[R] R and 2 processors

A.J. Rossini rossini at blindglobe.net
Tue Jan 22 05:20:42 CET 2002


>>>>> "AL" == Agustin Lobo <alobo at ija.csic.es> writes:

    AL> As far as I can see by searching the archieves, R could not
    AL> take advantage of two processors in the same machine but there
    AL> were plans for implementing multithreading in R. Is this work
    AL> going on?

    AL> On the other hand, if two processors are present in the same
    AL> linux machine is it possible to focus one processor on tasks
    AL> of the operative system and the other on R and/or other real
    AL> computing? Could anyone point me to info on this subject?

There is always the truly coarse user-level approach: RPVM (instead of
threads, you are looking at processes, with flexible inter-process
communication).

The API is reasonably straightforward, and the additional plus is that
we (well, Michael) should soon have the SPRNG library usable by R, for
a reasonably verified parallel pseudo-RNG.

best,
-tony

-- 
A.J. Rossini				Rsrch. Asst. Prof. of Biostatistics
U. of Washington Biostatistics		rossini at u.washington.edu	
FHCRC/SCHARP/HIV Vaccine Trials Net	rossini at scharp.org
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