The Palabos library is a framework for general purpose Computational Fluid Dynamics (CFD). Palabos uses a kernel based on the Lattice Boltzmann method. This test profile uses the Palabos MPI-based Cavity3D benchmark.

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

Project Site

Source Repository

Test Created

18 June 2023

Test Maintainer

Michael Larabel 

Test Type


Average Install Time

5 Minutes, 5 Seconds

Average Run Time

5 Minutes, 24 Seconds

Test Dependencies

C/C++ Compiler Toolchain + OpenMPI + CMake + HDF5


10k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page ViewsOpenBenchmarking.orgEventsPalabos Popularity Statisticspts/palabos2023.062023.072023.082023.092023.102023.112023.122024.012024.022024.032024.042024.052024.062024.076001200180024003000
* Uploading of benchmark result data to is always optional (opt-in) via the Phoronix Test Suite for users wishing to share their results publicly.
** Data based on those opting to upload their test results to and users enabling the opt-in anonymous statistics reporting while running benchmarks from an Internet-connected platform.
Data updated weekly as of 20 July 2024.
10032.7%50027.9%10007.8%40031.6%Grid Size Option

Revision History

pts/palabos-1.0.0   [View Source]   Sun, 18 Jun 2023 09:52:02 GMT
Initial commit of Palabos HPC benchmark.

Performance Metrics

Analyze Test Configuration:

Palabos 2.3

Grid Size: 100 metrics for this test profile configuration based on 88 public results since 18 June 2023 with the latest data as of 30 October 2023.

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.

Percentile Rank
# Compatible Public Results
Mega Site Updates Per Second (Average)
< 460
< 84
42 +/- 1
OpenBenchmarking.orgDistribution Of Public Results - Grid Size: 10088 Results Range From 15 To 659 Mega Site Updates Per Second1540659011514016519021524026529031534036539041544046549051554056559061564066548121620

Based on data, the selected test / test configuration (Palabos 2.3 - Grid Size: 100) has an average run-time of 7 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 BenchmarkGrid Size: 100Run-Time48121620Min: 3 / Avg: 6.71 / Max: 13

Tested CPU Architectures

This benchmark has been successfully tested on the below mentioned architectures. The CPU architectures listed is where successful 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
(Many Processors)

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