Description Usage Arguments Details Value Author(s) References See Also Examples
mpi.gather.Robj
gathers each member's object to the member
specified by the argument root
.
The root member receives the objects as a list.
mpi.allgather.Robj
is the same as mpi.gather.Robj
except that all members receive the result instead of just the root.
1 2 3 | mpi.gather.Robj(obj=NULL, root = 0, comm = 1, ...)
mpi.allgather.Robj(obj=NULL, comm = 1)
|
obj |
data to be gathered. Could be different type. |
root |
rank of the gather |
comm |
a communicator number |
... |
optional arugments to |
Since sapply is used to gather all results, its default option "simplify=TRUE" is to simplify outputs. In some situations, this option is not desirable. Using "simplify=FALSE" as in the place of ... will tell sapply not to simplify and a list of outputs will be returned.
For mpi.gather.Robj
, it returns a list, the gathered message
for the root member. For
mpi.allgatherv.Robj
, it returns a list, the gathered message
for all members.
Hao Yu and Wei Xia
http://www.lam-mpi.org/, http://www-unix.mcs.anl.gov/mpi/www/www3/
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ## Not run:
#Assume that there are some slaves running
mpi.bcast.cmd(id<-mpi.comm.rank())
mpi.bcast.cmd(x<-rnorm(id))
mpi.bcast.cmd(mpi.gather.Robj(x))
x<-"test mpi.gather.Robj"
mpi.gather.Robj(x)
mpi.bcast.cmd(obj<-rnorm(id+10))
mpi.bcast.cmd(nn<-mpi.allgather.Robj(obj))
obj<-rnorm(5)
mpi.allgather.Robj(obj)
mpi.remote.exec(nn)
## End(Not run)
|
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