Matrix multiplication on PC-s

Preliminary test 96/10/23

(see also: bench_bm_mm_ws.txt)

All this is unchecked (what is f77, does it call g77; where are the libraries, etc.) (f77 seems to use a conversion to C.)

CPU times can be compared to the workstation benchmarks WITHOUT precompiled BLAS libraries.

Table generated by using a dummy tempd_linux.f and using the command "time ".

TABLE 1. Program: p25 (simple do-loops, vector loop inside).

Machine	Compiler	Opt. level	ND	N	CPU (sec)	MFLOPS
Pentium 100 MHz	f77	1	400	400	28	4.6
16 MB (Linux)		2			26	5
		3			59?
	g77	1			25 *	5
		2			25	5
		3			25	5

* The time overhead for generating the matrices is 0.2 sec. (Obtained by running the program with the matrix multiplication loops deleted. All other loops and calls were retained.)