[Beowulf] Uses of DGEMM

Mark Hahn hahn at mcmaster.ca
Fri Oct 26 15:38:43 EDT 2007


> Being a programmer and not a scientist I was wondering if anyone could
> tell me where they have seen the DGEMM routine being used except for
> benchmarking puposes.

yes, multiplying two matrices is commonplace even outside benchmarks ;)

or are you asking about the particular form of the function,
C = alpha*A*B + beta*C?  real user codes I've seen don't tend to 
use all the features (transpose, scalars alpha, beta or the
inplace/accumulate aspect of C.)  but I'm guessing that the serious blas
implementations already special-case no-transpose, alpha==1, 
beta==0 and beta==1.
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