SmallPT GPU is an OpenCL benchmark that's run with various PTS changes compared to upstream and multiple rendering scenes are available.

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

Project Site

Test Created

6 December 2010

Last Updated

6 November 2013

Test Maintainer

Michael Larabel 

Test Type


Average Install Time

5 Seconds

Average Run Time

2 Minutes

Test Dependencies

C/C++ Compiler Toolchain + OpenGL Utility Kit (GLUT) + OpenCL


150k+ Downloads

Supported Platforms

Public Result Uploads *Reported Test Completions **Reported Installs **Test Profile Page Views ***OpenBenchmarking.orgEventsSmallPT GPU Popularity Statisticspts/smallpt-gpu2011.012011.072011.122012.052012.102013.032013.082014.012014.062014.112015.042015.092016.022016.072016.122017.052017.102018.032018.082019.012019.062019.112020.042020.092021.022021.072021.122022.052022.102023.032023.082024.0113002600390052006500
* 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.
*** Test profile page view reporting began March 2021.
Data updated weekly as of 29 February 2024.
Complex24.8%Caustic9.1%Cornell32.3%Caustic333.8%Scene Option

Revision History

pts/smallpt-gpu-1.3.0   [View Source]   Wed, 06 Nov 2013 22:07:24 GMT
Update build support.

pts/smallpt-gpu-1.2.0   [View Source]   Wed, 11 Apr 2012 13:24:35 GMT
Modifications by Michael Larabel to make SmallptGPU more OpenCL demanding on modern GPUs.

pts/smallpt-gpu-1.1.0   [View Source]   Mon, 06 Dec 2010 15:21:22 GMT
Initial import into

Suites Using This Test


Performance Metrics

Analyze Test Configuration:

SmallPT GPU 1.6pts1

OpenCL Device: GPU - Scene: Complex metrics for this test profile configuration based on 82 public results since 16 February 2014 with the latest data as of 1 October 2023.

Additional benchmark metrics will come after has collected a sufficient data-set.

OpenBenchmarking.orgDistribution Of Public Results - OpenCL Device: GPU - Scene: Complex82 Results Range From 0 To 1696133996 Samples/sec3392268067845360101768040135690720169613400203536080237458760271381440305304120339226800373149480407072160440994840474917520508840200542762880576685560610608240644530920678453600712376280746298960780221640814144320848067000881989680915912360949835040983757720101768040010516030801085525760111944844011533711201187293800122121648012551391601289061840132298452013569072001390829880142475256014586752401492597920152652060015604432801594365960162828864016622113201696134000612182430

Based on data, the selected test / test configuration (SmallPT GPU 1.6pts1 - OpenCL Device: GPU - Scene: Complex) has an average run-time of 3 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 BenchmarkOpenCL Device: GPU - Scene: ComplexRun-Time3691215Min: 1 / Avg: 2.67 / Max: 9

Based on public results, the selected test / test configuration has an average standard deviation of 0.2%.

OpenBenchmarking.orgPercent, Fewer Is BetterAverage Deviation Between RunsOpenCL Device: GPU - Scene: ComplexDeviation3691215Min: 0 / Avg: 0.18 / Max: 12

Notable Instruction Set Usage

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

Instruction Set
Instructions Detected
Used by default on supported hardware.
Last automated analysis: 18 January 2022

This test profile binary relies on the shared libraries,,,,,,,,,,,,,,,

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

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