Author: James T. Walker
Date: 18:50:56 03/13/02
Go up one level in this thread
On March 13, 2002 at 14:12:29, Robert Hyatt wrote: >On March 13, 2002 at 00:29:21, martin fierz wrote: > >>aloha! >> >>here's something i found on a german computer magazine website: >>(http://www.heise.de/ct/english/02/05/182/) >> >> >>"Under Windows we made use of Visual Studio 6 (with Service Pack 5), with which >>in all probability most Windows applications have been created. The SPEC results >>obtained with the new compilers such as the current GCC 3.0 or Intel's in-house >>compiler are better by between ten and more than twenty percent. >>[snip] >>With a SPECint_base value of 306 Apple's 1 GHz machine under Mac OS X ran almost >>head to head with the equally clocked Pentium III, combined with Linux and GCC, >>with a SPECint_base value of 309. Under Windows, the bad quality of Microsoft's >>run-of-the-mill compiler, which pushed the system down to a SPECint_base value >>of 236, below the 242 value of the PowerMac running at a clock cycle of 800 MHz, >>came back to haunt the Intel processor." >> >>and then there is the link http://www.heise.de/ct/english/02/05/182/qpic01.jpg >>which shows the specint crafty result which is a whopping 444 for GCC and >>only 293 for MSVC. >> >>is this really possible?? i remember i once tried GCC for my checkers program, >>and of course it's long ago, but it was clearly worse than MSVC at the time. i >>just can't remember anybody posting anything like this here, GCC being 50% >>faster than MSVC... but usually, this magazine is good... >> >>cheers >> martin >> >>PS: just another question: is linux 32-bit or 64-bit? can i use more than 2-4GB >>ram under linux? > > >1. I've never seen GCC within 10% of the speed of MSVC. I doubt it has >suddenly happened. > >2. Linux is _both_. On intel (non-IA64 machines) it is a 32 bit operating >system. On 64 bit processors like that Alpha or IA64 it is a 64 bit operating >system. The RAM limit is not an OS issue, it is an architectural issue. Except >for a bizarre hack Intel added a couple of years back, the 32 bit machines are >limited to 4 gigs (2^32). With a kludge they added, this goes to 32 gigs I >believe, but only for (at the time) the Xeons... Hello Bob, Can you confirm that the P3/P4 and AMD Athlons have only 32 address lines? My understanding of microprocessors is that the memory limit is due to the number of address lines and not the number of data bit lines. Meaning that a 32 bit processor can pass 32 bits in parallel but the amount of memory that it can address is 2^X where "X" is dependent on the number of address lines the cpu has. I remember the Motorola 68000 had something like 21/23 address lines even though it was a 16 bit processor(Don't tie me to that exactly). I have tried to look up the Pentium and have been unable to get a pin-out of it. Jim
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.