HPC Tuning Workshop Tue, Dec 5  – Thu, Dec 7, 2017 IT Center RWTH Aachen University sponsored by:

Introduction

This year’s aiXcelerate HPC Tuning Workshop will focus on two topics:

1. MPI+OPA: Tuning of parallel programs employing message passing with MPI and running on the Intel OmniPath fabric.
2. KNL: Tuning for Intel’s Xeon Phi new many core processor

The nodes of Claix, the latest RWTH Aachen University’s Supercomputer, are equipped with Intel Broadwell processors and connected through a network with the Intel OmniPath architecture (OPA). Claix has recenlty been complemented by 16 nodes containing an Intel’s Xeon Phi 7210 processor – code named Knights Landing (KNL). At the Jülich Supercomputer Centre a cluster called “Booster” will soon be installed which will contain Intel’s Xeon Phi many core 7250-F processors and an Intel OmniPath fabric. The KNL nodes at Aachen can well be used to prepare and tune programs for Booster.

Researchers from FZ Jülich and RWTH with high demand for compute power can apply for resources on these systems as part of the JARA-HPC partition (>>> more… ).
Researchers from all over Germany can apply for resources on Claix (>>> more… ).

The workshop will consist of presentations open to a broader auditorium and of a hands-on tuning workshop for a limited number of selected compute projects.
Presentations will be given in English.

We are proud to announce Michael Klemm and Christopher Dahnken, two HPC performance experts from Intel, who will give presentations and support you with your tuning efforts. They will be complemented by experts of the HPC Team of the IT Center at RWTH Aachen University.

Materials

1. Agenda
2. Michael Klemm (Intel): MPI & ITAC
3. Dirk Schmidl (RWTH): NonIntel Tools
4. Hristo Iliev (RWTH): Open MPI
5. Paul Kapinos (RWTH): RWTH Compute Cluster environment
6. Christopher Dahnken (Intel): Intel Xeon Phi Architecture
7. Christopher Dahnken (Intel): OpenMP SIMD
8. Michael Klemm (Intel): VTune, also for MPI

aiXcelerate – presentations

1. MPI+OPA: On Tue morning, Dec 5, we will start at 10:00 with presentations on MPI programming and tuning using Intel MPI on the OmniPath fabric (OPA).
   Please  register here for the presentations on MPI+OPA
2. KNL: On Wed morning, Dec 6, we will start at 10:00 with presentations on Xeon Phi (KNL) programming and tuning using Intel compiler and tools.
   Please  register here for the presentations on KNL

aiXcelerate – tuning workshop

In the afternoon after the presentations on Tue and Wed and also throughout Thu, Dec 7, we provide you with hands-on opportunity to adapt, analyze and tune your performance critical applications on Claix, with its Broadwell and Xeon Phi processors connected through the OmniPath Fabric.

Participation in the presentations is a prerequisite for participation in tuning workshop.

Attendees are kindly requested to prepare and bring in their own code. It is assumed that you have a good working knowledge with MPI and/or OpenMP, and C/C++ or Fortran, whatever your compute project employs. To maximize the efficiency of the workshop, we would like to ask you to prepare one or more test cases that reflect typical production runs, but do not take too long to execute – in the ideal case, a run should not take more than 5 to 10 minutes to finish. Members of the local HPC team will support  every accepted project in porting the code to Claix. By the start of the workshop the code should be ready to be analyzed.

If you plan to participate in the tuning activities please contact us by sending an email to hpcevent@itc.rwth-aachen.de.

Workshop participants are invited to take part in the social dinner on Wednesday evening in Restaurant Palladion .-please note if you like to take part in your registration. Thank you.

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