PLAPACK provides two more layers of level-2 BLAS: the local level-2 BLAS and the global level-2 BLAS, with identical parameter sequences. For the general matrix-vector multiply, the calling sequences are given by place HR here
place HR here
Parameter TRANS has been replaced by
integer trans, which can take on
the values indicated in Table 
.
All other parameters are now passed as part of linear algebra
objects alpha, a, x, beta, and y.
PLACE BEGIN HR HERE [tbp]
PLACE BEGIN HR HERE
Valid values for integer parameters uplo, trans, and diag.
PLACE END HR HERE
When a node calls PLA_Local_gemv, the operation
is equivalent to
extracting the local information (datatype, dimensions, and pointer to the
buffer) and locally performing the general matrix-vector multiply.
The local dimensions of alpha and beta must be 
,
but they can be of any object type.
The local dimensions of a, x, and y must be such
that the operation is well-defined. All objects must have the same datatype.
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.
All nodes must simultaneously call PLA_Gemv, which performs
the BLAS call on the distributed objects.
Parameter trans now indicates is the global matrix A is
to be (conjugate) transposed for the operation.
Parameters alpha and beta must
be multiscalars. Parameter a must be of object type
matrix. Parameters x and y
must all be of object type vector or (duplicated) projected
vector.
The global dimensions of the different objects must be such
that the operation is well-defined.