Re: ALS trainImplicit performance

I have tested upto 3 billion. ALS scales, you just need to scale your cluster accordingly. More than building the model, it's getting the final recommendations that won't scale as nicely, especially when number of products is huge. This is the case when you are generating recommendations in a batch

ALS trainImplicit performance

Does anyone know about the maximum number of ratings ALS was tested successfully? For example, is 1 billion ratings (nonzero entries) too much for it to work properly? Thank you,