OpenEMS is a free and open electromagnetic field solver using the FDTD method. This test profile runs OpenEMS and pyEMS benchmark demos.

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

Project Site

Source Repository

Test Created

15 January 2023

Test Maintainer

Michael Larabel 

Test Type


Average Install Time

1 Minute, 18 Seconds

Average Run Time

55 Minutes, 58 Seconds

Test Dependencies

Python + C/C++ Compiler Toolchain + CMake + C++ Boost + TinyXML + HDF5


20k+ Downloads

Supported Platforms

Public Result Uploads *Reported Installs **Reported Test Completions **Test Profile Page ViewsOpenBenchmarking.orgEventsOpenEMS Popularity Statisticspts/openems2023.012023.022023.032023.042023.052023.062023.072023.082023.092023.102023.112023.122024.012024.022024.032024.042024.052024.062024.0710002000300040005000
* 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 10 July 2024.
pyEMS Coupler59.4%openEMS MSL_NotchFilter40.6%Test Option

Revision History

pts/openems-1.0.0   [View Source]   Sun, 15 Jan 2023 06:31:31 GMT
Initial commit for openEMS/pyEMS benchmark.

Suites Using This Test

Electronic Design

Creator Workloads

Performance Metrics

Analyze Test Configuration:

OpenEMS 0.0.35-86

Test: pyEMS Coupler metrics for this test profile configuration based on 98 public results since 15 January 2023 with the latest data as of 15 November 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
MCells/s (Average)
< 61
< 17
OpenBenchmarking.orgDistribution Of Public Results - Test: pyEMS Coupler98 Results Range From 10 To 240 MCells/s102540557085100115130145160175190205220235250918273645

Based on data, the selected test / test configuration (OpenEMS 0.0.35-86 - Test: pyEMS Coupler) has an average run-time of 30 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: pyEMS CouplerRun-Time20406080100Min: 6 / Avg: 30.02 / Max: 109

Based on public results, the selected test / test configuration has an average standard deviation of 0.3%.

OpenBenchmarking.orgPercent, Fewer Is BetterAverage Deviation Between RunsTest: pyEMS CouplerDeviation246810Min: 0 / Avg: 0.32 / Max: 2

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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