(pounds head)
May. 22nd, 2006 04:51 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
jayI just can't find the SPECint95 or SPECfp95 values for a PowerPC 750... from anything other than some Russian website. SPEC itself is no help, even if I know the webmistress well... I know that IBM or Motorola published these in the late 90s.... sigh.
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no subject
Date: 2006-05-23 05:16 am (UTC)The software in question was tested on a flight avionics board for the X-34, which was a rad-hard PowerPC 750 (presumably the RAD750), and used about 2-3% of CPU except during control events, when utilization spiked to 20% for a couple of seconds. We could push it down to 10% if we were willing to broaden the high-demand spike somewhat. So I'm telling the instrument avionics guys that we'll need about 15% equivalent of a rad-hard 750. If I went by MIPS ratings, that'd be about 35 MIPS or roughly a i486-class processor. Which is not what they wanted to hear, they were trying to use a old 16-bit board.