Are you using Scala in a distributed enviroment or in a standalone mode ? Natu
On Thu, Dec 11, 2014 at 8:23 PM, ll <duy.huynh....@gmail.com> wrote: > hi.. i'm converting some of my machine learning python code into scala + > spark. i haven't been able to run it on large dataset yet, but on small > datasets (like http://yann.lecun.com/exdb/mnist/), my spark + scala code > is > much slower than my python code (5 to 10 times slower than python) > > i already tried everything to improve my spark + scala code like > broadcasting variables, caching the RDD, replacing all my matrix/vector > operations with breeze/blas, etc. i saw some improvements, but it's still > a > lot slower than my python code. > > why is that? > > how do you improve your spark + scala performance today? > > or is spark + scala just not the right tool for small to medium datasets? > > when would you use spark + scala vs. python? > > thanks! > > > > -- > View this message in context: > http://apache-spark-user-list.1001560.n3.nabble.com/why-is-spark-scala-code-so-slow-compared-to-python-tp20636.html > Sent from the Apache Spark User List mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@spark.apache.org > For additional commands, e-mail: user-h...@spark.apache.org > >
