path_tracer | Accelerated path tracing in pure Ruby | Game Engine library

by Tarptaeya Ruby Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | path_tracer Summary

path_tracer is a Ruby library typically used in Manufacturing, Utilities, Energy, Utilities, Gaming, Game Engine applications. path_tracer has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Accelerated path tracing in pure Ruby

Support

Quality

Security

License

Reuse

Support

path_tracer has a low active ecosystem.

It has 40 star(s) with 1 fork(s). There are 5 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 2 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of path_tracer is current.

Quality

path_tracer has 0 bugs and 0 code smells.

Security

path_tracer has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

path_tracer code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

path_tracer does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

path_tracer releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

path_tracer saves you 231 person hours of effort in developing the same functionality from scratch.

It has 565 lines of code, 49 functions and 10 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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path_tracer Key Features

No Key Features are available at this moment for path_tracer.

path_tracer Examples and Code Snippets

No Code Snippets are available at this moment for path_tracer.

Community Discussions

Trending Discussions on path_tracer

Initializing std::vector outside of main() causes performance drop (multithreading)

QUESTION

Initializing std::vector outside of main() causes performance drop (multithreading)

Asked 2020-Jul-09 at 17:45

I'm writing a path tracer as a programming exercise. Yesterday I finally decided to implement multithreading - and it worked well. However, once I wrapped the test code I wrote inside main() in a separate renderer class, I noticed a significant and consistent performance drop. In short - it would seem that filling std::vector anywhere outside of main() causes threads using its elements to perform worse. I managed to isolate and reproduce the issue with simplified code, but unfortunately I still don't know why it happens or what to do in order to fix it.

Performance drop is quite visible and consistent:

...

ANSWER

Answered 2020-Jul-09 at 17:45

There is a race condition with foo::buf - one thread makes stores into it, anther reads it. This is undefined behaviour, but on x86-64 platform that is harmless in this particular code.

I cannot reproduce your observations on Intel i9-9900KS, both variants print the same per sample stats.

Compiled with gcc-8.4, g++ -o release/gcc/test.o -c -pthread -m{arch,tune}=native -std=gnu++17 -g -O3 -ffast-math -falign-{functions,loops}=64 -DNDEBUG test.cc

With int N = 50000000; each thread operates on its own array of float[N] which occupies 200MB. Such a data set doesn't fit in CPU caches and the program incurs a lot of data cache misses because it needs to fetch the data from memory:

Source https://stackoverflow.com/questions/62818038

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install path_tracer

You can download it from GitHub.
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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