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how to remove workers in doSMP
2 messages · Roman Luštrik, Dirk Eddelbuettel
On 19 August 2010 at 09:52, Roman Lu?trik wrote:
| Looks like I was sloppy and didn't clean up after myself in previous | session(s). I'm trying to activate my cores via doSMP package like so: | | > wrk <- startWorkers(4, FORCE = TRUE) # if I don't use FORCE, it won't | create the object | Warning messages: | 1: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP1 | 2: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP2 | 3: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP3 | 4: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP4 | 5: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP5 | 6: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP6 | 7: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP7 | 8: In startWorkers(4, FORCE = TRUE) : | there is an existing doSMP session using doSMP8 | 9: In startWorkers(4, FORCE = TRUE) : unable to recreate task queue doSMP1 | > registerDoSMP(wrk) | | After I registerDoSMP, I get two popup windows that my Rterm has stopped | responding. If I try to run something in parallel, only one/two cores will | work. Because I failed to stop workers in my previous sessions (and have | rebooted the system inbetween), I don't have objects with which I could | stopWorkers(obj). I tried stopWorkers(wrk) (after using FORCE in | startWorkers), but R session seems to hang (console unresponsive and not | much is going with CPU usage. How can I "reboot" cores so that I'll be able | to register workers? This is commercially supported software not even released to CRAN so I recommend you contact the vendor. Dirk
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com