I built the sqort example for the Intel Cilk++ SDK and it runs fine, but when I run
cilkview qsort gnuplot qsort.plt I get an error; it looks like the qsort.csv file is incomplete. gnuplot reports: gnuplot> plot [0:16] [0:16] x title "parallelism" lt 2, 2.012881 notitle lt 2, "qsort.csv" using 1:2 title "burdened speedup" with lines lt 1, "qsort.csv" using 1:4 with points pt 1 title "trials"
Hi David,
Did gnuplot generate a graph in spite of this, or did it die from the error? If it generated the graph, it is a warning that there was no data in the trials column (i.e., you didn't run any trials for qsort). The .csv file is only incomplete insofar as cilkview could have generated more data: e.g., "% cilkview -trials all ./qsort". I'm sorry for the ugly gnuplot output, though.
If it is dying from the error, could you post your .csv output file, please?
Thanks, David.
Thanks, David.
Thanks, William.
gnuplot was dying and not generating a plot. It turns out that this was because I had omitted the -trials all option. When I add that, then I no longer get the errors that I reported. Inspecting the Cilk++ Programmers Guide, I see the default is -trials none: "Do not run any benchmark trials. This is the default." However, this still generates the .csv and .plt file, which threw me off. Perhaps it should not generate the .csv file unless one uses -trials one [k], -trials log [k], or -trials all [k]. When I run cilkview qsort I get this invalid qsort.csv file # cilkview format version, 1 I haven't downloaded gnuplot 4.0 to test it, but I'm running gnuplot 4.2 patchlevel 4 on my computer and your data plots fine (albeit with a warning that gnuplot is skipping the trial data column). If you don't want to run the trials every time, see if that version of gnuplot works. I'll see if I can get the requirements on cilkview updated.
I have a problem with cilkview on linux. it generates an empty <program_name>.cv.out file (0 size) and not csv or plt files.
I would appreciate any help.
Guy