Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
552 views
in Technique[技术] by (71.8m points)

macros - Disabling OpenMP pragma statements everywhere in my c++ project

In my c++ project, there are several #pragma omp parallel for private(i) statements. When I try to track down bugs in my code using valgrind, the OpenMP adornments result in "possibly lost" memory leak messages. I would like to totally disable all of the aforementioned #pragma statements so that I can isolate the problem.

However, I use omp_get_wtime() in my code, and I do not wish to disable these function calls. So I don't want to totally disable all OpenMP functionality in my project.

How can I simply turn off all the #pragma omp parallel for private(i) statements?

I use Eclipse CDT to automatically manage makefiles, and so I normally compile in release mode by: make all -C release. Ideally, I would like a solution to my problem that permits me to compile using a statement such as make all -C release -TURN_OFF_PARALLEL which would result in all the aforementioned #pragma statements being turned off.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

The simplest solution is to:

  1. disable OpenMP
  2. link the OpenMP stub library functions

In case your OpenMP implementation doesn't provide stub functions, you can create your own copying from Appendix B of the standard.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

1.4m articles

1.4m replys

5 comments

56.8k users

...