Dear R Gang: I have a Macintosh G4 powerbook, running OS 9.2. Last week I ran a statistical analysis program that I wrote in R for two days continuously. The program does repeated intensive computations on a large data set. The program completed its task successfully, but during the process I noted that the computer seemed to be running unusually hot. Shortly after the program stopped, something unrepairable happened to the computer. I don't know the cause of the problem yet, and won't find out until Monday or Tuesday, but it seems to involve the hard drive - Norton Disk Doctor cannot fix it, nor can I restore the original software to the hard drive. The computer breakdown may of course be unrelated to my use of R, but I am concerned that running the computer so intensively may have caused the problem. Has anyboody run into a similar problem using R on a G4 machine? I have also been running R on a G3 I-Book, using the same operating system, though not the same program, and I have had no problems. Thanks! Chris Wills -- Christopher Wills Professor of Biology Division of Biological Sciences University of California, San Diego La Jolla CA 92093 Phone 858-534-4113 Fax 858-534-7108 e-mail cwills at ucsd.edu -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
"Dr. Chris Wills" wrote:> > Dear R Gang:Dear guy,> I have a Macintosh G4 powerbook, running OS 9.2. Last week I > ran a statistical analysis program that I wrote in R for two days > continuously. The program does repeated intensive computations on a > large data set. > The program completed its task successfully, but during the > process I noted that the computer seemed to be running unusually hot. > Shortly after the program stopped, something unrepairable happened to > the computer. I don't know the cause of the problem yet, and won't > find out until Monday or Tuesday, but it seems to involve the hard > drive - Norton Disk Doctor cannot fix it, nor can I restore the > original software to the hard drive. > The computer breakdown may of course be unrelated to my use > of R, but I am concerned that running the computer so intensively may > have caused the problem. Has anyboody run into a similar problem > using R on a G4 machine? I have also been running R on a G3 I-Book, > using the same operating system, though not the same program, and I > have had no problems.You ran calculations and so you used your CPU extraordinary, so it's reasonable that it gets warmer than in other circumstances. If the cooling system doesn't work sufficiently, that might cause damages. In that case your hardware was not designed properly (e.g. to cool the 100% used CPU). Uwe Ligges -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Sun, 13 Oct 2002, Dr. Chris Wills wrote:> of R, but I am concerned that running the computer so intensively may > have caused the problem. Has anyboody run into a similar problem > using R on a G4 machine? I have also been running R on a G3 I-Book, > using the same operating system, though not the same program, and I > have had no problems.I have noticed that my iBook gets rather hot when used extensively, but I don't think it should be enough to cause hardware breakdowns -- it would seem more likely that the CPU itself would be affected by high temperatures. -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
You could go to the Apple sci-tech mailing list and ask this question of people who often do intensive computations on Apple hardware. They might be able to give a realistic sense of how plausible this concern is. -Don At 7:18 AM -0700 10/13/02, Dr. Chris Wills wrote:>Dear R Gang: > I have a Macintosh G4 powerbook, running OS 9.2. Last week I >ran a statistical analysis program that I wrote in R for two days >continuously. The program does repeated intensive computations on a >large data set. > The program completed its task successfully, but during the >process I noted that the computer seemed to be running unusually >hot. Shortly after the program stopped, something unrepairable >happened to the computer. I don't know the cause of the problem >yet, and won't find out until Monday or Tuesday, but it seems to >involve the hard drive - Norton Disk Doctor cannot fix it, nor can I >restore the original software to the hard drive. > The computer breakdown may of course be unrelated to my use >of R, but I am concerned that running the computer so intensively >may have caused the problem. Has anyboody run into a similar >problem using R on a G4 machine? I have also been running R on a G3 >I-Book, using the same operating system, though not the same >program, and I have had no problems. > Thanks! > Chris Wills >-- >Christopher Wills >Professor of Biology >Division of Biological Sciences >University of California, San Diego >La Jolla CA 92093 > >Phone 858-534-4113 >Fax 858-534-7108 >e-mail cwills at ucsd.edu >-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- >r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html >Send "info", "help", or "[un]subscribe" >(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch >_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._-- -------------------------------------- Don MacQueen Environmental Protection Department Lawrence Livermore National Laboratory Livermore, CA, USA -------------------------------------- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._