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Splash-3 Benchmark Suite

Splash-3 is a benchmark suite based on Splash-2 but without data races. It was first presented at ISPASS'16.

The version found here is a refined version of the one used in the ISPASS paper. The main difference is that it is based on the Modified Splash-2 suite, which, among other things, fixes issues related to running Splash-2 on x86-64, as well as lots of warnings. While working on the release version of Splash-3 we realized that we are duplicating a lot of the effort already taken by Modified Splash-2, so we decided to port our Splash-3 patchset on top of Modified Splash-2.

Modified Splash-2 also changes every int to long, which is something that we only partially did for the version discussed in the paper, so we do expect some differences in the memory footprint of the applications. However, everything else, such as the algorithms or the synchronization characteristics of the applications remain unchanged, making the overall performance difference between this version and the ISPASS version minimal.

Installation

There is no need to install Splash-3. All you need to do is set the BASEDIR variable in codes/Makefile.config to point to the full path of the codes directory.

Tarballs

For tarball releases please visit our website at etascale.com.

Citing Splash-3

To properly cite Splash-3 please cite our ISPASS'16 paper.

C. Sakalis, C. Leonardsson, S. Kaxiras, and A. Ros, “Splash-3: A
properly synchronized benchmark suite for contemporary research,”
in Performance Analysis of Systems and Software (ISPASS), 2016
IEEE International Symposium On, IEEE, 2016.

Building and Running Splash-3

In order to build Splash-3, a relatively modern C compiler with C11 support is required. In addition, the M4 macro processor is necessary for generating the source files in the first place. On Ubuntu and similar systems, you can install the m4 and ivtools-dev packages.

If you are wanting to use a cross-compile toolchain, set the TOOLCHAIN_PREFIX environment variable to the prefix required to find the cross-compile tools, e.g. ${TOOLCHAIN_PREFIX}gcc should be found for a cross-compiling gcc.

Some benchmarks expect their inputs to be at very specific paths relative to the working directory, so it is recommended to change the working directory to the benchmark folder before executing it.

Different Versions

The first release of Splash-3 is tagged as v3.0. Small fixes might be published untagged on the master branch, as long as they do not significantly affect the performance or other characteristics of the applications.

The current Splash-3 version, referred to as Splash-3x, is tagged as v3.0X. Splash-3x is based on Splash-2x from the PARSEC benchmark suite, which enables support for bigger input sets. In addition, Splash-3x contains some small changes that enable support for running with a higher number of threads. Note that Splash-2x also includes the fixes from the Modified Splash-2 and that Splash-3x is build on top of Splash-3.

It is also possible to access the original and the Modified Splash-2 codes. They are tagged as v2.0 and v2.0M respectively.

Recommended Inputs

The following are the recommended inputs for running Splash-3 in a simulator. The symbol '#' is a placeholder for the number of threads. These inputs are based on the original Splash-2 characterization paper by Woo et al. [1].

APPS:
./BARNES < inputs/n16384-p#
./FMM < inputs/input.#.16384
./OCEAN -p# -n258
./RADIOSITY -p # -ae 5000 -bf 0.1 -en 0.05 -room -batch
./RAYTRACE -p# -m64 inputs/car.env
./VOLREND # inputs/head 8
./WATER-NSQUARED < inputs/n512-p#
./WATER-SPATIAL < inputs/n512-p#
KERNELS:
./CHOLESKY -p# < inputs/tk15.O
./FFT -p# -m16
./LU -p# -n512
./RADIX -p# -n1048576

Known Issues

  • If OCEAN (either version) segfaults during initialization, try reducing the IMAX and JMAX values in decs.h.
  • It is recommended to change the working directory to the benchmark's directory.

Removing the locks around some of the "benign" races

Due to popular demand, some of the locks around some of the "benign" assignment races have been marked as optional. If you want to disable those locks, pass the option -DWITH_NO_OPTIONAL_LOCKS to the compiler. IT IS HIGHLY DISCOURAGED TO DO SO. The applications have not been tested without those locks, and even the "benign" data races can cause undefined behavior.

PARSEC Inputs

The inputs named 'parsec_' are part of the PARSEC 3.0 benchmark suite and are not covered by the Splash-3 licenses. Instead they are covered by the following license:

Copyright (c) 2006-2012, Princeton University
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of Princeton University nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY PRINCETON UNIVERSITY ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL PRINCETON UNIVERSITY BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Original source code from the ISPASS'16 paper

If you are interested in the exact source code used for the ISPASS'16 paper, please contact Christos Sakalis directly.

[1] Steven Cameron Woo, Moriyoshi Ohara, Evan Torrie, Jaswinder Pal Singh, and Anoop Gupta. 1995. The SPLASH-2 programs: characterization and methodological considerations. In Proceedings of the 22nd annual international symposium on Computer architecture (ISCA '95). ACM, New York, NY, USA, 24-36. DOI=http://dx.doi.org/10.1145/223982.223990