Get Performance on Intel® Xeon Phi™ with Allinea MAP and Allinea DDT

Discovering bottlenecks without pain

… we develop new antibiotics faster than bacteria develop resistance

... every household can prototype and evolve their own 3D-printed designs

… accurate simulation of the natural world is taken for granted

In my Parallel Universe…

… create parallel development tools for scientists:

So I decided to…

We’re accelerating the pace of scientific progress

HPC on the critical path to progress

Single Core Era Multi-Core Era Many-Core Era

Constraints :- Power- Complexity of algorithms

Constraints :- Power- Parallel software

availability- Scalability

Constraints :- Programming models

Per

form

ance

Time(years)

• Parallel profiler designed for:

‒ C/C++, Fortran

‒ MPI code

Interdependent or independent processes

‒ Multithreaded code

Monitor the main threads for each process

‒ Accelerated codes

GPUs, Intel® Xeon Phi™

• Improve productivity :‒ Helps you detect performance issues quickly and easily

‒ Tells you immediately where your time is spent in your source code

‒ Helps you to optimize your application efficiently

Allinea MAPIncrease application performance

• Support for I/O metrics

‒ I/O can be a major bottleneck in HPC systems

‒ Find the optimal configuration for your file system.

Benefit : Broader profiling and analysis capabilities to solve

even more performance issues.

• Support for Intel® Xeon Phi™

‒ Already supported on Allinea DDT

‒ Officially extended to profiling

Benefit : Ensure you are getting the best performance from

new technology.

Allinea MAP 4.2New features in 2013

NEW

Optimizing for Intel® Xeon Phi™Where do you start?

“Code that’s well-optimized for the host usually performs pretty well on the cards”

- Almost everybody

Optimizing for Intel® Xeon Phi™But what matters?

Vectorization

Other stuff

Performance

Optimizing for Intel® Xeon Phi™Is my code well-vectorized?

… maybe?

Allinea Performance ReportsIs my code well-vectorized?

Optimizing for Intel® Xeon Phi™Is my code well-vectorized?

… maybe?

Optimizing for Intel® Xeon Phi™Is my code well-vectorized?

… maybe?

Not in this loop

(16.5% of total time)

• Full, graphical debugger designed for :

‒ C/C++, Fortran, Intel® Xeon Phi™, UPC, …

‒ MPI, OpenMP and mixed-mode code

• Unified interface with Allinea MAP :

‒ Just what you need when you’ve added

OpenMP and now everything segfaults!

‒ One interface eliminates learning curve

‒ Spend more time on your results

• Slash your time to develop :

‒ Reproduces and triggers your bugs instantly

‒ Helps you easily understand where issues come from quickly

‒ Helps you to fix them as swiftly as possible

Allinea DDTUnified interface for debugging

Allinea at the forefront of science with COSMOS and Intel® Xeon Phi™

“While I was porting CAMB to offload certain parts of it to Intel® Xeon

Phi™, I wasted weeks debugging it because the offloads were basically

opaque. I only had print statements to help me.”

Allinea at the forefront of science with COSMOS and Intel® Xeon Phi™

“Using DDT's new offload debugging I can now look at the offload

code and look at the state of the array on the Intel® Xeon Phi™ side

before it is manipulated”

Allinea at the forefront of science with COSMOS and Intel® Xeon Phi™

Fix is easy - either set NOCOPY->IN or just set the thing

to zero on the MIC side which is probably cheaper.”

Allinea at the forefront of science with COSMOS and Intel® Xeon Phi™

“I’m now using MAP – it shows that the code is fairly well vectorised at 70%.

This will have to be improved a bit to get the most out of the coprocessors.”

• Ten years of high-quality development tools

‒ Leading in HPC software tools market worldwide

‒ Global customer base

• Making parallel programming accessible to the widest range of

scientists and programmers

‒ Design an unrivaled productive and easy-to-use development

environment…

‒ … To help you reach the highest level of performance and scalability

‒ Define a new standard of customer support

Allinea Software

Summary

The premier Intel® Xeon Phi™ development environment from Allinea

– Is your code ready for Intel® Xeon Phi™? Run a Performance Report!

– See which loops are important to vectorize with Allinea MAP

– Stay productive with full profiling and debugging on both host and

coprocessor

– Powerful unified interface with industry-leading technical support to help

you get the job finished faster

Visit us at our booth #1719 to see this in action!

Enter our Performance Reports competition to win a Kindle Fire every day!