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- From: bt@irfu.se (Bo Thide')
- Subject: Re: Lisp performance (on Sparc SS2, SS10-30, HP720)
- Message-ID: <1992Nov16.125234.313@irfu.se>
- Date: Mon, 16 Nov 1992 12:52:34 GMT
- References: <1e824rINNlpu@iraul1.ira.uka.de>
- Organization: Swedish Institute of Space Physics, Uppsala, Sweden
- Lines: 60
-
- 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- The HP9000/720 has been replaced by the much faster 735.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-
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