To avoid disappointment or misleading your users, you should count on a small but definite slow-down in a 32-bit app when it is run on a 64-bit system.
The whole point of 64 bits is the bigger address space, and the troubles and complications you avoid by not having to shoehorn some app that's bigger than 32 bits into 32 bits. ----- Original Message ----- From: Alex Rufon <[email protected]> Date: Wednesday, September 30, 2009 0:14 Subject: Re: [Jgeneral] Advantages of using J in 64 bit OS To: General forum <[email protected]> > I was trying to read up about 64bit OS and one of the thing they > are pointing out is that it should be faster for some > computations since all the bits would fit in one 64bit word. > > My J application server in production are still using 32bit > CPU's (i.e. Intel Pentium 4 3Ghz single core) and the OS(Win2K, > MSSQL, IIS, etc) are all 32 bits. I've been looking at some > submission by other teams and all of their requirements are > still in 32bit. > > -----Original Message----- > From: [email protected] [mailto:general- > [email protected]] On Behalf Of bill lam > Sent: Wednesday, September 30, 2009 2:30 PM > To: [email protected] > Subject: Re: [Jgeneral] Advantages of using J in 64 bit OS > > On Wed, 30 Sep 2009, Alex Rufon wrote: > > Where doing the CAPEX for 2010 and I was hoping to get a 64bit > machine for my J Application Server. > > > > Right now, I've only came up with the following justification: > > > > 1. Allows J to allocate > objects greater than 1GB. > > > > 2. Allows J to process > files greater than 2GB. > > Assuming you work with mssqlsvr, There are already 64-bit > version of > window server 2008 and mssqlsvr 2008. For 32-bit os, the > sqlsvr alone > would eat up almost all available 4GB memory. J odbc > script can run > in 64-bit mode. Not sure for dotnet (I didnt use). > > BTW how can you possibly get a 32bit x86 cpu nowadays (except > atom in > netbook or some via chip). ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
