The idea was to introduce Fedora to the new students and various tools which they can use to develop their skills. This time we tried to get only interested students into the workshops.

Day1: We started around 11am in the seminar hall, had around 45 students attending the first talk on FOSS in general and then about Fedora. Existing contributors like Sayan, Biraj also talked about their experience, how they started their journey.
After lunch break we started python workshop, we had to introduce the terminal and various commands to them before I started talking about python. Most of them were being able to catch up and solve the small problems I gave. We closed for the day around 5:30pm. I stayed back in the Boy’s Hostel and had chats about various projects students are working on.

Day2:
Though we started a bit early but we had almost every participant from previous day. First workshop of the day was on Vi.
In the second half we again started with python but going into more details. Showing them how they can start working on a project, how to do their lab assignments using existing tools in Fedora.
These students can see their seniors who already started contributing to various projects. I hope some of them will follow the path.

Day 2 started in a slow motion, everyone was kind of sleepy in the hotel. Harish started the day with his talk on community. The students started coming in during his talk, I guess 9am was a bit too early for most of them.

Interested students moved in the talks they wanted to attend. Siddesh had all his talks almost filled up by the students, He gave 3 different talks one after another and people really loved how easily he went into details of gdb. Ankur gave 4 talks in the day :)

I attended Jared’s talk on docbook and publican , he used my book as an example in the talk. in 2008 he only convinced me to use publican for the book and did lot of ground work and fixing for me.

The FUDPub in the evening was a crazy party , people kept dancing all over until the music was stopped. Photos and videos will be up later next week.

Right now Siddesh is working autotoolizing the glib based qpid library I am writing, /me and Jared are working on the pym.

UPDATE: flickr set can be found here.

Next is a small example to blink a LED connected to P1.7


#include <8051.h>
void main(void)
{
int i=1;
P1=0; /* P1.7 used as LED output */
while(1)
{
P1_7=!(P1_7); /* toggle P1.7*/

for(i=1;i<25000;i++);
/* for delay */

}
}

Compile it and get the hex file from intel hex

$sdcc-sdcc blink.c
$ sdcc-packihx blink.ihx > blink.hex


Now you can upload the hex to the programmer :D /me is also just starting up.

I tested the following libraries to create image thumbnails, GdkPixbuf, imlib2, ImageMagic, epeg. Pixbuf gives somewhat nice timings , imlib2 is fast but was leaking too much memory. ImageMagic seems to the slowest among them. Last try was with epeg which can only handle jpegs and it came out as the fastest. So wrote a C function and using it from inside vala code using extern.

Next target was to find better way to get thumbnails from RAW images, tried libopenraw and LibRaw for that. But with help from yorba developers found the way to do it using gexiv2 only.

In between tried few tools for profiling the application, sayamindu told me about sysprof which seems to be the easiest for my purpose. Using it I found gexiv2_metadata_open_path is taking around 67% of time, inside it Exiv2::TiffImage:readMetaData is taking 51% of time.

Now coming to the point of speed , 1st run is on 1GB of RAW files

real	0m2.946s
user	0m2.542s
sys	0m0.116s

2nd run is on same 36GB of images , among them around half is RAW.

real	4m0.807s
user	0m54.283s
sys	1m24.789s

Now this is fast in my textbook :D I should not forget to tell about the great help I got from #vala and Adrien Bustany in the whole work.

1st run 

real 30m39.178s
user 0m45.561s
sys 3m42.557s

2nd run with out thumbnail generation but with EXIF information

real 10m14.281s
user 0m58.208s
sys 0m45.969s

3rd run with out thumbnail generation and with out EXIF information

real 14m40.503s
user 0m1.585s
sys 0m7.535s

Here I am confused, managed to find out that transaction in sqlite can cause delay, so changed the code to do everything in single transaction
4th run with out thumbnail generation and with out EXIF information

real 0m1.032s
user 0m0.216s
sys 0m0.134s

5th run with out thumbnail generation but with EXIF information

real 3m1.191s
user 1m2.525s
sys 0m34.524s

6th run with everything 

real 16m47.241s
user 0m43.652s
sys 3m21.640s

So the major bottleneck is thumbnail generation, which I am currently doing Gdk.Pixbuf , for EXIF information I am using beautiful gexiv2 from awesome yorba guys.