Input

• C - Array handle for an S3L parallel array of rank >= 2. C is the destination array for all matrix multiplication operations (as discussed in the Output section). Some of these operations also use C as an input argument, adding the contents of C to their respective matrix multiplication products. The operations shown in Table 8-5 that include some variation of C + AB belong to this class.

• A - Array handle for an S3L parallel array of the same rank as C and B. This array contains one or more instances of the left-hand factor array A, defined by axes row_axis (which counts the rows) and col_axis (which counts the columns). Axis col_axis of A must have the same length as axis row_axis of B. The contents of A are not changed during execution.

• B - Array handle for an S3L parallel array of the same rank as C and A. This array contains one or more instances of the right-hand factor array B, defined by axes row_axis (which counts the rows) and col_axis (which counts the columns). The contents of B are not changed during execution.

• D - Parallel array of the same shape as C. This argument is used only in the calls whose names end in _addto. It contains one or more instances of the array D that is to be added to the array product, defined by axes row_axis (which counts the rows) and col_axis (which counts the columns). The contents of D are not changed during execution, unless D and C are the same variable.

• row_axis - The axis of C, A, and B that counts the rows of the embedded array or arrays. Must be nonnegative and less than the rank of C.

• col_axis - The axis of C, A, and B that counts the columns of the embedded array or arrays. Must be nonnegative and less than the rank of C.

Note: The argument can be identical with the argument C in all matrix multiply _addto routines except _t1_t2_addto.