The problem is not about setting up an online judge. It is about users submitting code which produces errors by compiler and clogging the system. Say an C++ template file takes 3 secs for output and there are 300 users , 1000 secs are wasted. The submissions are much more than that. If we stop at the first error it would only take maybe < 1s. About parallel, gcc a.c b.c d.c can they be output to a1.out b1.out d1.out ? Invoking gcc for each of a,b,c seems slow for me . Do we have anything better ? On Mon, Nov 17, 2008 at 7:01 PM, Tom St Denis <tstdenis@xxxxxxxxxxxxxxxx> wrote: > Niklaus wrote: >> >> Hi, >> >> I've an online judge system where i take the source code submitted >> by an user and compile it to an executable and then run it against a >> predetermined input to produce an output which is checked against a >> predetermined output. This determines the results as Correct, Wrong or >> Compile error. >> >> The languages are C,C++,java. >> >> Please suggest solutions for the below problems >> >> 1) How to tell gcc to stop after the first error. I use both gcc >> 4.2 and gcc 3.4. I tried -Wfatal-error and -Wfatal-error it says >> unrecognized option. >> > > <snip> > > I'm going to suggest for the good of all humanity, that the person who is > judging a comp.sci challenge should probably be able to script up an > automated testing harness such that you can do something like > > for f in *.zip; do ./run_test.sh $f; done > > At the high level (say submissions are zip files or whatever) and then your > shell script unpacks, tries to compile, run, compares, etc. > > Just saying... > > Tom >
