The PLAPACK equivalent local and global level-3 BLAS calls are given by place HR here
place HR here Parameters UPLO and TRANS have been replaced by integer parameters uplo and trans, which can take on the values indicated in Table . All other parameters are now passed as part of linear algebra objects alpha, a, beta, and c.
When a node calls PLA_Local_syrk, the operation is equivalent to extracting the local information (datatype, dimensions, and pointer to the buffer) and locally performing the symmetric rank-k update. Notice that the local portion of c must be square, symmetric, and stored in the indicated portion of the buffer. The local dimensions of alpha and beta must be , but they can be of any object type. The local dimensions of a and c must be such that the operation is well-defined. All objects must have the same datatype. Notice: no communication is performed as part of this call. Thus, all information must be locally available.
All nodes must simultaneously call PLA_Syrk, which performs the BLAS call on the distributed objects. Parameters uplo and trans still have the same meaning. Parameters alpha and beta must now be multiscalars. Parameters a and c must both be of object type matrix. The global dimensions of the different objects must be such that the operation is well-defined.