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HPE Hawk: Difference between revisions

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** Well defined measure of computational progress (e.g. LUPS, DoF-UPS, Iterations/s or Flop/s)
** Well defined measure of computational progress (e.g. LUPS, DoF-UPS, Iterations/s or Flop/s)
** Ideally, the test case is mostly automated with scripts and does also the evaluation on top with a meaningful result file
** Ideally, the test case is mostly automated with scripts and does also the evaluation on top with a meaningful result file
== TODO ==
* 2019-08-22, niethammer@hlrs.de: missing pbs headers (tm.h, ...)
* 2019-08-18, dick@hlrs.de: (exuberant) ctags missing on frontend, probably available from RHEL repository
* 2019-08-18, dick@hlrs.de: manpages are missing on the frontend
* 2019-08-15, niethammer@hlrs.de: need more explanation on how ''omplace'' works for pinning in the context of SMT (numbering of cores?)
* 2019-08-15, niethammer@hlrs.de: how to run correctly scripts/wrappers with mpirun? (executes script only once per node, but MPI application if called inside multiple times)
* 2019-08-15, niethammer@hlrs.de: missing commands:
**''resize'' (likely coming with xterm)
* 2019-08-15, niethammer@hlrs.de:
** MPT = Message Passing Toolkit
** MPI from the mpt module uses the SGI ABI, MPI from the hmpt module uses the MPICH ABI
** for the MPI compiler wrappers to detect the correct compiler please set MPICC_CC, MPICXX_CXX, MPIF90_F90, MPIF08_F08 to the corresponding compiler commands (2019-08-15, dick@hlrs.de: done)
** Should e.g. applications using cae/platform_mpi use perfboost?
* 2019-08-07, dick@hlrs: hmpt is ABI-compatible with MPICH-derivativs, but not so mpt
** user should know about this!
** @HPE: is hmpt a MPICH-derivative, but not so mpt?
* 2019-08-07, dick@hlrs: unclear that (h)mpt provides MPI lib -> call it "mpi/hmpt" and "mpi/mpt" instead?
* 2019-08-07, dick@hlrs: remove MPI delivered with RHEL
* 2019-08-07, dick@hlrs: Intel loads gcc module -> use (LD_)LIBRARY_PATH intead
* 2019-08-07, dick@hlrs: be careful: cc points to /usr/bin/gcc!
* 2019-08-14, khabi/offenhaeuser@hlrs.de: How to pin OpenMP-threads in hybrid jobs (naive approach pins 2 threads to _same_ core instead of two different), i.e.: how to do aprun -d?

Revision as of 09:27, 29 August 2019

Hawk is the next generation HPC system at HLRS. It will replace the existing HazelHen system. The installation is planed to take place in Q4 2019. For more detailed information see the Hawk installation schedule.

This Page is under construction!

Best Practises for Software Installation

Best practices for software installation on Hawk is describe on a separate (internal) wiki page Software Installation on Hawk.

Access

Login-Node: hawk-tds-login2.hww.hlrs.de

Note: Access to the Hawk TDS is limited to support staff at the moment. Please check the Hawk installation schedule for details about the start of user access.


Batch System

Batch System PBSPro (Hawk)


MPI

In order to use the MPI implementation provided by HPE, please load the Message Passing Toolkit (MPT) module mpt (not ABI-compatible to other MPI implementations) or hmpt (ABI-compatible to MPICH-derivatives). For detailed information see the HPE Message Passing Interface (MPI) User Guide.


Test cases best practices

Test cases will help to identify and determine the scaling/ performance behavior of the new system. Ideally, those test cases can be compared to other systems as well to get a full picture.

To do:

  • Definition of a best practice guideline on how to set up a correct test case
    • Only measurement of time-stepping loop or equivalent excluding the initialization phase or cleanup
    • Well defined measure of computational progress (e.g. LUPS, DoF-UPS, Iterations/s or Flop/s)
    • Ideally, the test case is mostly automated with scripts and does also the evaluation on top with a meaningful result file
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