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4 results for “from:Brian D Peyser PhD”

foreach + doMC not fully parallel?
Brian D Peyser PhD · Aug 30, 2010 · r-sig-hpc

On Sun, 2010-08-29 at 11:56 +0800, Xie Chao wrote: > I suggest you try: > > 1) run your R code from R directly > 2) test similar code without IO from hard disk > 3) If combining 1) and 2) still...

foreach + doMC not fully parallel?
Brian D Peyser PhD · Aug 26, 2010 · r-sig-hpc

Hi everyone, I am trying to run code in parallel across 4 cores with foreach and doMC. The code runs fine, and it will spawn 4 R processes, but these processes aren't all on separate cores. Often, I will...

foreach + doMC not fully parallel?
Brian D Peyser PhD · Aug 31, 2010 · r-sig-hpc

On Tue, 2010-08-31 at 13:16 +0200, Scionforbai wrote: > > I did a reboot and %dopar% started working fully again. I then did > > suspend/resume and the problem came back. > > > Linux 2.6.32-24-generic #38 SMP Mon...

foreach + doMC not fully parallel?
Brian D Peyser PhD · Aug 27, 2010 · r-sig-hpc

On Thu, 2010-08-26 at 18:35 -0400, Sean Davis wrote: > Assuming there is nothing else running on the system? > > > In any case, it appears that you are reading text files and writing to > disk. Only one core can...

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