Operations for floating point numbers are handled by programming.
"Preliminary Specifications: Programmed Data Processor Model Three (PDP-3)" by Digital Equipment Corporation
The first supercomputer to reach one petaFLOPS (one quadrillion floating point operations per second).
The Condor Cluster can achieve about 1.5 GigaFLOPS — floating point operations per second, the unit by which supercomputing power is measured — per watt of computing power.
One floating point operation at top speed (i.e. the speed of matrix multiplication) costs one time unit. (2).
Virtual Transmission Method, A New Distributed Algorithm to Solve Sparse Linear System
Measuring the absolute performance of the metacomputer is diﬃcult because the result strongly depends on the fraction of Floating-point Division operations (FDIVs) used in the benchmark code.
Table 2.1 lists four different measures of the absolute speed in Millions of FLoating-point Operations Per Second (MFLOPS).