Spark Summit East Keynote by Ion Stoica A long-standing grand challenge in computing is to enable machines to act autonomously and intelligently: to rapidly and repeatedly take appropriate actions based on information in the world around them. To address this challenge, at UC Berkeley we are starting a new five year effort that focuses on the development of data-intensive systems that provide Real-Time Intelligence with Secure Execution (RISE). Following in the footsteps of AMPLab, RISELab is an interdisciplinary effort bringing together researchers across AI, robotics, security, and data systems. In this talk I’ll present our research vision and then discuss some of the applications that will be enabled by RISE technologies.

1. RISELab:
Enabling Intelligent Real-time
Decisions
Ion Stoica
February 8, 2017

2. Berkeley’s AMPLab (2011-2016)
2
Algorithms
Machines People
Goal: Nextgeneration of open source
data analytics stack for industry & academia
BerkeleyDataAnalytics Stack (BDAS)

3. Berkeley’s AMPLab (2011-2016)
3
Algorithms
Machines People
Goal: Nextgeneration of open source
data analytics stack for industry & academia
BerkeleyDataAnalytics Stack (BDAS)
…

4. RISE: Real-time Intelligent
Secure Execution

5. From batch data to advanced analytics
AMPLab
5
From live data to real-time decisions
RISELab

6. RISE Lab (2017-2022)
12 faculty across AI, systems, security, and architectures
11 Founding sponsors
6

7. Why?
Data only as valuable as the decisions it enables
7

8. Why?
What does this mean?
• Faster decisions better than slower decisions
• Decisions on fresh data better than decisions on stale data
• Decisions on personalized data better than on aggregate data
8
Data only as valuable as the decisions it enables

9. Goal
Real-time decisions
on live data
with strong security
9
decide in ms
the current stateof theenvironment
privacy, confidentiality, integrity

10. Typical decision system
Decision System
Query
Decision
Environment
+
sensors &
actuators
Observations, Feedback
Preprocess Intermediate
data
Decision
Engine

11. Decision
Query
Decision
Engine
Preprocess Intermediate
data
Environment
+
sensors &
actuators
Typical decision system
Decision System
Observations, Feedback
Live
Update latency
(e.g., ~1 seconds)

12. Decision
Query
Decision
Engine
Preprocess Intermediate
data
Environment
+
sensors &
actuators
Typical decision system
Decision System
Observations, Feedback
Live
Update latency
(e.g., ~1 seconds)
Secure
Real-time
decision latency
(e.g., ~10 ms)

13. Example of decision systems
Decision System
Query
Decision
Training
Models
(diff.tradeoffs
complexity/
accuracy)
Model
Serving
Feedback
Observations, Feedback
ML Pipeline
(e.g., Clipper +
Spark/Tensorflow)
Decision System
Obs.
Action
Update
Policy
Policy
obs à
action
Query
Policy
Observations, Rewards
Reinforcement
Learning Systems
(e.g., Ray)
Pre-
process
Interm-
ediate
Data
Decision
Engine

14. What else do we want from decisions?
Intelligent:complexdecisions in uncertain environments
Robust: handle complexnoise, unforeseeninputs, failures
Explainable:ability to explainnon-obvious decisions

15. Goal
Develop open source
platforms, tools, and algorithms for
intelligent real-time decisions on live-data

16. Some Proposed Research
Secure Real-time Decisions Stack (SRDS)
• Open source platform to develop of RISE apps
• Secure from ground up
• Reinforcement Learning (RL) as one of key app patterns
Learning control hierarchies: speeduplearning, training
Shared learning: learn over confidential data
16

17. Secure Real-time Decisions Stack (SRDS)
• Open source platform to develop of RISE apps
• Secure from ground up
• Reinforcement Learning (RL) as one of key app patterns
Learning control hierarchies: speeduplearning, training
Shared learning: learn over confidential data
17
Some Proposed Research

18. Secure Real-time Decision Stack (SRDS)
scheduler object store
RISE μkernel
Ray Clipper …
Ground(data contextservice)
Time
Machine

19. scheduler object store
RISE μkernel
Ray Clipper …
Ground(data contextservice)
Time
Machine
Minimalist executionengine:
• Support both data flow and task-parallel execution models
• High-throughput, low-latency: ~ 1M tasks/sec @ ms latency
Secure Real-time Decision Stack (SRDS)

20. scheduler object store
RISE μkernel
Ray Clipper …
Ground(data contextservice)
Time
Machine
Central repositoryfor models,APIs to capture the context
in whichdata gets used and produced
Status:ongoing project with industry partners
Secure Real-time Decision Stack (SRDS)

21. scheduler object store
RISE μkernel
Ray Clipper …
Ground(data contextservice)
Time
Machine
Replaying of apps at fine granularity
• Simplify development, debugging
• Robustness: replay against perturbed inputs
• Explainability: identify inputs causing decision
• Security: confirm vulnerabilities, test security
patches, compliance auditing
Secure Real-time Decision Stack (SRDS)

22. scheduler object store
RISE μkernel
Ray Clipper …
Ground(data contextservice)
Time
Machine
Dramatically simplify development of RISE applications
• Apache Spark: improve latency and security
• Clipper: model serving for Apache Spark, Scikit learn, etc
• Ray: framework for RL applications
Secure Real-time Decision Stack (SRDS)

23. ImprovingApache Spark
Drizzle
• Decrease latency of Structured Streaming and ML algorithms by ~10x
• Techniques: group scheduling, shared variables
23

24. StreamingLatency:YCSB benchmark
24
0
500
1000
1500
2000
1 2 4 8 12 16 20 24
MedianEventLatency
(ms)
Throughput (Million events/s)
Spark Drizzle Flink Drizzle-Opt
Drizzle-Opt: Reduce-by on mapper side

25. StreamingLatency:YCSB benchmark
25
0
500
1000
1500
2000
1 2 4 8 12 16 20 24
MedianEventLatency
(ms)
Throughput (Million events/s)
Spark Drizzle Flink Drizzle-Opt
Drizzle-Opt: Reduce-by on mapper side

26. StreamingLatency:YCSB benchmark
26
0
500
1000
1500
2000
1 2 4 8 12 16 20 24
MedianEventLatency
(ms)
Throughput (Million events/s)
Spark Drizzle Flink Drizzle-Opt
Drizzle-Opt: Reduce-by on mapper side

27. StreamingLatency:YCSB benchmark
27
0
500
1000
1500
2000
1 2 4 8 12 16 20 24
MedianEventLatency
(ms)
Throughput (Million events/s)
Spark Drizzle Flink Drizzle-Opt
Drizzle-Opt: Reduce-by on mapper side

28. StreamingLatency:YCSB benchmark
28
0
500
1000
1500
2000
1 2 4 8 12 16 20 24
MedianEventLatency
(ms)
Throughput (Million events/s)
Spark Drizzle Flink Drizzle-Opt
Drizzle-Opt: Reduce-by on mapper side
15x

29. MLlib: SGD Performance
29
0
20
40
60
4 8 16 32 64 128
Time/iter(ms)
Machines
Spark Drizzle

30. MLlib: SGD Performance
30
0
20
40
60
4 8 16 32 64 128
Time/iter(ms)
Machines
Spark Drizzle
6x

31. ImprovingApache Spark
Drizzle
• Decrease latency of Structured Streaming and ML algorithms by ~10x
• Techniques: group scheduling, shared variables
• Some of these techniques will make their way to Apache Spark
Opaque
• Full data encryption, authentication, and verification (Intel’s SGX)
• Oblivious mode: hide data access pattern
• Support most SparkSQL functionality
• See Wenting’s talk later
31

32. RISELab
Already promising results
Expect muchmore over the next five years!
32
Goal: Develop open source platforms,tools, and
algorithms for intelligent real-timedecisions on live-
data

33. Thank you