March 23rd 2010
Debugging software is one of the complex actions in software development. It’s not just about using a debugger, it’s about how do you manage bugs. This book has a pragmatic (amazing, don’t you think?) approach on this matter.
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Loading ...December 8th 2009
Free lunch is over, it’s time to go concurrent. The Art of Concurrency addresses the need for a workflow to develop concurrent/parallel applications.
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(No Ratings Yet) Loading ...July 7th 2009
I’ve played a little bit with Intel Parallel Studio. Let’s say it has been a pleasant trip out in the wildness of multithreaded applications.
Intel Parallel Studio is a set of tools geared toward multithreaded applications. It consists of three Visual Studio plugins (so you need a fully-fledged Visual Studio, not an Express edition):
This is an update of the review I’ve done for the beta version. Since this first review, I’ve tried the official first version.
(5 votes, average: 5.00 out of 5) Loading ...June 9th 2009
Since this post, Intel has officially released Parallel Studio. This is why I’ve published a new, up-to-date review here.
(No Ratings Yet) Loading ...April 7th 2009
Profiling comes in three different flaviors. The first is emulation, where a processor behavior is emulated, the second is sampling, where at regular intervals, the profiler samples the status of a program, and fianlly instrulentation, where the profiler gets information when a subroutine is called and when it returns. As with the Heisenberg uncertainty, profiling changes the exact behavior of your program. This is something you have to remember when analyzing a profile.
Valgrind is an Open Source emulation profiler. It is freely available on standard Linux platforms. As it is an emulation, it is far slower than the actual program. This means that the I/O are underestimated. The advantage is that you can have every detail on the memory behavior (cache misses for instance). Valgrind does not emulate all processors, but you can tweak it to approach your own one.
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(2 votes, average: 4.50 out of 5) Loading ...March 31st 2009
Some months ago, I had a TotalView tutorial, thanks to my job. Now, I’ve actually used it to debug one of my parallel applications and I would like to share my experience with fantastic tool.
First TotalView is not only a parallel debugger available on several Linux and Unix platforms. It also is a memory checker (MemoryScape and the TotalView plugin) as well as a reverse debugger, that is, you can roll back the execution of a program, even after it crashed (where it would be useless with a standard debugger like GDB).
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(2 votes, average: 5.00 out of 5) Loading ... (5.00 out of 5) (5.00 out of 5) (3.00 out of 5)
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