModel(string.Empty));
using (var vw = pool.GetOrCreate())
{
Assert.IsNotNull(vw.Value);
}
}
}