Jai, On Oct 19, 2013, at 1:37 AM, JaiReddy wrote:
> Thanks Simon. > > May I know how R works if two expressions come at the same time for > evaluation. When I debug my case I found that issue was found with indexed > values of protected items. > > As R is single threaded engine, I just want to know how does R behave when > 2nd expression comes for parsing and evaluation even before 1st expression > evaluation does complete? > As I said, no API calls may be performed in parallel, that includes parsing and evaluation. Typically, R is run in a sequential loop: read, parse, eval, print so anything that is not processed is blocked until the loop is back to reading. However, given that R can be called from arbitrary front-ends, it's really up to the front-end to decide what to do - as long as it serializes the calls appropriately. Cheers, Simon > > Thanks > Jai > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Parallel-R-expression-evaluations-tp4678352p4678587.html > Sent from the R devel mailing list archive at Nabble.com. > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
