nekRS

nekRS is an open-source Navier Stokes solver based on the spectral element method. NekRS supports both CPU and GPU/accelerator support though this test profile is currently configured for CPU execution. NekRS is part of Nek5000 of the Mathematics and Computer Science MCS at Argonne National Laboratory. This nekRS benchmark is primarily relevant to large core count HPC servers and otherwise may be very time consuming.

To run this test with the Phoronix Test Suite, the basic command is: phoronix-test-suite benchmark nekrs.

Project Site

nek5000.mcs.anl.gov

Source Repository

github.com

Test Created

8 November 2022

Test Maintainer

Michael Larabel 

Test Type

Processor

Average Install Time

2 Minutes, 3 Seconds

Average Run Time

9 Minutes, 18 Seconds

Test Dependencies

OpenMPI + CMake + C/C++ Compiler Toolchain

Accolades

Recently Created Test Profile

Supported Platforms


Revision History

pts/nekrs-1.0.0   [View Source]   Tue, 08 Nov 2022 18:57:06 GMT
Add nekRS scalable CFD benchmark.

Suites Using This Test

HPC - High Performance Computing


Performance Metrics

Analyze Test Configuration:

nekRS 22.0

Input: TurboPipe Periodic

OpenBenchmarking.org metrics for this test profile configuration based on 152 public results since 8 November 2022 with the latest data as of 26 November 2022.

Below is an overview of the generalized performance for components where there is sufficient statistically significant data based upon user-uploaded results. It is important to keep in mind particularly in the Linux/open-source space there can be vastly different OS configurations, with this overview intended to offer just general guidance as to the performance expectations.

Component
Percentile Rank
# Compatible Public Results
FLOP/s (Average)
100th
5
723989000000 +/- 34021786659
97th
3
470187000000 +/- 8741660426
94th
5
457266533333 +/- 8833133669
90th
3
348332333333 +/- 692242973
88th
4
326785666667 +/- 1723990912
87th
5
318287000000 +/- 41837787555
84th
5
303383466667 +/- 707402942
78th
3
266412000000 +/- 36530689618
77th
3
265298555556 +/- 903035950
Mid-Tier
75th
< 259632000000
75th
3
259434444444 +/- 257113320
73rd
3
257848111111 +/- 3089786191
68th
4
184775000000 +/- 60044428
65th
3
182975777778 +/- 182250235
63rd
3
178150222222 +/- 1062510776
61st
3
176770444444 +/- 59851978
59th
5
167625133333 +/- 216332512
56th
3
158471000000 +/- 95262794
54th
3
153143333333 +/- 661983635
52nd
3
151678111111 +/- 84678040
Median
50th
139868000000
50th
3
139390222222 +/- 414173653
46th
3
96367200000 +/- 154376553
42nd
4
93624191667 +/- 163145939
36th
11
73161521212 +/- 1002446125
33rd
3
68561022222 +/- 639368262
32nd
3
64953566667 +/- 142663252
27th
3
54266877778 +/- 32496330
26th
4
53527825000 +/- 3069408096
Low-Tier
25th
< 38372800000
25th
3
38360355556 +/- 11352060
23rd
4
32779950000 +/- 14029612
20th
3
32226477778 +/- 577479556
18th
3
30792966667 +/- 77238225
17th
3
28626522222 +/- 416652048
14th
4
26466100000 +/- 36604007
11th
4
25105300000 +/- 44686911
9th
3
23503533333 +/- 107568691
6th
3
20812000000 +/- 145028652
5th
3
20352266667 +/- 822362331
3rd
4
19511900000 +/- 170895680
OpenBenchmarking.orgDistribution Of Public Results - Input: TurboPipe Periodic132 Results Range From 19363900000 To 748835000000 FLOP/s193639000003395332200048542744000631321660007772158800092311010000106900432000121489854000136079276000150668698000165258120000179847542000194436964000209026386000223615808000238205230000252794652000267384074000281973496000296562918000311152340000325741762000340331184000354920606000369510028000384099450000398688872000413278294000427867716000442457138000457046560000471635982000486225404000500814826000515404248000529993670000544583092000559172514000573761936000588351358000602940780000617530202000632119624000646709046000661298468000675887890000690477312000705066734000719656156000734245578000748835000000714212835

Based on OpenBenchmarking.org data, the selected test / test configuration (nekRS 22.0 - Input: TurboPipe Periodic) has an average run-time of 15 minutes. By default this test profile is set to run at least 3 times but may increase if the standard deviation exceeds pre-defined defaults or other calculations deem additional runs necessary for greater statistical accuracy of the result.

OpenBenchmarking.orgMinutesTime Required To Complete BenchmarkInput: TurboPipe PeriodicRun-Time918273645Min: 3 / Avg: 14.97 / Max: 45

Notable Instruction Set Usage

Notable instruction set extensions supported by this test, based on an automatic analysis by the Phoronix Test Suite / OpenBenchmarking.org analytics engine.

Instruction Set
Support
Instructions Detected
Requires passing a supported compiler/build flag (verified with targets: sandybridge, tigerlake, sapphirerapids, znver2).
Found on Intel processors since Sandy Bridge (2011).
Found on AMD processors since Bulldozer (2011).

 
VZEROUPPER VBROADCASTSD VINSERTF128 VPERMILPD VBROADCASTSS VPERM2F128 VEXTRACTF128
Requires passing a supported compiler/build flag (verified with targets: sandybridge, tigerlake, sapphirerapids, znver2).
Found on Intel processors since Haswell (2013).
Found on AMD processors since Excavator (2016).

 
VPBROADCASTD VPBROADCASTW VPERMQ VPBROADCASTQ VEXTRACTI128 VINSERTI128 VPBROADCASTB VGATHERDPD VPERM2I128 VPGATHERDQ VPGATHERDD VPERMPD VGATHERDPS VPERMD
FMA (FMA)
Requires passing a supported compiler/build flag (verified with targets: sandybridge, tigerlake, sapphirerapids, znver2).
Found on Intel processors since Haswell (2013).
Found on AMD processors since Bulldozer (2011).

 
VFMADD132SD VFNMADD132SD VFMADD213SD VFMADD231SD VFMSUB231SD VFNMADD213SD VFMADD132PD VFNMADD231SD VFMSUB132SD VFMADD213PD VFMADD231PD VFNMADD132PD VFNMADD231PD VFMADD231SS VFMADD231PS VFNMADD213PD VFNMSUB132SD VFMSUB231PD VFMSUB132PD
Advanced Vector Extensions 512 (AVX512)
Requires passing a supported compiler/build flag (verified with targets: sapphirerapids).
 
(ZMM REGISTER USE)
Last automated analysis: 17 November 2022

This test profile binary relies on the shared libraries libnekrs.so, libmpi.so.40, libm.so.6, libc.so.6, libocca.so, libgomp.so.1, libgfortran.so.5, libopen-pal.so.40, libopen-rte.so.40, libhwloc.so.15, libquadmath.so.0, libz.so.1, libudev.so.1.

Tested CPU Architectures

This benchmark has been successfully tested on the below mentioned architectures. The CPU architectures listed is where successful OpenBenchmarking.org result uploads occurred, namely for helping to determine if a given test is compatible with various alternative CPU architectures.

CPU Architecture
Kernel Identifier
Verified On
Intel / AMD x86 64-bit
x86_64
(Many Processors)
ARMv8 64-bit
aarch64
Ampere ARMv8 Neoverse-N1 128-Core, Ampere ARMv8 Neoverse-N1 256-Core

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