🚀 go-pugleaf

In article <1e824rINNlpu@iraul1.ira.uka.de> wolpers@i11s10.ira.uka.de (Andreas Wolpers) writes:
>Hello everybody,
>
>I'm having a minor problem on which I would welcome any comments:
>Since I'll have some money to spend real soon now, I've been pondering
>whether we should switch from Sun to HP. The usual benchmark results
>suggest that a change might result in faster execution of our pet
>program, a large "theorem prover" written in Lisp.
>
>From the SpecInt92 results, one should expect a performance increase
>of about a factor of 2 when switching from a SS2 to either s SS10-30
>or HP720. Unfortunately, on both machines turned out to but just
>30% faster than a SS2 when running our system (for which ps NEVER
>shows a resident set under 3-4 MB, not even on an 8MB machine).
>
>Any explanations at hand? Did we encounter a bottleneck between
>CPU and memory, or what? What performace should I expect from
>a SS10-41 or SS10-52 (which have a larger cache, but still not 
>large enough to hold the Lisp's resident set. And if I'm not
>mistaken, the large cache results in a longer time spent for
>non-cache memory accesses (6 cycles instead of 3)). What 
>performace should I expect from a HP735?
>
>I can buy enough memory so that disk speed is no criterion.
>Should I wait for machines with 8MB of cache? Should I shoot myself?
>Should I give YOU the money? :-)
>
>Sigh,
>
>Andreas
>-- 
>Andreas Wolpers
>e-mail: wolpers@ira.uka.de
>phone:  49-721-608-3977
>fax:    49-721-697760

The HP9000/720 has been replaced by the much faster 735.  In REDUCE (a
Lisp-based symbolics algebra package) there is a benchmark for timing a
certain set of REDUCE/Lisp operations.  The following timigs have been
obtained:


 SYSTEM NAME      TYPE        PROCESSOR    OS         LISP     TIME
                                                               (sec)

Cray              Y-MP C90    Cray         UNICOS     PSL       0.97
Cray              X-MP        Cray         UNICOS     PSL       1.28
HP 9000            720        HP/RISC      HP-UX      PSL       1.7
SparcStation         2        Sparc        Sun/OS 4   PSL       2.9

It is believed that the 735 will be the first workstation to break the 1
second barrier and even beat the Cray Y-MP C90 in this test.

Bo
-- 
   ^   Bo Thide'--------------------------------------------------------------
  |I|        Swedish Institute of Space Physics, S-755 91 Uppsala, Sweden
  |R|      Phone: (+46) 18-303671.  Fax: (+46) 18-403100.  IP: 130.238.30.23
 /|F|\          INTERNET: bt@irfu.se      UUCP: ...!mcvax!sunic!irfu!bt  
 ~~U~~ ----------------------------------------------------------------sm5dfw-