Skip to main content

plaNETlab

Working in multiple labs sometimes worth new infos on different knowledge areas. As I am at LAD every Wednesday and Friday at afternoon, people there always came with news on high performance computing. Today, one former student visiting the lab told me about the PlaNETLab project, wich is s a global research network that supports the development of new network services. There are hosts spread trough many countries as shown on their map.

Comments

Popular posts from this blog

uSleep on windows (win32)

I am facing a terrible issue regarding timing on windows. Googling arround, I've found those infos: Using QueryPerformanceCounter and QueryPerformanceFrequency APIs in Dev-C++ ( http://yeohhs.blogspot.com/2005/08/using -queryperformancecounter-and_13.html ) QueryPerformanceCounter() vs. GetTickCount() http://www.delphifaq.com/faq/delphi_windows_API/f345.shtml How to time a block of code http://www.cryer.co.uk/brian/delphi/howto_time_code.htm And Results of some quick research on timing in Win32 http://www.geisswerks.com/ryan/FAQS/timing.html With that I'm trying to write something like a uSleep function for windows: # include<windows.h> void uSleep ( int waitTime){ __int64 time1 = 0, time2 = 0, sysFreq = 0; QueryPerformanceCounter((LARGE_INTEGER *)&time1); QueryPerformanceFrequency((LARGE_INTEGER *)&freq); do { QueryPerformanceCounter((LARGE_INTEGER *)&time2); // }while((((time2-time1)*1.0)/sysFreq)<waitTime); } while ( (time2-time1) <waitTime); } T

More trickery with gnuplot dumb terminal

In my post " Plotting memory usage on console " the chart doesn't pan the data. Now, using a named pipe, the effect got a little bit nicer. First, we have to run the memUsage.sh script to get a file filled with memory usage info: ./memUsage.sh > memUsage.dat & Then we have to create a named pipe: mkfifo pipe Now we have to run another process to tail only the last 64 lines from the memUsage.dat while [ 1 ]; do tail -64 memUsage.dat> pipe; done & And now we just have to plot the data from the pipe: watch -n 1 'gnuplot -e "set terminal dumb;p \"pipe\" with lines"' And that is it!

powerpoint slides to jpeg

Looking for some way to convert power point slides to JPG, I've found this site: http://www.commandlinefu.com/commands/browse It has tons of good linux command line tips. And here is the tip about the pdf to jpg which brought me there: http://www.commandlinefu.com/commands/view/719/convert-pdf-to-jpg And to convert the powerpoint to pdf before, one can issue the unoconv command: unoconv -f pdf slides.ppt