Difference in speed was kind of expected--maybe not to that degree. Does it show that modern hardware does not provide enough to scale for this kind of calculation? Can anyone supply a comparison from other languages or libs: python, Haskel, Maple etc?
Interesting was almost the same space. I thought it'd blow out the memory. On Sep 27, 2008, at 14:48, Roger Hui <[EMAIL PROTECTED]> wrote: 52+52 is one hardware instruction and 52x+52x is implemented by software, hence the 2 orders of magnitude difference in time. ----- Original Message ----- From: Oleg Kobchenko <[EMAIL PROTECTED]> Date: Saturday, September 27, 2008 10:04 Subject: Re: [Jgeneral] Limit error To: General forum <[email protected]> Interesting to compare +/100000000#52 NB. about 1 sec 5.2e9 +/100000000#52x NB. about 1 min 5200000000 about the same memory. Let's verify precisely: 10 ts '+/100000000#52' 0.834533 5.36872e8 2 ts '+/100000000#52x' 54.2623 5.36873e8 From: Joey K Tuttle <[EMAIL PROTECTED]> I thought displaying it would be boring - but maybe not any more boring than $ or +/ ... At 08:40 -0700 2008/09/27, Roger Hui wrote: The difference is that Joey's expression did not try to generate the display of 1e8#52 but Paul's expression did, and it's in the generation of that display that the limit error was signaled. ----- Original Message ----- From: Joey K Tuttle Date: Saturday, September 27, 2008 8:22 Subject: Re: [Jgeneral] Limit error To: General forum Works OK on my Mac... $100000000 # 52 100000000 version '' Installer: j602a_mac_powerpc.dmg Engine: j602/2008-03-03/16:45 Library: 6.02.023ProductName: Mac OS X ProductVersion: 10.5.5 At 15:52 +0100 2008/09/27, Paul Moore wrote: >In J32 on Windows, 100000000 # 52 gives a limit error. What does this >mean? I can't see anything stating that there is a limit in array size >(other than available memory) in the documentation. > >Is it possible for me to create a hundred-million entry array? (Such >an array of integers would be 400M in size, I have 2G so memory should>not be an issue). ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
