Hi all,I am working in a multi core machine and I am trying to make some parallel code to speed up the process. I have seen already the foreach packet but it looks like that it always combine the results on a list. My case though is simpler since I am plotting and saving in external files, inside the loop, and thus I do not need to keep anything from the loop.My code looks like ??? expandMeanSigmaOn<-expand.grid(1:100,100:200,5:10,5000:6000) ?? for (i in 1:length(expandMeanSigmaOn$Var1)){ ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? mean1<-expandMeanSigmaOn$Var1[i] ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? mean2<-expandMeanSigmaOn$Var2[i] ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? sd1<-expandMeanSigmaOn$Var3[i] ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? sd2<-expandMeanSigmaOn$Var4[i] ??? ??? ??? ??? ??? ??? ??? ??? ?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? fitcass1<-mix(mydata,mixparam(c(mean1,mean2),(c(sd1,sd2)),"gamma"))) ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? pdf(file=paste(filename,"ON.pdf",sep=""));plot(fitcass1);dev.off() # plotting and saving ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? save(OnFitList,file=paste(filename,"ON.Rdata",sep="")) # plotting and saving ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? } ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? } ?} as you can see from the code above, given some input values I am trying some fits, which then I am saving the results. Do you think that the foreach packaget would be suitable (since the returning list can grow very large and eat up memory) or should I try some alternative package? I would like to thank you in advance for your replyRegardsAlex [[alternative HTML version deleted]]