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D.2.7.1 parallelWaitN
Procedure from library parallel.lib (see parallel_lib).
- Usage:
- parallelWaitN(commands, arguments, N[, timeout]); commands list,
arguments list, N int, timeout int
- Return:
- a list, containing the results of commands[i] applied to
arguments[i], i = 1, ..., size(arguments).
The procedure waits for N jobs to finish.
An optional timeout in ms can be provided. Default is 0 which
disables the timeout.
- Note:
- The entries of the list commands must be strings. The entries of the
list arguments must be lists.
The type of any entry of the returned list whose corresponding task
did not finish (due to timeout or error) is "none".
The returned list may contain more than N results if several jobs
finished "at the same time". It may contain less than N results in
the case of timeout or errors occurring.
Example:
| LIB "parallel.lib";
ring R = 0, (x,y,z), lp;
ideal I = 3x3y+x3+xy3+y2z2, 2x3z-xy-xz3-y4-z2, 2x2yz-2xy2+xz2-y4;
ideal J = x10+x9y2, x2y7-y8;
list commands = list("std", "std");
list arguments = list(list(I), list(J));
parallelWaitN(commands, arguments, 1);
==> [2]:
==> _[1]=y15-y12
==> _[2]=xy12+y14
==> _[3]=x2y7-y8
==> _[4]=x10+x9y2
| See also:
parallelWaitAll;
parallelWaitFirst;
tasks_lib.
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