PLAPACK provides two more layers of level-1 BLAS: the local level-1 BLAS and the global level-1 BLAS, with identical parameter sequences. For the copy, the calling sequences are given by place HR here

place HR here
The data type of the operands and parameters like vector length and stride are now passed as part of linear algebra
objects `x` and `y`.

When a node calls `PLA_Local_copy`, the operation
is equivalent to
extracting the local information (data type, length, stride, and pointer to the
buffers) and locally performing the copy.
*The object type can be any valid PLAPACK object type.*
Moreover, the local copy can also copy two dimensional objects
(multiscalars, (projected) (duplicated) multivectors and matrices).
The local dimensions of `x`, and `y` must be such
that the operation is well-defined
(i.e., local dimensions match). All objects must have the same data type.
To best understand the operation
of this call, see the sample implementation given in Figure
.

PLACE BEGIN HR HERE

PLACE END HR HERE

Notice: no communication is performed as part of this call. Thus, all information must be locally available.

The globalPLA_Copycall is our primary means for communication. It is discussed in great detail in Chapter .