init.sprng.master {rpvm} | R Documentation |
init.sprng.master
and init.sprng.slave
are used together
to initialize the parallel random number generator (PRNG) states in
the RPVM master and slaves processes, respectively.
init.sprng.group
is used to initialize PRNG states for a RPVM
group.
RNGkind ("user")
is called at the end of these functions so
that the default RNG is substituted with the parallel one.
.SPRNG.INIT.TAG
is just a prefined message tag number.
init.sprng.master (children, seed = 0, kindprng = "default", para = 0) init.sprng.slave () init.sprng.group (group, rootinst = 0, seed = 0, kindprng = "default", para = 0) .SPRNG.INIT.TAG <- 199
children |
vector of integer task ids of the slave processes |
seed |
an integer of random number seed. It is not the starting state of the sequence; rather, it is an encoding of the starting state. The same seed for all the streams. Distinct streams are returned. Only the 31 least significant bits of seed are used in determining the initial starting state of the stream |
kindprng |
a character string of the disired kind of parallel random number generator |
para |
additional parameters for the parallel random number
generators. If para is 0, default parameters for each PRNG
are used. When invalid parameter is given, a warning is issued and
the default paramter is used. |
group |
a character string, the name of the group |
rootinst |
an integer, the root instance number of the group.
The root instance is responsible for getting the seed ,
rngkind and para parameters from the user |
Return the a two-element character vector of the RNG and normal kinds in use before the call.
Na (Michael) Li nali@umn.edu and A.J. Rossini rossini@u.washington.edu
SPRNG: Scalable Parallel Random Number Generator Library Web Page. http://sprng.cs.fsu.edu/
# in master script ## Not run: oldrng <- init.sprng.master (children, seed = 2321) # in slave script ## Not run: oldrng <- init.sprng.slave () # in group processes ## Not run: oldrng <- init.sprng.group ("mygroup", root = 0, seed = 1231)