Using MATLAB Functions on Codistributed Arrays

Many functions in MATLAB software are enhanced or overloaded so that they operate on codistributed arrays in much the same way that they operate on arrays contained in a single workspace.

A few of these functions might exhibit certain limitations when operating on a codistributed array. To see if any function has different behavior when used with a codistributed array, type

help codistributed/functionname

For example,

help codistributed/normest

The following table lists the enhanced MATLAB functions that operate on codistributed arrays.

Type of Function	Function Names
Data functions	cumprod, cumsum, fft, max, min, prod, sum
Data type functions	arrayfun, cast, cell2mat, cell2struct, celldisp, cellfun, char, double, fieldnames, int16, int32, int64, int8, logical, num2cell, rmfield, single, struct2cell, swapbytes, typecast, uint16, uint32, uint64, uint8
Elementary and trigonometric functions	abs, acos, acosd, acosh, acot, acotd, acoth, acsc, acscd, acsch, angle, asec, asecd, asech, asin, asind, asinh, atan, atan2, atand, atanh, ceil, complex, conj, cos, cosd, cosh, cot, cotd, coth, csc, cscd, csch, exp, expm1, fix, floor, hypot, imag, isreal, log, log10, log1p, log2, mod, nextpow2, nthroot, pow2, real, reallog, realpow, realsqrt, rem, round, sec, secd, sech, sign, sin, sind, sinh, sqrt, tan, tand, tanh
Elementary matrices	cat, diag, eps, find, isempty, isequal, isequalwithequalnans, isfinite, isinf, isnan, length, meshgrid, ndgrid, ndims, numel, reshape, size, sort, tril, triu
Matrix functions	chol, eig, inv, lu, norm, normest, qr, svd
Array operations	all, and (&), any, bitand, bitor, bitxor, ctranspose ('), end, eq (==), ge (>=), gt (>), horzcat ([]), ldivide (.\), le (<=), lt (<), minus (-), mldivide (\), mrdivide (/), mtimes (*), ne (~=), not (~), or (|), plus (+), power (.^), rdivide (./), subsasgn, subsindex, subsref, times (.*), transpose (.'), uminus (-), uplus (+), vertcat ([;]), xor
Sparse matrix functions	full, issparse, nnz, nonzeros, nzmax, sparse, spfun, spones
Special functions	dot

Using a for-Loop Over a Distributed Range (for-drange)

Programming Overview

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