1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
function c = chunk (c)
%GRB.CHUNK get/set the chunk size to use in GraphBLAS.
%
% c = GrB.chunk ; % get the current chunk c
% GrB.chunk (c) ; % set the chunk c
%
% GrB.chunk gets and/or sets the chunk size to use in GraphBLAS, which
% controls how many threads GraphBLAS uses for small problems. The
% default is 4096. If w is a measure of the work required (for C=A+B, the
% work is w = GrB.entries(A) + GrB.entries(B), for example) then the number
% of threads GraphBLAS uses is min (max (1, floor (w/c)), GrB.nthreads).
%
% Changing the chunk via GrB.chunk(c) causes all subsequent GraphBLAS
% operations to use that chunk size c. The setting persists for the
% current session, or until 'clear all' or GrB.clear is used, at
% which point the setting reverts to the default.
%
% See also GrB.threads.
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
if (nargin == 0)
c = gbchunk ;
else
c = gbchunk (c) ;
end
|
