Woopee!!
Africa still has one in the Top 500, and it sits in South Africa

Continents  	Count  	Share %  	Rmax Sum (GF)  	Rpeak Sum (GF)  	Processor Sum
Africa  	1  	0.20 %  	23415  	        27850  	                8192

Here are it's vital statistics.

Rank  System  	        Procs	Memory(GB)  	Rmax (GFlops)  	Rpeak (GFlops)  Vendor
128 	 Blue Gene/P Solution     8192	N/A  	        23415  	        27850  	         IBM

Dunno where the history came from - UCT-CERN group? The R_peak and R_max are also quite close, which is impressive.

Site  	        Centre for High Performance Computing
System Family 	IBM BlueGene
System Model 	        BlueGene/P
Computer 	        Blue Gene/P Solution
Vendor 	        IBM
Application area 	Not Specified
Installation Year 	2008
Operating System 	CNK/SLES 9
Interconnect 	        Proprietary
Processor 	        PowerPC 450 850 MHz (3.4 GFlops)

Interestingly, we were told it was a 14TFlop machine. I assume that it is the same having 1024 dual cpu dual cores.