We need to find way to control random seed and amount of threads at least for tests.

[Ivanidzo4ka]

Currently out pipeline.Train function creates
using (var environment = new TlcEnvironment())
which is nice, but it doesn't specify seed which become random and concurrency which force algorithms to use all threads available on machine. Which can result in different metrics, predictions and any other stuff we assert in tests.

[Ivanidzo4ka]

https://ci2.dot.net/job/Private/job/dotnet_machinelearning/job/master/job/windows_nt_release_prtest/588/testReport/junit/(root)/(empty)/Microsoft_ML_Scenarios_ScenariosTests_TrainAndPredictIrisModelWithStringLabelTest/
as example.

[GalOshri]

Related to #9

[TomFinley]

Hmm, yes. In this case, I suppose, Rand and ConcurrencyFactor.

Hi @glebuk , hi @KrzysztofCwalina ... here's another issue to add to the pile of those that could be easily addressed just by exposing the existing functionality of IHostEnvironment.

[shauheen]

closing as some solution was merged and the underlying issue will be handled differently after #371 gets implemented.