| require(mxnet) |
| # TODO(KK, tong) think about setter getter interface(which breaks immutability, or current set and move interface. |
| # We need to make a choice between |
| # exec_old = exec |
| # exec$arg.arrays = some.array, this changes exec_old$arg.arrays as well, user won't aware |
| # V.S. |
| # exec_old = exec |
| # exec = mx.exec.set.arg.arrays(exec, some.array) |
| # exec_old is moved, user get an error when use exec_old |
| |
| A <- mx.symbol.Variable('A') |
| B <- mx.symbol.Variable('B') |
| C <- A + B |
| a <- mx.nd.zeros(c(2), mx.cpu()) |
| b <- mx.nd.array(as.array(c(1, 2)), mx.cpu()) |
| |
| exec <- mxnet:::mx.symbol.bind( |
| symbol = C, |
| ctx = mx.cpu(), |
| arg.arrays = list(A = a, B = b), |
| aux.arrays = list(), |
| grad.reqs = list("null", "null")) |
| |
| # calculate outputs |
| mx.exec.forward(exec) |
| out <- as.array(exec$outputs[[1]]) |
| print(out) |
| |
| mx.exec.update.arg.arrays(exec, list(A = b, B = b)) |
| mx.exec.forward(exec) |
| |
| out <- as.array(exec$outputs[[1]]) |
| print(out) |
