bigGP (version 0.1.8)

remoteCalc: Do Arbitrary Calculations on One or Two Inputs

Description

remoteCalc applies a function to either one or two input objects on the slave processes. Input objects can be obtained environments, lists, and ReferenceClass objects as well as the global environment on the slave processes. The output object can be assigned into a environment or a ReferenceClass objects as well as the global environment on the slave processes.

Usage

remoteCalc(input1Name, input2Name = NULL, FUN, outputName, input1Pos = '.GlobalEnv',
input2Pos = '.GlobalEnv', outputPos = '.GlobalEnv')

Arguments

input1Name

an object name, given as a character string, giving the name of the first input on the slave processes.

input2Name

an object name, given as a character string, giving the name of the first input on the slave processes. This is optional so that one can carry out a calculation on a single input.

FUN

the function to be applied, see ‘details’. In the case of operators like +, the function name must be backquoted.

outputName

an object name, given as a character string, giving the name to be used for the result of the function call.

input1Pos

where to look for the first input, given as a character string (unlike get). This can indicate an environment, a list, or a ReferenceClass object.

input2Pos

where to look for the second input, given as a character string (unlike get). This can indicate an environment, a list, or a ReferenceClass object.

outputPos

where to do the assignment of the output, given as a character string (unlike assign). This can indicate an environment or a ReferenceClass object.

Details

FUN is found by a call to match.fun and typically is either a function or a symbol (e.g., a backquoted name) or a character string specifying a function to be searched for from the environment of the call to remoteCalc.

Examples

if (FALSE) {
bigGP.init(3)
mpi.bcast.cmd(x <- 0:mpi.comm.rank())
remoteCalc('x', FUN = exp, outputName = 'exp.x')
remoteLs()
pull('exp.x')
remoteCalc('x', 'exp.x', FUN = `+`, outputName = 'silly')
pull('silly')
}