Private:Technical - Revision history

Aah10 at 09:02, 25 March 2011

2011-03-25T09:02:28Z

Mspenard at 20:58, 28 February 2011

2011-02-28T20:58:12Z

Aah10 at 19:50, 17 August 2010

2010-08-17T19:50:20Z

Aah10 at 00:52, 6 August 2010

2010-08-06T00:52:43Z

Aah10 at 04:26, 20 June 2010

2010-06-20T04:26:01Z

Aah10 at 20:18, 30 March 2010

2010-03-30T20:18:36Z

Aah10 at 08:23, 30 March 2010

2010-03-30T08:23:53Z

Aah10 at 05:26, 29 March 2010

2010-03-29T05:26:57Z

Aah10 at 02:14, 29 March 2010

2010-03-29T02:14:09Z

Aah10 at 07:00, 19 March 2010

2010-03-19T07:00:43Z

← Older revision		Revision as of 09:02, 25 March 2011
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	where -r is for the rate and -s for the size.		where -r is for the rate and -s for the size.
		+
		+	You may need to stick to a certain order for the parameters when working under Linux. For example, to encode an H.264 video from a BMP sequence using libx264, the following can be used:
		+
		+	<pre>
		+	ffmpeg -i color-cam0-f%03d.bmp -vcodec libx264 -vpre medium -vpre main -f image2 -r 15 -psnr -qphist output.mp4
		+	</pre>
		+
		+	Notice that the input option "-i" comes first, followed by the parameters for the encoder.

← Older revision		Revision as of 20:58, 28 February 2011
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	* [http://www.cag.csail.mit.edu/~rinard/eps_into_latex/figure.html Including Adobe Illustrator and PowerPoint Figures Into a Latex File]		* [http://www.cag.csail.mit.edu/~rinard/eps_into_latex/figure.html Including Adobe Illustrator and PowerPoint Figures Into a Latex File]
		+
		+	== FFMPEG ==
		+	Given a series of BMP files, where each each frame is named from let's say 000 to 999, it is possible to create a video out of them:
		+
		+	ffmpeg.exe -f image2 -r 25 -s 1024x768 -i color-cam6-f%03d.bmp camera6.mpg (http://ffmpeg.org/faq.html#SEC14)
		+
		+	where -r is for the rate and -s for the size.

← Older revision		Revision as of 19:50, 17 August 2010
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	* [http://joshstaiger.org/archives/2005/07/bash_profile_vs.html .bash_profile vs. .bashrc]		* [http://joshstaiger.org/archives/2005/07/bash_profile_vs.html .bash_profile vs. .bashrc]
		+
		+	* [http://www.ibm.com/developerworks/library/l-bash-test.html Bash test and comparison functions]

	* Removing .svn directories in a checked out project (disconnecting the local copy from SVN)		* Removing .svn directories in a checked out project (disconnecting the local copy from SVN)

← Older revision		Revision as of 00:52, 6 August 2010
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	* [http://joshstaiger.org/archives/2005/07/bash_profile_vs.html .bash_profile vs. .bashrc]		* [http://joshstaiger.org/archives/2005/07/bash_profile_vs.html .bash_profile vs. .bashrc]
		+
		+	* Removing .svn directories in a checked out project (disconnecting the local copy from SVN)
		+
		+	<pre>
		+	find /path/to/destdir -name '.svn' -exec rm -r {} \;
		+	</pre>

	* Using the Linux top utility		* Using the Linux top utility

← Older revision		Revision as of 04:26, 20 June 2010
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	* [https://help.ubuntu.com/community/SSHFS Mounting a remote file system using SSHFS and FUSE]		* [https://help.ubuntu.com/community/SSHFS Mounting a remote file system using SSHFS and FUSE]
		+
		+	* [http://joshstaiger.org/archives/2005/07/bash_profile_vs.html .bash_profile vs. .bashrc]

	* Using the Linux top utility		* Using the Linux top utility

← Older revision		Revision as of 20:18, 30 March 2010
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	* [http://www.ibm.com/developerworks/aix/library/au-learningdoxygen/ Learning doxygen for source code documentation]		* [http://www.ibm.com/developerworks/aix/library/au-learningdoxygen/ Learning doxygen for source code documentation]
		+
		+	* [http://linuxdevcenter.com/lpt/a/3658 C++ Memory Management: From Fear to Triumph]
		+
		+	* [http://www.yolinux.com/TUTORIALS/C++MemoryCorruptionAndMemoryLeaks.html C/C++ Memory Corruption And Memory Leaks]

	* '''Dealing with: terminate called after throwing an instance of 'std::bad_alloc''''		* '''Dealing with: terminate called after throwing an instance of 'std::bad_alloc''''

@@ Line 48: / Line 48: @@
 * [http://www.ibm.com/developerworks/aix/library/au-learningdoxygen/ Learning doxygen for source code documentation]
-* Dealing with: terminate called after throwing an instance of 'std::bad_alloc'
+* '''Dealing with: terminate called after throwing an instance of 'std::bad_alloc''''
 std::bad_alloc is an exception that gets thrown by 'new' when it can't allocate the memory you requested. Something (very likely the standard library containers if you are using them) is requesting memory, and that memory can't be allocated.
 You should either change your memory usage patterns so that enough memory is available to satisfy all the requests, or catch bad_alloc and handle it in some appropriate way (or preferably, both).

← Older revision		Revision as of 05:26, 29 March 2010
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	* [http://www.ibm.com/developerworks/aix/library/au-learningdoxygen/ Learning doxygen for source code documentation]		* [http://www.ibm.com/developerworks/aix/library/au-learningdoxygen/ Learning doxygen for source code documentation]
		+
		+	* Dealing with: terminate called after throwing an instance of 'std::bad_alloc'
		+
		+	std::bad_alloc is an exception that gets thrown by 'new' when it can't allocate the memory you requested. Something (very likely the standard library containers if you are using them) is requesting memory, and that memory can't be allocated.
		+
		+	You should either change your memory usage patterns so that enough memory is available to satisfy all the requests, or catch bad_alloc and handle it in some appropriate way (or preferably, both).

← Older revision		Revision as of 02:14, 29 March 2010
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	* [https://help.ubuntu.com/community/SSHFS Mounting a remote file system using SSHFS and FUSE]		* [https://help.ubuntu.com/community/SSHFS Mounting a remote file system using SSHFS and FUSE]
		+
		+	* Using the Linux top utility
		+
		+	To investigate the per-thread CPU usage on Linux, the recommended tool is top with the -H option, which provides an additional thread for information not provided by top in the default usage. The output of top -H on Linux shows the breakdown of the CPU usage on the machine by individual threads.
		+
		+	To enable or display stats press the number 1 and you should see individual CPU core stats.
		+
		+	Sometimes, we are only interested on several processes only, maybe just 4 or 5 of the whole existing processes. For example, if you want monitor process identifier (PID) 4360 and 4358, you type:
		+
		+	<pre>
		+	$ top -p 4360,4358
		+	</pre>
		+
		+	OR
		+
		+	<pre>
		+	$ top -p 4360 -p 4358
		+	</pre>
		+
		+	Seems easy, just use -p and list all the PIDs you need, each separated with comma or simply use -p multiple times coupled with the target PID.
		+
		+	Another possibility is just monitoring process with certain user identifier (UID). For this need, you can use -u or -U option. Assuming user "johndoe" has UID 500, you can type:
		+
		+	<pre>
		+	$ top -u johndoe
		+	</pre>
		+
		+	OR
		+
		+	<pre>
		+	$ top -u 500
		+	</pre>
		+
		+	OR
		+
		+	<pre>
		+	$ top -U johndoe
		+	</pre>
		+
		+	The conclusion is, you can either use the plain user name or the numeric UID.
		+

	* [http://www.techiesabode.com/article/read_article_w.php?article_id=2 Maximum Number of open files and file descriptors in Linux]		* [http://www.techiesabode.com/article/read_article_w.php?article_id=2 Maximum Number of open files and file descriptors in Linux]

← Older revision		Revision as of 07:00, 19 March 2010
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	* [http://www.augustcouncil.com/~tgibson/tutorial/arr.html Basic Arrays]		* [http://www.augustcouncil.com/~tgibson/tutorial/arr.html Basic Arrays]
		+
		+	* [https://computing.llnl.gov/tutorials/pthreads/ POSIX Threads Programming]

	* Threading with Boost - [http://antonym.org/2009/05/threading-with-boost---part-i-creating-threads.html Part I: Creating Threads], [http://antonym.org/2010/01/threading-with-boost---part-ii-threading-challenges.html Part II: Threading Challenges]		* Threading with Boost - [http://antonym.org/2009/05/threading-with-boost---part-i-creating-threads.html Part I: Creating Threads], [http://antonym.org/2010/01/threading-with-boost---part-ii-threading-challenges.html Part II: Threading Challenges]