Laghos (LAGrangian High-Order Solver) is a miniapp that solves the time-dependent Euler equations of compressible gas dynamics in a moving Lagrangian frame using unstructured high-order finite element spatial discretization and explicit high-order time-stepping.

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

Source Repository

Test Created

18 June 2023

Test Maintainer

Michael Larabel 

Test Type


Average Install Time

1 Minute, 44 Seconds

Average Run Time

4 Minutes, 37 Seconds

Test Dependencies

OpenMPI + CMake + C/C++ Compiler Toolchain


10k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page ViewsOpenBenchmarking.orgEventsLaghos Popularity Statisticspts/laghos2023.062023.072023.082023.092023.102023.112023.122024.012024.022024.032024.042024.052024.067001400210028003500
* 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 16 June 2024.
Triple Point Problem47.4%Sedov Blast Wave, ube_922_hex.mesh52.6%Test Option

Revision History

pts/laghos-1.0.0   [View Source]   Sun, 18 Jun 2023 17:46:20 GMT
Initial upload of Laghos.

Performance Metrics

Analyze Test Configuration:

Laghos 3.1

Test: Sedov Blast Wave, ube_922_hex.mesh metrics for this test profile configuration based on 209 public results since 18 June 2023 with the latest data as of 28 May 2024.

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
Major Kernels Total Rate (Average)
< 409
< 236
206 +/- 3
OpenBenchmarking.orgDistribution Of Public Results - Test: Sedov Blast Wave, ube_922_hex.mesh209 Results Range From 54 To 521 Major Kernels Total Rate547698120142164186208230252274296318340362384406428450472494516538510152025

Based on data, the selected test / test configuration (Laghos 3.1 - Test: Sedov Blast Wave, ube_922_hex.mesh) has an average run-time of 6 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 BenchmarkTest: Sedov Blast Wave, ube_922_hex.meshRun-Time48121620Min: 3 / Avg: 5.66 / Max: 14

Based on public results, the selected test / test configuration has an average standard deviation of 0.1%.

OpenBenchmarking.orgPercent, Fewer Is BetterAverage Deviation Between RunsTest: Sedov Blast Wave, ube_922_hex.meshDeviation246810Min: 0 / Avg: 0.07 / Max: 1

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)
ARMv8 64-bit
ARMv8 Neoverse-N1, ARMv8 Neoverse-V1

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